Refactoring

.gitignore

@@ -1,4 +1,4 @@
 .idea
 target
-
+*.iml
 *.idb

reports/reports.txt

@@ -183,28 +183,28 @@ Applied margin: 1.0
 Product sold and purchased, action provided: 
 -----Product: jablko-----
 Get jablko
-Presence of product on Node (in ticks): 2
+Presence of product on Node (in ticks): 6
 -----Product: hruška-----
 Get hruška
-Presence of product on Node (in ticks): 4
+Presence of product on Node (in ticks): 3
 -----Product: banán-----
 Get banán
-Presence of product on Node (in ticks): 2
+Presence of product on Node (in ticks): 1
 -----Product: okurka-----
 Get okurka
-Presence of product on Node (in ticks): 2
+Presence of product on Node (in ticks): 3
 -----Product: paprika-----
 Get paprika
-Presence of product on Node (in ticks): 4
+Presence of product on Node (in ticks): 1
 -----Product: vepřové-----
 Get vepřové
-Presence of product on Node (in ticks): 4
+Presence of product on Node (in ticks): 3
 -----Product: hovězí-----
 Get hovězí
-Presence of product on Node (in ticks): 1
+Presence of product on Node (in ticks): 3
 -----Product: kuřecí-----
 Get kuřecí
-Presence of product on Node (in ticks): 2
+Presence of product on Node (in ticks): 1
 
 
 
@@ -464,7 +464,7 @@ ProductTransaction{product=banán, creator=Distributor, receiver=Customer}
 FinancialTransaction{amount=23.4, transactionPaid=ProductTransaction{product=banán, creator=Distributor, receiver=Customer}}
 Action{product=hovězí, type=GRILL_MEAT, duration=2, temperature=200}
 Requirement{id=38, creator=Seller, transactionType=SALE, productName='jablko', TTL=5}
-Customer consumed okurka VEGETABLE
+Customer consumed banán FRUIT
 -----tick-----
 Processor accepted Requirement{id=35, creator=Seller, transactionType=PURCHASE, productName='paprika', TTL=4}
 ProductTransaction{product=paprika, creator=Processor, receiver=Seller}
@@ -477,7 +477,7 @@ FinancialTransaction{amount=13.65, transactionPaid=ProductTransaction{product=hr
 Requirement{id=40, creator=Processor, transactionType=SALE, productName='rajče', TTL=5}
 Action{product=paprika, type=WRAP_INTO_GIFT_PACKAGE, duration=1, temperature=21}
 Requirement{id=41, creator=Distributor, transactionType=SALE, productName='hruška', TTL=5}
-Customer consumed banán FRUIT
+Customer consumed okurka VEGETABLE
 -----tick-----
 Seller accepted Requirement{id=40, creator=Processor, transactionType=SALE, productName='rajče', TTL=4}
 Requirement{id=42, creator=Seller, transactionType=PURCHASE, productName='rajče', TTL=5}
@@ -518,7 +518,7 @@ FinancialTransaction{amount=9.75, transactionPaid=ProductTransaction{product=pap
 Requirement{id=52, creator=Processor, transactionType=SALE, productName='hovězí', TTL=5}
 Requirement{id=53, creator=Seller, transactionType=SALE, productName='vepřové', TTL=5}
 Requirement{id=54, creator=Distributor, transactionType=SALE, productName='paprika', TTL=5}
-Customer consumed jablko FRUIT
+Customer consumed hruška FRUIT
 -----tick-----
 Processor accepted Requirement{id=51, creator=Seller, transactionType=PURCHASE, productName='kuřecí', TTL=4}
 ProductTransaction{product=kuřecí, creator=Processor, receiver=Seller}
@@ -533,7 +533,7 @@ ProductTransaction{product=paprika, creator=Distributor, receiver=Customer}
 FinancialTransaction{amount=39, transactionPaid=ProductTransaction{product=kuřecí, creator=Processor, receiver=Seller}}
 FinancialTransaction{amount=11.7, transactionPaid=ProductTransaction{product=paprika, creator=Distributor, receiver=Customer}}
 Action{product=kuřecí, type=WRAP_INTO_GIFT_PACKAGE, duration=1, temperature=21}
-Customer consumed hruška FRUIT
+Customer consumed paprika VEGETABLE
 -----tick-----
 Processor accepted Requirement{id=55, creator=Seller, transactionType=PURCHASE, productName='hovězí', TTL=4}
 ProductTransaction{product=hovězí, creator=Processor, receiver=Seller}
@@ -559,7 +559,7 @@ Distributor accepted Requirement{id=62, creator=Seller, transactionType=SALE, pr
 Requirement{id=63, creator=Distributor, transactionType=PURCHASE, productName='kuřecí', TTL=5}
 FinancialTransaction{amount=97.5, transactionPaid=ProductTransaction{product=hovězí, creator=Seller, receiver=Distributor}}
 Requirement{id=64, creator=Distributor, transactionType=SALE, productName='hovězí', TTL=5}
-Customer consumed paprika VEGETABLE
+Customer consumed jablko FRUIT
 -----tick-----
 Customer accepted Requirement{id=64, creator=Distributor, transactionType=SALE, productName='hovězí', TTL=4}
 Requirement{id=65, creator=Customer, transactionType=PURCHASE, productName='hovězí', TTL=5}
@@ -570,14 +570,14 @@ ProductTransaction{product=hovězí, creator=Distributor, receiver=Customer}
 FinancialTransaction{amount=58.5, transactionPaid=ProductTransaction{product=kuřecí, creator=Seller, receiver=Distributor}}
 FinancialTransaction{amount=117, transactionPaid=ProductTransaction{product=hovězí, creator=Distributor, receiver=Customer}}
 Requirement{id=66, creator=Distributor, transactionType=SALE, productName='kuřecí', TTL=5}
-Customer consumed hovězí MEAT
+Customer consumed vepřové MEAT
 -----tick-----
 Customer accepted Requirement{id=66, creator=Distributor, transactionType=SALE, productName='kuřecí', TTL=4}
 Requirement{id=67, creator=Customer, transactionType=PURCHASE, productName='kuřecí', TTL=5}
 Distributor accepted Requirement{id=67, creator=Customer, transactionType=PURCHASE, productName='kuřecí', TTL=5}
 ProductTransaction{product=kuřecí, creator=Distributor, receiver=Customer}
 FinancialTransaction{amount=70.2, transactionPaid=ProductTransaction{product=kuřecí, creator=Distributor, receiver=Customer}}
-Customer consumed vepřové MEAT
------tick-----
 Customer consumed kuřecí MEAT
 -----tick-----
+Customer consumed hovězí MEAT
+-----tick-----

src/main/java/cz/cvut/fel/sit/omo/foodchain/FoodChain.java

@@ -20,76 +20,64 @@ import java.util.logging.LogManager;
 import java.util.logging.Logger;
 
 /**
- * Main application class
+ * Main application class.
  */
-public class FoodChain
+public class FoodChain {
-{
 
-    private static FactoryManager factoryManager = new FactoryManager();
+    private static final FactoryManager factoryManager = new FactoryManager();
 
     /**
      * Main application method that parses configuration and starts Ticker.
+     *
      * @param args args
      */
-    public static void main(String[] args)
+    public static void main(String[] args) {
-    {
         LogManager.getLogManager().reset();
         Logger rootLogger = LogManager.getLogManager().getLogger("");
 
         rootLogger.addHandler(new ReportLogger());
 
-        if(args.length < 1)
+        if (args.length < 1) {
-        {
             parseChannels("conf/channels.xml");
             parseNodes("conf/nodes.xml");
             parseProducts("conf/products.xml");
             parseScenarios("conf/scenarios.xml");
-
+        } else if (args.length < 2) {
-//            rootLogger.log(Level.INFO,"Parsed default scenarios");
-        }
-        else if (args.length < 2)
-        {
             parseChannels("conf/channels.xml");
             parseNodes("conf/nodes.xml");
             parseProducts("conf/products.xml");
             parseScenarios(args[0]);
-
+        } else {
-//            rootLogger.log(Level.INFO,"Parsed non-default scenarios");
-        }
-        else
-        {
             parseChannels(args[1]);
             parseNodes(args[2]);
             parseProducts(args[3]);
             parseScenarios(args[4]);
-
-//            rootLogger.log(Level.INFO,"Parsed non-default scenarios");
         }
 
         Ticker.start();
-        while (Ticker.getTimer().isRunning()) {}
+        while (Ticker.getTimer().isRunning()) {
+        }
 
         ReportingManager reportingManager = new ReportingManager();
 
-        reportingManager.createFileTextReport("reports.txt");
+        reportingManager.createFileTextReport("reports/reports.txt");
     }
 
-    public static FactoryManager getFactoryManager() { return factoryManager; }
+    public static FactoryManager getFactoryManager() {
+        return factoryManager;
+    }
 
     /**
      * Provides connection between FoodChain and ConfigurationParser.
-     * @param path file path
+     *
+     * @param path           file path
      * @param rootElementTag tag to be parsed
      * @return parser result
      */
-    private static ParserResult parseDocument(String path, String rootElementTag)
+    private static ParserResult parseDocument(String path, String rootElementTag) {
-    {
+        try {
-        try
-        {
             ConfigurationParser.parseDocument(path);
-        }
+        } catch (ParserConfigurationException | SAXException | IOException e) {
-        catch (ParserConfigurationException | SAXException | IOException e)
-        {
             System.err.println(e.getMessage());
 
         }
@@ -99,14 +87,13 @@ public class FoodChain
 
     /**
      * Parses channels.
+     *
      * @param path file path
      */
-    private static void parseChannels(String path)
+    private static void parseChannels(String path) {
-    {
         ParserResult parserResult = parseDocument(path, "channel");
         List<ParserResultElement> elements = parserResult.getElements();
-        for (ParserResultElement el : elements)
+        for (ParserResultElement el : elements) {
-        {
             ChannelBase res = getFactoryManager().getChannelFactoryInstance().makeChannel(el);
             getFactoryManager().getPoolDatabaseInstance().getChannelPoolInstance().add(res);
         }
@@ -114,14 +101,13 @@ public class FoodChain
 
     /**
      * Parses nodes.
+     *
      * @param path file path
      */
-    private static void parseNodes(String path)
+    private static void parseNodes(String path) {
-    {
         ParserResult parserResult = parseDocument(path, "node");
         List<ParserResultElement> elements = parserResult.getElements();
-        for (ParserResultElement el : elements)
+        for (ParserResultElement el : elements) {
-        {
             NodeBase res = getFactoryManager().getNodeFactoryInstance().makeNode(el);
             getFactoryManager().getPoolDatabaseInstance().getNodePoolInstance().add(res);
         }
@@ -129,14 +115,13 @@ public class FoodChain
 
     /**
      * Parses products.
+     *
      * @param path file path
      */
-    private static void parseProducts(String path)
+    private static void parseProducts(String path) {
-    {
         ParserResult parserResult = parseDocument(path, "product");
         List<ParserResultElement> elements = parserResult.getElements();
-        for (ParserResultElement el : elements)
+        for (ParserResultElement el : elements) {
-        {
             Product res = getFactoryManager().getProductFactoryInstance().makeProduct(el);
             getFactoryManager().getPoolDatabaseInstance().getProductPoolInstance().add(res);
         }
@@ -144,14 +129,13 @@ public class FoodChain
 
     /**
      * Parses scenarios.
+     *
      * @param path file path
      */
-    private static void parseScenarios(String path)
+    private static void parseScenarios(String path) {
-    {
         ParserResult parserResult = parseDocument(path, "scenario");
         List<ParserResultElement> elements = parserResult.getElements();
-        for (ParserResultElement el : elements)
+        for (ParserResultElement el : elements) {
-        {
             Scenario res = getFactoryManager().getScenarioFactoryInstance().makeScenario(el);
             getFactoryManager().getPoolDatabaseInstance().getScenarioPoolInstance().add(res);
         }

src/main/java/cz/cvut/fel/sit/omo/foodchain/channel/ChannelBase.java

@@ -15,59 +15,57 @@ import java.util.Set;
 import java.util.stream.Collectors;
 
 /**
- * Base class for all channels
+ * Base class for all channels.
  */
 public abstract class ChannelBase implements Observable {
     protected ProductType productType;
     protected Queue<Requirement> requirements;
     protected Queue<Transaction> transactions;
 
-    private Set<ChannelObserver> subscribers;
+    private final Set<ChannelObserver> subscribers;
 
-    public ChannelBase(ProductType type)
+    public ChannelBase(ProductType type) {
-    {
         this.requirements = new LinkedList<>();
         this.transactions = new LinkedList<>();
         this.subscribers = new HashSet<>();
         this.productType = type;
     }
 
-    public ChannelBase()
+    public ChannelBase() {
-    {
         this.requirements = new LinkedList<>();
         this.transactions = new LinkedList<>();
         this.subscribers = new HashSet<>();
         this.productType = ProductType.OTHER;
     }
 
-    public Queue<Transaction> getTransactions(NodeBase node)
+    public Queue<Transaction> getTransactions(NodeBase node) {
-    {
         return this.transactions.stream().filter(t -> t.getNodeReceiver().equals(node)).collect(Collectors.toCollection(LinkedList::new));
     }
 
-    public Queue<Requirement> getCurrentRequirements()
+    public Queue<Requirement> getCurrentRequirements() {
-    {
         return this.requirements;
     }
 
     /**
      * Adds new requirement to the requirement Queue.
+     *
      * @param requirement requirement
      */
-    public void addRequirement(Requirement requirement)
+    public void addRequirement(Requirement requirement) {
-    {
         this.requirements.add(requirement);
     }
 
     /**
      * Passes tick onto every requirement in channel, if requirement has TTL= 0 deletes it, notifies all nodes with current requirements.
+     *
      * @return if there are any requirements
      */
     public boolean tick() {
         requirements.forEach(Requirement::tick);
         try {
             requirements.stream().filter(r -> r.getTTL() == 0).forEach(re -> re.getCreator().getStorage().getProduct(re.getProductName(), re.getProductType()).setStateToAvailable());
-        } catch (Exception ignored) {}
+        } catch (Exception ignored) {
+        }
         requirements = requirements.stream().filter(r -> r.getTTL() > 0).collect(Collectors.toCollection(LinkedList::new));
         notifyAllObservers();
         return requirements.size() != 0;
@@ -77,56 +75,65 @@ public abstract class ChannelBase implements Observable {
      * Notifies all nodes apart from creator about a requirement.
      */
     @Override
-    public void notifyAllObservers(){
+    public void notifyAllObservers() {
         subscribers.forEach(subscriber -> new LinkedList<>(requirements).forEach(r -> subscriber.update(r, this)));
     }
 
     /**
      * Adds observer to list of subscribed nodes.
+     *
      * @param observer channelobserver
      */
     @Override
-    public void attach(ChannelObserver observer){
+    public void attach(ChannelObserver observer) {
         subscribers.add(observer);
     }
 
     /**
      * Removes observer from list of subscribed nodes.
+     *
      * @param observer channelobserver
      */
     @Override
-    public void detach(ChannelObserver observer){ subscribers.remove(observer); }
+    public void detach(ChannelObserver observer) {
+        subscribers.remove(observer);
+    }
 
     /**
      * Adds new transaction to the transaction Queue.
+     *
      * @param transaction transaction
      */
-    public void addTransaction(Transaction transaction)
+    public void addTransaction(Transaction transaction) {
-    {
         this.transactions.add(transaction);
         try {
             ((ProductTransaction) transaction).getProduct().setStateToInTransit();
+        } catch (Exception ignored) {
         }
-        catch (Exception ignored) {}
     }
 
     /**
      * Removes requirement from list of active requirements.
+     *
      * @param requirement requirement
      */
-    public void disposeOf(Requirement requirement) { this.requirements.remove(requirement); }
+    public void disposeOf(Requirement requirement) {
+        this.requirements.remove(requirement);
+    }
 
     /**
      * Removes transaction from list of unprocessed transactions.
+     *
      * @param transaction transaction
      */
-    public void disposeOf(Transaction transaction) { this.transactions.remove(transaction); }
+    public void disposeOf(Transaction transaction) {
+        this.transactions.remove(transaction);
+    }
 
     /**
      * Clears all active requirements from this channel.
      */
-    public void clearRequirements()
+    public void clearRequirements() {
-    {
         this.requirements.clear();
     }
 

src/main/java/cz/cvut/fel/sit/omo/foodchain/channel/ChannelSubscriptionType.java

@@ -1,7 +1,7 @@
 package cz.cvut.fel.sit.omo.foodchain.channel;
 
 /**
- * Enum class for different subscription types
+ * Enum class for different subscription types.
  */
 public enum ChannelSubscriptionType {
 

src/main/java/cz/cvut/fel/sit/omo/foodchain/channel/FruitChannel.java

@@ -3,12 +3,10 @@ package cz.cvut.fel.sit.omo.foodchain.channel;
 import cz.cvut.fel.sit.omo.foodchain.product.ProductType;
 
 /**
- * Channel for transporting fruit
+ * Channel for transporting fruit.
  */
-public class FruitChannel extends ChannelBase
+public class FruitChannel extends ChannelBase {
-{
+    public FruitChannel() {
-    public FruitChannel()
-    {
         super(ProductType.FRUIT);
     }
 }

src/main/java/cz/cvut/fel/sit/omo/foodchain/channel/MeatChannel.java

@@ -3,12 +3,10 @@ package cz.cvut.fel.sit.omo.foodchain.channel;
 import cz.cvut.fel.sit.omo.foodchain.product.ProductType;
 
 /**
- * Channel for transporting meat
+ * Channel for transporting meat.
  */
-public class MeatChannel extends ChannelBase
+public class MeatChannel extends ChannelBase {
-{
+    public MeatChannel() {
-    public MeatChannel()
-    {
         super(ProductType.MEAT);
     }
 }

src/main/java/cz/cvut/fel/sit/omo/foodchain/channel/OtherChannel.java

@@ -1,12 +1,10 @@
 package cz.cvut.fel.sit.omo.foodchain.channel;
 
 /**
- * Channel for transporting other products
+ * Channel for transporting other products.
  */
-public class OtherChannel extends ChannelBase
+public class OtherChannel extends ChannelBase {
-{
+    public OtherChannel() {
-    public OtherChannel()
-    {
         super();
     }
 }

src/main/java/cz/cvut/fel/sit/omo/foodchain/channel/VegetableChannel.java

@@ -3,12 +3,10 @@ package cz.cvut.fel.sit.omo.foodchain.channel;
 import cz.cvut.fel.sit.omo.foodchain.product.ProductType;
 
 /**
- * Channel for transporting vegetable
+ * Channel for transporting vegetable.
  */
-public class VegetableChannel extends ChannelBase
+public class VegetableChannel extends ChannelBase {
-{
+    public VegetableChannel() {
-    public VegetableChannel()
-    {
         super(ProductType.VEGETABLE);
     }
 }

src/main/java/cz/cvut/fel/sit/omo/foodchain/factory/ChannelFactory.java

@@ -9,31 +9,26 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 /**
- * Factory for creating channels
+ * Factory for creating channels.
  */
-public class ChannelFactory
+public class ChannelFactory {
-{
     private static final Logger LOGGER = Logger.getLogger(ChannelFactory.class.getName());
+
     /**
      * Creates channel based on channel type (Fruit, Vegetable, Meat, Other).
+     *
      * @param input data from channel that is created
      * @return created Channel (FruitChannel, VegetableChannel, MeatChannel, OtherChannel)
      */
-    public ChannelBase makeChannel(ParserResultElement input)
+    public ChannelBase makeChannel(ParserResultElement input) {
-    {
         ChannelBase c = null;
-        try
+        try {
-        {
             ProductType channelType = ProductType.valueOf(input.getAttribute("type"));
             c = makeChannelFromChannelType(channelType);
 
-        }
+        } catch (IllegalArgumentException e) {
-        catch (IllegalArgumentException e)
-        {
             LOGGER.log(Level.SEVERE, "! Wrong type of enum in ChannelFactory: " + e);
-        }
+        } catch (Exception e) {
-        catch (Exception e)
-        {
             LOGGER.log(Level.SEVERE, "! Fatal error in ChannelFactory: " + e);
         }
         return c;
@@ -41,13 +36,12 @@ public class ChannelFactory
 
     /**
      * Creates channel based on channel type (Fruit, Vegetable, Meat, Other).
+     *
      * @param typeOfChannel channel type to be created
      * @return created Channel (FruitChannel, VegetableChannel, MeatChannel, OtherChannel)
      */
-    private ChannelBase makeChannelFromChannelType(ProductType typeOfChannel)
+    private ChannelBase makeChannelFromChannelType(ProductType typeOfChannel) {
-    {
+        switch (typeOfChannel) {
-        switch (typeOfChannel)
-        {
             case FRUIT:
                 return new FruitChannel();
             case VEGETABLE:

src/main/java/cz/cvut/fel/sit/omo/foodchain/factory/FactoryManager.java

@@ -6,70 +6,49 @@ import cz.cvut.fel.sit.omo.foodchain.util.Singleton;
 import java.lang.reflect.InvocationTargetException;
 
 /**
- * Manager class for all factories and pool database
+ * Manager class for all factories and pool database.
  */
-public class FactoryManager
+public class FactoryManager {
-{
+    public NodeFactory getNodeFactoryInstance() {
-    public NodeFactory getNodeFactoryInstance()
+        try {
-    {
-        try
-        {
             return Singleton.getInstance(NodeFactory.class);
-        }
+        } catch (IllegalAccessException | InstantiationException | NoSuchMethodException | InvocationTargetException e) {
-        catch (IllegalAccessException | InstantiationException | NoSuchMethodException | InvocationTargetException e)
-        {
             e.printStackTrace();
         }
         return null;
     }
 
-    public ChannelFactory getChannelFactoryInstance()
+    public ChannelFactory getChannelFactoryInstance() {
-    {
+        try {
-        try
-        {
             return Singleton.getInstance(ChannelFactory.class);
-        }
+        } catch (IllegalAccessException | InstantiationException | NoSuchMethodException | InvocationTargetException e) {
-        catch (IllegalAccessException | InstantiationException | NoSuchMethodException | InvocationTargetException e)
-        {
             e.printStackTrace();
         }
         return null;
     }
 
-    public ScenarioFactory getScenarioFactoryInstance()
+    public ScenarioFactory getScenarioFactoryInstance() {
-    {
+        try {
-        try
-        {
             return Singleton.getInstance(ScenarioFactory.class);
-        }
+        } catch (IllegalAccessException | InstantiationException | NoSuchMethodException | InvocationTargetException e) {
-        catch (IllegalAccessException | InstantiationException | NoSuchMethodException | InvocationTargetException e)
-        {
             e.printStackTrace();
         }
         return null;
     }
 
-    public ProductFactory getProductFactoryInstance()
+    public ProductFactory getProductFactoryInstance() {
-    {
+        try {
-        try
-        {
             return Singleton.getInstance(ProductFactory.class);
-        }
+        } catch (IllegalAccessException | InstantiationException | NoSuchMethodException | InvocationTargetException e) {
-        catch (IllegalAccessException | InstantiationException | NoSuchMethodException | InvocationTargetException e)
-        {
             e.printStackTrace();
         }
         return null;
     }
 
-    public PoolDatabase getPoolDatabaseInstance()
+    public PoolDatabase getPoolDatabaseInstance() {
-    {
+        try {
-        try
-        {
             return Singleton.getInstance(PoolDatabase.class);
-        }
+        } catch (IllegalAccessException | InstantiationException | NoSuchMethodException | InvocationTargetException e) {
-        catch (IllegalAccessException | InstantiationException | NoSuchMethodException | InvocationTargetException e)
-        {
             e.printStackTrace();
         }
         return null;

src/main/java/cz/cvut/fel/sit/omo/foodchain/factory/NodeFactory.java

@@ -12,18 +12,18 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 /**
- * Factory for creating nodes
+ * Factory for creating nodes.
  */
-public class NodeFactory
+public class NodeFactory {
-{
     private static final Logger LOGGER = Logger.getLogger(NodeFactory.class.getName());
+
     /**
      * Creates Node based on input ParserResultElement.
+     *
      * @param input data from Node that is created
      * @return created Node
      */
-    public NodeBase makeNode(ParserResultElement input)
+    public NodeBase makeNode(ParserResultElement input) {
-    {
         NodeBase n = null;
         NodeType nodeType = null;
         String subsChannels = "";
@@ -31,26 +31,20 @@ public class NodeFactory
         double margin = 0;
         double acceptableDiscount = 0;
 
-        try
+        try {
-        {
             nodeType = NodeType.valueOf(input.getAttribute("type"));
 
             subsChannels = input.getChild("channels");
             startMoney = Double.parseDouble(input.getChild("money"));
             margin = Double.parseDouble(input.getChild("margin"));
             acceptableDiscount = Double.parseDouble(input.getChild("discount"));
-        }
+        } catch (IllegalArgumentException e) {
-        catch (IllegalArgumentException e)
-        {
             LOGGER.log(Level.SEVERE, "! Wrong type of enum in NodeFactory: " + e.getMessage());
-        }
+        } catch (Exception e) {
-        catch (Exception e)
-        {
             LOGGER.log(Level.SEVERE, "! Fatal error in NodeFactory: " + e.getMessage());
         }
 
-        switch (Objects.requireNonNull(nodeType))
+        switch (Objects.requireNonNull(nodeType)) {
-        {
             case Farmer:
                 n = new Farmer(startMoney, margin, acceptableDiscount);
                 break;
@@ -69,11 +63,9 @@ public class NodeFactory
             default:
         }
 
-        if (n != null)
+        if (n != null) {
-        {
             String[] subs = subsChannels.split(";");
-            for (String s : subs)
+            for (String s : subs) {
-            {
                 String[] el = s.split(" ");
 
                 ChannelPool temp = FoodChain.getFactoryManager().getPoolDatabaseInstance().getChannelPoolInstance();

src/main/java/cz/cvut/fel/sit/omo/foodchain/factory/ProductFactory.java

@@ -9,22 +9,20 @@ import java.util.logging.Logger;
 
 
 /**
- * Factory for creating products
+ * Factory for creating products.
  */
-public class ProductFactory
+public class ProductFactory {
-{
     private static final Logger LOGGER = Logger.getLogger(ProductFactory.class.getName());
 
     /**
      * Creates Product based on input ParserResultElement.
+     *
      * @param input data from Product that is created
      * @return created Product
      */
-    public Product makeProduct(ParserResultElement input)
+    public Product makeProduct(ParserResultElement input) {
-    {
         Product p = null;
-        try
+        try {
-        {
             String name = input.getChild("name");
             ProductType productType = ProductType.valueOf(input.getChild("type"));
             //ProductState productState = ProductState.valueOf(input.getChild("state"));
@@ -32,13 +30,9 @@ public class ProductFactory
 
             //p = new Product(name, price, productType, productState);
             p = new Product(name, productType, price);
-        }
+        } catch (IllegalArgumentException e) {
-        catch (IllegalArgumentException e)
-        {
             LOGGER.log(Level.SEVERE, "! Wrong type of enum in ProductFactory: " + e.getMessage());
-        }
+        } catch (Exception e) {
-        catch (Exception e)
-        {
             LOGGER.log(Level.SEVERE, "! Fatal error in ProductFactory: " + e.getMessage());
         }
         return p;

src/main/java/cz/cvut/fel/sit/omo/foodchain/factory/ScenarioFactory.java

@@ -17,23 +17,22 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 /**
- * Factory for creating scenarios
+ * Factory for creating scenarios.
  */
-public class ScenarioFactory
+public class ScenarioFactory {
-{
     private static final Logger LOGGER = Logger.getLogger(ScenarioFactory.class.getName());
+
     /**
      * Creates Scenario based on input ParserResultElement.
+     *
      * @param input data from Scenario that is created
      * @return created Scenario
      */
-    public Scenario makeScenario(ParserResultElement input)
+    public Scenario makeScenario(ParserResultElement input) {
-    {
         Scenario s = null;
         NodeBase node = null;
 
-        try
+        try {
-        {
             String nodeType = input.getAttribute("type");
             node = FoodChain.getFactoryManager().getPoolDatabaseInstance().getNodePoolInstance().findAll().stream()
                     .filter(ch -> ch.getClass().getSimpleName().equals(nodeType)).findFirst().orElse(null);
@@ -41,11 +40,9 @@ public class ScenarioFactory
             String[] steps = Arrays.stream(input.getChild("steps").split("\n")).filter(st -> !st.strip().equals("")).toArray(String[]::new);
             List<ScenarioStep> scenarioSteps = new LinkedList<>();
             ScenarioStep scenarioStep = null;
-            for (String step : steps)
+            for (String step : steps) {
-            {
                 String[] parts = step.strip().split(" ");
-                switch (parts[0])
+                switch (parts[0]) {
-                {
                     case "generate":
                         scenarioStep = new GenerateProductStep((Farmer) node);
                         break;
@@ -53,12 +50,9 @@ public class ScenarioFactory
                         scenarioStep = new ConsumeProductStep((Customer) node);
                         break;
                     case "doaction":
-                        if (parts.length == 2)
+                        if (parts.length == 2) {
-                        {
                             scenarioStep = new DoActionStep(node, ProductOperationType.valueOf(parts[1]));
-                        }
+                        } else {
-                        else
-                        {
                             scenarioStep = new DoActionStep(node, ProductOperationType.valueOf(parts[1]), parts[2]);
                         }
                         break;
@@ -75,9 +69,7 @@ public class ScenarioFactory
                 scenarioSteps.add(scenarioStep);
             }
             s = new Scenario(scenarioSteps);
-        }
+        } catch (IllegalArgumentException e) {
-        catch (IllegalArgumentException e)
-        {
             LOGGER.log(Level.SEVERE, "! Wrong type of enum in ScenarioFactory: " + e.getMessage());
         }
 

src/main/java/cz/cvut/fel/sit/omo/foodchain/node/Customer.java

@@ -6,7 +6,7 @@ import java.util.Random;
 import java.util.logging.Level;
 
 /**
- * Customer node
+ * Customer node.
  */
 public class Customer extends NodeBase {
 
@@ -18,8 +18,7 @@ public class Customer extends NodeBase {
     }
 
     public void consumeProduct() {
-        if(getStorage().getNumberOfStoredProducts() == 0)
+        if (getStorage().getNumberOfStoredProducts() == 0) {
-        {
             LOGGER.log(Level.WARNING, this.nodeType + " tried to consume non existing product.");
             return;
         }

src/main/java/cz/cvut/fel/sit/omo/foodchain/node/Distributor.java

@@ -1,7 +1,7 @@
 package cz.cvut.fel.sit.omo.foodchain.node;
 
 /**
- * Distributor node
+ * Distributor node.
  */
 public class Distributor extends NodeBase {
 

src/main/java/cz/cvut/fel/sit/omo/foodchain/node/Farmer.java

@@ -7,7 +7,7 @@ import javax.naming.InsufficientResourcesException;
 import java.util.logging.Level;
 
 /**
- * Farmer node
+ * Farmer node.
  */
 public class Farmer extends NodeBase {
 

src/main/java/cz/cvut/fel/sit/omo/foodchain/node/NodeBase.java

@@ -24,23 +24,20 @@ import java.util.logging.Logger;
 
 
 /**
- * Base class for all nodes
+ * Base class for all nodes.
  */
 public class NodeBase implements ChannelObserver {
     protected static final Logger LOGGER = Logger.getLogger(NodeBase.class.getName());
-
+    protected final Storage storage;
     private final Map<ChannelBase, ChannelSubscriptionType> subscribedChannels = new HashMap<>();
     private final List<Transaction> refusedTransactions = new LinkedList<>();
     private final List<RefusedRequirement> refusedRequirements = new LinkedList<>();
-
-    private MonetaryAmount money;
     private final double margin;
     private final double acceptableDiscount;
-
-    protected final Storage storage;
     protected NodeType nodeType;
     protected NodeType allowedSeller;
     protected NodeType allowedPurchaser;
+    private MonetaryAmount money;
 
     public NodeBase() {
         this.nodeType = NodeType.None;
@@ -141,7 +138,7 @@ public class NodeBase implements ChannelObserver {
     /**
      * Adds transaction to refused transactions.
      *
-     * @param transaction
+     * @param transaction transaction
      */
     private void refuseTransaction(Transaction transaction) {
         transaction.endTransaction();
@@ -220,22 +217,11 @@ public class NodeBase implements ChannelObserver {
         channel.attach(this);
     }
 
-
-    /**
-     * Removes channel from subscribed channels.
-     *
-     * @param channel
-     */
-    public void unsubscribeFromChannel(ChannelBase channel) {
-        subscribedChannels.remove(channel);
-    }
-
-
     /**
      * Proceed specific type of action on provided product if its possible. (Propagated to its storage).
      *
-     * @param action  type of product operation to do
+     * @param action type of product operation to do
-     * @param name product to proceed
+     * @param name   product to proceed
      */
     public void doAction(ProductOperationType action, String name) throws IllegalCallerException, InsufficientResourcesException {
         this.storage.doAction(action, name);
@@ -271,7 +257,9 @@ public class NodeBase implements ChannelObserver {
         return refusedTransactions;
     }
 
-    public List<RefusedRequirement> getRefusedRequirements() { return refusedRequirements; }
+    public List<RefusedRequirement> getRefusedRequirements() {
+        return refusedRequirements;
+    }
 
     public NodeType getAllowedSeller() {
         return allowedSeller;
@@ -281,12 +269,16 @@ public class NodeBase implements ChannelObserver {
         return allowedPurchaser;
     }
 
-    public double getMargin() { return margin; }
+    public double getMargin() {
+        return margin;
+    }
 
-    public double getAcceptableDiscount() { return acceptableDiscount; }
+    public double getAcceptableDiscount() {
+        return acceptableDiscount;
+    }
 
     /**
-     * Adds amount to current assets
+     * Adds amount to current assets.
      *
      * @param m amount to be added
      */
@@ -349,7 +341,7 @@ public class NodeBase implements ChannelObserver {
     }
 
     /**
-     * Chacks if product is available or if node has enough money
+     * Checks if product is available or if node has enough money.
      *
      * @param req requirement
      * @return product is available or node has enough money

src/main/java/cz/cvut/fel/sit/omo/foodchain/node/NodeType.java

@@ -1,7 +1,7 @@
 package cz.cvut.fel.sit.omo.foodchain.node;
 
 /**
- * Enum class for all nodes
+ * Enum class for all nodes.
  */
 public enum NodeType {
     Farmer, Processor, Distributor, Seller, Customer, None, All

src/main/java/cz/cvut/fel/sit/omo/foodchain/node/Processor.java

@@ -1,7 +1,7 @@
 package cz.cvut.fel.sit.omo.foodchain.node;
 
 /**
- * Processor node
+ * Processor node.
  */
 public class Processor extends NodeBase {
 

src/main/java/cz/cvut/fel/sit/omo/foodchain/node/Seller.java

@@ -1,7 +1,7 @@
 package cz.cvut.fel.sit.omo.foodchain.node;
 
 /**
- * Seller node
+ * Seller node.
  */
 public class Seller extends NodeBase {
 

src/main/java/cz/cvut/fel/sit/omo/foodchain/node/Storage.java

@@ -9,107 +9,97 @@ import cz.cvut.fel.sit.omo.foodchain.product.ProductType;
 import javax.naming.InsufficientResourcesException;
 import java.util.LinkedList;
 import java.util.List;
-import java.util.stream.Collectors;
 
 /**
- * Storage sub-node for storing products of other nodes
+ * Storage sub-node for storing products of other nodes.
  */
-public class Storage
+public class Storage {
-{
     private final NodeBase storageOwner;
     private final List<Product> products = new LinkedList<>();
     private final List<ProductCache> cache = new LinkedList<>();
 
-    public Storage(NodeBase owner)
+    public Storage(NodeBase owner) {
-    {
         this.storageOwner = owner;
     }
 
     /**
      * Adds provided product into the storage.
-     * @param product
+     *
+     * @param product product to be stored
      */
-    public void storeProduct(Product product)
+    public void storeProduct(Product product) {
-    {
         this.products.add(product);
         this.cache.add(new ProductCache(product.getName(), product.getProductType()));
     }
 
-    /**
-     * Adds all of the provided products into the storage.
-     * @param products
-     */
-    public void storeProducts(List<Product> products)
-    {
-        this.products.addAll(products);
-        this.cache.addAll(products.stream().map(p -> new ProductCache(p.getName(), p.getProductType())).collect(Collectors.toList()));
-    }
-
     /**
      * Finds a product (first if there is multiple of them) based on its name and type.
+     *
      * @param name name of product to find
      * @param type type of product to find
      * @return product if found, null if product is not in storage
      */
-    public Product getProduct(String name, ProductType type)
+    public Product getProduct(String name, ProductType type) {
-    {
         return products.stream().filter(ch -> (ch.getProductType().equals(type) || type.equals(ProductType.ALL)) && ch.getName().equals(name)).findFirst().orElse(null);
     }
 
-    public List<Product> getProducts()
+    public List<Product> getProducts() {
-    {
         return products;
     }
 
-    public List<ProductCache> getCache() { return cache; }
+    public List<ProductCache> getCache() {
+        return cache;
+    }
 
     /**
      * Returns number of products in storage.
-     * @return
+     *
+     * @return number of products in storage
      */
-    public int getNumberOfStoredProducts()
+    public int getNumberOfStoredProducts() {
-    {
         return this.products.size();
     }
 
     /**
      * Checks whether storage contains provided product.
+     *
      * @param product product to check
      * @return true if contains, false if not
      */
-    public boolean containsProduct(Product product)
+    public boolean containsProduct(Product product) {
-    {
         return products.contains(product);
     }
 
     /**
      * Checks whether storage contains provided product.
+     *
      * @param name name of product to check
      * @param type type of product to check
      * @return true if contains, false if not
      */
-    public boolean containsProduct(String name, ProductType type)
+    public boolean containsProduct(String name, ProductType type) {
-    {
+        return this.getProduct(name, type) != null;
-        return this.getProduct(name,type) != null;
     }
 
     /**
      * Removes provided product from storage if storage contains this product. (Removes only first found).
+     *
      * @param product product to remove
      */
-    public void removeProduct(Product product)
+    public void removeProduct(Product product) {
-    {
         if (containsProduct(product))
             this.products.remove(product);
     }
 
     /**
      * Proceed specific type of action on provided product if its possible.
-     * @param action  type of product operation to do
+     *
+     * @param action      type of product operation to do
      * @param productName product to process
      */
     public void doAction(ProductOperationType action, String productName) throws IllegalCallerException, InsufficientResourcesException {
-        if (!containsProduct(productName, action.getProductType())) throw new InsufficientResourcesException(storageOwner.getClass().getSimpleName() + " tried to do action " + action.toString() + " to unavailable product " + productName);
+        if (!containsProduct(productName, action.getProductType()))
+            throw new InsufficientResourcesException(storageOwner.getClass().getSimpleName() + " tried to do action " + action.toString() + " to unavailable product " + productName);
         Product product = getProduct(productName, action.getProductType());
         if (action.getNode().equals(this.storageOwner.getNodeType()) || action.getNode().equals(NodeType.All))
             if (action.getProductType().equals(product.getProductType()) || action.getProductType().equals(ProductType.ALL))
@@ -122,10 +112,10 @@ public class Storage
 
     /**
      * Calls specific ProductOperation on each product in stock.
+     *
      * @param action ProductOperationType
      */
-    public void doAction(ProductOperationType action)
+    public void doAction(ProductOperationType action) {
-    {
         this.products.forEach(t -> new Action(this.storageOwner, t, action));
     }
 

src/main/java/cz/cvut/fel/sit/omo/foodchain/node/helper/ProductCache.java

@@ -3,7 +3,7 @@ package cz.cvut.fel.sit.omo.foodchain.node.helper;
 import cz.cvut.fel.sit.omo.foodchain.product.ProductType;
 
 /**
- * Model for product in Storage for saving ticks in Node
+ * Model for product in Storage for saving ticks in Node.
  */
 public class ProductCache {
     private final String name;
@@ -16,11 +16,19 @@ public class ProductCache {
         this.duration = 0;
     }
 
-    public String getName() { return name; }
+    public String getName() {
+        return name;
+    }
 
-    public ProductType getType() { return type; }
+    public ProductType getType() {
+        return type;
+    }
 
-    public int getDuration() { return duration; }
+    public int getDuration() {
+        return duration;
+    }
 
-    public void addToDuration() { duration++; }
+    public void addToDuration() {
+        duration++;
+    }
 }

src/main/java/cz/cvut/fel/sit/omo/foodchain/node/helper/RefusedRequirement.java

@@ -6,7 +6,7 @@ import cz.cvut.fel.sit.omo.foodchain.product.ProductType;
 import javax.money.MonetaryAmount;
 
 /**
- * Model for saving Requirements, that was used in double spending
+ * Model for saving Requirements, that was used in double spending.
  */
 public class RefusedRequirement {
 
@@ -22,13 +22,21 @@ public class RefusedRequirement {
         this.price = price;
     }
 
-    public TransactionType getTransactionType() { return transactionType; }
+    public TransactionType getTransactionType() {
+        return transactionType;
+    }
 
-    public ProductType getProductType() { return productType; }
+    public ProductType getProductType() {
+        return productType;
+    }
 
-    public String getProductName() { return productName; }
+    public String getProductName() {
+        return productName;
+    }
 
-    public MonetaryAmount getPrice() { return price; }
+    public MonetaryAmount getPrice() {
+        return price;
+    }
 
     @Override
     public String toString() {

src/main/java/cz/cvut/fel/sit/omo/foodchain/operation/Action.java

@@ -7,7 +7,7 @@ import cz.cvut.fel.sit.omo.foodchain.reporting.ReportTextVisitor;
 import java.util.logging.Level;
 
 /**
- * Operation for processing products in storage
+ * Operation for processing products in storage.
  */
 public class Action extends OperationBase {
     private final Product product;
@@ -35,6 +35,7 @@ public class Action extends OperationBase {
 
     /**
      * Changes actions duration or ends action.
+     *
      * @return action is in progress
      */
     public boolean tick() {

src/main/java/cz/cvut/fel/sit/omo/foodchain/operation/FinancialTransaction.java

@@ -8,7 +8,7 @@ import javax.naming.InsufficientResourcesException;
 import java.util.logging.Level;
 
 /**
- * Operation for transporting money
+ * Operation for transporting money.
  */
 public class FinancialTransaction extends Transaction {
 

src/main/java/cz/cvut/fel/sit/omo/foodchain/operation/OperationBase.java

@@ -7,17 +7,16 @@ import java.time.LocalDateTime;
 import java.util.logging.Logger;
 
 /**
- * Base class for all operations
+ * Base class for all operations.
  */
 public abstract class OperationBase {
 
     protected static final Logger LOGGER = Logger.getLogger(OperationBase.class.getName());
 
     private final LocalDateTime timeStart;
-    private LocalDateTime timeEnd;
-
     private final NodeBase nodeCreator;
     private final OperationBase lastOperation;
+    private LocalDateTime timeEnd;
 
     OperationBase(NodeBase node, OperationBase lastOperation) {
         nodeCreator = node;
@@ -45,7 +44,7 @@ public abstract class OperationBase {
         return lastOperation;
     }
 
-    public String accept(ReportTextVisitor reportVisitor){
+    public String accept(ReportTextVisitor reportVisitor) {
         return reportVisitor.visit(this);
     }
 }

src/main/java/cz/cvut/fel/sit/omo/foodchain/operation/ProductOperationType.java

@@ -4,10 +4,9 @@ import cz.cvut.fel.sit.omo.foodchain.node.NodeType;
 import cz.cvut.fel.sit.omo.foodchain.product.ProductType;
 
 /**
- * Enum class for product operations types with parameters
+ * Enum class for product operations types with parameters.
  */
-public enum ProductOperationType
+public enum ProductOperationType {
-{
     STORE_MEAT(NodeType.All, ProductType.MEAT, 3, -8),
     STORE_FRUIT(NodeType.All, ProductType.FRUIT, 3, 2),
     STORE_VEGETABLE(NodeType.All, ProductType.VEGETABLE, 3, 2),
@@ -30,28 +29,26 @@ public enum ProductOperationType
     private final int duration;
     private final int temperature;
 
-    ProductOperationType(NodeType node, ProductType product, int duration, int temperature)
+    ProductOperationType(NodeType node, ProductType product, int duration, int temperature) {
-    {
         this.node = node;
         this.productType = product;
         this.duration = duration;
         this.temperature = temperature;
     }
 
-    public int getDuration()
+    public int getDuration() {
-    {
         return duration;
     }
 
-    public int getTemperature()
+    public int getTemperature() {
-    {
         return temperature;
     }
 
-    public NodeType getNode()
+    public NodeType getNode() {
-    {
         return node;
     }
 
-    public ProductType getProductType() { return productType; }
+    public ProductType getProductType() {
+        return productType;
+    }
 }

src/main/java/cz/cvut/fel/sit/omo/foodchain/operation/ProductTransaction.java

@@ -9,7 +9,7 @@ import javax.naming.InsufficientResourcesException;
 import java.util.logging.Level;
 
 /**
- * Operation for transporting products
+ * Operation for transporting products.
  */
 public class ProductTransaction extends Transaction {
 
@@ -20,7 +20,8 @@ public class ProductTransaction extends Transaction {
         super(creator, receiver, transactionType, product.getCurrentOperation());
         this.product = product;
         type = null;
-        if (product == null || product.getProductState() != ProductState.IN_REQUIREMENT) throw new InsufficientResourcesException(creator.getClass().getSimpleName() + " tried to sell unavailable product " + product.getName() + " to " + receiver.getClass().getSimpleName());
+        if (product == null || product.getProductState() != ProductState.IN_REQUIREMENT)
+            throw new InsufficientResourcesException(creator.getClass().getSimpleName() + " tried to sell unavailable product " + product.getName() + " to " + receiver.getClass().getSimpleName());
         product.setCurrentOperation(this);
         product.setStateToReadyForDispatch();
         creator.getStorage().removeProduct(product);
@@ -50,8 +51,8 @@ public class ProductTransaction extends Transaction {
     public String toString() {
         return "ProductTransaction{" +
                 "product=" + product.getName() +
-                ", creator="+this.getNodeCreator().getNodeType() +
+                ", creator=" + this.getNodeCreator().getNodeType() +
-                ", receiver="+this.getNodeReceiver().getNodeType() + "}";
+                ", receiver=" + this.getNodeReceiver().getNodeType() + "}";
     }
 
     @Override

src/main/java/cz/cvut/fel/sit/omo/foodchain/operation/Transaction.java

@@ -6,7 +6,7 @@ import cz.cvut.fel.sit.omo.foodchain.signature.Signature;
 import cz.cvut.fel.sit.omo.foodchain.signature.SignatureManager;
 
 /**
- * Operation for transporting things between nodes
+ * Operation for transporting things between nodes.
  */
 public abstract class Transaction extends OperationBase {
 

src/main/java/cz/cvut/fel/sit/omo/foodchain/operation/TransactionType.java

@@ -1,7 +1,7 @@
 package cz.cvut.fel.sit.omo.foodchain.operation;
 
 /**
- * Enum class for transaction types
+ * Enum class for transaction types.
  */
 public enum TransactionType {
 

src/main/java/cz/cvut/fel/sit/omo/foodchain/parser/ConfigurationParser.java

@@ -12,7 +12,7 @@ import java.io.File;
 import java.io.IOException;
 
 /**
- * Parser for XML configuration
+ * Parser for XML configuration.
  */
 public class ConfigurationParser {
 
@@ -20,10 +20,11 @@ public class ConfigurationParser {
 
     /**
      * Parses xml file to document.
+     *
      * @param name file name
      * @throws ParserConfigurationException ParserConfigurationException
-     * @throws IOException IOException
+     * @throws IOException                  IOException
-     * @throws SAXException SAXException
+     * @throws SAXException                 SAXException
      */
     public static void parseDocument(String name) throws ParserConfigurationException, IOException, SAXException {
         DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
@@ -36,6 +37,7 @@ public class ConfigurationParser {
 
     /**
      * Returns parsed result with all elements having provided tag.
+     *
      * @param tag element tag
      * @return parsed result element
      */
@@ -49,9 +51,9 @@ public class ConfigurationParser {
                 element
                         .addAttribute(
                                 tmpNode
-                        .getAttributes()
+                                        .getAttributes()
-                                .item(j)
+                                        .item(j)
-                                .getNodeName(),
+                                        .getNodeName(),
                                 tmpNode
                                         .getAttributes()
                                         .item(j)

src/main/java/cz/cvut/fel/sit/omo/foodchain/parser/ParserResult.java

@@ -4,7 +4,7 @@ import java.util.LinkedList;
 import java.util.List;
 
 /**
- * Wrapper class for parser result elements
+ * Wrapper class for parser result elements.
  */
 public class ParserResult {
 
@@ -16,6 +16,7 @@ public class ParserResult {
 
     /**
      * Adds element to list.
+     *
      * @param element element
      */
     public void addElement(ParserResultElement element) {

src/main/java/cz/cvut/fel/sit/omo/foodchain/parser/ParserResultElement.java

@@ -4,7 +4,7 @@ import java.util.HashMap;
 import java.util.Map;
 
 /**
- * Class for storing all information given in a xml tag
+ * Class for storing all information given in a xml tag.
  */
 public class ParserResultElement {
 

src/main/java/cz/cvut/fel/sit/omo/foodchain/pool/ChannelPool.java

@@ -4,12 +4,13 @@ import cz.cvut.fel.sit.omo.foodchain.channel.ChannelBase;
 import cz.cvut.fel.sit.omo.foodchain.product.ProductType;
 
 /**
- * Pool for storing all channels
+ * Pool for storing all channels.
  */
 public class ChannelPool extends PoolListBase<ChannelBase> {
 
     /**
      * Finds channel by its type.
+     *
      * @param type type of channel
      * @return channel
      */

src/main/java/cz/cvut/fel/sit/omo/foodchain/pool/NodePool.java

@@ -3,7 +3,7 @@ package cz.cvut.fel.sit.omo.foodchain.pool;
 import cz.cvut.fel.sit.omo.foodchain.node.NodeBase;
 
 /**
- *Pool for storing all nodes
+ * Pool for storing all nodes.
  */
 public class NodePool extends PoolListBase<NodeBase> {
 }

src/main/java/cz/cvut/fel/sit/omo/foodchain/pool/PoolDatabase.java

@@ -5,7 +5,7 @@ import cz.cvut.fel.sit.omo.foodchain.util.Singleton;
 import java.lang.reflect.InvocationTargetException;
 
 /**
- * Database class for storing all pools
+ * Database class for storing all pools.
  */
 public class PoolDatabase {
 

src/main/java/cz/cvut/fel/sit/omo/foodchain/pool/PoolListBase.java

@@ -4,7 +4,8 @@ import java.util.LinkedList;
 import java.util.List;
 
 /**
- * Base class for all pools
+ * Base class for all pools.
+ *
  * @param <T> pool type
  */
 public abstract class PoolListBase<T> {

src/main/java/cz/cvut/fel/sit/omo/foodchain/pool/ProductPool.java

@@ -3,7 +3,7 @@ package cz.cvut.fel.sit.omo.foodchain.pool;
 import cz.cvut.fel.sit.omo.foodchain.product.Product;
 
 /**
- * Pool for storing all products
+ * Pool for storing all products.
  */
 public class ProductPool extends PoolListBase<Product> {
 }

src/main/java/cz/cvut/fel/sit/omo/foodchain/pool/ScenarioPool.java

@@ -3,7 +3,7 @@ package cz.cvut.fel.sit.omo.foodchain.pool;
 import cz.cvut.fel.sit.omo.foodchain.scenario.Scenario;
 
 /**
- * Pool for storing all scenarios
+ * Pool for storing all scenarios.
  */
 public class ScenarioPool extends PoolListBase<Scenario> {
 }

src/main/java/cz/cvut/fel/sit/omo/foodchain/product/Product.java

@@ -11,36 +11,33 @@ import java.util.LinkedList;
 import java.util.List;
 
 /**
- * Product class
+ * Product class.
  */
-public class Product
+public class Product {
-{
+    private final MonetaryAmount startPrice;
     private ProductState productState;
     private ProductType productType;
     private OperationBase currentOperation;
     private MonetaryAmount price;
-    private final MonetaryAmount startPrice;
-
     private String name;
 
-    public Product(String name, ProductType productType, double m)
+    public Product(String name, ProductType productType, double m) {
-    {
         this.name = name;
-        this.productType =  productType;
+        this.productType = productType;
         this.productState = ProductState.AVAILABLE;
         this.price = Money.of(m, "USD");
         this.startPrice = Money.of(m, "USD");
     }
 
     /**
-     * Passes tick onto current operation
+     * Passes tick onto current operation.
+     *
      * @return operation is active
      */
     public boolean tick() {
         try {
             return ((Action) currentOperation).tick();
-        }
+        } catch (Exception e) {
-        catch (Exception e) {
             return false;
         }
     }
@@ -50,8 +47,7 @@ public class Product
     /**
      * Set current product state to AVAILABLE. Throws IllegalStateException if the product is not IN_ACTION, READY_FOR_RECEPTION or IN_REQUIREMENT.
      */
-    public void setStateToAvailable()
+    public void setStateToAvailable() {
-    {
         if (this.productState.equals(ProductState.IN_ACTION) ||
                 this.productState.equals(ProductState.READY_FOR_RECEPTION) ||
                 this.productState.equals(ProductState.IN_REQUIREMENT))
@@ -63,9 +59,8 @@ public class Product
     /**
      * Set current product state to READY_FOR_DISPATCH. Throws IllegalStateException if the product is not IN_REQUIREMENT.
      */
-    public void setStateToReadyForDispatch()
+    public void setStateToReadyForDispatch() {
-    {
+        if (this.productState.equals(ProductState.IN_REQUIREMENT))
-        if(this.productState.equals(ProductState.IN_REQUIREMENT))
             this.productState = ProductState.READY_FOR_DISPATCH;
         else
             throw new IllegalStateException("Cannot set state READY_FOR_DISPATCH. Product is not IN_REQUIREMENT!");
@@ -74,9 +69,8 @@ public class Product
     /**
      * Set current product state to IN_TRANSIT. Throws IllegalStateException if the product is not READY_FOR_DISPATCH.
      */
-    public void setStateToInTransit()
+    public void setStateToInTransit() {
-    {
+        if (this.productState.equals(ProductState.READY_FOR_DISPATCH))
-        if(this.productState.equals(ProductState.READY_FOR_DISPATCH))
             this.productState = ProductState.IN_TRANSIT;
         else
             throw new IllegalStateException("Cannot set state IN_TRANSIT. Product is not READY_FOR_DISPATCH!");
@@ -85,9 +79,8 @@ public class Product
     /**
      * Set current product state to READY_FOR_RECEPTION. Throws IllegalStateException if the product is not READY_FOR_RECEPTION.
      */
-    public void setStateToReadyForReception()
+    public void setStateToReadyForReception() {
-    {
+        if (this.productState.equals(ProductState.IN_TRANSIT))
-        if(this.productState.equals(ProductState.IN_TRANSIT))
             this.productState = ProductState.READY_FOR_RECEPTION;
         else
             throw new IllegalStateException("Cannot set state READY_FOR_RECEPTION. Product has not been in transit!");
@@ -96,9 +89,8 @@ public class Product
     /**
      * Set current product state to IN_ACTION. Throws IllegalStateException if the product is not AVAILABLE.
      */
-    public void setStateToInAction()
+    public void setStateToInAction() {
-    {
+        if (this.productState.equals(ProductState.AVAILABLE))
-        if(this.productState.equals(ProductState.AVAILABLE))
             this.productState = ProductState.IN_ACTION;
         else
             throw new IllegalStateException("Cannot set state IN_ACTION. Product is not AVAILABLE!");
@@ -107,9 +99,8 @@ public class Product
     /**
      * Set current product state to IN_REQUIREMENT. Throws IllegalStateException if the product is not AVAILABLE.
      */
-    public void setStateToInRequirement()
+    public void setStateToInRequirement() {
-    {
+        if (this.productState.equals(ProductState.AVAILABLE))
-        if(this.productState.equals(ProductState.AVAILABLE))
             this.productState = ProductState.IN_REQUIREMENT;
         else
             throw new IllegalStateException("Cannot set state IN_REQUIREMENT. Product is not AVAILABLE!");
@@ -117,48 +108,47 @@ public class Product
 
     //Getters & Setters
 
-    public ProductState getProductState()
+    public ProductState getProductState() {
-    {
         return productState;
     }
 
-    public ProductType getProductType()
+    public ProductType getProductType() {
-    {
         return productType;
     }
 
-    public void setProductType(ProductType productType)
+    public void setProductType(ProductType productType) {
-    {
         this.productType = productType;
     }
 
-    public String getName()
+    public String getName() {
-    {
         return name;
     }
 
-    public void setName(String name)
+    public void setName(String name) {
-    {
         this.name = name;
     }
 
-    public OperationBase getCurrentOperation()
+    public OperationBase getCurrentOperation() {
-    {
         return currentOperation;
     }
 
-    public void setCurrentOperation(OperationBase currentOperation)
+    public void setCurrentOperation(OperationBase currentOperation) {
-    {
         this.currentOperation = currentOperation;
     }
 
-    public MonetaryAmount getPrice() { return price; }
+    public MonetaryAmount getPrice() {
+        return price;
+    }
 
-    public void setPrice(MonetaryAmount price) { this.price = price; }
+    public void setPrice(MonetaryAmount price) {
+        this.price = price;
+    }
 
-    public MonetaryAmount getStartPrice() { return startPrice; }
+    public MonetaryAmount getStartPrice() {
+        return startPrice;
+    }
 
-    public List<OperationBase> getListOfOperations(){
+    public List<OperationBase> getListOfOperations() {
         OperationBase operation = this.getCurrentOperation();
         List<OperationBase> operations = new LinkedList<>();
 
@@ -171,7 +161,7 @@ public class Product
         return operations;
     }
 
-    public String accept(ReportTextVisitor visitor){
+    public String accept(ReportTextVisitor visitor) {
         return visitor.visit(this);
     }
 }

src/main/java/cz/cvut/fel/sit/omo/foodchain/product/ProductState.java

@@ -1,9 +1,8 @@
 package cz.cvut.fel.sit.omo.foodchain.product;
 
 /**
- * Enum class for product states
+ * Enum class for product states.
  */
-public enum ProductState
+public enum ProductState {
-{
     AVAILABLE, READY_FOR_DISPATCH, IN_TRANSIT, READY_FOR_RECEPTION, IN_ACTION, IN_REQUIREMENT
 }

src/main/java/cz/cvut/fel/sit/omo/foodchain/product/ProductType.java

@@ -1,9 +1,8 @@
 package cz.cvut.fel.sit.omo.foodchain.product;
 
 /**
- * Enum class for product types
+ * Enum class for product types.
  */
-public enum ProductType
+public enum ProductType {
-{
     MEAT, FRUIT, VEGETABLE, OTHER, ALL // ALL is used only for actions
 }

src/main/java/cz/cvut/fel/sit/omo/foodchain/reporting/ReportTextVisitor.java

@@ -10,42 +10,47 @@ import cz.cvut.fel.sit.omo.foodchain.pool.PoolDatabase;
 import cz.cvut.fel.sit.omo.foodchain.product.Product;
 
 /**
- * Report visitor class for generating reports
+ * Report visitor class for generating reports.
  */
 public interface ReportTextVisitor {
     String ln = System.lineSeparator();
     PoolDatabase db = FoodChain.getFactoryManager().getPoolDatabaseInstance();
 
     /**
-     * Checks node and generate report based on information in node
+     * Checks node and generate report based on information in node.
+     *
      * @param node Node to generate report
      * @return Report in String
      */
     String visit(NodeBase node);
 
     /**
-     * Checks product and generate report based on information in product
+     * Checks product and generate report based on information in product.
+     *
      * @param product Product to generate report
      * @return Report in String
      */
     String visit(Product product);
 
     /**
-     * Checks product transaction and generate report based on information in transaction
+     * Checks product transaction and generate report based on information in transaction.
+     *
      * @param transaction Transaction to generate report
      * @return Report in String
      */
     String visit(ProductTransaction transaction);
 
     /**
-     * Checks action and generate report based on information in action
+     * Checks action and generate report based on information in action.
+     *
      * @param action Action to generate report
      * @return Report in String
      */
     String visit(Action action);
 
     /**
-     * Casts OperationBase to useful type to report
+     * Casts OperationBase to useful type to report.
+     *
      * @param operationBase Base of Action or Transaction
      * @return Report in String
      */
@@ -58,7 +63,8 @@ public interface ReportTextVisitor {
     }
 
     /**
-     * Casts Transaction to useful type to report
+     * Casts Transaction to useful type to report.
+     *
      * @param transaction Base of produc or financial t transaction
      * @return Report in String
      */

src/main/java/cz/cvut/fel/sit/omo/foodchain/reporting/ReportingManager.java

@@ -11,6 +11,7 @@ public class ReportingManager {
 
     /**
      * Create new file (or overwrite existing) in this pathname
+     *
      * @param pathname Relative pathname of File
      */
     public void createFileTextReport(String pathname) {
@@ -26,9 +27,10 @@ public class ReportingManager {
 
     /**
      * Configure reports and their order in String
+     *
      * @return Report string with all reports
      */
-    public String generateReport(){
+    public String generateReport() {
         ReportBuilder reportBuilder = new ReportBuilder();
 
         return reportBuilder

src/main/java/cz/cvut/fel/sit/omo/foodchain/reporting/SecurityReportVisitor.java

@@ -36,6 +36,8 @@ public class SecurityReportVisitor implements ReportTextVisitor {
     }
 
     @Override
-    public String visit(Action action) { return null; }
+    public String visit(Action action) {
+        return null;
+    }
 
 }

src/main/java/cz/cvut/fel/sit/omo/foodchain/requirement/Requirement.java

@@ -10,19 +10,18 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 /**
- * Requirement class
+ * Requirement class.
  */
 public class Requirement {
     private static final Logger LOGGER = Logger.getLogger(Ticker.class.getName());
-
+    private static int counter;
     private final NodeBase creator;
     private final TransactionType transactionType;
     private final ProductType productType;
     private final String productName;
     private final MonetaryAmount price;
     private int TTL;
-    private static int counter;
+    private final int id;
-    private int id;
 
     public Requirement(NodeBase creator, TransactionType transactionType, ProductType productType, String productName, MonetaryAmount price) {
         this.creator = creator;
@@ -60,7 +59,9 @@ public class Requirement {
         return productName;
     }
 
-    public MonetaryAmount getPrice() { return price; }
+    public MonetaryAmount getPrice() {
+        return price;
+    }
 
     public int getTTL() {
         return TTL;

src/main/java/cz/cvut/fel/sit/omo/foodchain/scenario/ConsumeProductStep.java

@@ -3,7 +3,7 @@ package cz.cvut.fel.sit.omo.foodchain.scenario;
 import cz.cvut.fel.sit.omo.foodchain.node.Customer;
 
 /**
- * Step for consuming random product from storage
+ * Step for consuming random product from storage.
  */
 public class ConsumeProductStep extends ScenarioStep {
 

src/main/java/cz/cvut/fel/sit/omo/foodchain/scenario/DoActionStep.java

@@ -7,20 +7,20 @@ import javax.naming.InsufficientResourcesException;
 import java.util.logging.Level;
 
 /**
- * Step for starting action on product(s)
+ * Step for starting action on product(s).
  */
 public class DoActionStep extends ScenarioStep {
     private final NodeBase nodeBase;
     private final ProductOperationType productOperationType;
     private final String productName;
 
-    public DoActionStep(NodeBase node, ProductOperationType productOperationType, String name){
+    public DoActionStep(NodeBase node, ProductOperationType productOperationType, String name) {
         this.nodeBase = node;
         this.productOperationType = productOperationType;
         this.productName = name;
     }
 
-    public DoActionStep(NodeBase node, ProductOperationType productOperationType){
+    public DoActionStep(NodeBase node, ProductOperationType productOperationType) {
         this(node, productOperationType, null);
     }
 
@@ -33,12 +33,10 @@ public class DoActionStep extends ScenarioStep {
         try {
             if (productName != null) {
                 nodeBase.doAction(productOperationType, productName);
-            }
+            } else {
-            else {
                 nodeBase.doAction(productOperationType);
             }
-        }
+        } catch (IllegalCallerException | InsufficientResourcesException e) {
-        catch (IllegalCallerException | InsufficientResourcesException e) {
             LOGGER.log(Level.SEVERE, e.getMessage());
         }
     }

src/main/java/cz/cvut/fel/sit/omo/foodchain/scenario/GenerateProductStep.java

@@ -7,21 +7,20 @@ import cz.cvut.fel.sit.omo.foodchain.product.Product;
 import java.util.logging.Level;
 
 /**
- * Step for generating product from pool
+ * Step for generating product from pool.
  */
 public class GenerateProductStep extends ScenarioStep {
 
+    private static int counter = 0;
     private final Farmer node;
     private final Product product;
-    private static int counter = 0;
 
     public GenerateProductStep(Farmer node) {
         this.node = node;
         if (counter < FoodChain.getFactoryManager().getPoolDatabaseInstance().getProductPoolInstance().findAll().size()) {
             product = FoodChain.getFactoryManager().getPoolDatabaseInstance().getProductPoolInstance().findAll().get(counter);
             counter++;
-        }
+        } else {
-        else {
             product = null;
             LOGGER.log(Level.SEVERE, "Insufficient products in pool");
         }

src/main/java/cz/cvut/fel/sit/omo/foodchain/scenario/PassStep.java

@@ -1,7 +1,7 @@
 package cz.cvut.fel.sit.omo.foodchain.scenario;
 
 /**
- * Step for skipping
+ * Step for skipping.
  */
 public class PassStep extends ScenarioStep {
 
@@ -9,5 +9,6 @@ public class PassStep extends ScenarioStep {
      * Does nothing.
      */
     @Override
-    void execute() {}
+    void execute() {
+    }
 }

src/main/java/cz/cvut/fel/sit/omo/foodchain/scenario/Scenario.java

@@ -4,7 +4,7 @@ import java.util.Iterator;
 import java.util.List;
 
 /**
- * Scenatio class fpr holding and executing steps
+ * Scenatio class fpr holding and executing steps.
  */
 public class Scenario {
     List<ScenarioStep> steps;
@@ -17,6 +17,7 @@ public class Scenario {
 
     /**
      * Executes next step.
+     *
      * @return scenario has steps
      */
     boolean execute() {
@@ -29,6 +30,7 @@ public class Scenario {
 
     /**
      * Executes next step.
+     *
      * @return scenario has steps
      */
     public boolean tick() {

src/main/java/cz/cvut/fel/sit/omo/foodchain/scenario/ScenarioStep.java

@@ -3,7 +3,7 @@ package cz.cvut.fel.sit.omo.foodchain.scenario;
 import java.util.logging.Logger;
 
 /**
- * Scenario step class
+ * Scenario step class.
  */
 public abstract class ScenarioStep {
     protected static final Logger LOGGER = Logger.getLogger(ScenarioStep.class.getName());

src/main/java/cz/cvut/fel/sit/omo/foodchain/scenario/SendRequirementStep.java

@@ -10,14 +10,14 @@ import javax.naming.InsufficientResourcesException;
 import java.util.logging.Level;
 
 /**
- * Step for sending requirements
+ * Step for sending requirements.
  */
 public class SendRequirementStep extends ScenarioStep {
     private final NodeBase node;
     private final TransactionType tType;
     private final ProductType pType;
     private final String pName;
-    private MonetaryAmount pPrice;
+    private final MonetaryAmount pPrice;
 
     // sell
     public SendRequirementStep(NodeBase node, TransactionType tType, ProductType pType, String pName) {

src/main/java/cz/cvut/fel/sit/omo/foodchain/signature/Signature.java

@@ -6,7 +6,7 @@ import java.time.LocalDateTime;
 import java.util.UUID;
 
 /**
- * Signature class validating its transaction
+ * Signature class validating its transaction.
  */
 public class Signature {
 

src/main/java/cz/cvut/fel/sit/omo/foodchain/signature/SignatureManager.java

@@ -3,7 +3,7 @@ package cz.cvut.fel.sit.omo.foodchain.signature;
 import cz.cvut.fel.sit.omo.foodchain.operation.Transaction;
 
 /**
- * Manager class for creating and validating signatures
+ * Manager class for creating and validating signatures.
  */
 public class SignatureManager {
 
@@ -11,6 +11,7 @@ public class SignatureManager {
 
     /**
      * Creates signature for transaction.
+     *
      * @param transaction transaction
      * @return signature
      */
@@ -20,6 +21,7 @@ public class SignatureManager {
 
     /**
      * Check if signature corresponds with its transaction.
+     *
      * @param transaction transaction
      * @return signature corresponds with its transaction
      */

src/main/java/cz/cvut/fel/sit/omo/foodchain/util/ChannelObserver.java

@@ -4,7 +4,7 @@ import cz.cvut.fel.sit.omo.foodchain.channel.ChannelBase;
 import cz.cvut.fel.sit.omo.foodchain.requirement.Requirement;
 
 /**
- * Interface for nodes that receives requirements
+ * Interface for nodes that receives requirements.
  */
 public interface ChannelObserver {
     void update(Requirement requirement, ChannelBase channel);

src/main/java/cz/cvut/fel/sit/omo/foodchain/util/Observable.java

@@ -1,10 +1,12 @@
 package cz.cvut.fel.sit.omo.foodchain.util;
 
 /**
- * Interface for channels to work with observers
+ * Interface for channels to work with observers.
  */
 public interface Observable {
     void attach(ChannelObserver channelObserver);
+
     void detach(ChannelObserver channelObserver);
+
     void notifyAllObservers();
 }

src/main/java/cz/cvut/fel/sit/omo/foodchain/util/ReportLogger.java

@@ -7,29 +7,31 @@ import java.util.logging.Level;
 import java.util.logging.LogRecord;
 
 /**
- * Custom Logger used for TransactionReport
+ * Custom Logger used for TransactionReport.
  */
-public class ReportLogger extends Handler
+public class ReportLogger extends Handler {
-{
     private static final StringBuilder sb = new StringBuilder();
 
+    public static StringBuilder getSb() {
+        return sb;
+    }
+
     /**
      * Logs message and prints it out.
+     *
      * @param record message to be printed
      */
     @Override
     public void publish(LogRecord record) {
         // Blocking Money logs because spams "Using default formatter toString()." after printing MonetaryAmount in reports
-        if(record.getSourceClassName().equals(Money.class.getName()) || record.getMessage().contains("MathContext"))return;
+        if (record.getSourceClassName().equals(Money.class.getName()) || record.getMessage().contains("MathContext"))
+            return;
 
         sb.append(record.getMessage()).append(System.lineSeparator());
 
-        if(record.getLevel().equals(Level.WARNING) || record.getLevel().equals(Level.SEVERE))
+        if (record.getLevel().equals(Level.WARNING) || record.getLevel().equals(Level.SEVERE)) {
-        {
             System.err.println(record.getMessage());
-        }
+        } else {
-        else
-        {
             System.out.println(record.getMessage());
         }
     }
@@ -41,8 +43,4 @@ public class ReportLogger extends Handler
     @Override
     public void close() throws SecurityException {
     }
-
-    public static StringBuilder getSb() {
-        return sb;
-    }
 }

src/main/java/cz/cvut/fel/sit/omo/foodchain/util/Singleton.java

@@ -6,7 +6,7 @@ import java.util.HashMap;
 import java.util.Map;
 
 /**
- * Singleton helper class
+ * Singleton helper class.
  */
 public class Singleton {
 

src/main/java/cz/cvut/fel/sit/omo/foodchain/util/Ticker.java

@@ -12,7 +12,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 /**
- * Creates artificial time for application
+ * Creates artificial time for application.
  */
 public class Ticker {
     protected static final Logger LOGGER = Logger.getLogger(Ticker.class.getName());
@@ -43,5 +43,7 @@ public class Ticker {
         timer.stop();
     }
 
-    public static Timer getTimer() { return timer; }
+    public static Timer getTimer() {
+        return timer;
+    }
 }