Checkpoint: added performExchange

buisnesslogic/src/main/java/com/plannaplan/entities/Assignment.java

@@ -68,6 +68,9 @@ public class Assignment {
     public Assignment() {
     }
 
+    public void setCommision(Commision commision) {
+	this.commision = commision;
+    }
     /**
      * Id getter
      *

buisnesslogic/src/main/java/com/plannaplan/entities/User.java

@@ -47,6 +47,11 @@ public class User {
         return this.studentRegisteredGrups;
     }
 
+    public void removeGroup(Long id) {
+	final Groups groupToDelete = this.studentRegisteredGrups.stream().filter(e -> e.getId().equals(id)).findFirst().get();
+	this.studentRegisteredGrups.remove(groupToDelete);
+    }
+
     public void claimGroup(Groups group) {
         if (this.studentRegisteredGrups == null) {
             this.studentRegisteredGrups = new HashSet<>();

buisnesslogic/src/main/java/com/plannaplan/models/MatchData.java

@@ -1,27 +1,36 @@
 package com.plannaplan.models;
 
 import com.plannaplan.entities.Assignment;
+import com.plannaplan.entities.Exchange;
 
 public class MatchData {
-    private Assignment assignmentOne;
+    private Exchange exchangeOne;
-    private Assignment assignmentTwo;
+    private Exchange exchangeTwo;
 
-    public MatchData(Assignment assignmentOne, Assignment assignmentTwo) {
+    public MatchData(Exchange exchangeOne, Exchange exchangeTwo) {
-	this.assignmentOne = assignmentOne;
+	this.exchangeOne = exchangeOne;
-	this.assignmentTwo = assignmentTwo;
+	this.exchangeTwo = exchangeTwo;
+    }
+
+    public Exchange getExchangeOne() {
+	return this.exchangeOne;
+    }
+
+    public Exchange getExchangeTwo() {
+	return this.exchangeTwo;
     }
 
     public Assignment getAssignmentTwo() {
-	return assignmentTwo;
+	return this.exchangeTwo.getOwnedAssignment();
     }
 
     public Assignment getAssignmentOne() {
-	return assignmentOne;
+	return this.exchangeOne.getOwnedAssignment();
     }
 
     @Override
     public int hashCode() {
-	return this.assignmentOne.hashCode() + this.assignmentTwo.hashCode();
+	return this.getAssignmentOne().hashCode() + this.getAssignmentTwo().hashCode();
     }
 
     @Override
@@ -44,6 +53,6 @@ public class MatchData {
 	MatchData c = (MatchData) o;
 
 	// Compare the data members and return accordingly
-	return (this.assignmentOne.equals(c.getAssignmentOne()) && this.assignmentTwo.equals(c.getAssignmentTwo())) || (this.assignmentOne.equals(c.getAssignmentTwo()) && this.assignmentTwo.equals(c.getAssignmentOne()));
+	return (this.getAssignmentOne().equals(c.getAssignmentOne()) && this.getAssignmentTwo().equals(c.getAssignmentTwo())) || (this.getAssignmentOne().equals(c.getAssignmentTwo()) && this.getAssignmentTwo().equals(c.getAssignmentOne()));
     }
 }

buisnesslogic/src/main/java/com/plannaplan/services/ExchangeService.java

@@ -1,5 +1,6 @@
 package com.plannaplan.services;
 
+import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Optional;
@@ -7,8 +8,10 @@ import java.util.Set;
 import java.util.stream.Collectors;
 
 import com.plannaplan.entities.Assignment;
+import com.plannaplan.entities.Commision;
 import com.plannaplan.entities.Exchange;
 import com.plannaplan.entities.Groups;
+import com.plannaplan.entities.User;
 import com.plannaplan.models.MatchData;
 import com.plannaplan.repositories.ExchangeRepository;
 
@@ -21,6 +24,12 @@ public class ExchangeService {
     @Autowired
     private ExchangeRepository repo;
 
+    @Autowired
+    private AssignmentService assignmentService;
+
+    @Autowired
+    private UserService userService;
+
     /**
      * @param exchange Instance to save in database
      * @return Exchange Instance contains database id
@@ -62,14 +71,47 @@ public class ExchangeService {
     }
 
     public void performExchange() {
+	final Set<MatchData> matchData = this.getMatches();
+	final List<Long> performedAssignmentExchanges = new ArrayList<>();
+	matchData.forEach( m -> {
+		final Assignment assignmentOne = m.getAssignmentOne();
+		final Assignment assignmentTwo = m.getAssignmentTwo();
 
+		if (!(performedAssignmentExchanges.contains(assignmentOne.getId()) || performedAssignmentExchanges.contains(assignmentTwo.getId()))){
+		    final Commision commisionOne = assignmentOne.getCommision();
+		    final User userOne = commisionOne.getCommisionOwner();
+		    final Commision commisionTwo = assignmentTwo.getCommision();
+		    final User userTwo = commisionTwo.getCommisionOwner();
+
+		    assignmentOne.setCommision(commisionTwo);
+		    assignmentTwo.setCommision(commisionOne);
+
+		    userOne.removeGroup(assignmentOne.getGroup().getId());
+		    userTwo.removeGroup(assignmentTwo.getGroup().getId());
+
+		    userOne.claimGroup(assignmentTwo.getGroup());
+		    userTwo.claimGroup(assignmentOne.getGroup());
+
+		    this.assignmentService.save(assignmentOne);
+		    this.assignmentService.save(assignmentTwo);
+
+		    this.userService.save(userOne);
+		    this.userService.save(userTwo);
+
+		    performedAssignmentExchanges.add(assignmentOne.getId());
+		    performedAssignmentExchanges.add(assignmentTwo.getId());
+		}
+
+		this.deleteExchange(m.getExchangeOne());
+		this.deleteExchange(m.getExchangeTwo());
+	    });
     }
 
    public Set<MatchData> getMatches(){
        final List<MatchData> matches = this.repo.getMatches().stream().map(m -> {
 	       final Exchange exchangeOne = (Exchange) m[0];
 	       final Exchange exchangeTwo = (Exchange) m[1];
-	       return new MatchData(exchangeOne.getOwnedAssignment(), exchangeTwo.getOwnedAssignment());
+	       return new MatchData(exchangeOne, exchangeTwo);
 	   }).collect(Collectors.toList());
 
        final Set<MatchData> filterMatches = new HashSet<>(matches);