Implements methods archive putInTrash restore - Fix #22

gtd-server-core/src/main/java/fr/alma/gtd/server/core/AbstractTask.java

@@ -167,18 +167,29 @@ public abstract class AbstractTask extends AbstractServerObject implements ITask
 	}
 	
 	@Override
-	public final void archive() {
-		//TODO
+	public final void archive() throws IllegalStateException {
+		if(this.isTrash) throw new IllegalStateException("cannot archive an trashed task");
+		if(this.isArchived) throw new IllegalStateException("cannot archive an archived task");
+
+		this.setArchived(true);
 	}
 	
 	@Override
-	public final void putInTrash() {
-		//TODO
+	public final void putInTrash() throws IllegalStateException {
+		if(this.getProjectContainer()==null) throw new IllegalStateException("cannot trash a not project related task");
+		if(this.isTrash()) throw new IllegalStateException("cannot trash a trashed task");
+
+		this.setTrash(true);
+		this.getProjectContainer().deleteTask(this);
 	}
 	
 	@Override
-	public final  void restore() {
-		//TODO
+	public final  void restore() throws IllegalStateException {
+		if(this.getProjectContainer()==null) throw new IllegalStateException("cannot restore a not project related task");
+		if(!this.isTrash()) throw new IllegalStateException("cannot restore a not trashed task");
+
+		this.setTrash(false);
+		this.getProjectContainer().addTask(this);
 	}
 
 	@Override