PrototypeService: Sub-categories made unique

The sub-categories for prototypes were not forced to be unique. Hence,
every update of the prototypes created redundant copies which polluted
the model element view and ultimately slowed down the UI.

Issue-ref: 4349
Issue-URL: af3#4349



Signed-off-by: Andreas Bayha <bayha@fortiss.org>

org.fortiss.tooling.kernel/src/org/fortiss/tooling/kernel/extension/data/.ratings

@@ -8,7 +8,7 @@ LogMessage.java 14204ed9d51b356f50be52362247cfbbe0cbd5c7 GREEN
 ModelElementTransformationContext.java 5a41bd3a75ce434c3174d50d2fdfab28b66f09f2 GREEN
 ModelStorageError.java 2aef480044047e960e64811111a7f27310011cc2 GREEN
 Prototype.java f4b13f86b7511edacc138053ffb80cecbac70868 GREEN
-PrototypeCategory.java ca500b4816ed42b9536488669aeab89561d2f08c GREEN
+PrototypeCategory.java 46dd77d2481862c622e463a89cd3aae6bd3f2971 YELLOW
 TransformationProviderChain.java 67ec6d0b4c23d295323572649606d79f3b897437 GREEN
 TutorialAtomicStep.java 09c0d6597d542b431b5bbdc790ee9e533d9f77fb GREEN
 TutorialCompositeStep.java cc61c2e86eff310762acac4d023fd709507355c8 GREEN

org.fortiss.tooling.kernel/src/org/fortiss/tooling/kernel/extension/data/PrototypeCategory.java

@@ -16,7 +16,9 @@
 package org.fortiss.tooling.kernel.extension.data;
 
 import java.util.ArrayList;
+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 
 /**
  * Container object for prototypes of a certain category.
@@ -37,8 +39,8 @@ public class PrototypeCategory {
 	/** Stores the prototypes affiliated with this category. */
 	private List<Prototype> children = new ArrayList<Prototype>();
 
-	/** Stores the sub-categories of this category. */
-	private List<PrototypeCategory> subCategories = new ArrayList<PrototypeCategory>();
+	/** Stores the mapping of sub-category names to sub-categories for this category. */
+	private Map<String, PrototypeCategory> subCategories = new HashMap<String, PrototypeCategory>();
 
 	/** Constructor. */
 	public PrototypeCategory(String category) {
@@ -61,9 +63,15 @@ public class PrototypeCategory {
 		children.add(prototype);
 	}
 
-	/** Adds sub-category. */
+	/**
+	 * Adds the given sub-category to this category. In case a sub-category of the same name already
+	 * exists, it will be replaced.
+	 * 
+	 * @param subCat
+	 *            The sub-{@link PrototypeCategory} to be added.
+	 */
 	public void add(PrototypeCategory subCat) {
-		subCategories.add(subCat);
+		subCategories.put(subCat.getName(), subCat);
 	}
 
 	/** Replaces an existing prototype with a new one. */
@@ -78,7 +86,7 @@ public class PrototypeCategory {
 	public Object[] getChildren() {
 		List<Object> result = new ArrayList<Object>();
 		result.addAll(children);
-		result.addAll(subCategories);
+		result.addAll(subCategories.values());
 		return result.toArray();
 	}