1 files changed, 157 insertions, 0 deletions
diff --git a/plugins/org.eclipse.net4j.util.defs/src/org/eclipse/net4j/util/net4jutildefs/util/Net4jUtilDefsUtil.java b/plugins/org.eclipse.net4j.util.defs/src/org/eclipse/net4j/util/net4jutildefs/util/Net4jUtilDefsUtil.java
new file mode 100644
index 0000000000..24504fc3a9
--- /dev/null
+++ b/plugins/org.eclipse.net4j.util.defs/src/org/eclipse/net4j/util/net4jutildefs/util/Net4jUtilDefsUtil.java
@@ -0,0 +1,157 @@
+package org.eclipse.net4j.util.net4jutildefs.util;
+
+import java.util.Collection;
+import java.util.List;
+
+/**
+ * The Class Net4jUtilDefsUtil.
+ */
+public class Net4jUtilDefsUtil
+{
+
+  /**
+   * Are equal.
+   * 
+   * @param thisObject
+   *          the this object
+   * @param thatObject
+   *          the that object
+   * @return true, if successful
+   */
+  public static boolean areEqual(Object thisObject, Object thatObject)
+  {
+    boolean areEqual = false;
+    if (thisObject == null && thatObject == null)
+    {
+      areEqual = true;
+    }
+    else if (thisObject != null && thisObject != null)
+    {
+      areEqual = thisObject.equals(thatObject);
+    }
+    return areEqual;
+  }
+
+  /**
+   * Are equal.
+   * 
+   * @param thisList
+   *          the this list
+   * @param thatList
+   *          the that list
+   * @return true, if successful
+   */
+  public static boolean areEqual(List<?> thisList, List<?> thatList)
+  {
+    boolean areEqual = false;
+    if (thisList != null && thatList != null && thisList.size() == thatList.size())
+    {
+      for (int i = 0; i < thisList.size(); i++)
+      {
+        if (!areEqual(thisList.get(i), thatList.get(i)))
+        {
+          areEqual = false;
+          break;
+        }
+      }
+    }
+    return areEqual;
+  }
+
+  /**
+   * Do for all structural features.
+   * 
+   * @param visitor
+   *          the visitor
+   * @param structuralFeaturesList
+   *          the structural features list
+   */
+  public static <EStructuralFeature> void doForAllStructuralFeatures(IVisitor<EStructuralFeature> visitor,
+      Collection<EStructuralFeature> structuralFeatures)
+  {
+    new VisitorDelegator<EStructuralFeature>(structuralFeatures).visit(visitor);
+  }
+
+  /**
+   * The Class VisitorDelegator. It visits all members of a Collection
+   */
+  private static class VisitorDelegator<V>
+  {
+
+    /** The visited list. */
+    private Collection<V> visitedCollection;
+
+    /**
+     * Instantiates a new visitor delegator.
+     * 
+     * @param list
+     *          the list
+     */
+    private VisitorDelegator(Collection<V> collection)
+    {
+      this.visitedCollection = collection;
+    }
+
+    /**
+     * Visit a member.
+     * 
+     * @param visitor
+     *          the visitor
+     */
+    private void visit(IVisitor<V> visitor)
+    {
+      for (V visitedMember : visitedCollection)
+      {
+        visitor.visit(visitedMember);
+      }
+    }
+
+    /**
+     * Visit a member and break the visits if the current visitor returns <code>flase</code>.
+     * 
+     * @param visitor
+     *          the visitor
+     */
+    private void breakableVisit(IBreakingVisitor<V> visitor)
+    {
+      for (V visitedMember : visitedCollection)
+      {
+        if (!visitor.visit(visitedMember))
+        {
+          break;
+        }
+      }
+    }
+  }
+
+  /**
+   * The Interface IVisitor.
+   */
+  public interface IVisitor<V>
+  {
+
+    /**
+     * Visit.
+     * 
+     * @param visitedMember
+     *          the visited member
+     */
+    public void visit(V visitedMember);
+  }
+
+  /**
+   * The Interface IBreakingVisitor.
+   */
+  public interface IBreakingVisitor<V>
+  {
+
+    /**
+     * Visit.
+     * 
+     * @param visitedMember
+     *          the visited member
+     * @return true, if successful
+     */
+    public boolean visit(V visitedMember);
+  }
+}