1 files changed, 75 insertions, 0 deletions
diff --git a/propertysheet/src/org/eclipse/wb/internal/core/utils/reflect/ClassMap.java b/propertysheet/src/org/eclipse/wb/internal/core/utils/reflect/ClassMap.java
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index 0000000..ce0d339
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+++ b/propertysheet/src/org/eclipse/wb/internal/core/utils/reflect/ClassMap.java
@@ -0,0 +1,75 @@
+/*******************************************************************************
+ * Copyright (c) 2011 Google, Inc.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Google, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.wb.internal.core.utils.reflect;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * {@link Map}-like interface for mapping {@link Class} to value.
+ * 
+ * @author scheglov_ke
+ * @coverage core.util
+ */
+public final class ClassMap<V> {
+  ////////////////////////////////////////////////////////////////////////////
+  //
+  // Constructor
+  //
+  ////////////////////////////////////////////////////////////////////////////
+  /**
+   * Creates new instance of {@link ClassMap}.
+   */
+  public static <V> ClassMap<V> create() {
+    return new ClassMap<V>();
+  }
+
+  ////////////////////////////////////////////////////////////////////////////
+  //
+  // Map
+  //
+  ////////////////////////////////////////////////////////////////////////////
+  public void put(Class<?> key, V value) {
+    getMap(key).put(key, value);
+  }
+
+  public V get(Class<?> key) {
+    return getMap(key).get(key);
+  }
+
+  public void remove(Class<?> key) {
+    getMap(key).remove(key);
+  }
+
+  public void clear(ClassLoader classLoader) {
+    getMap(classLoader).clear();
+  }
+
+  ////////////////////////////////////////////////////////////////////////////
+  //
+  // Implementation
+  //
+  ////////////////////////////////////////////////////////////////////////////
+  private Map<Class<?>, V> getMap(Class<?> key) {
+    ClassLoader classLoader = key.getClassLoader();
+    return getMap(classLoader);
+  }
+
+  @SuppressWarnings("unchecked")
+  private Map<Class<?>, V> getMap(ClassLoader classLoader) {
+    Object map = ClassLoaderLocalMap.get(classLoader, this);
+    if (map == null) {
+      map = new HashMap<Class<?>, V>();
+      ClassLoaderLocalMap.put(classLoader, this, map);
+    }
+    return (Map<Class<?>, V>) map;
+  }
+}