1 files changed, 63 insertions, 0 deletions
diff --git a/branches/sca-java-integration/sca/kernel/core/src/main/java/org/apache/tuscany/core/component/scope/ScopeRegistryImpl.java b/branches/sca-java-integration/sca/kernel/core/src/main/java/org/apache/tuscany/core/component/scope/ScopeRegistryImpl.java
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+++ b/branches/sca-java-integration/sca/kernel/core/src/main/java/org/apache/tuscany/core/component/scope/ScopeRegistryImpl.java
@@ -0,0 +1,63 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+package org.apache.tuscany.core.component.scope;
+
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.apache.tuscany.spi.ObjectFactory;
+import org.apache.tuscany.spi.component.ScopeContainer;
+import org.apache.tuscany.spi.component.ScopeRegistry;
+import org.apache.tuscany.spi.model.Scope;
+
+/**
+ * The default implementation of a scope registry
+ *
+ * @version $Rev$ $Date$
+ */
+public class ScopeRegistryImpl implements ScopeRegistry {
+    private final Map<Scope, ScopeContainer> scopeCache =
+        new ConcurrentHashMap<Scope, ScopeContainer>();
+    private final Map<Scope, ObjectFactory<? extends ScopeContainer>> factoryCache =
+        new ConcurrentHashMap<Scope, ObjectFactory<? extends ScopeContainer>>();
+
+    public ScopeContainer getScopeContainer(Scope scope) {
+        assert Scope.COMPOSITE != scope;
+        ScopeContainer container = scopeCache.get(scope);
+        if (container == null) {
+            ObjectFactory<? extends ScopeContainer> factory = factoryCache.get(scope);
+            if (factory != null) {
+                container = factory.getInstance();
+                container.start();
+                scopeCache.put(scope, container);
+            }
+        }
+        return container;
+    }
+
+    public <T extends ScopeContainer> void registerFactory(Scope scope, ObjectFactory<T> factory) {
+        factoryCache.put(scope, factory);
+    }
+
+    public void deregisterFactory(Scope scope) {
+        factoryCache.remove(scope);
+    }
+
+
+}