1 files changed, 88 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/1.6-TUSCANY-3909/assembly/src/main/java/org/apache/tuscany/sca/assembly/builder/impl/ServiceConfigurationUtil.java b/sca-java-1.x/tags/1.6-TUSCANY-3909/assembly/src/main/java/org/apache/tuscany/sca/assembly/builder/impl/ServiceConfigurationUtil.java
new file mode 100644
index 0000000000..41a8b3f8ba
--- /dev/null
+++ b/sca-java-1.x/tags/1.6-TUSCANY-3909/assembly/src/main/java/org/apache/tuscany/sca/assembly/builder/impl/ServiceConfigurationUtil.java
@@ -0,0 +1,88 @@
+/*
+ * 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.sca.assembly.builder.impl;
+
+import org.apache.tuscany.sca.assembly.Component;
+import org.apache.tuscany.sca.assembly.ComponentService;
+import org.apache.tuscany.sca.assembly.CompositeService;
+import org.apache.tuscany.sca.assembly.Service;
+
+/**
+ * This class encapsulates utility methods to deal with service definitions.
+ *
+ * @version $Rev$ $Date$
+ */
+abstract class ServiceConfigurationUtil {
+
+    /**
+     * Follow a service promotion chain down to the inner most (non composite)
+     * component service.
+     * 
+     * @param topCompositeService
+     * @return
+     */
+    static ComponentService getPromotedComponentService(CompositeService compositeService) {
+        ComponentService componentService = compositeService.getPromotedService();
+        if (componentService != null) {
+            Service service = componentService.getService();
+            if (componentService.getName() != null && service instanceof CompositeService) {
+    
+                // Continue to follow the service promotion chain
+                return getPromotedComponentService((CompositeService)service);
+    
+            } else {
+    
+                // Found a non-composite service
+                return componentService;
+            }
+        } else {
+    
+            // No promoted service
+            return null;
+        }
+    }
+
+    /**
+     * Follow a service promotion chain down to the innermost (non-composite) component.
+     * 
+     * @param compositeService
+     * @return
+     */
+    static Component getPromotedComponent(CompositeService compositeService) {
+        ComponentService componentService = compositeService.getPromotedService();
+        if (componentService != null) {
+            Service service = componentService.getService();
+            if (componentService.getName() != null && service instanceof CompositeService) {
+
+                // Continue to follow the service promotion chain
+                return getPromotedComponent((CompositeService)service);
+
+            } else {
+
+                // Found a non-composite service
+                return compositeService.getPromotedComponent();
+            }
+        } else {
+
+            // No promoted service
+            return null;
+        }
+    }
+
+}