FELIX-4768 : [RFC190/212] Reference can specify both method and field
git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1653356 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/scr/src/main/java/org/apache/felix/scr/impl/helper/DuplexReferenceMethods.java b/scr/src/main/java/org/apache/felix/scr/impl/helper/DuplexReferenceMethods.java
new file mode 100644
index 0000000..fea2e60
--- /dev/null
+++ b/scr/src/main/java/org/apache/felix/scr/impl/helper/DuplexReferenceMethods.java
@@ -0,0 +1,120 @@
+/*
+ * 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.felix.scr.impl.helper;
+
+import org.apache.felix.scr.impl.manager.ComponentContextImpl;
+import org.apache.felix.scr.impl.manager.RefPair;
+import org.osgi.framework.BundleContext;
+
+public class DuplexReferenceMethods implements ReferenceMethods
+{
+ /** First is field methods. */
+ private final ReferenceMethods first;
+
+ /** Second is method methods. */
+ private final ReferenceMethods second;
+
+ public DuplexReferenceMethods(final ReferenceMethods first, final ReferenceMethods second)
+ {
+ this.first = first;
+ this.second = second;
+ }
+
+ public ReferenceMethod getBind()
+ {
+ return new DuplexReferenceMethod(first.getBind(), second.getBind());
+ }
+
+ public ReferenceMethod getUnbind()
+ {
+ return new DuplexReferenceMethod(first.getUnbind(), second.getUnbind());
+ }
+
+ public ReferenceMethod getUpdated()
+ {
+ return new DuplexReferenceMethod(first.getUpdated(), second.getUpdated());
+ }
+
+ public InitReferenceMethod getInit()
+ {
+ return new InitReferenceMethod()
+ {
+
+ public boolean init(Object componentInstance, SimpleLogger logger)
+ {
+ final InitReferenceMethod i1 = first.getInit();
+ if ( i1 != null )
+ {
+ if ( !i1.init(componentInstance, logger))
+ {
+ return false;
+ }
+ }
+ final InitReferenceMethod i2 = second.getInit();
+ if ( i2 != null )
+ {
+ if ( !i2.init(componentInstance, logger))
+ {
+ return false;
+ }
+ }
+ return true;
+ }
+ };
+ }
+
+ private static final class DuplexReferenceMethod implements ReferenceMethod
+ {
+
+ private final ReferenceMethod first;
+
+ private final ReferenceMethod second;
+
+ public DuplexReferenceMethod(final ReferenceMethod first, final ReferenceMethod second)
+ {
+ this.first = first;
+ this.second = second;
+ }
+
+ public MethodResult invoke(Object componentInstance,
+ BindParameters rawParameter,
+ MethodResult methodCallFailureResult, SimpleLogger logger)
+ {
+ if ( first.invoke(componentInstance, rawParameter, methodCallFailureResult, logger) != null )
+ {
+ return second.invoke(componentInstance, rawParameter, methodCallFailureResult, logger);
+ }
+ return null;
+ }
+
+ public <S, T> boolean getServiceObject(ComponentContextImpl<S> key,
+ RefPair<S, T> refPair, BundleContext context,
+ SimpleLogger logger)
+ {
+ // only if both return true, we return true
+ boolean result = first.getServiceObject(key, refPair, context, logger);
+ if ( result )
+ {
+ result = second.getServiceObject(key, refPair, context, logger);
+ }
+ return result;
+ }
+
+ }
+}