Aspect sample with annotation
git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@907746 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/dependencymanager/samples/annotation/src/main/java/org/apache/felix/dm/samples/annotation/DictionaryAspect.java b/dependencymanager/samples/annotation/src/main/java/org/apache/felix/dm/samples/annotation/DictionaryAspect.java
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+/*
+ * 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.dm.samples.annotation;
+
+import org.apache.felix.dm.annotation.api.AspectService;
+import org.apache.felix.dm.annotation.api.Param;
+import org.apache.felix.dm.annotation.api.ServiceDependency;
+import org.osgi.framework.Constants;
+import org.osgi.service.log.LogService;
+
+/**
+ * This aspect wraps a Dictionary and checks the "aspect" word on behalf of it.
+ */
+@AspectService(
+ filter="(!(" + Constants.SERVICE_RANKING + "=*))",
+ properties={@Param(name=Constants.SERVICE_RANKING, value="1")}
+)
+public class DictionaryAspect implements DictionaryService
+{
+ /**
+ * This is the service this aspect is applying to.
+ */
+ private volatile DictionaryService m_originalDictionary;
+
+ /**
+ * We'll use the OSGi log service for logging. If no log service is available, then we'll use a NullObject.
+ */
+ @ServiceDependency(required = false)
+ private LogService m_log;
+
+ public boolean checkWord(String word)
+ {
+ m_log.log(LogService.LOG_DEBUG, "DictionaryAspect: checking word " + word);
+ if (word.equals("aspect")) {
+ return true;
+ }
+ return m_originalDictionary.checkWord(word);
+ }
+}