Moved the FilterIndex to the public package. Although highly experimental, it is part of the API.
git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1097029 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/dependencymanager/core/src/main/java/org/apache/felix/dm/FilterIndex.java b/dependencymanager/core/src/main/java/org/apache/felix/dm/FilterIndex.java
new file mode 100644
index 0000000..62116f7
--- /dev/null
+++ b/dependencymanager/core/src/main/java/org/apache/felix/dm/FilterIndex.java
@@ -0,0 +1,47 @@
+/*
+ * 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;
+
+import java.util.List;
+
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.ServiceEvent;
+import org.osgi.framework.ServiceListener;
+
+/**
+ * A filter index is an interface you can implement to create your own, optimized index for specific filter expressions.
+ *
+ * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a>
+ */
+public interface FilterIndex {
+ /** Opens this filter index. */
+ public void open(BundleContext context);
+ /** Closes this filter index. */
+ public void close();
+ /** Determines if the combination of class and filter is applicable for this filter index. */
+ public boolean isApplicable(String clazz, String filter);
+ /** Returns all service references that match the specified class and filter. */
+ public List /* <ServiceReference> */ getAllServiceReferences(String clazz, String filter);
+ /** Invoked whenever a service event occurs. */
+ public void serviceChanged(ServiceEvent event);
+ /** Adds a service listener to this filter index. */
+ public void addServiceListener(ServiceListener listener, String filter);
+ /** Removes a service listener from this filter index. */
+ public void removeServiceListener(ServiceListener listener);
+}