--- /dev/null
+/*\r
+\r
+ Derby - Class org.apache.derby.impl.services.monitor.ModuleInstance\r
+\r
+ Licensed to the Apache Software Foundation (ASF) under one or more\r
+ contributor license agreements. See the NOTICE file distributed with\r
+ this work for additional information regarding copyright ownership.\r
+ The ASF licenses this file to you under the Apache License, Version 2.0\r
+ (the "License"); you may not use this file except in compliance with\r
+ the License. You may obtain a copy of the License at\r
+\r
+ http://www.apache.org/licenses/LICENSE-2.0\r
+\r
+ Unless required by applicable law or agreed to in writing, software\r
+ distributed under the License is distributed on an "AS IS" BASIS,\r
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
+ See the License for the specific language governing permissions and\r
+ limitations under the License.\r
+\r
+ */\r
+\r
+package org.apache.derby.impl.services.monitor;\r
+\r
+import org.apache.derby.iapi.services.monitor.PersistentService;\r
+\r
+import java.util.Properties;\r
+\r
+/**\r
+ A description of an instance of a module.\r
+*/\r
+\r
+\r
+class ModuleInstance {\r
+\r
+ /*\r
+ ** Fields.\r
+ */\r
+\r
+ /**\r
+ The module instance\r
+ */\r
+ protected Object instance;\r
+\r
+ /**\r
+ name of module, can be null\r
+ */\r
+ protected String identifier;\r
+\r
+ /**\r
+ the top-level service this module lives in, can be null or the service itself\r
+ */\r
+ protected Object topLevelService;\r
+\r
+ /**\r
+ the actual service to which I belong, could be null.\r
+ */\r
+ protected Object service;\r
+\r
+ /*\r
+ ** Constructor\r
+ */\r
+\r
+ protected ModuleInstance(Object instance, String identifier,\r
+ Object service, Object topLevelService)\r
+ {\r
+ super();\r
+ this.instance = instance;\r
+ this.identifier = identifier;\r
+ this.topLevelService = topLevelService;\r
+ this.service = service;\r
+\r
+ }\r
+\r
+ protected ModuleInstance(Object instance) {\r
+\r
+ this(instance, null, null, null);\r
+ }\r
+\r
+ protected boolean isTypeAndName(PersistentService serviceType, \r
+ Class factoryInterface, String otherCanonicalName)\r
+ {\r
+ // see if the correct interface is implemented\r
+ if (!factoryInterface.isInstance(instance))\r
+ return false;\r
+\r
+ if ((serviceType != null) && (otherCanonicalName != null))\r
+ return serviceType.isSameService(identifier, otherCanonicalName);\r
+\r
+\r
+ // see if the identifiers match\r
+ if (otherCanonicalName != null) {\r
+ if (identifier == null)\r
+ return false;\r
+ if (!otherCanonicalName.equals(identifier))\r
+ return false;\r
+ } else if (identifier != null) {\r
+ return false;\r
+ }\r
+\r
+ return true;\r
+ }\r
+\r
+ protected String getIdentifier() {\r
+ return identifier;\r
+ }\r
+\r
+ protected Object getTopLevelService() {\r
+ return topLevelService;\r
+ }\r
+\r
+ protected Object getInstance() {\r
+ return instance;\r
+ }\r
+}\r