| /* |
| * 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.openjpa.conf; |
| |
| import java.util.Map; |
| |
| import org.apache.openjpa.lib.conf.Configuration; |
| import org.apache.openjpa.lib.conf.PluginValue; |
| import org.apache.openjpa.meta.MetaDataRepository; |
| |
| /** |
| * A {@link PluginValue} that interacts with the {@link CacheMarshaller} |
| * to cache the metadata repository between executions. |
| * |
| * @since 1.1.0 |
| */ |
| public class MetaDataRepositoryValue |
| extends PluginValue { |
| |
| private static final String KEY = "MetaDataRepository"; |
| |
| public MetaDataRepositoryValue() { |
| super(KEY, false); |
| String[] aliases = new String[] { |
| "default", |
| MetaDataRepository.class.getName() |
| }; |
| setAliases(aliases); |
| setDefault(aliases[0]); |
| setString(aliases[0]); |
| } |
| |
| @Override |
| public Object instantiate(Class type, Configuration c, boolean fatal) { |
| MetaDataRepository repos = null; |
| OpenJPAConfiguration conf = (OpenJPAConfiguration) c; |
| |
| Object[] os = (Object[]) CacheMarshallersValue.getMarshallerById( |
| conf, MetaDataCacheMaintenance.class.getName()) |
| .load(); |
| if (os != null) { |
| repos = (MetaDataRepository) os[0]; |
| if (os[1] != null) |
| // It's a bit odd that we do this in MetaDataRepositoryValue. |
| // We need to serialize all the various bits of configuration |
| // together; maybe we can move the caching logic somewhere |
| // else? |
| conf.getQueryCompilationCacheInstance().putAll((Map) os[1]); |
| } |
| |
| if (repos == null) |
| return super.instantiate(type, c, fatal); |
| else |
| return repos; |
| } |
| |
| |
| } |