| /* |
| * 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.jdbc.conf; |
| |
| import org.apache.commons.lang.StringUtils; |
| import org.apache.openjpa.jdbc.meta.MetaDataPlusMappingFactory; |
| import org.apache.openjpa.lib.conf.Configuration; |
| import org.apache.openjpa.lib.conf.Configurations; |
| import org.apache.openjpa.lib.conf.PluginValue; |
| import org.apache.openjpa.lib.log.Log; |
| import org.apache.openjpa.lib.util.Localizer; |
| import org.apache.openjpa.meta.MetaDataFactory; |
| |
| /** |
| * Handles the complex logic of creating a {@link MetaDataFactory} for |
| * combined metadata and mapping. |
| * |
| * @author Abe White |
| * @nojavadoc |
| */ |
| public class MappingFactoryValue |
| extends PluginValue { |
| |
| private static final Localizer _loc = Localizer.forPackage |
| (MappingFactoryValue.class); |
| |
| private String[] _metaFactoryDefaults = null; |
| private String[] _mappedMetaFactoryDefaults = null; |
| |
| public MappingFactoryValue(String prop) { |
| super(prop, false); |
| } |
| |
| /** |
| * Default setting for a given <code>MetaDataFactory</code> alias setting. |
| * If a <code>MappingFactory</code> value is not supplied, we check these |
| * defaults against the <code>MetaDataFactory</code> setting. If the |
| * <code>MetaDataFactory</code> does not have a default, we assume it |
| * handles both metadata and mapping factory. |
| */ |
| public void setMetaDataFactoryDefault(String metaAlias, |
| String mappingAlias) { |
| _metaFactoryDefaults = setAlias(metaAlias, mappingAlias, |
| _metaFactoryDefaults); |
| } |
| |
| /** |
| * If the <code>Mapping</code> property is set, we check these defaults |
| * before checking metadata factory defaults. |
| */ |
| public void setMappedMetaDataFactoryDefault(String metaAlias, |
| String mappingAlias) { |
| _mappedMetaFactoryDefaults = setAlias(metaAlias, mappingAlias, |
| _mappedMetaFactoryDefaults); |
| } |
| |
| /** |
| * Intantiate a {@link MetaDataFactory} responsible for both metadata and |
| * mapping. |
| */ |
| public MetaDataFactory instantiateMetaDataFactory(Configuration conf, |
| PluginValue metaPlugin, String mapping) { |
| return instantiateMetaDataFactory(conf, metaPlugin, mapping, true); |
| } |
| |
| /** |
| * Intantiate a {@link MetaDataFactory} responsible for both metadata and |
| * mapping. |
| */ |
| public MetaDataFactory instantiateMetaDataFactory(Configuration conf, |
| PluginValue metaPlugin, String mapping, boolean fatal) { |
| String clsName = getClassName(); |
| String props = getProperties(); |
| String metaClsName = metaPlugin.getClassName(); |
| String metaProps = metaPlugin.getProperties(); |
| |
| // if no mapping factory set, check for default for this factory |
| if (StringUtils.isEmpty(clsName)) { |
| String def; |
| if (!StringUtils.isEmpty(mapping)) { |
| def = unalias(metaPlugin.alias(metaClsName), |
| _mappedMetaFactoryDefaults, true); |
| if (def != null) |
| clsName = unalias(def); |
| } |
| if (StringUtils.isEmpty(clsName)) { |
| def = unalias(metaPlugin.alias(metaClsName), |
| _metaFactoryDefaults, true); |
| if (def != null) |
| clsName = unalias(def); |
| } |
| } |
| |
| // if mapping factory and metadata factory the same, combine |
| // into metadata factory |
| if (clsName != null && clsName.equals(metaClsName)) { |
| if (props != null && metaProps == null) |
| metaProps = props; |
| else if (props != null) |
| metaProps += "," + props; |
| clsName = null; |
| props = null; |
| } |
| |
| // instantiate factories |
| MetaDataFactory map = (MetaDataFactory) newInstance(clsName, |
| MetaDataFactory.class, conf, fatal); |
| MetaDataFactory meta; |
| if (map != null |
| && map.getClass().getName().indexOf("Deprecated") != -1) { |
| // deprecated mapping factories take over metadata too, so we have |
| // to special-case them to treat them like metadata factory only |
| meta = map; |
| map = null; |
| } else { |
| meta = (MetaDataFactory) metaPlugin.newInstance |
| (metaClsName, MetaDataFactory.class, conf, fatal); |
| } |
| |
| // configure factories. if only meta factory, allow user to specify |
| // its mapping properties in the mapping factory setting |
| if (map == null && props != null) { |
| if (metaProps == null) |
| metaProps = props; |
| else |
| metaProps += ", " + props; |
| } |
| Configurations.configureInstance(map, conf, props, |
| (fatal) ? getProperty() : null); |
| Configurations.configureInstance(meta, conf, metaProps, |
| (fatal) ? metaPlugin.getProperty() : null); |
| |
| Log log = conf.getLog(JDBCConfiguration.LOG_METADATA); |
| if (log.isTraceEnabled()) { |
| log.trace(_loc.get("meta-factory", meta)); |
| if (map != null) |
| log.trace(_loc.get("map-factory", map)); |
| } |
| |
| // if no mapping setting, return meta factory alone, assuming it handles |
| // both metadata and mapping |
| MetaDataFactory ret = (map == null) ? meta |
| : new MetaDataPlusMappingFactory(meta, map); |
| return ret; |
| } |
| } |