| /* |
| * 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.meta; |
| |
| import java.lang.reflect.Modifier; |
| |
| import org.apache.openjpa.jdbc.meta.strats.NoneFieldStrategy; |
| import org.apache.openjpa.lib.util.Localizer; |
| import org.apache.openjpa.meta.MetaDataModes; |
| import org.apache.openjpa.meta.ValueMetaData; |
| import org.apache.openjpa.util.MetaDataException; |
| |
| /** |
| * Installer that attempts to use the given mapping information, and |
| * fails if it does not work. |
| * |
| * @author Abe White |
| * @since 0.4.0 |
| */ |
| public class RuntimeStrategyInstaller |
| extends StrategyInstaller { |
| |
| |
| private static final long serialVersionUID = 1L; |
| private static final Localizer _loc = Localizer.forPackage |
| (RuntimeStrategyInstaller.class); |
| |
| /** |
| * Constructor; supply configuration. |
| */ |
| public RuntimeStrategyInstaller(MappingRepository repos) { |
| super(repos); |
| } |
| |
| @Override |
| public void installStrategy(ClassMapping cls) { |
| if ((cls.getSourceMode() & MetaDataModes.MODE_MAPPING) == 0) |
| throw new MetaDataException(_loc.get("no-mapping", cls)); |
| |
| ClassStrategy strat = repos.namedStrategy(cls); |
| if (strat == null) |
| strat = repos.defaultStrategy(cls, false); |
| cls.setStrategy(strat, Boolean.FALSE); |
| } |
| |
| @Override |
| public void installStrategy(FieldMapping field) { |
| FieldStrategy strategy = null; |
| ClassMapping owner = getOutermostDefiningMapping(field); |
| if (owner != null && !owner.isEmbeddable() && !owner.isAbstract()) { |
| strategy = repos.namedStrategy(field, true); |
| } |
| if (strategy == null) { |
| try { |
| strategy = repos.defaultStrategy(field, true, false); |
| } catch (MetaDataException mde) { |
| // if the parent class is abstract and field is unmapped, |
| // allow it to pass (assume subclasses map the field) |
| Class cls = field.getDefiningMetaData().getDescribedType(); |
| if (!Modifier.isAbstract(cls.getModifiers()) |
| || field.getMappedBy() != null |
| || field.getMappingInfo().hasSchemaComponents() |
| || field.getValueInfo().hasSchemaComponents() |
| || field.getElementMapping().getValueInfo().hasSchemaComponents() |
| || field.getKeyMapping().getValueInfo().hasSchemaComponents()) |
| throw mde; |
| |
| strategy = NoneFieldStrategy.getInstance(); |
| } |
| } |
| field.setStrategy(strategy, Boolean.FALSE); |
| } |
| |
| private ClassMapping getOutermostDefiningMapping(ValueMetaData vm) { |
| if (vm instanceof FieldMapping) { |
| ClassMapping owner = ((FieldMapping)vm).getDefiningMapping(); |
| ValueMetaData val = owner.getEmbeddingMetaData(); |
| if (val == null) |
| return owner; |
| return getOutermostDefiningMapping(val); |
| } else if (vm instanceof ValueMappingImpl) { |
| FieldMapping owner = ((ValueMappingImpl)vm).getFieldMapping(); |
| return getOutermostDefiningMapping(owner); |
| } |
| return null; |
| } |
| |
| @Override |
| public void installStrategy(Version version) { |
| VersionStrategy strat = repos.namedStrategy(version); |
| if (strat == null) |
| strat = repos.defaultStrategy(version, false); |
| version.setStrategy(strat, Boolean.FALSE); |
| } |
| |
| @Override |
| public void installStrategy(Discriminator discrim) { |
| DiscriminatorStrategy strat = repos.namedStrategy(discrim); |
| if (strat == null) |
| strat = repos.defaultStrategy(discrim, false); |
| discrim.setStrategy(strat, Boolean.FALSE); |
| } |
| } |