GroovyAwareMVCGroupManager.java
001 /*
002  * Copyright 2008-2016 the original author or authors.
003  *
004  * Licensed under the Apache License, Version 2.0 (the "License");
005  * you may not use this file except in compliance with the License.
006  * You may obtain a copy of the License at
007  *
008  *     http://www.apache.org/licenses/LICENSE-2.0
009  *
010  * Unless required by applicable law or agreed to in writing, software
011  * distributed under the License is distributed on an "AS IS" BASIS,
012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013  * See the License for the specific language governing permissions and
014  * limitations under the License.
015  */
016 package org.codehaus.griffon.runtime.groovy.mvc;
017 
018 import griffon.core.ApplicationClassLoader;
019 import griffon.core.GriffonApplication;
020 import griffon.core.mvc.MVCGroup;
021 import griffon.util.BuilderCustomizer;
022 import griffon.util.CompositeBuilder;
023 import groovy.util.FactoryBuilderSupport;
024 import org.codehaus.griffon.runtime.core.mvc.DefaultMVCGroupManager;
025 import org.slf4j.Logger;
026 import org.slf4j.LoggerFactory;
027 
028 import javax.annotation.Nonnull;
029 import javax.inject.Inject;
030 import java.util.Collection;
031 import java.util.Map;
032 
033 import static griffon.core.GriffonExceptionHandler.sanitize;
034 import static griffon.util.AnnotationUtils.sortByDependencies;
035 import static org.codehaus.griffon.runtime.groovy.mvc.GroovyAwareMVCGroup.BUILDER;
036 import static org.codehaus.griffon.runtime.groovy.mvc.GroovyAwareMVCGroup.CURRENT_MVCGROUP;
037 
038 /**
039  @author Andres Almiray
040  */
041 public class GroovyAwareMVCGroupManager extends DefaultMVCGroupManager {
042     private static final Logger LOG = LoggerFactory.getLogger(DefaultMVCGroupManager.class);
043     private static final String BUILDER_CUSTOMIZER = "BuilderCustomizer";
044 
045     @Inject
046     public GroovyAwareMVCGroupManager(@Nonnull GriffonApplication application, @Nonnull ApplicationClassLoader applicationClassLoader) {
047         super(application, applicationClassLoader);
048     }
049 
050     @Nonnull
051     @Override
052     @SuppressWarnings("unchecked")
053     protected Map<String, Object> instantiateMembers(@Nonnull Map<String, ClassHolder> classMap, @Nonnull Map<String, Object> args) {
054         Map<String, Object> map = super.instantiateMembers(classMap, args);
055         FactoryBuilderSupport builder = createBuilder(getApplication());
056         map.put(BUILDER, builder);
057         return map;
058     }
059 
060     @Nonnull
061     protected FactoryBuilderSupport createBuilder(@Nonnull GriffonApplication application) {
062         Collection<BuilderCustomizer> customizers = resolveBuilderCustomizers(application);
063         return new CompositeBuilder(customizers.toArray(new BuilderCustomizer[customizers.size()]));
064     }
065 
066     @Override
067     @SuppressWarnings("ConstantConditions")
068     protected void adjustMvcArguments(@Nonnull MVCGroup group, @Nonnull Map<String, Object> args) {
069         super.adjustMvcArguments(group, args);
070         FactoryBuilderSupport builder = (FactoryBuilderSupportgroup.getMember(BUILDER);
071         args.put(BUILDER, builder);
072         for (Map.Entry<String, Object> variable : args.entrySet()) {
073             builder.setVariable(variable.getKey(), variable.getValue());
074         }
075     }
076 
077     @Override
078     protected void initializeMembers(@Nonnull MVCGroup group, @Nonnull Map<String, Object> args) {
079         FactoryBuilderSupport builder = (FactoryBuilderSupportgroup.getMember(BUILDER);
080         builder.setVariable(CURRENT_MVCGROUP, group);
081         super.initializeMembers(group, args);
082     }
083 
084     @Override
085     protected void destroyMembers(@Nonnull MVCGroup group, boolean fireDestructionEvents) {
086         super.destroyMembers(group, fireDestructionEvents);
087 
088         try {
089             FactoryBuilderSupport builder = (FactoryBuilderSupportgroup.getMember(BUILDER);
090             if (builder != null) {
091                 builder.dispose();
092                 builder.getVariables().clear();
093             }
094         catch (Exception e) {
095             // TODO find out why this call breaks applet mode on shutdown
096             LOG.error("Application encountered an error while destroying group '" + group.getMvcId() "'", sanitize(e));
097         }
098     }
099 
100     @Nonnull
101     protected Collection<BuilderCustomizer> resolveBuilderCustomizers(@Nonnull GriffonApplication application) {
102         Collection<BuilderCustomizer> customizerInstances = application.getInjector().getInstances(BuilderCustomizer.class);
103         return sortByDependencies(customizerInstances, BUILDER_CUSTOMIZER, "customizer").values();
104     }
105 }