/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* Licensed 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.dashbuilder.dataprovider;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import javax.annotation.PostConstruct;
import javax.enterprise.context.ApplicationScoped;
import javax.enterprise.context.spi.CreationalContext;
import javax.enterprise.event.Observes;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.BeanManager;
import javax.inject.Inject;
import org.dashbuilder.dataset.DataSetGenerator;
import org.dashbuilder.dataset.def.BeanDataSetDef;
import org.dashbuilder.dataset.def.DataSetDef;
import org.dashbuilder.dataset.events.DataSetDefModifiedEvent;
import org.dashbuilder.dataset.events.DataSetDefRemovedEvent;
import org.dashbuilder.dataset.events.DataSetStaleEvent;
@ApplicationScoped
public class BeanDataSetProviderCDI extends BeanDataSetProvider {
protected BeanManager beanManager;
protected Map<String,DataSetGenerator> generatorMap = new HashMap<>();
public BeanDataSetProviderCDI() {
super();
}
@Inject
public BeanDataSetProviderCDI(StaticDataSetProviderCDI staticDataSetProvider,
BeanManager beanManager) {
super(staticDataSetProvider);
this.beanManager = beanManager;
}
@PostConstruct
protected void init() {
Set<Bean<?>> beans = beanManager.getBeans(DataSetGenerator.class);
for (Bean<?> bean : beans) {
CreationalContext<?> ctx = beanManager.createCreationalContext(bean);
DataSetGenerator generator = (DataSetGenerator) beanManager.getReference(bean, DataSetGenerator.class, ctx);
generatorMap.put(bean.getBeanClass().getName(), generator);
}
}
public DataSetGenerator lookupGenerator(DataSetDef def) {
BeanDataSetDef beanDef = (BeanDataSetDef) def;
String beanName = beanDef.getGeneratorClass();
DataSetGenerator generator = generatorMap.get(beanName);
if (generator != null ) {
return generator;
} else {
throw new IllegalArgumentException("Data set generator class not found: " + beanName);
}
}
// Listen to changes on the data set definition registry
protected void onDataSetStaleEvent(@Observes DataSetStaleEvent event) {
DataSetDef def = event.getDataSetDef();
if (DataSetProviderType.BEAN.equals(def.getProvider())) {
staticDataSetProvider.removeDataSet(def.getUUID());
}
}
protected void onDataSetDefRemovedEvent(@Observes DataSetDefRemovedEvent event) {
DataSetDef def = event.getDataSetDef();
if (DataSetProviderType.BEAN.equals(def.getProvider())) {
staticDataSetProvider.removeDataSet(def.getUUID());
}
}
protected void onDataSetDefModifiedEvent(@Observes DataSetDefModifiedEvent event) {
DataSetDef def = event.getOldDataSetDef();
if (DataSetProviderType.BEAN.equals(def.getProvider())) {
staticDataSetProvider.removeDataSet(def.getUUID());
}
}
}