/**
* Copyright 2013 ArcBees Inc.
*
* 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 com.gwtplatform.dispatch.rest.rebind;
import java.util.HashSet;
import java.util.Set;
import javax.inject.Inject;
import javax.inject.Provider;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.app.VelocityEngine;
import com.google.common.eventbus.EventBus;
import com.google.common.eventbus.Subscribe;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.typeinfo.TypeOracle;
import com.gwtplatform.dispatch.rest.client.ActionMetadataProvider;
import com.gwtplatform.dispatch.rest.client.MetadataType;
import com.gwtplatform.dispatch.rest.rebind.event.RegisterMetadataEvent;
import com.gwtplatform.dispatch.rest.rebind.type.RegisterMetadataHolder;
import com.gwtplatform.dispatch.rest.rebind.util.GeneratorUtil;
public class ActionMetadataProviderGenerator extends AbstractVelocityGenerator {
private static final String TEMPLATE = "com/gwtplatform/dispatch/rest/rebind/ActionMetadataProvider.vm";
private final Set<RegisterMetadataHolder> registeredMetadata = new HashSet<RegisterMetadataHolder>();
@Inject
ActionMetadataProviderGenerator(TypeOracle typeOracle,
Logger logger,
Provider<VelocityContext> velocityContextProvider,
VelocityEngine velocityEngine,
GeneratorUtil generatorUtil,
EventBus eventBus) {
super(typeOracle, logger, velocityContextProvider, velocityEngine, generatorUtil);
eventBus.register(this);
}
public void generate() throws UnableToCompleteException {
String implName = ActionMetadataProvider.class.getSimpleName() + SUFFIX;
mergeTemplate(TEMPLATE, implName);
}
@Subscribe
public void handleRegisterMetadata(RegisterMetadataEvent event) {
String metadata = event.getMetadata();
MetadataType metadataType = event.getMetadataType();
String actionClass = event.getActionClass();
RegisterMetadataHolder metadataHolder = new RegisterMetadataHolder(actionClass, metadataType, metadata);
getLogger().debug("Metadata " + metadata + " registered.");
registeredMetadata.add(metadataHolder);
}
@Override
protected String getPackage() {
return ActionMetadataProvider.class.getPackage().getName();
}
@Override
protected void populateVelocityContext(VelocityContext velocityContext) throws UnableToCompleteException {
velocityContext.put("metadata", registeredMetadata);
}
}