/*
* Copyright 2011 JBoss, by Red Hat, 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 org.jboss.errai.bus.rebind;
import java.util.Collection;
import org.jboss.errai.bus.client.api.messaging.MessageBus;
import org.jboss.errai.bus.client.framework.RpcProxyLoader;
import org.jboss.errai.bus.server.annotations.Remote;
import org.jboss.errai.codegen.InnerClass;
import org.jboss.errai.codegen.Parameter;
import org.jboss.errai.codegen.Statement;
import org.jboss.errai.codegen.builder.ClassStructureBuilder;
import org.jboss.errai.codegen.builder.MethodBlockBuilder;
import org.jboss.errai.codegen.builder.impl.ClassBuilder;
import org.jboss.errai.codegen.builder.impl.ObjectBuilder;
import org.jboss.errai.codegen.meta.MetaClass;
import org.jboss.errai.codegen.util.Stmt;
import org.jboss.errai.common.client.framework.ProxyProvider;
import org.jboss.errai.common.client.framework.RemoteServiceProxyFactory;
import org.jboss.errai.common.metadata.RebindUtils;
import org.jboss.errai.config.rebind.AbstractAsyncGenerator;
import org.jboss.errai.config.rebind.GenerateAsync;
import org.jboss.errai.config.util.ClassScanner;
import com.google.gwt.core.ext.GeneratorContext;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
/**
* Generates the implementation of {@link RpcProxyLoader}.
*
* @author Christian Sadilek <csadilek@redhat.com>
*/
@GenerateAsync(RpcProxyLoader.class)
public class RpcProxyLoaderGenerator extends AbstractAsyncGenerator {
private final String packageName = RpcProxyLoader.class.getPackage().getName();
private final String className = RpcProxyLoader.class.getSimpleName() + "Impl";
@Override
public String generate(final TreeLogger logger, final GeneratorContext context, final String typeName)
throws UnableToCompleteException {
return startAsyncGeneratorsAndWaitFor(RpcProxyLoader.class, context, logger, packageName, className);
}
@Override
protected String generate(final TreeLogger logger, final GeneratorContext context) {
ClassStructureBuilder<?> classBuilder = ClassBuilder.implement(RpcProxyLoader.class);
final MethodBlockBuilder<?> loadProxies =
classBuilder.publicMethod(void.class, "loadProxies", Parameter.of(MessageBus.class, "bus", true));
final Collection<MetaClass> typesAnnotatedWith = ClassScanner.getTypesAnnotatedWith(Remote.class,
RebindUtils.findTranslatablePackages(context));
for (final MetaClass remote : typesAnnotatedWith) {
if (remote.isInterface()) {
// create the remote proxy for this interface
final ClassStructureBuilder<?> remoteProxy = new RpcProxyGenerator(remote).generate();
loadProxies.append(new InnerClass(remoteProxy.getClassDefinition()));
// create the proxy provider
final Statement proxyProvider = ObjectBuilder.newInstanceOf(ProxyProvider.class)
.extend()
.publicOverridesMethod("getProxy")
.append(Stmt.nestedCall(Stmt.newObject(remoteProxy.getClassDefinition())).returnValue())
.finish()
.finish();
loadProxies.append(Stmt.invokeStatic(RemoteServiceProxyFactory.class, "addRemoteProxy", remote, proxyProvider));
}
}
classBuilder = (ClassStructureBuilder<?>) loadProxies.finish();
return classBuilder.toJavaString();
}
}