/*
* Copyright 2007 Google 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.google.gwt.user.rebind.rpc;
import com.google.gwt.core.ext.GeneratorContextExt;
import com.google.gwt.core.ext.GeneratorExt;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.typeinfo.JClassType;
import com.google.gwt.core.ext.typeinfo.TypeOracle;
import com.google.gwt.dev.javac.rebind.RebindResult;
import com.google.gwt.dev.javac.rebind.RebindStatus;
/**
* Generator for producing the asynchronous version of a
* {@link com.google.gwt.user.client.rpc.RemoteService RemoteService} interface.
*/
public class ServiceInterfaceProxyGenerator extends GeneratorExt {
@Override
public RebindResult generateIncrementally(TreeLogger logger, GeneratorContextExt ctx,
String requestedClass) throws UnableToCompleteException {
TypeOracle typeOracle = ctx.getTypeOracle();
assert (typeOracle != null);
JClassType remoteService = typeOracle.findType(requestedClass);
if (remoteService == null) {
logger.log(TreeLogger.ERROR, "Unable to find metadata for type '"
+ requestedClass + "'", null);
throw new UnableToCompleteException();
}
if (remoteService.isInterface() == null) {
logger.log(TreeLogger.ERROR, remoteService.getQualifiedSourceName()
+ " is not an interface", null);
throw new UnableToCompleteException();
}
ProxyCreator proxyCreator = createProxyCreator(remoteService);
TreeLogger proxyLogger = logger.branch(TreeLogger.DEBUG,
"Generating client proxy for remote service interface '"
+ remoteService.getQualifiedSourceName() + "'", null);
String returnTypeName = proxyCreator.create(proxyLogger, ctx);
/*
* Return with RebindStatus.USE_PARTIAL_CACHED, since we are implementing an
* incremental scheme, which allows us to use a mixture of previously cached
* and newly generated compilation units and artifacts. For example, the
* field serializers only need to be generated fresh if their source type
* has changed (or if no previously cached version exists).
*/
return new RebindResult(RebindStatus.USE_PARTIAL_CACHED, returnTypeName);
}
protected ProxyCreator createProxyCreator(JClassType remoteService) {
return new ProxyCreator(remoteService);
}
}