com.google.gwt.user.rebind.rpc.ServiceInterfaceProxyGenerator Maven / Gradle / Ivy
/*
* 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.GeneratorContext;
import com.google.gwt.core.ext.IncrementalGenerator;
import com.google.gwt.core.ext.RebindResult;
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;
/**
* Generator for producing the asynchronous version of a
* {@link com.google.gwt.user.client.rpc.RemoteService RemoteService} interface.
*/
public class ServiceInterfaceProxyGenerator extends IncrementalGenerator {
/*
* A version id. Increment this as needed, when structural changes are made to
* the generated output, specifically with respect to it's effect on the
* caching and reuse of previous generator results. Previously cached
* generator results will be invalidated automatically if they were generated
* by a version of this generator with a different version id.
*/
private static final long GENERATOR_VERSION_ID = 1L;
@Override
public RebindResult generateIncrementally(TreeLogger logger, GeneratorContext 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);
return proxyCreator.create(proxyLogger, ctx);
}
@Override
public long getVersionId() {
return GENERATOR_VERSION_ID;
}
protected ProxyCreator createProxyCreator(JClassType remoteService) {
return new ProxyCreator(remoteService);
}
}