/*
* Copyright 2014 Jeanfrancois Arcand
*
* 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.
*/
/*
* Copyright 2009 Richard Zschech.
*
* 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.atmosphere.gwt20.rebind;
import com.google.gwt.core.ext.GeneratorContext;
import com.google.gwt.core.ext.IncrementalGenerator;
import com.google.gwt.core.ext.RebindMode;
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.JType;
import com.google.gwt.core.ext.typeinfo.NotFoundException;
import com.google.gwt.core.ext.typeinfo.TypeOracle;
import com.google.gwt.user.client.rpc.SerializationException;
import com.google.gwt.user.client.rpc.impl.Serializer;
import com.google.gwt.user.rebind.ClassSourceFileComposerFactory;
import com.google.gwt.user.rebind.SourceWriter;
import com.google.gwt.user.rebind.rpc.SerializableTypeOracle;
import com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder;
import com.google.gwt.user.rebind.rpc.TypeSerializerCreator;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.atmosphere.gwt20.client.GwtRpcSerialTypes;
public class SerializerGenerator extends IncrementalGenerator {
@Override
public long getVersionId() {
return 1L;
}
@Override
public RebindResult generateIncrementally(TreeLogger logger, GeneratorContext context, String typeName) throws UnableToCompleteException {
TypeOracle typeOracle = context.getTypeOracle();
// Create the CometSerializer impl
String packageName = "comet";
String className = typeName.replace('.', '_') + "Impl";
PrintWriter printWriter = context.tryCreate(logger, packageName, className);
if (printWriter != null) {
try {
JClassType type = typeOracle.getType(typeName);
GwtRpcSerialTypes annotation = type.getAnnotation(GwtRpcSerialTypes.class);
if (annotation == null) {
logger.log(TreeLogger.ERROR, "No SerialTypes annotation on CometSerializer type: " + typeName);
throw new UnableToCompleteException();
}
SerializableTypeOracleBuilder typesSentToBrowserBuilder = new SerializableTypeOracleBuilder(logger, context);
SerializableTypeOracleBuilder typesSentFromBrowserBuilder = new SerializableTypeOracleBuilder(logger, context);
List<Class<?>> serializableTypes = new ArrayList();
Collections.addAll(serializableTypes, annotation.value());
for (Class<?> serializable : serializableTypes) {
int rank = 0;
if (serializable.isArray()) {
while (serializable.isArray()) {
serializable = (Class<?>) serializable.getComponentType();
rank++;
}
}
JType resolvedType = typeOracle.getType(serializable.getCanonicalName());
while (rank > 0) {
resolvedType = typeOracle.getArrayType(resolvedType);
rank--;
}
typesSentToBrowserBuilder.addRootType(logger, resolvedType);
typesSentFromBrowserBuilder.addRootType(logger, resolvedType);
}
// Create a resource file to receive all of the serialization information
// computed by STOB and mark it as private so it does not end up in the
// output.
OutputStream pathInfo = context.tryCreateResource(logger, typeName + ".rpc.log");
PrintWriter writer = new PrintWriter(new OutputStreamWriter(pathInfo));
writer.write("====================================\n");
writer.write("Types potentially sent from server:\n");
writer.write("====================================\n\n");
writer.flush();
typesSentToBrowserBuilder.setLogOutputWriter(writer);
SerializableTypeOracle typesSentToBrowser = typesSentToBrowserBuilder.build(logger);
writer.write("===================================\n");
writer.write("Types potentially sent from browser:\n");
writer.write("===================================\n\n");
writer.flush();
typesSentFromBrowserBuilder.setLogOutputWriter(writer);
SerializableTypeOracle typesSentFromBrowser = typesSentFromBrowserBuilder.build(logger);
writer.close();
if (pathInfo != null) {
context.commitResource(logger, pathInfo).setPrivate(true);
}
// Create the serializer
final String modifiedTypeName = typeName.replace('.', '_');
TypeSerializerCreator tsc = new TypeSerializerCreator(logger, typesSentFromBrowser, typesSentToBrowser, context, "comet." + modifiedTypeName, modifiedTypeName);
String realize = tsc.realize(logger);
// Create the CometSerializer impl
ClassSourceFileComposerFactory composerFactory = new ClassSourceFileComposerFactory(packageName, className);
composerFactory.addImport(Serializer.class.getName());
composerFactory.addImport(SerializationException.class.getName());
composerFactory.addImport(Serializable.class.getName());
composerFactory.setSuperclass(typeName);
SourceWriter sourceWriter = composerFactory.createSourceWriter(context, printWriter);
sourceWriter.print("private Serializer SERIALIZER = new " + realize + "();");
sourceWriter.print("protected Serializer getRPCSerializer() {return SERIALIZER;}");
sourceWriter.commit(logger);
} catch (NotFoundException e) {
logger.log(TreeLogger.ERROR, "", e);
throw new UnableToCompleteException();
}
}
return new RebindResult(RebindMode.USE_ALL_NEW_WITH_NO_CACHING, packageName + '.' + className);
}
}