/*
* 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 net.zschech.gwt.comet.rebind;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.Serializable;
import java.util.List;
import net.zschech.gwt.comet.client.SerialMode;
import net.zschech.gwt.comet.client.SerialTypes;
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.JField;
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.dev.javac.rebind.RebindResult;
import com.google.gwt.dev.javac.rebind.RebindStatus;
import com.google.gwt.dev.util.collect.Lists;
import com.google.gwt.rpc.linker.RpcDataArtifact;
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.SerializationUtils;
import com.google.gwt.user.rebind.rpc.TypeSerializerCreator;
public class CometSerializerGenerator extends GeneratorExt {
@Override
public RebindResult generateIncrementally(TreeLogger logger, GeneratorContextExt 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);
SerialTypes annotation = type.getAnnotation(SerialTypes.class);
if (annotation == null) {
logger.log(TreeLogger.ERROR, "No SerialTypes annotation on CometSerializer type: " + typeName);
throw new UnableToCompleteException();
}
SerializableTypeOracleBuilder typesSentToBrowserBuilder = new SerializableTypeOracleBuilder(logger, context.getPropertyOracle(), context);
SerializableTypeOracleBuilder typesSentFromBrowserBuilder = new SerializableTypeOracleBuilder(logger, context.getPropertyOracle(), context);
for (Class<? extends Serializable> serializable : annotation.value()) {
int rank = 0;
if (serializable.isArray()) {
while (serializable.isArray()) {
serializable = (Class<? extends Serializable>) serializable.getComponentType();
rank++;
}
}
JType resolvedType = typeOracle.getType(serializable.getCanonicalName());
while (rank > 0) {
resolvedType = typeOracle.getArrayType(resolvedType);
rank--;
}
typesSentToBrowserBuilder.addRootType(logger, resolvedType);
}
OutputStream pathInfo = context.tryCreateResource(logger, typeName + ".rpc.log");
PrintWriter writer = new PrintWriter(new OutputStreamWriter(pathInfo));
writer.write("====================================\n");
writer.write("Types potentially sent from browser:\n");
writer.write("====================================\n\n");
writer.flush();
typesSentToBrowserBuilder.setLogOutputWriter(writer);
SerializableTypeOracle typesSentFromBrowser = typesSentFromBrowserBuilder.build(logger);
writer.write("===================================\n");
writer.write("Types potentially sent from server:\n");
writer.write("===================================\n\n");
writer.flush();
typesSentFromBrowserBuilder.setLogOutputWriter(writer);
SerializableTypeOracle typesSentToBrowser = typesSentToBrowserBuilder.build(logger);
writer.close();
if (pathInfo != null) {
context.commitResource(logger, pathInfo).setPrivate(true);
}
// Create the serializer
String modifiedTypeName = typeName.replace('.', '_') + "Serializer";
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(SerialMode.class.getName());
composerFactory.setSuperclass(typeName);
// TODO is the SERIALIZER required for DE RPC?
SourceWriter sourceWriter = composerFactory.createSourceWriter(context, printWriter);
sourceWriter.print("private Serializer SERIALIZER = new " + realize + "();");
sourceWriter.print("protected Serializer getSerializer() {return SERIALIZER;}");
sourceWriter.print("public SerialMode getMode() {return SerialMode." + annotation.mode().name() + ";}");
sourceWriter.commit(logger);
if (annotation.mode() == SerialMode.DE_RPC) {
RpcDataArtifact data = new RpcDataArtifact(type.getQualifiedSourceName());
for (JType t : typesSentToBrowser.getSerializableTypes()) {
if (!(t instanceof JClassType)) {
continue;
}
JField[] serializableFields = SerializationUtils.getSerializableFields(context.getTypeOracle(), (JClassType) t);
List<String> names = Lists.create();
for (int i = 0, j = serializableFields.length; i < j; i++) {
names = Lists.add(names, serializableFields[i].getName());
}
data.setFields(SerializationUtils.getRpcTypeName(t), names);
}
context.commitArtifact(logger, data);
}
}
catch (NotFoundException e) {
logger.log(TreeLogger.ERROR, "", e);
throw new UnableToCompleteException();
}
}
return new RebindResult(RebindStatus.USE_PARTIAL_CACHED, packageName + '.' + className);
}
}