/*
* Copyright 2009 JBoss, a divison 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 com.google.gwt.core.ext.GeneratorContext;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.user.rebind.SourceWriter;
import org.jboss.errai.bus.server.annotations.ExposeEntity;
import org.jboss.errai.bus.server.util.ConfigUtil;
import org.jboss.errai.bus.server.util.RebindVisitor;
import org.mvel2.templates.CompiledTemplate;
import org.mvel2.templates.TemplateCompiler;
import org.mvel2.templates.TemplateRuntime;
import java.io.File;
import java.io.InputStream;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class SerializationExtensionGenerator implements ExtensionGenerator {
private CompiledTemplate demarshallerGenerator;
private CompiledTemplate marshallerGenerator;
public SerializationExtensionGenerator() {
InputStream istream = this.getClass().getResourceAsStream("DemarshallerGenerator.mv");
demarshallerGenerator = TemplateCompiler.compileTemplate(istream, null);
istream = this.getClass().getResourceAsStream("MarshallerGenerator.mv");
marshallerGenerator = TemplateCompiler.compileTemplate(istream, null);
}
public void generate(GeneratorContext context, TreeLogger logger, SourceWriter writer, List<File> roots) {
ConfigUtil.visitAllTargets(roots, context, logger, writer,
new RebindVisitor() {
public void visit(Class<?> visit, GeneratorContext context, TreeLogger logger, SourceWriter writer) {
if (visit.isAnnotationPresent(ExposeEntity.class)) {
Map<String, Class> types = new HashMap<String, Class>();
for (Field f : visit.getDeclaredFields()) {
if ((f.getModifiers() & (Modifier.TRANSIENT | Modifier.STATIC)) != 0 ||
f.isSynthetic()) {
continue;
}
types.put(f.getName(), f.getType());
}
Map<String, Object> templateVars = new HashMap<String, Object>();
templateVars.put("className", visit.getName());
templateVars.put("fields", types.keySet());
templateVars.put("targetTypes", types);
String genStr;
writer.print(genStr = (String) TemplateRuntime.execute(demarshallerGenerator, templateVars));
logger.log(TreeLogger.Type.INFO, genStr);
writer.print(genStr = (String) TemplateRuntime.execute(marshallerGenerator, templateVars));
logger.log(TreeLogger.Type.INFO, genStr);
logger.log(TreeLogger.Type.INFO, "Generated mashaller/demarshaller for: " + visit.getName());
}
}
}
);
}
}