/*
* Copyright 2004-2008 the original author or authors.
*
* 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.grails.web.converters.marshaller.json;
import grails.converters.JSON;
import grails.persistence.PersistenceMethod;
import grails.web.controllers.ControllerMethod;
import groovy.lang.GroovyObject;
import java.beans.PropertyDescriptor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.List;
import org.grails.core.util.IncludeExcludeSupport;
import org.grails.web.converters.exceptions.ConverterException;
import org.grails.web.converters.marshaller.IncludeExcludePropertyMarshaller;
import org.codehaus.groovy.grails.web.json.JSONWriter;
import org.springframework.beans.BeanUtils;
/**
* @author Siegfried Puchbauer
* @since 1.1
*/
public class GroovyBeanMarshaller extends IncludeExcludePropertyMarshaller<JSON> {
public boolean supports(Object object) {
return object instanceof GroovyObject;
}
public void marshalObject(Object o, JSON json) throws ConverterException {
JSONWriter writer = json.getWriter();
Class<? extends Object> clazz = o.getClass();
List<String> excludes = json.getExcludes(clazz);
List<String> includes = json.getIncludes(clazz);
IncludeExcludeSupport<String> includeExcludeSupport = new IncludeExcludeSupport<String>();
try {
writer.object();
for (PropertyDescriptor property : BeanUtils.getPropertyDescriptors(clazz)) {
Method readMethod = property.getReadMethod();
String name = property.getName();
if(!shouldInclude(includeExcludeSupport, includes, excludes, o, name)) continue;
if (readMethod != null && !(name.equals("metaClass"))&& !(name.equals("class"))) {
if(readMethod.getAnnotation(PersistenceMethod.class) != null) continue;
if(readMethod.getAnnotation(ControllerMethod.class) != null) continue;
Object value = readMethod.invoke(o, (Object[]) null);
writer.key(name);
json.convertAnother(value);
}
}
for (Field field : clazz.getDeclaredFields()) {
int modifiers = field.getModifiers();
if (Modifier.isPublic(modifiers) && !(Modifier.isStatic(modifiers) || Modifier.isTransient(modifiers))) {
String name = field.getName();
if(!shouldInclude(includeExcludeSupport,includes,excludes,o,name)) continue;
writer.key(name);
json.convertAnother(field.get(o));
}
}
writer.endObject();
}
catch (ConverterException ce) {
throw ce;
}
catch (Exception e) {
throw new ConverterException("Error converting Bean with class " + clazz.getName(), e);
}
}
private boolean shouldInclude(IncludeExcludeSupport<String> includeExcludeSupport, List<String> includes, List<String> excludes, Object o, String name) {
return includeExcludeSupport.shouldInclude(includes,excludes, name) && shouldInclude(o,name);
}
}