/*
* Copyright (C) 2011 Citrix Systems, Inc. All rights reserved.
*
* 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.cloud.bridge.util;
import java.io.PrintWriter;
import java.lang.reflect.Field;
import java.util.Calendar;
import java.util.Collection;
import java.util.Date;
import java.util.Iterator;
/**
* @author Kelven Yang
*/
public class XSerializerJsonAdapter implements XSerializerAdapter {
private XSerializer serializer;
public XSerializerJsonAdapter() {
}
@Override
public void setSerializer(XSerializer serializer) {
this.serializer = serializer;
}
@Override
public void beginElement(String element, String namespace, int indentLevel, PrintWriter writer) {
indent(true, indentLevel, writer);
if(element != null && !element.isEmpty())
writer.print(element + ": {");
else
writer.print("{");
}
@Override
public void endElement(String element, int indentLevel, PrintWriter writer) {
indent(true, indentLevel, writer);
writer.print("}");
}
@Override
public void writeElement(String elementName, String itemName, Object value, Field f, int indentLevel, PrintWriter writer) {
Class<?> fieldType = f.getType();
if(!serializer.isComposite(fieldType)) {
if(fieldType == Date.class) {
if(value != null) {
indent(true, indentLevel, writer);
writer.print(elementName + ":\"");
writer.print(DateHelper.getGMTDateFormat("yyyy-MM-dd").format((Date)value) + "T"
+ DateHelper.getGMTDateFormat("HH:mm:ss").format((Date)value) + ".000Z");
writer.print("\"");
} else {
if(!serializer.omitNullField(f)) {
indent(true, indentLevel, writer);
writer.print(elementName + ":null");
}
}
} else if(fieldType == Calendar.class) {
if(value != null) {
indent(true, indentLevel, writer);
Date dt = ((Calendar)value).getTime();
writer.print(elementName + ":\"");
writer.print(DateHelper.getGMTDateFormat("yyyy-MM-dd").format(dt) + "T"
+ DateHelper.getGMTDateFormat("HH:mm:ss").format(dt) + ".000Z");
writer.print("\"");
} else {
if(!serializer.omitNullField(f)) {
indent(true, indentLevel, writer);
writer.print(elementName + ":null");
}
}
} else {
if(value != null) {
indent(true, indentLevel, writer);
writer.print(elementName + ":\"");
writer.print(value);
writer.print("\"");
} else {
if(!serializer.omitNullField(f)) {
indent(true, indentLevel, writer);
writer.print(elementName + ":null");
}
}
}
} else if(fieldType.isArray()) {
if(value != null) {
indent(true, indentLevel, writer);
writer.print(elementName + ":[");
indentLevel++;
Object[] array = (Object[])value;
for(int i = 0; i < array.length; i++) {
serializer.serializeTo(array[i], "", null, indentLevel, writer);
if(i < array.length - 1)
writeSeparator(indentLevel, writer);
}
indentLevel--;
indent(true, indentLevel, writer);
writer.print("]");
} else {
if(!serializer.omitNullField(f)) {
indent(true, indentLevel, writer);
writer.print(elementName + ":null");
}
}
} else if (Collection.class.isAssignableFrom(fieldType)) {
if(value != null) {
indent(true, indentLevel, writer);
writer.print(elementName + ":[");
indentLevel++;
Iterator it = ((Collection)value).iterator();
if(it != null) {
while(it.hasNext()) {
Object sub = it.next();
serializer.serializeTo(sub, "", null, indentLevel, writer);
if(it.hasNext())
writeSeparator(indentLevel, writer);
}
}
indentLevel--;
indent(true, indentLevel, writer);
writer.print("]");
} else {
if(!serializer.omitNullField(f)) {
indent(true, indentLevel, writer);
writer.print(elementName + ":null");
}
}
} else {
serializer.serializeTo(value, elementName, null, indentLevel, writer);
}
}
@Override
public void writeSeparator(int indentLevel, PrintWriter writer) {
writer.print(",");
}
private void indent(boolean newLine, int indentLevel, PrintWriter writer) {
if(newLine)
writer.println("");
for(int i = 0; i < indentLevel; i++)
writer.append(" ");
}
}