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Added new JSON object serializers

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Ziver Koc 2013-06-06 22:36:00 +00:00
parent 30c0b95437
commit e03d12263a
3 changed files with 412 additions and 0 deletions
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123
src/zutil/parser/json/JSONObjectInputStream.java Normal file
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/*******************************************************************************
* Copyright (c) 2013 Ziver
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
******************************************************************************/
package zutil.parser.json;
import java.io.Closeable;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInput;
public class JSONObjectInputStream extends InputStream implements ObjectInput, Closeable{
public JSONObjectInputStream(InputStream bout) {
// TODO Auto-generated constructor stub
}
public void readFully(byte[] b) throws IOException {
// TODO Auto-generated method stub
}
public void readFully(byte[] b, int off, int len) throws IOException {
// TODO Auto-generated method stub
}
public int skipBytes(int n) throws IOException {
// TODO Auto-generated method stub
return 0;
}
public boolean readBoolean() throws IOException {
// TODO Auto-generated method stub
return false;
}
public byte readByte() throws IOException {
// TODO Auto-generated method stub
return 0;
}
public int readUnsignedByte() throws IOException {
// TODO Auto-generated method stub
return 0;
}
public short readShort() throws IOException {
// TODO Auto-generated method stub
return 0;
}
public int readUnsignedShort() throws IOException {
// TODO Auto-generated method stub
return 0;
}
public char readChar() throws IOException {
// TODO Auto-generated method stub
return 0;
}
public int readInt() throws IOException {
// TODO Auto-generated method stub
return 0;
}
public long readLong() throws IOException {
// TODO Auto-generated method stub
return 0;
}
public float readFloat() throws IOException {
// TODO Auto-generated method stub
return 0;
}
public double readDouble() throws IOException {
// TODO Auto-generated method stub
return 0;
}
public String readLine() throws IOException {
// TODO Auto-generated method stub
return null;
}
public String readUTF() throws IOException {
// TODO Auto-generated method stub
return null;
}
public Object readObject() throws ClassNotFoundException, IOException {
// TODO Auto-generated method stub
return null;
}
@Override
public int read() throws IOException {
// TODO Auto-generated method stub
return 0;
}
}

166
src/zutil/parser/json/JSONObjectOutputStream.java Normal file
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/*******************************************************************************
* Copyright (c) 2013 Ziver
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
******************************************************************************/
package zutil.parser.json;
import zutil.log.LogUtil;
import zutil.parser.DataNode;
import java.io.*;
import java.lang.reflect.Array;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.HashMap;
import java.util.logging.Level;
import java.util.logging.Logger;
public class JSONObjectOutputStream extends OutputStream implements ObjectOutput, Closeable{
private boolean generateMetaDeta;
private HashMap<Object,Integer> objectCache;
private JSONWriter out;
public JSONObjectOutputStream(OutputStream out) {
this.generateMetaDeta = true;
this.objectCache = new HashMap<Object, Integer>();
this.out = new JSONWriter(out);
}
public void writeBoolean(boolean v) throws IOException {
out.write(new DataNode(v));
}
public void writeByte(int v) throws IOException {
// TODO:
}
public void writeShort(int v) throws IOException {
out.write(new DataNode(v));
}
public void writeChar(int v) throws IOException {
out.write(new DataNode((char)v));
}
public void writeInt(int v) throws IOException {
out.write(new DataNode(v));
}
public void writeLong(long v) throws IOException {
out.write(new DataNode(v));
}
public void writeFloat(float v) throws IOException {
out.write(new DataNode(v));
}
public void writeDouble(double v) throws IOException {
out.write(new DataNode(v));
}
public void writeBytes(String s) throws IOException {
// TODO:
}
public void writeChars(String s) throws IOException {
out.write(new DataNode(s));
}
public void writeUTF(String s) throws IOException {
out.write(new DataNode(s));
}
public void writeObject(Object obj) throws IOException{
try{
out.write(getDataNode(obj));
} catch (IllegalAccessException e) {
throw new IOException("Unable to serialize object", e);
}
}
protected DataNode getDataNode(Object obj) throws IllegalAccessException {
//if(!(obj instanceof Serializable))
// throw new UnSerializable
DataNode root = new DataNode(DataNode.DataType.Map);
// Generate meta data
if(generateMetaDeta){
root.set("@class", obj.getClass().getName());
// Cache
if(objectCache.containsKey(obj)){ // Hit
root.set("@object_id", objectCache.get(obj));
return root;
}
else{ // Miss
objectCache.put(obj, objectCache.size()+1);
root.set("@object_id", objectCache.size());
}
}
// Add all the fields to the DataNode
for(Field field : obj.getClass().getDeclaredFields()){
if((field.getModifiers() & Modifier.STATIC) == 0 &&
(field.getModifiers() & Modifier.TRANSIENT) == 0){
field.setAccessible(true);
// Add an array
if(field.getType().isArray()){
DataNode arrayNode = new DataNode(DataNode.DataType.List);
Object array = field.get(obj);
for(int i=0; i< Array.getLength(array) ;i++){
arrayNode.add(Array.get(array, i).toString());
}
root.set(field.getName(), arrayNode);
}
// Add basic type (int, float...)
else if(field.getType().isPrimitive() ||
field.getType() == String.class){
root.set(field.getName(), field.get(obj).toString());
}
else{
root.set(field.getName(), getDataNode(field.get(obj)));
}
}
}
return root;
}
@Override
public void write(int b) throws IOException {
// TODO:
}
/**
* Enable or disables the use of meta data in the JSON
* stream for class def and caching.
* Should only be disabled if the input is not a JSONObjectInputStream.
* All the meta-data tags will start with a '@'
*/
public void generateMetaDeta(boolean generate){
generateMetaDeta = generate;
}
/**
* Reset the Object stream (clears the cache)
*/
public void reset(){
objectCache.clear();
}
}

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src/zutil/test/JSONSerializerTest.java Normal file
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/*******************************************************************************
* Copyright (c) 2013 Ziver
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
******************************************************************************/
package zutil.test;
import static org.junit.Assert.assertEquals;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import org.junit.Test;
import zutil.io.StringInputStream;
import zutil.io.StringOutputStream;
import zutil.parser.json.JSONObjectInputStream;
import zutil.parser.json.JSONObjectOutputStream;
public class JSONSerializerTest{
@Test
public void testJSONObjectOutputStream() throws InterruptedException, IOException, ClassNotFoundException{
TestClass sourceObj = new TestClass();
StringOutputStream bout = new StringOutputStream();
JSONObjectOutputStream out = new JSONObjectOutputStream(bout);
out.writeObject(sourceObj);
out.flush();
out.close();
String data = bout.toString();
assertEquals(
"{\"str\": \"1234\", \"@class\": \"zutil.test.JSONSerializerTest$TestClass\", \"obj1\": {\"@class\": \"zutil.test.JSONSerializerTest$TestObj\", \"value\": \"42\", \"@object_id\": 2}, \"obj2\": {\"@class\": \"zutil.test.JSONSerializerTest$TestObj\", \"value\": \"42\", \"@object_id\": 3}, \"@object_id\": 1}",
data);
}
@Test
public void testJavaObjectInOutSerialize() throws InterruptedException, IOException, ClassNotFoundException{
TestClass sourceObj = new TestClass();
ByteArrayOutputStream bout = new ByteArrayOutputStream();
ObjectOutputStream out = new ObjectOutputStream(bout);
out.writeObject(sourceObj);
out.flush();
out.close();
byte[] data = bout.toByteArray();
ByteArrayInputStream bin = new ByteArrayInputStream(data);
ObjectInputStream in = new ObjectInputStream(bin);
TestClass targetObj = (TestClass) in.readObject();
in.close();
assertEquals( sourceObj, targetObj );
}
@Test
public void testJSONObjectInOutSerialize2() throws InterruptedException, IOException, ClassNotFoundException{
TestClass sourceObj = new TestClass();
StringOutputStream bout = new StringOutputStream();
JSONObjectOutputStream out = new JSONObjectOutputStream(bout);
out.writeObject(sourceObj);
out.flush();
out.close();
String data = bout.toString();
StringInputStream bin = new StringInputStream(data);
JSONObjectInputStream in = new JSONObjectInputStream(bin);
TestClass targetObj = (TestClass) in.readObject();
in.close();
assertEquals( sourceObj, targetObj );
}
public static class TestClass implements Serializable{
private static final long serialVersionUID = 1L;
String str = "1234";
TestObj obj1 = new TestObj();
TestObj obj2 = new TestObj();
public boolean equals(Object obj){
return obj instanceof TestClass &&
this.str.equals(((TestClass)obj).str) &&
this.obj1.equals(((TestClass)obj).obj1) &&
this.obj2.equals(((TestClass)obj).obj2);
}
}
public static class TestObj implements Serializable{
private static final long serialVersionUID = 1L;
int value = 42;
public boolean equals(Object obj){
return obj instanceof TestObj && this.value == ((TestObj)obj).value;
}
}
}