/* | |
* Copyright 1999-2011 Alibaba Group. | |
* | |
* 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.alibaba.dubbo.common.json; | |
import java.io.IOException; | |
import java.util.ArrayList; | |
import java.util.Collection; | |
import java.util.List; | |
/** | |
* JSONArray. | |
* | |
* @author qian.lei | |
*/ | |
public class JSONArray implements JSONNode | |
{ | |
private List<Object> mArray = new ArrayList<Object>(); | |
/** | |
* get. | |
* | |
* @param index index. | |
* @return boolean or long or double or String or JSONArray or JSONObject or null. | |
*/ | |
public Object get(int index) | |
{ | |
return mArray.get(index); | |
} | |
/** | |
* get boolean value. | |
* | |
* @param index index. | |
* @param def default value. | |
* @return value or default value. | |
*/ | |
public boolean getBoolean(int index, boolean def) | |
{ | |
Object tmp = mArray.get(index); | |
return tmp != null && tmp instanceof Boolean ? ((Boolean)tmp).booleanValue() : def; | |
} | |
/** | |
* get int value. | |
* | |
* @param index index. | |
* @param def default value. | |
* @return value or default value. | |
*/ | |
public int getInt(int index, int def) | |
{ | |
Object tmp = mArray.get(index); | |
return tmp != null && tmp instanceof Number ? ((Number)tmp).intValue() : def; | |
} | |
/** | |
* get long value. | |
* | |
* @param index index. | |
* @param def default value. | |
* @return value or default value. | |
*/ | |
public long getLong(int index, long def) | |
{ | |
Object tmp = mArray.get(index); | |
return tmp != null && tmp instanceof Number ? ((Number)tmp).longValue() : def; | |
} | |
/** | |
* get float value. | |
* | |
* @param index index. | |
* @param def default value. | |
* @return value or default value. | |
*/ | |
public float getFloat(int index, float def) | |
{ | |
Object tmp = mArray.get(index); | |
return tmp != null && tmp instanceof Number ? ((Number)tmp).floatValue() : def; | |
} | |
/** | |
* get double value. | |
* | |
* @param index index. | |
* @param def default value. | |
* @return value or default value. | |
*/ | |
public double getDouble(int index, double def) | |
{ | |
Object tmp = mArray.get(index); | |
return tmp != null && tmp instanceof Number ? ((Number)tmp).doubleValue() : def; | |
} | |
/** | |
* get string value. | |
* | |
* @param index index. | |
* @return value or default value. | |
*/ | |
public String getString(int index) | |
{ | |
Object tmp = mArray.get(index); | |
return tmp == null ? null : tmp.toString(); | |
} | |
/** | |
* get JSONArray value. | |
* | |
* @param index index. | |
* @return value or default value. | |
*/ | |
public JSONArray getArray(int index) | |
{ | |
Object tmp = mArray.get(index); | |
return tmp == null ? null : tmp instanceof JSONArray ? (JSONArray)tmp : null; | |
} | |
/** | |
* get JSONObject value. | |
* | |
* @param index index. | |
* @return value or default value. | |
*/ | |
public JSONObject getObject(int index) | |
{ | |
Object tmp = mArray.get(index); | |
return tmp == null ? null : tmp instanceof JSONObject ? (JSONObject)tmp : null; | |
} | |
/** | |
* get array length. | |
* | |
* @return length. | |
*/ | |
public int length() | |
{ | |
return mArray.size(); | |
} | |
/** | |
* add item. | |
*/ | |
public void add(Object ele) | |
{ | |
mArray.add(ele); | |
} | |
/** | |
* add items. | |
*/ | |
public void addAll(Object[] eles) | |
{ | |
for( Object ele : eles ) | |
mArray.add(ele); | |
} | |
/** | |
* add items. | |
*/ | |
public void addAll(Collection<?> c) | |
{ | |
mArray.addAll(c); | |
} | |
/** | |
* write json. | |
* | |
* @param jc json converter | |
* @param jb json builder. | |
*/ | |
public void writeJSON(JSONConverter jc, JSONWriter jb, boolean writeClass) throws IOException | |
{ | |
jb.arrayBegin(); | |
for( Object item : mArray ) | |
{ | |
if( item == null ) | |
jb.valueNull(); | |
else | |
jc.writeValue(item, jb, writeClass); | |
} | |
jb.arrayEnd(); | |
} | |
} |