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package javaxt.json;

//******************************************************************************

//** JSONValue Class

//******************************************************************************

/**

* Used to represent a value associated with a key in a JSONObject or an

* entry in a JSONArray. The value can be converted into a number of Java

* primitives (strings, integers, doubles, booleans, etc).

*

******************************************************************************/

public class JSONValue extends javaxt.utils.Value {

//**************************************************************************

//** Constructor

//**************************************************************************

/** Creates a new instance of this class.

*/

public JSONValue(Object value){

super(value);

}

//**************************************************************************

//** toString

//**************************************************************************

/** Returns the value as a string. Returns null if the string is null or

* empty or if there was a problem converting the value to a string.

*/

public String toString(){

String str = super.toString();

if (str!=null){

if (str.trim().length()==0) return null;

}

return str;

}

//**************************************************************************

//** toJSONObject

//**************************************************************************

/** Returns the value as a JSONObject. Returns a null if there was a problem

* converting the value to an JSONObject or if the value is null.

*/

public JSONObject toJSONObject(){

Object obj = super.toObject();

if (obj!=null){

if (obj instanceof JSONObject) {

return (JSONObject) obj;

}

else if (obj instanceof javaxt.sql.Model){

return ((javaxt.sql.Model) obj).toJson();

}

}

return null;

}

//**************************************************************************

//** toJSONArray

//**************************************************************************

/** Returns the value as a JSONArray. Returns a null if there was a problem

* converting the value to an JSONArray or if the value is null.

*/

public JSONArray toJSONArray(){

Object obj = super.toObject();

if (obj!=null){

if (obj instanceof JSONArray) {

return (JSONArray) obj;

}

}

return null;

}

//**************************************************************************

//** get

//**************************************************************************

/** Returns the value associated with an index in a JSONArray, assuming the

* underlying object represented by this class is a JSONArray. This is

* shorthand for value.toJSONArray().get(i);

*/

public JSONValue get(int i){

Object obj = super.toObject();

if (obj!=null){

if (obj instanceof JSONArray) {

return ((JSONArray) obj).get(i);

}

}

return new JSONValue(null);

}

//**************************************************************************

//** get

//**************************************************************************

/** Returns the value associated with a key in a JSONObject, assuming the

* underlying object represented by this class is a JSONObject. This is

* shorthand for value.toJSONObject().get(key);

*/

public JSONValue get(String key) {

if (key == null) return new JSONValue(null);

Object obj = super.toObject();

if (obj!=null){

if (obj instanceof JSONObject) {

return ((JSONObject) obj).get(key);

}

}

return new JSONValue(null);

}

}