org.apache.wicket.ajax.json
Class XML

java.lang.Object
  org.apache.wicket.ajax.json.XML

public class XML
extends Object

This provides static methods to convert an XML text into a JSONObject, and to covert a JSONObject into an XML text.

Version:

2011-02-11

Author:

JSON.org

Field Summary

static Character	AMP The Character '&'.
static Character	APOS The Character '''.
static Character	BANG The Character '!'.
static Character	EQ The Character '='.
static Character	GT The Character '>'.
static Character	LT The Character '<'.
static Character	QUEST The Character '?'.
static Character	QUOT The Character '"'.
static Character	SLASH The Character '/'.

Constructor Summary

XML()

Method Summary

static String	escape(String string) Replace special characters with XML escapes:
static void	noSpace(String string) Throw an exception if the string contains whitespace.
static Object	stringToValue(String string) Try to convert a string into a number, boolean, or null.
static JSONObject	toJSONObject(String string) Convert a well-formed (but not necessarily valid) XML string into a JSONObject.
static String	toString(Object object) Convert a JSONObject into a well-formed, element-normal XML string.
static String	toString(Object object, String tagName) Convert a JSONObject into a well-formed, element-normal XML string.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

AMP

public static final Character AMP

The Character '&'.

APOS

public static final Character APOS

The Character '''.

BANG

public static final Character BANG

The Character '!'.

EQ

public static final Character EQ

The Character '='.

GT

public static final Character GT

The Character '>'.

LT

public static final Character LT

The Character '<'.

QUEST

public static final Character QUEST

The Character '?'.

QUOT

public static final Character QUOT

The Character '"'.

SLASH

public static final Character SLASH

The Character '/'.

Constructor Detail

XML

public XML()

Method Detail

escape

public static String escape(String string)

Replace special characters with XML escapes:

 & (ampersand) is replaced by &
 < (less than) is replaced by &lt;
 > (greater than) is replaced by &gt;
 " (double quote) is replaced by &quot;
 

Parameters:

string - The string to be escaped.

Returns:

The escaped string.

noSpace

public static void noSpace(String string)
                    throws JSONException

Throw an exception if the string contains whitespace. Whitespace is not allowed in tagNames and attributes.

Parameters:

string -

Throws:

JSONException

stringToValue

public static Object stringToValue(String string)

Try to convert a string into a number, boolean, or null. If the string can't be converted, return the string. This is much less ambitious than JSONObject.stringToValue, especially because it does not attempt to convert plus forms, octal forms, hex forms, or E forms lacking decimal points.

Parameters:

string - A String.

Returns:

A simple JSON value.

toJSONObject

public static JSONObject toJSONObject(String string)
                               throws JSONException

Convert a well-formed (but not necessarily valid) XML string into a JSONObject. Some information may be lost in this transformation because JSON is a data format and XML is a document format. XML uses elements, attributes, and content text, while JSON uses unordered collections of name/value pairs and arrays of values. JSON does not does not like to distinguish between elements and attributes. Sequences of similar elements are represented as JSONArrays. Content text may be placed in a "content" member. Comments, prologs, DTDs, and <[ [ ]]> are ignored.

Parameters:

string - The source string.

Returns:

A JSONObject containing the structured data from the XML string.

Throws:

JSONException

toString

public static String toString(Object object)
                       throws JSONException

Convert a JSONObject into a well-formed, element-normal XML string.

Parameters:

object - A JSONObject.

Returns:

A string.

Throws:

JSONException

toString

public static String toString(Object object,
                              String tagName)
                       throws JSONException

Convert a JSONObject into a well-formed, element-normal XML string.

Parameters:

object - A JSONObject.

tagName - The optional name of the enclosing tag.

Returns:

A string.

Throws:

JSONException