com.plumtree.portalpages.rest.utils
Class JSONParser

java.lang.Object
  com.plumtree.portalpages.rest.utils.JSONParser

All Implemented Interfaces:

IJSONParser

public class JSONParser
extends java.lang.Object
implements IJSONParser

This JSON parser handles simple objects only. It is very limited, and does not handle arrays, or non-string object types. It also only handles escaped quotes and slashes, and only allows double quotes around values, not single quotes.

Field Summary

protected static char	CLOSE_CURLY_BRACKET
protected static char	COMMA
protected static char	ESCAPE
protected java.lang.String	m_strObjectName
protected XPHashtable	m_xpMembers
protected static char	OPEN_CURLY_BRACKET
protected static char	QUOTE
protected static char	SEMI_COLON

Method Summary

java.lang.String	GetEscapedTokenAndEndQuote(XPStringTokenizer _tokenizer) This gets an escaped quoted sequence, starting immediately after the opening quote.
static IJSONParser	GetInstance()
java.lang.String	GetMember(java.lang.String _strName)
java.lang.String	GetObjectName()
java.lang.String	GetToken(XPStringTokenizer _tokenizer)
boolean	IsWhiteSpace(java.lang.String _strToken) Checks if a token is a single piece of whitespace.
void	ParseJSONObject(java.lang.String _strJSON) Parses the supplied JSON object.
void	SkipToken(XPStringTokenizer _tokenizer, char _token) Skip the next token if it matches the expected token.

Methods inherited from class java.lang.Object

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

Field Detail

OPEN_CURLY_BRACKET

protected static final char OPEN_CURLY_BRACKET

See Also:

Constant Field Values

CLOSE_CURLY_BRACKET

protected static final char CLOSE_CURLY_BRACKET

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Constant Field Values

QUOTE

protected static final char QUOTE

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Constant Field Values

SEMI_COLON

protected static final char SEMI_COLON

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Constant Field Values

COMMA

protected static final char COMMA

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Constant Field Values

ESCAPE

protected static final char ESCAPE

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Constant Field Values

m_strObjectName

protected java.lang.String m_strObjectName

m_xpMembers

protected XPHashtable m_xpMembers

Method Detail

GetInstance

public static IJSONParser GetInstance()

Returns:

an instance of a IJSONParser.

ParseJSONObject

public void ParseJSONObject(java.lang.String _strJSON)

Description copied from interface: IJSONParser

Parses the supplied JSON object.

Specified by:

ParseJSONObject in interface IJSONParser

Parameters:

_strJSON - the JSON string to be parsed.

GetToken

public java.lang.String GetToken(XPStringTokenizer _tokenizer)

Parameters:

_tokenizer - the JSON tokenizer

Returns:

the next token without whitespace.

SkipToken

public void SkipToken(XPStringTokenizer _tokenizer,
                      char _token)

Skip the next token if it matches the expected token.

Parameters:

_tokenizer - the JSON tokenizer

_token - the expected token

Throws:

XPFormatException - if the next token doesn't match the expected token.

IsWhiteSpace

public boolean IsWhiteSpace(java.lang.String _strToken)

Checks if a token is a single piece of whitespace.

Parameters:

_strToken -

Returns:

boolean true means that the token is whitespace.

GetEscapedTokenAndEndQuote

public java.lang.String GetEscapedTokenAndEndQuote(XPStringTokenizer _tokenizer)

This gets an escaped quoted sequence, starting immediately after the opening quote. It reads the end quote, but does not return it.

Parameters:

_tokenizer -

Returns:

the escaped string token. The closing quote has been read.

Throws:

XPFormatException

GetObjectName

public java.lang.String GetObjectName()

Specified by:

GetObjectName in interface IJSONParser

Returns:

the top-level JSON object name.

GetMember

public java.lang.String GetMember(java.lang.String _strName)

Specified by:

GetMember in interface IJSONParser

Parameters:

_strName - The key for the JSON member to be returned.

Returns:

the requested JSON member value.