Package net.sf.saxon.ma.json

Class JsonHandler

java.lang.Object

net.sf.saxon.ma.json.JsonHandler

Direct Known Subclasses:

JsonHandlerMap, JsonHandlerXML

public class JsonHandler
extends java.lang.Object

Default handler class for accepting the result from parsing JSON strings

Field Summary

Fields

Modifier and Type	Field	Description
protected IntPredicateProxy	charChecker
boolean	escape

Constructor Summary

Constructors

Constructor	Description
JsonHandler()

Method Summary

Modifier and Type	Method	Description
void	endArray()	Close the current array
void	endMap()	Close the current object/map
XPathContext	getContext()
Sequence	getResult()
protected void	handleInvalidCharacters(java.lang.StringBuilder buffer)	Deal with invalid characters in the JSON string
protected void	markAsEscaped(java.lang.String escaped, boolean isKey)
java.lang.String	reEscape(java.lang.String val)	Optionally apply escaping or unescaping to a value.
void	setContext(XPathContext context)
void	setFallbackFunction(java.util.Map<java.lang.String,Sequence> options, XPathContext context)
boolean	setKey(java.lang.String unEscaped, java.lang.String reEscaped)	Set the key to be written for the next entry in an object/map
void	startArray()	Open a new array
void	startMap()	Start a new object/map
void	writeBoolean(boolean value)	Write a boolean value
void	writeNull()	Write a null value
void	writeNumeric(java.lang.String asString, AtomicValue parsedValue)	Write a numeric value
void	writeString(java.lang.String val)	Write a string value

Methods inherited from class java.lang.Object

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

Field Detail

escape

public boolean escape

charChecker

protected IntPredicateProxy charChecker

Constructor Detail

JsonHandler

public JsonHandler()

Method Detail

setContext

public void setContext(XPathContext context)

getContext

public XPathContext getContext()

getResult

public Sequence getResult()
                   throws XPathException

Throws:

XPathException

setKey

public boolean setKey(java.lang.String unEscaped,
                      java.lang.String reEscaped)

Set the key to be written for the next entry in an object/map

Parameters:

unEscaped - the key for the entry (null implies no key) in unescaped form (backslashes, if present, do not signal an escape sequence)

reEscaped - the key for the entry (null implies no key) in reescaped form. In this form special characters are represented as backslash-escaped sequences if the escape option is yes; if escape=no, the reEscaped form is the same as the unEscaped form.

Returns:

true if the key is already present in the map, false if it is not

startArray

public void startArray()
                throws XPathException

Open a new array

Throws:

XPathException - if any error occurs

endArray

public void endArray()
              throws XPathException

Close the current array

Throws:

XPathException - if any error occurs

startMap

public void startMap()
              throws XPathException

Start a new object/map

Throws:

XPathException - if any error occurs

endMap

public void endMap()
            throws XPathException

Close the current object/map

Throws:

XPathException - if any error occurs

writeNumeric

public void writeNumeric(java.lang.String asString,
                         AtomicValue parsedValue)
                  throws XPathException

Write a numeric value

Parameters:

asString - the raw string representation of the value

parsedValue - the parsed representation of the value, typically an xs:double, but under user control

Throws:

XPathException - if any error occurs

writeString

public void writeString(java.lang.String val)
                 throws XPathException

Write a string value

Parameters:

val - The string to be written (which may or may not contain JSON escape sequences, according to the options that were set)

Throws:

XPathException - if any error occurs

reEscape

public java.lang.String reEscape(java.lang.String val)
                          throws XPathException

Optionally apply escaping or unescaping to a value.

Parameters:

val - the string to be escaped or unEscaped. This is supplied as a String rather than a UnicodeString because there are special rules for handling unpaired surrogates, which cannot be represented in a UnicodeString

Returns:

the escaped or unescaped string

Throws:

XPathException - if there are invalid characters or escape sequences

writeBoolean

public void writeBoolean(boolean value)
                  throws XPathException

Write a boolean value

Parameters:

value - the boolean value to be written

Throws:

XPathException - if any error occurs

writeNull

public void writeNull()
               throws XPathException

Write a null value

Throws:

XPathException - if any error occurs

handleInvalidCharacters

protected void handleInvalidCharacters(java.lang.StringBuilder buffer)
                                throws XPathException

Deal with invalid characters in the JSON string

Parameters:

buffer - the JSON string

Throws:

XPathException - if any error occurs

markAsEscaped

protected void markAsEscaped(java.lang.String escaped,
                             boolean isKey)
                      throws XPathException

Throws:

XPathException

setFallbackFunction

public void setFallbackFunction(java.util.Map<java.lang.String,Sequence> options,
                                XPathContext context)
                         throws XPathException

Throws:

XPathException