jlibs.xml.sax.dog.expr

Class Literal

java.lang.Object

jlibs.xml.sax.dog.expr.Expression

jlibs.xml.sax.dog.expr.Literal

public final class Literal
extends Expression

Literal Expression knows its result statically. Note the result of any type is supported. All non-literal global expressions are simplified to literal expressions

Author:

Santhosh Kumar T

Field Summary

Fields inherited from class jlibs.xml.sax.dog.expr.Expression

id, resultType, scope, storeResult, xpath

Constructor Summary

Constructors

Constructor and Description
Literal(Object literal, DataType dataType)

Method Summary

Modifier and Type	Method and Description
Object	getResult() This method is called only glocal scope expression
Object	getResult(Event event) This method is called only non-glocal scope expression.
void	rawResultRequired()
Expression	simplify() returns simplified expression which peforms better.
String	toString()

Methods inherited from class jlibs.xml.sax.dog.expr.Expression

getXPath, scope, setXPath

Methods inherited from class java.lang.Object

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

Constructor Detail

Literal

public Literal(Object literal,
               DataType dataType)

Method Detail

rawResultRequired

public void rawResultRequired()

getResult

public Object getResult()

Description copied from class: Expression

This method is called only glocal scope expression

Specified by:

getResult in class Expression

getResult

public Object getResult(Event event)

Description copied from class: Expression

This method is called only non-glocal scope expression. it can return the result if it is possible, otherwize returns Evaluation object.

Specified by:

getResult in class Expression

simplify

public Expression simplify()

Description copied from class: Expression

returns simplified expression which peforms better. if no simpliciation possible it simply returns current expression. default implementation promotes global-scoped expressions to literal

Overrides:

simplify in class Expression

toString

public String toString()

Overrides:

toString in class Object