org.eclipse.tptp.platform.provisional.jre14.fastxpath
Class EExpression

java.lang.Object
  org.eclipse.tptp.platform.provisional.jre14.fastxpath.EExpression

All Implemented Interfaces:

IExpression

Direct Known Subclasses:

EFunction, ENodeTest, EOperation, EUnaryOperation, EVariable, EXObject

public class EExpression

extends java.lang.Object

implements IExpression

Root object of the xpath expression hierarchy. since FastXPath uses Xalan as its xpath parser, we have a parallel hierarchy of expression. EExpression is the root node of our hirarchy. Each node of this parallel hierachy acts as a delegate to the equivalent node of the xpath parser. Irrelevent methods have been ommited since most of them are for processing xpath expressions on native xml and do not help in processing xpath on XML <->Java Binding Objects. Every relevent instance of Expression has an equivalent EExpression

Constructor Summary

EExpression()

Method Summary

void	compile(ICompilerContext compilationContext)
java.lang.Object[]	execute(FastXPathContext context)
java.lang.String	getAxis(int axis) Fix for IBM JRE 1.5
IExpression	getParent()
java.lang.String	indent(int indent)
IExpression	instance(org.apache.xpath.Expression e)
void	linkParent(IExpression newParent)
void	printGraph(int level)
void	setParent(IExpression parent)

Methods inherited from class java.lang.Object

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

Constructor Detail

EExpression

public EExpression()

Method Detail

instance

public IExpression instance(org.apache.xpath.Expression e)

Parameters:

e -

Returns:

an E-Wrapper for e

execute

public java.lang.Object[] execute(FastXPathContext context)
                           throws javax.xml.transform.TransformerException,
                                  ExpressionEvaluationException

Specified by:

execute in interface IExpression

Parameters:

context -

Returns:

Throws:

javax.xml.transform.TransformerException

ExpressionEvaluationException

printGraph

public void printGraph(int level)

Specified by:

printGraph in interface IExpression

Parameters:

level -

indent

public java.lang.String indent(int indent)

Specified by:

indent in interface IExpression

Parameters:

indent -

Returns:

correct indentation for printing the expression tree

linkParent

public void linkParent(IExpression newParent)

Specified by:

linkParent in interface IExpression

Parameters:

newParent -

compile

public void compile(ICompilerContext compilationContext)
             throws CodeGenerationError

Specified by:

compile in interface IExpression

Parameters:

compilationContext -

Throws:

CodeGenerationError

getParent

public IExpression getParent()

Specified by:

getParent in interface IExpression

Returns:

Returns the parent.

setParent

public void setParent(IExpression parent)

Specified by:

setParent in interface IExpression

Parameters:

parent - The parent to set.

getAxis

public java.lang.String getAxis(int axis)

Fix for IBM JRE 1.5

Parameters:

axis -

Returns: