org.wamblee.xml

Class XPathExpression

java.lang.Object

org.wamblee.xml.XPathExpression

public class XPathExpression
extends Object

XPath expression.

Author:

Erik Brakkee

Constructor Summary

Constructors

Constructor and Description
XPathExpression(XPath aXpath, String aExpression) Constructs the expression.

Method Summary

Modifier and Type	Method and Description
boolean	booleanEval(XMLDocument aDocument) Evaluates the xpath expression to a boolean.
XPathExpression	getExpression()
String	getExpressionString()
Node	nodeEval(XMLDocument aDocument) Evaluates the xpath expression to a Node.
NodeList	nodelistEval(XMLDocument aDocument) Evaluates the xpath expression to a node list.
Double	numberEval(XMLDocument aDocument) Evaluates the xpath expression to a number.
String	stringEval(XMLDocument aDocument) Evaluates the xpath expression to a string.

Methods inherited from class java.lang.Object

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

Constructor Detail

XPathExpression

public XPathExpression(XPath aXpath,
                       String aExpression)
                throws XMLException

Constructs the expression. Users typically use XPathContext.createExpression(String) instead of this constructor.

Parameters:

aXpath - Xpath interface.

aExpression - Expression.

Throws:

XMLException - In case of problems.

Method Detail

stringEval

public String stringEval(XMLDocument aDocument)
                  throws XMLException

Evaluates the xpath expression to a string.

Parameters:

aDocument - Document

Returns:

Value.

Throws:

XMLException - In case of problems.

booleanEval

public boolean booleanEval(XMLDocument aDocument)
                    throws XMLException

Evaluates the xpath expression to a boolean.

Parameters:

aDocument - Document

Returns:

Value.

Throws:

XMLException - In case of problems.

nodelistEval

public NodeList nodelistEval(XMLDocument aDocument)
                      throws XMLException

Evaluates the xpath expression to a node list.

Parameters:

aDocument - Document

Returns:

Value.

Throws:

XMLException - In case of problems.

nodeEval

public Node nodeEval(XMLDocument aDocument)
              throws XMLException

Evaluates the xpath expression to a Node.

Parameters:

aDocument - Document

Returns:

Value.

Throws:

XMLException - In case of problems.

numberEval

public Double numberEval(XMLDocument aDocument)
                  throws XMLException

Evaluates the xpath expression to a number.

Parameters:

aDocument - Document

Returns:

Value.

Throws:

XMLException - In case of problems.

getExpression

public XPathExpression getExpression()

Returns:

Low-level xpath expression object.

getExpressionString

public String getExpressionString()

Returns:

XPath expression.