org.milyn.cdr.xpath.evaluators

Class XPathExpressionEvaluator

java.lang.Object

org.milyn.cdr.xpath.evaluators.XPathExpressionEvaluator

Direct Known Subclasses:

AbstractEqualityEvaluator, AbstractLogicalEvaluator, IndexEvaluator, PassThruEvaluator, PredicatesEvaluator

public abstract class XPathExpressionEvaluator
extends Object

Jaxen XPath expression evaluator.

Author:

tom.fennelly@jboss.com

Constructor Summary

Constructors

Constructor and Description
XPathExpressionEvaluator()

Method Summary

Modifier and Type	Method and Description
abstract boolean	evaluate(Element element, ExecutionContext executionContext) Does this XPath expression evaluate for the supplied Element context object.
abstract boolean	evaluate(SAXElement element, ExecutionContext executionContext) Does this XPath expression evaluate for the supplied SAXElement context object.
static XPathExpressionEvaluator	getInstance(org.jaxen.expr.Expr expr, SelectorStep selectorStep, Properties namespaces) XPathExpressionEvaluator factory method.

Methods inherited from class java.lang.Object

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

Constructor Detail

XPathExpressionEvaluator

public XPathExpressionEvaluator()

Method Detail

evaluate

public abstract boolean evaluate(SAXElement element,
                                 ExecutionContext executionContext)

Does this XPath expression evaluate for the supplied SAXElement context object.

The implementation can update the context to a parent element if the expression targets multiple contexts.

Parameters:

element - The SAXElement context to be evaluated against.

executionContext - Smooks ExecutionContext.

Returns:

True if the expression evaluates, otherwise false.

evaluate

public abstract boolean evaluate(Element element,
                                 ExecutionContext executionContext)

Does this XPath expression evaluate for the supplied Element context object.

The implementation can update the context to a parent element if the expression targets multiple contexts.

Parameters:

element - The Element context to be evaluated against.

executionContext - Smooks ExecutionContext.

Returns:

True if the expression evaluates, otherwise false.

getInstance

public static XPathExpressionEvaluator getInstance(org.jaxen.expr.Expr expr,
                                                   SelectorStep selectorStep,
                                                   Properties namespaces)
                                            throws org.jaxen.saxpath.SAXPathException

XPathExpressionEvaluator factory method.

Parameters:

expr - Jaxen XPath expression.

selectorStep - Selector Step.

namespaces - Namespace set.

Returns:

The XPathExpressionEvaluator for the Jaxen expression.

Throws:

org.jaxen.saxpath.SAXPathException