net.sourceforge.pmd.lang.rule.xpath
Class JaxenXPathRuleQuery

java.lang.Object
  net.sourceforge.pmd.lang.rule.xpath.AbstractXPathRuleQuery
      net.sourceforge.pmd.lang.rule.xpath.JaxenXPathRuleQuery

All Implemented Interfaces:

XPathRuleQuery

public class JaxenXPathRuleQuery
extends AbstractXPathRuleQuery

This is a Jaxen based XPathRule query.

Field Summary

Fields inherited from class net.sourceforge.pmd.lang.rule.xpath.AbstractXPathRuleQuery

properties, ruleChainVisits, version, xpath

Fields inherited from interface net.sourceforge.pmd.lang.rule.xpath.XPathRuleQuery

XPATH_1_0, XPATH_1_0_COMPATIBILITY, XPATH_2_0

Constructor Summary

JaxenXPathRuleQuery()

Method Summary

List<Node>	evaluate(Node node, RuleContext data) Evaluate the XPath query against the given Node.
List<String>	getRuleChainVisits() Indicates which AST Nodes (if any) should be used with the RuleChain.
boolean	isSupportedVersion(String version) Subclasses should implement to indicate whether an XPath version is supported.

Methods inherited from class net.sourceforge.pmd.lang.rule.xpath.AbstractXPathRuleQuery

setProperties, setVersion, setXPath

Methods inherited from class java.lang.Object

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

Constructor Detail

JaxenXPathRuleQuery

public JaxenXPathRuleQuery()

Method Detail

isSupportedVersion

public boolean isSupportedVersion(String version)

Subclasses should implement to indicate whether an XPath version is supported.

Specified by:

isSupportedVersion in class AbstractXPathRuleQuery

Parameters:

version - The XPath version.

Returns:

true if the XPath version is supported, false otherwise.

evaluate

public List<Node> evaluate(Node node,
                           RuleContext data)

Evaluate the XPath query against the given Node.

Specified by:

evaluate in interface XPathRuleQuery

Specified by:

evaluate in class AbstractXPathRuleQuery

Parameters:

node - The Node.

data - The RuleContext.

Returns:

The matching Nodes.

getRuleChainVisits

public List<String> getRuleChainVisits()

Indicates which AST Nodes (if any) should be used with the RuleChain. Use of the RuleChain will allow the query execute on a targed sub-tree of the AST, instead of the entire AST from the root. This can result in great performance benefits.

Specified by:

getRuleChainVisits in interface XPathRuleQuery

Overrides:

getRuleChainVisits in class AbstractXPathRuleQuery