org.apache.tika.sax.xpath
Class Matcher

java.lang.Object
  extended by org.apache.tika.sax.xpath.Matcher
Direct Known Subclasses:
AttributeMatcher, ChildMatcher, CompositeMatcher, ElementMatcher, NamedAttributeMatcher, NodeMatcher, SubtreeMatcher, TextMatcher

public class Matcher
extends Object

XPath element matcher. A matcher instance encapsulates a specific state in XPath evaluation.


Field Summary
static Matcher FAIL
          State of a failed XPath evaluation, where nothing is matched.
 
Constructor Summary
Matcher()
           
 
Method Summary
 Matcher descend(String namespace, String name)
          Returns the XPath evaluation state that results from descending to a child element with the given name.
 boolean matchesAttribute(String namespace, String name)
          Returns true if the XPath expression matches the named attribute of the element associated with this evaluation state.
 boolean matchesElement()
          Returns true if the XPath expression matches the element associated with this evaluation state.
 boolean matchesText()
          Returns true if the XPath expression matches all text nodes whose parent is the element associated with this evaluation state.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

FAIL

public static final Matcher FAIL
State of a failed XPath evaluation, where nothing is matched. This matcher instance is used as a sentinel object whenever an XPath evaluation branch fails.

Constructor Detail

Matcher

public Matcher()
Method Detail

descend

public Matcher descend(String namespace,
                       String name)
Returns the XPath evaluation state that results from descending to a child element with the given name.

Parameters:
namespace - element namespace or null
name - element name
Returns:
next XPath evaluation state

matchesElement

public boolean matchesElement()
Returns true if the XPath expression matches the element associated with this evaluation state.

Returns:
XPath evaluation state for this element

matchesAttribute

public boolean matchesAttribute(String namespace,
                                String name)
Returns true if the XPath expression matches the named attribute of the element associated with this evaluation state.

Parameters:
namespace - attribute namespace or null
name - attribute name
Returns:
XPath evaluation state for named attribute of this element

matchesText

public boolean matchesText()
Returns true if the XPath expression matches all text nodes whose parent is the element associated with this evaluation state.

Returns:
XPath evaluation state for text children of this element


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