Package org.apache.tika.sax.xpath

Class Matcher

java.lang.Object

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

Fields

Modifier and Type	Field	Description
static Matcher	FAIL	State of a failed XPath evaluation, where nothing is matched.

Constructor Summary

Constructors

Constructor	Description
Matcher()

Method Summary

Modifier and Type	Method	Description
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