org.dom4j.rule
Interface Pattern

All Superinterfaces:

NodeFilter

All Known Implementing Classes:

DefaultPattern, NodeTypePattern, XPathPattern

public interface Pattern

extends NodeFilter

Pattern defines the behaviour for pattern in the XSLT processing model.

Version:

$Revision: 1.6 $

Author:

James Strachan

ANY_NODE

public static final short ANY_NODE

Matches any node

See Also:

Constant Field Values

NONE

public static final short NONE

Matches no nodes

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Constant Field Values

NUMBER_OF_TYPES

public static final short NUMBER_OF_TYPES

Count of the number of node types

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Constant Field Values

DEFAULT_PRIORITY

public static final double DEFAULT_PRIORITY

According to the spec we should return 0.5 if we cannot determine the priority

See Also:

Constant Field Values

matches

public boolean matches(Node node)

DOCUMENT ME!

Specified by:

matches in interface NodeFilter

Parameters:

node - DOCUMENT ME!

Returns:

true if the pattern matches the given DOM4J node.

getPriority

public double getPriority()

Returns the default resolution policy of the pattern according to the XSLT conflict resolution spec .

Returns:

DOCUMENT ME!

getUnionPatterns

public Pattern[] getUnionPatterns()

If this pattern is a union pattern then this method should return an array of patterns which describe the union pattern, which should contain more than one pattern. Otherwise this method should return null.

Returns:

an array of the patterns which make up this union pattern or null if this pattern is not a union pattern

getMatchType

public short getMatchType()

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Returns:

the type of node the pattern matches which by default should return ANY_NODE if it can match any kind of node.

getMatchesNodeName

public String getMatchesNodeName()

For patterns which only match an ATTRIBUTE_NODE or an ELEMENT_NODE then this pattern may return the name of the element or attribute it matches. This allows a more efficient rule matching algorithm to be performed, rather than a brute force approach of evaluating every pattern for a given Node.

Returns:

the name of the element or attribute this pattern matches or null if this pattern matches any or more than one name.