org.apache.jackrabbit.commons.predicate
Class DepthPredicate

java.lang.Object
  org.apache.jackrabbit.commons.predicate.DepthPredicate

All Implemented Interfaces:

Predicate

Direct Known Subclasses:

DeclaringTypePredicate, IsMandatoryPredicate, IsNodePredicate, NamePredicate, NodeTypePredicate

public class DepthPredicate
extends Object
implements Predicate

Implements a filter that filters item according to their (passed) depth.

Field Summary

protected int	maxDepth The maximal depth
protected int	minDepth The minimal depth

Fields inherited from interface org.apache.jackrabbit.commons.predicate.Predicate

FALSE, TRUE

Constructor Summary

DepthPredicate(int minDepth, int maxDepth)
Creates a new depth filter for the given depths.

Method Summary

boolean	evaluate(Object item) Matches if the given depth is greater or equal the minimum depth and less or equal the maximum depth and if the call to matches(Item) returns true.
protected boolean	matches(Item item) Returns true.

Methods inherited from class java.lang.Object

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

Field Detail

minDepth

protected final int minDepth

The minimal depth

maxDepth

protected final int maxDepth

The maximal depth

Constructor Detail

DepthPredicate

public DepthPredicate(int minDepth,
                      int maxDepth)

Creates a new depth filter for the given depths.

Parameters:

minDepth - the minimal depth

maxDepth - the maximal depth

Method Detail

evaluate

public boolean evaluate(Object item)

Matches if the given depth is greater or equal the minimum depth and less or equal the maximum depth and if the call to matches(Item) returns true.

Specified by:

evaluate in interface Predicate

Parameters:

item - some object

Returns:

predicate result

See Also:

Predicate.evaluate(java.lang.Object)

matches

protected boolean matches(Item item)
                   throws RepositoryException

Returns true. Subclasses can override to implement something useful that is dependant of the depth.

Parameters:

item - the item to match

Returns:

true if the item matches; false otherwise.

Throws:

RepositoryException - if an error occurs.