org.htmlparser.filters
Class XorFilter

java.lang.Object
  org.htmlparser.filters.XorFilter

All Implemented Interfaces:

Serializable, Cloneable, NodeFilter

public class XorFilter
extends Object
implements NodeFilter

Accepts nodes matching an odd number of its predicates filters (XOR operation). For example, where it has two filters, it accepts only if and only if one of the two filters accepts the Node, but does not accept if both filters accept the Node.

See Also:

Serialized Form

Field Summary

protected NodeFilter[]

mPredicates The predicates that are to be xor'ed together;

Constructor Summary

XorFilter()
Creates a new instance of an XorFilter.

XorFilter(NodeFilter[] predicates)
Creates an XorFilter that accepts nodes acceptable an odd number of the given filters.

XorFilter(NodeFilter left, NodeFilter right)
Creates an XorFilter that accepts nodes acceptable to either filter, but not both.

Method Summary

boolean	accept(Node node) Accept nodes that are acceptable to an odd number of its predicate filters.
NodeFilter[]	getPredicates() Get the predicates used by this XorFilter.
void	setPredicates(NodeFilter[] predicates) Set the predicates for this XorFilter.

Methods inherited from class java.lang.Object

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

Field Detail

mPredicates

protected NodeFilter[] mPredicates

The predicates that are to be xor'ed together;

Constructor Detail

XorFilter

public XorFilter()

Creates a new instance of an XorFilter. With no predicates, this would always answer false to accept(org.htmlparser.Node).

See Also:

setPredicates(org.htmlparser.NodeFilter[])

XorFilter

public XorFilter(NodeFilter left,
                 NodeFilter right)

Creates an XorFilter that accepts nodes acceptable to either filter, but not both.

Parameters:

left - One filter.

right - The other filter.

XorFilter

public XorFilter(NodeFilter[] predicates)

Creates an XorFilter that accepts nodes acceptable an odd number of the given filters.

Parameters:

predicates - The list of filters.

Method Detail

getPredicates

public NodeFilter[] getPredicates()

Get the predicates used by this XorFilter.

Returns:

The predicates currently in use.

setPredicates

public void setPredicates(NodeFilter[] predicates)

Set the predicates for this XorFilter.

Parameters:

predicates - The list of predidcates to use in accept(org.htmlparser.Node).

accept

public boolean accept(Node node)

Accept nodes that are acceptable to an odd number of its predicate filters.

Specified by:

accept in interface NodeFilter

Parameters:

node - The node to check.

Returns:

true if an odd number of the predicate filters find the node is acceptable, false otherwise.