prefuse.data.util
Class ValidEdgePredicate

java.lang.Object
  prefuse.data.expression.AbstractExpression
      prefuse.data.expression.AbstractPredicate
          prefuse.data.util.ValidEdgePredicate

All Implemented Interfaces:

java.util.EventListener, ExpressionListener, Expression, Predicate

public class ValidEdgePredicate
extends AbstractPredicate

Filtering predicate over a potential edge table that indicates which edges are valid edges according to a backing node table. Useful for creating a pool of edges for which not all node have been created, and then filtering out the valid edges using the node pool.

Author:

jeffrey heer

Constructor Summary

ValidEdgePredicate(Graph g)
Creates a new ValidEdgePredicate.

Method Summary

boolean

getBoolean(Tuple tpl) Indicates if the given tuple can be used as a valid edge for the nodes of the backing graph.

Methods inherited from class prefuse.data.expression.AbstractPredicate

get, getType

Methods inherited from class prefuse.data.expression.AbstractExpression

addChildListeners, addExpressionListener, expressionChanged, fireExpressionChange, getDouble, getFloat, getInt, getLong, hasListeners, removeChildListeners, removeExpressionListener, visit

Methods inherited from class java.lang.Object

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

Methods inherited from interface prefuse.data.expression.Expression

addExpressionListener, getDouble, getFloat, getInt, getLong, removeExpressionListener, visit

Constructor Detail

ValidEdgePredicate

public ValidEdgePredicate(Graph g)

Creates a new ValidEdgePredicate.

Parameters:

g - the backing graph, the node table of this graph will be used to check for valid edges.

Method Detail

getBoolean

public boolean getBoolean(Tuple tpl)

Indicates if the given tuple can be used as a valid edge for the nodes of the backing graph.

Specified by:

getBoolean in interface Expression

Overrides:

getBoolean in class AbstractExpression

Parameters:

tpl - a data tuple from a potential edge table

Returns:

true if the tuple contents allow it to serve as a valid edge of between nodes in the backing graph

See Also:

Expression.getBoolean(prefuse.data.Tuple)