prefuse.data.expression
Class AbstractPredicate

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

All Implemented Interfaces:

java.util.EventListener, ExpressionListener, Expression, Predicate

Direct Known Subclasses:

CompositePredicate, NotPredicate, ValidEdgePredicate

public abstract class AbstractPredicate
extends AbstractExpression
implements Predicate

Abstract base class for dedicated Predicate instances.

Author:

jeffrey heer

Constructor Summary

AbstractPredicate()

Method Summary

java.lang.Object	get(Tuple t) Returns the wrapper Object type for the result of Expression.getBoolean(Tuple).
java.lang.Class	getType(Schema s) Returns boolean.class.

Methods inherited from class prefuse.data.expression.AbstractExpression

addChildListeners, addExpressionListener, expressionChanged, fireExpressionChange, getBoolean, 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, getBoolean, getDouble, getFloat, getInt, getLong, removeExpressionListener, visit

Constructor Detail

AbstractPredicate

public AbstractPredicate()

Method Detail

getType

public java.lang.Class getType(Schema s)

Returns boolean.class.

Specified by:

getType in interface Expression

See Also:

Expression.getType(prefuse.data.Schema)

get

public java.lang.Object get(Tuple t)

Returns the wrapper Object type for the result of Expression.getBoolean(Tuple).

Specified by:

get in interface Expression

Overrides:

get in class AbstractExpression

Parameters:

t - the input Tuple

Returns:

the Expression return value, as an Object

See Also:

Expression.get(prefuse.data.Tuple)