visad.data.in
Class Condition

java.lang.Object
  visad.data.in.Condition

Direct Known Subclasses:

AndCondition, MathTypeCondition, NotCondition, OrCondition

public abstract class Condition
extends Object

Provides support for applying arbitrary conditions to VisAD data objects. This class supports data filters like Selector.

Instances are immutable.

Author:

Steven R. Emmerson

Field Summary

static Condition

TRIVIAL_CONDITION The trivial condition.

Constructor Summary

Condition()

Method Summary

abstract boolean

isSatisfied(DataImpl data) Indicates if a VisAD data object satisfies this condition.

Methods inherited from class java.lang.Object

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

Field Detail

TRIVIAL_CONDITION

public static Condition TRIVIAL_CONDITION

The trivial condition. The isSatisfied(visad.DataImpl) method of this condition always returns true.

Constructor Detail

Condition

public Condition()

Method Detail

isSatisfied

public abstract boolean isSatisfied(DataImpl data)

Indicates if a VisAD data object satisfies this condition.

Parameters:

data - A VisAD data object.

Returns:

true if and only if the VisAD data object satisfies this instance's condition.