edu.ucar.unidata.sruth

Class Predicate

java.lang.Object

edu.ucar.unidata.sruth.Predicate

All Implemented Interfaces:

Iterable<Filter>

public class Predicate
extends Object
implements Iterable<Filter>

A disjunction of filters for selecting files. Instances are thread-safe.

Author:

Steven R. Emmerson

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static Predicate	EVERYTHING An instance that's satisfied by everything.
static Predicate	NOTHING An instance that's satisfied by nothing.

Constructor Summary

Constructors

Constructor and Description
Predicate() Constructs from nothing.

Method Summary

Methods

Modifier and Type	Method and Description
Predicate	add(Filter filter) Adds a filter and returns the predicate that is the result of the addition.
Iterator<Filter>	iterator()
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

EVERYTHING

public static final Predicate EVERYTHING

An instance that's satisfied by everything.

NOTHING

public static final Predicate NOTHING

An instance that's satisfied by nothing.

Constructor Detail

Predicate

public Predicate()

Constructs from nothing. The predicate will be satisfied by nothing.

Method Detail

add

public Predicate add(Filter filter)

Adds a filter and returns the predicate that is the result of the addition.

Parameters:

filter - The filter to be added.

Returns:

The predicate that results from the addition of the filter. Might differ from this instance.

Throws:

NullPointerException - if filter == null.

iterator

public Iterator<Filter> iterator()

Specified by:

iterator in interface Iterable<Filter>

toString

public String toString()

Overrides:

toString in class Object