org.gridgain.grid.lang
Class GridAbsPredicate

java.lang.Object
  org.gridgain.grid.lang.GridMetadataAwareAdapter
      org.gridgain.grid.lang.GridLambdaAdapter
          org.gridgain.grid.lang.GridAbsPredicate

All Implemented Interfaces:

Serializable, Cloneable, GridMetadataAware, GridPeerDeployAware, GridLambda

Direct Known Subclasses:

GridAbsPredicateX, GridNullOpt, GridOpt, GridSegmentationResolver, PA

public abstract class GridAbsPredicate
extends GridLambdaAdapter

Defines absolute (no-arg) predicate construct. Predicate like closure is a first-class function that is defined with (or closed over) its free variables that are bound to the closure scope at execution.

Type Alias

To provide for more terse code you can use a typedef P1 class or various factory methods in GridFunc class. Note, however, that since typedefs in Java rely on inheritance you should not use these type aliases in signatures.

Thread Safety

Note that this interface does not impose or assume any specific thread-safety by its implementations. Each implementation can elect what type of thread-safety it provides, if any.

Wiki & Forum:

Wiki
Forum

See Also:

P1, GridFunc, Serialized Form

Constructor Summary

GridAbsPredicate()

Method Summary

<A> GridOutClosure<A>	andThen(GridClosure<Boolean,A> c) Gets closure that applies given closure over the result of this predicate.
GridAbsClosure	andThen(GridInClosure<Boolean> c) Gets closure that applies given closure over the result of this predicate.
GridAbsPredicate	andThen(GridPredicate<Boolean> c) Gets predicate that applies given predicate over the result of this predicate.
abstract boolean	apply() Predicate body.
<E> GridPredicate<E>	uncurry() Gets predicate that ignores its argument and returns the same value as this predicate.
<E1,E2> GridPredicate2<E1,E2>	uncurry2() Gets predicate that ignores its arguments and returns the same value as this predicate.
<E1,E2,E3> GridPredicate3<E1,E2,E3>	uncurry3() Gets predicate that ignores its arguments and returns the same value as this predicate.

Methods inherited from class org.gridgain.grid.lang.GridLambdaAdapter

classLoader, deployClass, peerDeployLike, withMeta

Methods inherited from class org.gridgain.grid.lang.GridMetadataAwareAdapter

addMeta, addMetaIfAbsent, addMetaIfAbsent, allMeta, clone, copyMeta, copyMeta, hasMeta, hasMeta, meta, putMetaIfAbsent, putMetaIfAbsent, readExternalMeta, removeMeta, removeMeta, replaceMeta, writeExternalMeta

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.gridgain.grid.GridMetadataAware

addMeta, addMetaIfAbsent, addMetaIfAbsent, allMeta, copyMeta, copyMeta, hasMeta, hasMeta, meta, putMetaIfAbsent, putMetaIfAbsent, removeMeta, removeMeta, replaceMeta

Constructor Detail

GridAbsPredicate

public GridAbsPredicate()

Method Detail

apply

public abstract boolean apply()

Predicate body.

Returns:

Return value.

uncurry

public <E> GridPredicate<E> uncurry()

Gets predicate that ignores its argument and returns the same value as this predicate.

Type Parameters:

E - Type of ignore argument.

Returns:

Predicate that ignores its argument and returns the same value as this predicate.

uncurry2

public <E1,E2> GridPredicate2<E1,E2> uncurry2()

Gets predicate that ignores its arguments and returns the same value as this predicate.

Type Parameters:

E1 - Type of 1st ignore argument.

E2 - Type of 2nd ignore argument.

Returns:

Predicate that ignores its arguments and returns the same value as this predicate.

uncurry3

public <E1,E2,E3> GridPredicate3<E1,E2,E3> uncurry3()

Gets predicate that ignores its arguments and returns the same value as this predicate.

Type Parameters:

E1 - Type of 1st ignore argument.

E2 - Type of 2nd ignore argument.

E3 - Type of 3d ignore argument.

Returns:

Predicate that ignores its arguments and returns the same value as this predicate.

andThen

public <A> GridOutClosure<A> andThen(GridClosure<Boolean,A> c)

Gets closure that applies given closure over the result of this predicate.

Type Parameters:

A - Return type of new closure.

Parameters:

c - Closure.

Returns:

New closure.

andThen

public GridAbsClosure andThen(GridInClosure<Boolean> c)

Gets closure that applies given closure over the result of this predicate.

Parameters:

c - Closure.

Returns:

New closure.

andThen

public GridAbsPredicate andThen(GridPredicate<Boolean> c)

Gets predicate that applies given predicate over the result of this predicate.

Parameters:

c - Predicate.

Returns:

New predicate.