net.fortytwo.ripple.libs.stream
Class Distinct

java.lang.Object
  net.fortytwo.ripple.model.PrimitiveStackMapping
      net.fortytwo.ripple.libs.stream.Distinct

All Implemented Interfaces:

Mapping<StackContext,StackContext,RippleException>, RippleValue, StackMapping

public class Distinct
extends PrimitiveStackMapping

A filter which drops any stack which has already been transmitted and behaves like the identity filter otherwise, making a stream of stacks into a set of stacks.

Nested Class Summary

protected class

Distinct.DistinctInner

Nested classes/interfaces inherited from class net.fortytwo.ripple.model.PrimitiveStackMapping

PrimitiveStackMapping.Parameter

Nested classes/interfaces inherited from interface net.fortytwo.ripple.model.RippleValue

RippleValue.Type

Constructor Summary

Distinct()

Method Summary

void	apply(StackContext arg, Sink<StackContext,RippleException> solutions)
String	getComment()
String[]	getIdentifiers()
PrimitiveStackMapping.Parameter[]	getParameters()

Methods inherited from class net.fortytwo.ripple.model.PrimitiveStackMapping

arity, equals, getInverse, getMapping, getType, hashCode, isTransparent, printTo, setRdfEquivalent, toRDF, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Distinct

public Distinct()
         throws RippleException

Throws:

RippleException

Method Detail

getIdentifiers

public String[] getIdentifiers()

Specified by:

getIdentifiers in class PrimitiveStackMapping

getParameters

public PrimitiveStackMapping.Parameter[] getParameters()

Specified by:

getParameters in class PrimitiveStackMapping

getComment

public String getComment()

Specified by:

getComment in class PrimitiveStackMapping

Returns:

a comment about the primitive. May be null.

apply

public void apply(StackContext arg,
                  Sink<StackContext,RippleException> solutions)
           throws RippleException

Throws:

RippleException