org.apache.solr.client.solrj.io.stream

Class UniqueStream

java.lang.Object

org.apache.solr.client.solrj.io.stream.TupleStream

org.apache.solr.client.solrj.io.stream.UniqueStream

All Implemented Interfaces:

Serializable, ExpressibleStream

public class UniqueStream
extends TupleStream
implements ExpressibleStream

The UniqueStream emits a unique stream of Tuples based on a Comparator. Note: The sort order of the underlying stream must match the Comparator.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
UniqueStream(StreamExpression expression, StreamFactory factory)
UniqueStream(TupleStream tupleStream, Comparator<Tuple> comp)

Method Summary

Methods

Modifier and Type	Method and Description
List<TupleStream>	children()
void	close()
int	getCost()
void	open()
Tuple	read()
void	setComp(Comparator<Tuple> comp)
void	setStreamContext(StreamContext context)
StreamExpression	toExpression(StreamFactory factory)

Methods inherited from class java.lang.Object

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

Constructor Detail

UniqueStream

public UniqueStream(TupleStream tupleStream,
            Comparator<Tuple> comp)

UniqueStream

public UniqueStream(StreamExpression expression,
            StreamFactory factory)
             throws IOException

Throws:

IOException

Method Detail

toExpression

public StreamExpression toExpression(StreamFactory factory)
                              throws IOException

Specified by:

toExpression in interface ExpressibleStream

Throws:

IOException

setComp

public void setComp(Comparator<Tuple> comp)

setStreamContext

public void setStreamContext(StreamContext context)

Specified by:

setStreamContext in class TupleStream

children

public List<TupleStream> children()

Specified by:

children in class TupleStream

open

public void open()
          throws IOException

Specified by:

open in class TupleStream

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in class TupleStream

Throws:

IOException

read

public Tuple read()
           throws IOException

Specified by:

read in class TupleStream

Throws:

IOException

getCost

public int getCost()

Overrides:

getCost in class TupleStream