public class RankStream extends TupleStream implements Expressible
TupleStream.IgnoreException
MapWriter.EntryWriter
Constructor and Description |
---|
RankStream(StreamExpression expression,
StreamFactory factory) |
RankStream(TupleStream tupleStream,
int size,
StreamComparator comp) |
Modifier and Type | Method and Description |
---|---|
List<TupleStream> |
children() |
void |
close() |
StreamComparator |
getComparator() |
int |
getCost() |
StreamComparator |
getStreamSort()
Return the stream sort - ie, the order in which records are returned
|
void |
open() |
Tuple |
read() |
void |
setStreamContext(StreamContext context) |
Explanation |
toExplanation(StreamFactory factory)
Returns an explanation about the stream object
|
StreamExpression |
toExpression(StreamFactory factory) |
getShards, getStreamNodeId, writeMap
public RankStream(TupleStream tupleStream, int size, StreamComparator comp) throws IOException
IOException
public RankStream(StreamExpression expression, StreamFactory factory) throws IOException
IOException
public StreamExpression toExpression(StreamFactory factory) throws IOException
toExpression
in interface Expressible
IOException
public Explanation toExplanation(StreamFactory factory) throws IOException
Expressible
toExplanation
in interface Expressible
toExplanation
in class TupleStream
factory
- Stream factory for this, contains information about the function nameIOException
- throw on any errorpublic void setStreamContext(StreamContext context)
setStreamContext
in class TupleStream
public List<TupleStream> children()
children
in class TupleStream
public void open() throws IOException
open
in class TupleStream
IOException
public void close() throws IOException
close
in interface Closeable
close
in interface AutoCloseable
close
in class TupleStream
IOException
public StreamComparator getComparator()
public Tuple read() throws IOException
read
in class TupleStream
IOException
public StreamComparator getStreamSort()
getStreamSort
in class TupleStream
public int getCost()
getCost
in class TupleStream
Copyright © 2000-2017 Apache Software Foundation. All Rights Reserved.