com.espertech.esper.epl.join.rep
Class RepositoryImpl

java.lang.Object
  com.espertech.esper.epl.join.rep.RepositoryImpl

All Implemented Interfaces:

Repository

public class RepositoryImpl
extends java.lang.Object
implements Repository

Implements a repository for join events and lookup results.

Constructor Summary

RepositoryImpl(int rootStream, EventBean rootEvent, int numStreams)
Ctor.

Method Summary

void	addResult(Cursor cursor, java.util.Set<EventBean> lookupResults, int resultStream) Add a lookup result.
java.util.Iterator<Cursor>	getCursors(int lookupFromStream) Supply events for performing look ups for a given stream.
java.util.List<Node>[]	getNodesPerStream() Returns a list of nodes that are the lookup results per stream.

Methods inherited from class java.lang.Object

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

Constructor Detail

RepositoryImpl

public RepositoryImpl(int rootStream,
                      EventBean rootEvent,
                      int numStreams)

Ctor.

Parameters:

rootStream - is the stream supplying the root event

rootEvent - is the root event

numStreams - is the number of streams

Method Detail

getCursors

public java.util.Iterator<Cursor> getCursors(int lookupFromStream)

Description copied from interface: Repository

Supply events for performing look ups for a given stream.

Specified by:

getCursors in interface Repository

Parameters:

lookupFromStream - is the stream to perform lookup for

Returns:

an iterator over events with additional positioning information

addResult

public void addResult(Cursor cursor,
                      java.util.Set<EventBean> lookupResults,
                      int resultStream)

Description copied from interface: Repository

Add a lookup result.

Specified by:

addResult in interface Repository

Parameters:

cursor - provides result position and parent event and node information

lookupResults - is the events found

resultStream - is the stream number of the stream providing the results

getNodesPerStream

public java.util.List<Node>[] getNodesPerStream()

Returns a list of nodes that are the lookup results per stream.

Returns:

result nodes per stream