org.apache.openjpa.slice.jdbc
Class UniqueResultObjectProvider

java.lang.Object
  org.apache.openjpa.slice.jdbc.UniqueResultObjectProvider

All Implemented Interfaces:

ResultObjectProvider, Closeable

public class UniqueResultObjectProvider
extends Object
implements ResultObjectProvider

Aggregates individual single query results from different databases.

Author:

Pinaki Poddar

Constructor Summary

UniqueResultObjectProvider(ResultObjectProvider[] rops, StoreQuery q, QueryExpressions[] exps)

Method Summary

boolean	absolute(int pos)
void	close()
(package private) Object	count(Object current, Object other)
Object	getResultObject()
void	handleCheckedException(Exception e)
(package private) Object	max(Object current, Object other)
(package private) Object	min(Object current, Object other)
boolean	next()
void	open()
void	reset()
int	size()
(package private) Object	sum(Object current, Object other)
boolean	supportsRandomAccess()

Methods inherited from class java.lang.Object

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

Constructor Detail

UniqueResultObjectProvider

public UniqueResultObjectProvider(ResultObjectProvider[] rops,
                                  StoreQuery q,
                                  QueryExpressions[] exps)

Method Detail

absolute

public boolean absolute(int pos)
                 throws Exception

Specified by:

absolute in interface ResultObjectProvider

Throws:

Exception

close

public void close()
           throws Exception

Specified by:

close in interface ResultObjectProvider

Specified by:

close in interface Closeable

Throws:

Exception

getResultObject

public Object getResultObject()
                       throws Exception

Specified by:

getResultObject in interface ResultObjectProvider

Throws:

Exception

handleCheckedException

public void handleCheckedException(Exception e)

Specified by:

handleCheckedException in interface ResultObjectProvider

next

public boolean next()
             throws Exception

Specified by:

next in interface ResultObjectProvider

Throws:

Exception

count

Object count(Object current,
             Object other)

max

Object max(Object current,
           Object other)

min

Object min(Object current,
           Object other)

sum

Object sum(Object current,
           Object other)

open

public void open()
          throws Exception

Specified by:

open in interface ResultObjectProvider

Throws:

Exception

reset

public void reset()
           throws Exception

Specified by:

reset in interface ResultObjectProvider

Throws:

Exception

size

public int size()
         throws Exception

Specified by:

size in interface ResultObjectProvider

Throws:

Exception

supportsRandomAccess

public boolean supportsRandomAccess()

Specified by:

supportsRandomAccess in interface ResultObjectProvider