eu.dnetlib.enabling.resultset

Class StreamingResultSetListener

java.lang.Object

eu.dnetlib.enabling.resultset.StreamingResultSetListener

All Implemented Interfaces:

ResultSetAware, ResultSetListener, TypedResultSetListener<String>

public class StreamingResultSetListener
extends Object
implements ResultSetListener, ResultSetAware

Exposes an iterable through our resultset protocol.

The resultset protocol is constructed as if it were random access. Some kind of sources, like an iterable, is not random access. The consumer of such a resultset knows that, and won't try to access the resultset randomly. However, it could ask for some data which is already sent, because of retries caused by network issues.

Author:

marko

Constructor Summary

Constructors

Constructor and Description
StreamingResultSetListener(Iterable<String> items, int size)
StreamingResultSetListener(Iterator<String> items, int size)

Method Summary

Modifier and Type	Method and Description
Iterator<String>	getItems()
List<String>	getLastChunk()
int	getLastFrom()
int	getLastTo()
List<String>	getResult(int from, int to) get a single page of results.
ResultSet	getResultSet()
int	getSize() get number of elements.
protected void	reset()
void	setItems(Iterator<String> items)
void	setLastChunk(List<String> lastChunk)
void	setLastFrom(int lastFrom)
void	setLastTo(int lastTo)
void	setResultSet(ResultSet resultSet) sets the resultset instance.
void	setSize(int size)

Methods inherited from class java.lang.Object

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

Constructor Detail

StreamingResultSetListener

public StreamingResultSetListener(Iterable<String> items,
                                  int size)

StreamingResultSetListener

public StreamingResultSetListener(Iterator<String> items,
                                  int size)

Method Detail

reset

protected void reset()

getResult

public List<String> getResult(int from,
                              int to)

Description copied from interface: TypedResultSetListener

get a single page of results.

Specified by:

getResult in interface TypedResultSetListener<String>

Parameters:

from - from 1

to - last included

Returns:

page of results

getSize

public int getSize()

Description copied from interface: TypedResultSetListener

get number of elements.

Specified by:

getSize in interface TypedResultSetListener<String>

Returns:

number of elements

setSize

public void setSize(int size)

getItems

public Iterator<String> getItems()

setItems

public void setItems(Iterator<String> items)

getLastFrom

public int getLastFrom()

setLastFrom

public void setLastFrom(int lastFrom)

getLastTo

public int getLastTo()

setLastTo

public void setLastTo(int lastTo)

getLastChunk

public List<String> getLastChunk()

setLastChunk

public void setLastChunk(List<String> lastChunk)

getResultSet

public ResultSet getResultSet()

setResultSet

public void setResultSet(ResultSet resultSet)

Description copied from interface: ResultSetAware

sets the resultset instance.

Specified by:

setResultSet in interface ResultSetAware

Parameters:

resultSet - the resultset instance