org.apache.lens.driver.hive

Class HiveInMemoryResultSet

java.lang.Object

org.apache.lens.server.api.driver.LensResultSet

org.apache.lens.server.api.driver.InMemoryResultSet

org.apache.lens.driver.hive.HiveInMemoryResultSet

public class HiveInMemoryResultSet
extends InMemoryResultSet

The Class HiveInMemoryResultSet.

Constructor Summary

Constructors

Constructor and Description
HiveInMemoryResultSet(org.apache.hive.service.cli.OperationHandle hiveHandle, org.apache.hive.service.cli.CLIServiceClient client, boolean closeAfterFecth) Instantiates a new hive in memory result set.

Method Summary

Methods

Modifier and Type	Method and Description
LensResultSetMetadata	getMetadata() Get the result set metadata
boolean	hasNext() Whether there is another result row available.
ResultRow	next() Read the next result row.
boolean	seekToStart()
void	setFetchSize(int size) Set number of rows to be fetched at time
int	size() Get the size of the result set.

Methods inherited from class org.apache.lens.server.api.driver.InMemoryResultSet

toQueryResult

Methods inherited from class java.lang.Object

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

Constructor Detail

HiveInMemoryResultSet

public HiveInMemoryResultSet(org.apache.hive.service.cli.OperationHandle hiveHandle,
                     org.apache.hive.service.cli.CLIServiceClient client,
                     boolean closeAfterFecth)
                      throws org.apache.hive.service.cli.HiveSQLException

Instantiates a new hive in memory result set.

Parameters:

hiveHandle - the hive handle

client - the client

closeAfterFecth - the close after fecth

Throws:

org.apache.hive.service.cli.HiveSQLException - the hive sql exception

Method Detail

size

public int size()
         throws LensException

Description copied from class: LensResultSet

Get the size of the result set.

Specified by:

size in class LensResultSet

Returns:

The size if available, -1 if not available.

Throws:

LensException - the lens exception

getMetadata

public LensResultSetMetadata getMetadata()
                                  throws LensException

Description copied from class: LensResultSet

Get the result set metadata

Specified by:

getMetadata in class LensResultSet

Returns:

Returns LensResultSetMetadata

Throws:

LensException

seekToStart

public boolean seekToStart()

Specified by:

seekToStart in class InMemoryResultSet

hasNext

public boolean hasNext()
                throws LensException

Description copied from class: InMemoryResultSet

Whether there is another result row available.

Specified by:

hasNext in class InMemoryResultSet

Returns:

true if next row if available, false otherwise

Throws:

LensException - the lens exception

next

public ResultRow next()
               throws LensException

Description copied from class: InMemoryResultSet

Read the next result row.

Specified by:

next in class InMemoryResultSet

Returns:

The row as list of object

Throws:

LensException - the lens exception

setFetchSize

public void setFetchSize(int size)
                  throws LensException

Description copied from class: InMemoryResultSet

Set number of rows to be fetched at time

Specified by:

setFetchSize in class InMemoryResultSet

Throws:

LensException