org.apache.lens.server.api.driver

Class LensResultSet

java.lang.Object

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

Direct Known Subclasses:

InMemoryResultSet, PersistentResultSet

public abstract class LensResultSet
extends Object

Result set returned by driver.

Constructor Summary

Constructors

Constructor and Description
LensResultSet()

Method Summary

Methods

Modifier and Type	Method and Description
abstract LensResultSetMetadata	getMetadata() Get the result set metadata
abstract Integer	size() Get the size of the result set.
abstract QueryResult	toQueryResult() Get the corresponding query result object.

Methods inherited from class java.lang.Object

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

Constructor Detail

LensResultSet

public LensResultSet()

Method Detail

size

public abstract Integer size()
                      throws LensException

Get the size of the result set.

Returns:

The size if available, -1 if not available.

Throws:

LensException - the lens exception

getMetadata

public abstract LensResultSetMetadata getMetadata()
                                           throws LensException

Get the result set metadata

Returns:

Returns LensResultSetMetadata

Throws:

LensException

toQueryResult

public abstract QueryResult toQueryResult()
                                   throws LensException

Get the corresponding query result object.

Returns:

QueryResult

Throws:

LensException - the lens exception