org.apache.asterix.metadata.valueextractors

Class TupleCopyValueExtractor

java.lang.Object

org.apache.asterix.metadata.valueextractors.TupleCopyValueExtractor

All Implemented Interfaces:

IValueExtractor<org.apache.hyracks.dataflow.common.data.accessors.ITupleReference>

public class TupleCopyValueExtractor
extends Object
implements IValueExtractor<org.apache.hyracks.dataflow.common.data.accessors.ITupleReference>

Returns a copy of the given input tuple.

Constructor Summary

Constructors

Constructor and Description
TupleCopyValueExtractor(org.apache.hyracks.api.dataflow.value.ITypeTraits[] typeTraits)

Method Summary

Methods

Modifier and Type	Method and Description
org.apache.hyracks.dataflow.common.data.accessors.ITupleReference	getValue(JobId jobId, org.apache.hyracks.dataflow.common.data.accessors.ITupleReference tuple) Extracts an object of type T from a given tuple.

Methods inherited from class java.lang.Object

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

Constructor Detail

TupleCopyValueExtractor

public TupleCopyValueExtractor(org.apache.hyracks.api.dataflow.value.ITypeTraits[] typeTraits)

Method Detail

getValue

public org.apache.hyracks.dataflow.common.data.accessors.ITupleReference getValue(JobId jobId,
                                                                         org.apache.hyracks.dataflow.common.data.accessors.ITupleReference tuple)
                                                                           throws MetadataException,
                                                                                  org.apache.hyracks.api.exceptions.HyracksDataException,
                                                                                  IOException

Description copied from interface: IValueExtractor

Extracts an object of type T from a given tuple.

Specified by:

getValue in interface IValueExtractor<org.apache.hyracks.dataflow.common.data.accessors.ITupleReference>

Parameters:

jobId - A globally unique transaction id.

tuple - Tuple from which an object shall be extracted.

Returns:

New object of type T.

Throws:

MetadataException

org.apache.hyracks.api.exceptions.HyracksDataException

IOException