org.apache.asterix.metadata.valueextractors

Class DatatypeNameValueExtractor

java.lang.Object

org.apache.asterix.metadata.valueextractors.DatatypeNameValueExtractor

All Implemented Interfaces:

IValueExtractor<String>

public class DatatypeNameValueExtractor
extends Object
implements IValueExtractor<String>

Extracts the value of field 'DataypeName' from an ITupleReference that contains a serialized representation of a Datatype metadata entity.

Constructor Summary

Constructors

Constructor and Description
DatatypeNameValueExtractor(String dataverseName, MetadataNode metadataNode)

Method Summary

Methods

Modifier and Type	Method and Description
String	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

DatatypeNameValueExtractor

public DatatypeNameValueExtractor(String dataverseName,
                          MetadataNode metadataNode)

Method Detail

getValue

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

Description copied from interface: IValueExtractor

Extracts an object of type T from a given tuple.

Specified by:

getValue in interface IValueExtractor<String>

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