org.apache.asterix.metadata.entitytupletranslators

Class ExternalFileTupleTranslator

java.lang.Object

org.apache.asterix.metadata.entitytupletranslators.AbstractTupleTranslator<ExternalFile>

org.apache.asterix.metadata.entitytupletranslators.ExternalFileTupleTranslator

All Implemented Interfaces:

IMetadataEntityTupleTranslator<ExternalFile>

public class ExternalFileTupleTranslator
extends AbstractTupleTranslator<ExternalFile>

Field Summary

Fields

Modifier and Type	Field and Description
protected AMutableDateTime	aDateTime
protected AMutableInt32	aInt32
protected AMutableInt64	aInt64
protected org.apache.hyracks.api.dataflow.value.ISerializerDeserializer<ADateTime>	dateTimeSerde
static int	EXTERNAL_FILE_DATASETNAME_TUPLE_FIELD_INDEX
static int	EXTERNAL_FILE_DATAVERSENAME_TUPLE_FIELD_INDEX
static int	EXTERNAL_FILE_NUMBER_TUPLE_FIELD_INDEX
static int	EXTERNAL_FILE_PAYLOAD_TUPLE_FIELD_INDEX
protected org.apache.hyracks.api.dataflow.value.ISerializerDeserializer<AInt32>	intSerde
protected org.apache.hyracks.api.dataflow.value.ISerializerDeserializer<AInt64>	longSerde

Fields inherited from class org.apache.asterix.metadata.entitytupletranslators.AbstractTupleTranslator

aString, booleanSerde, fieldValue, int32Serde, recordBuilder, stringSerde, tuple, tupleBuilder

Constructor Summary

Constructors

Constructor and Description
ExternalFileTupleTranslator(boolean getTuple)

Method Summary

Methods

Modifier and Type	Method and Description
ExternalFile	getMetadataEntityFromTuple(org.apache.hyracks.dataflow.common.data.accessors.ITupleReference tuple) Transforms a metadata entity of type T from a given tuple to a Java object (deserializing the appropriate field(s) in the tuple as necessary).
org.apache.hyracks.dataflow.common.data.accessors.ITupleReference	getTupleFromMetadataEntity(ExternalFile externalFile) Serializes the given metadata entity of type T into an appropriate tuple representation (i.e., some number of fields containing bytes).

Methods inherited from class java.lang.Object

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

Field Detail

EXTERNAL_FILE_DATAVERSENAME_TUPLE_FIELD_INDEX

public static final int EXTERNAL_FILE_DATAVERSENAME_TUPLE_FIELD_INDEX

See Also:

Constant Field Values

EXTERNAL_FILE_DATASETNAME_TUPLE_FIELD_INDEX

public static final int EXTERNAL_FILE_DATASETNAME_TUPLE_FIELD_INDEX

See Also:

Constant Field Values

EXTERNAL_FILE_NUMBER_TUPLE_FIELD_INDEX

public static final int EXTERNAL_FILE_NUMBER_TUPLE_FIELD_INDEX

See Also:

Constant Field Values

EXTERNAL_FILE_PAYLOAD_TUPLE_FIELD_INDEX

public static final int EXTERNAL_FILE_PAYLOAD_TUPLE_FIELD_INDEX

See Also:

Constant Field Values

aInt32

protected AMutableInt32 aInt32

aDateTime

protected AMutableDateTime aDateTime

aInt64

protected AMutableInt64 aInt64

intSerde

protected org.apache.hyracks.api.dataflow.value.ISerializerDeserializer<AInt32> intSerde

dateTimeSerde

protected org.apache.hyracks.api.dataflow.value.ISerializerDeserializer<ADateTime> dateTimeSerde

longSerde

protected org.apache.hyracks.api.dataflow.value.ISerializerDeserializer<AInt64> longSerde

Constructor Detail

ExternalFileTupleTranslator

public ExternalFileTupleTranslator(boolean getTuple)

Method Detail

getMetadataEntityFromTuple

public ExternalFile getMetadataEntityFromTuple(org.apache.hyracks.dataflow.common.data.accessors.ITupleReference tuple)
                                        throws MetadataException,
                                               IOException

Description copied from interface: IMetadataEntityTupleTranslator

Transforms a metadata entity of type T from a given tuple to a Java object (deserializing the appropriate field(s) in the tuple as necessary).

Parameters:

tuple - Tuple containing a serialized representation of a metadata entity of type T.

Returns:

A new instance of a metadata entity of type T.

Throws:

MetadataException

IOException

getTupleFromMetadataEntity

public org.apache.hyracks.dataflow.common.data.accessors.ITupleReference getTupleFromMetadataEntity(ExternalFile externalFile)
                                                                                             throws MetadataException,
                                                                                                    IOException

Description copied from interface: IMetadataEntityTupleTranslator

Serializes the given metadata entity of type T into an appropriate tuple representation (i.e., some number of fields containing bytes).

Parameters:

externalFile - Metadata entity to be written into a tuple.

Throws:

IOException

MetadataException