org.apache.asterix.metadata.entitytupletranslators

Class CompactionPolicyTupleTranslator

java.lang.Object

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

org.apache.asterix.metadata.entitytupletranslators.CompactionPolicyTupleTranslator

All Implemented Interfaces:

IMetadataEntityTupleTranslator<CompactionPolicy>

public class CompactionPolicyTupleTranslator
extends AbstractTupleTranslator<CompactionPolicy>

Translates a Dataset metadata entity to an ITupleReference and vice versa.

Field Summary

Fields

Modifier and Type	Field and Description
static int	COMPACTION_POLICY_DATAVERSE_NAME_FIELD_INDEX
static int	COMPACTION_POLICY_NAME_FIELD_INDEX
static int	COMPACTION_POLICY_PAYLOAD_TUPLE_FIELD_INDEX

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

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

Constructor Summary

Constructors

Constructor and Description
CompactionPolicyTupleTranslator(boolean getTuple)

Method Summary

Methods

Modifier and Type	Method and Description
CompactionPolicy	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(CompactionPolicy compactionPolicy) 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

COMPACTION_POLICY_DATAVERSE_NAME_FIELD_INDEX

public static final int COMPACTION_POLICY_DATAVERSE_NAME_FIELD_INDEX

See Also:

Constant Field Values

COMPACTION_POLICY_NAME_FIELD_INDEX

public static final int COMPACTION_POLICY_NAME_FIELD_INDEX

See Also:

Constant Field Values

COMPACTION_POLICY_PAYLOAD_TUPLE_FIELD_INDEX

public static final int COMPACTION_POLICY_PAYLOAD_TUPLE_FIELD_INDEX

See Also:

Constant Field Values

Constructor Detail

CompactionPolicyTupleTranslator

public CompactionPolicyTupleTranslator(boolean getTuple)

Method Detail

getMetadataEntityFromTuple

public CompactionPolicy getMetadataEntityFromTuple(org.apache.hyracks.dataflow.common.data.accessors.ITupleReference tuple)
                                            throws 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:

IOException

getTupleFromMetadataEntity

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

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:

compactionPolicy - Metadata entity to be written into a tuple.

Throws:

IOException

MetadataException