org.apache.asterix.metadata.entitytupletranslators

Class IndexTupleTranslator

java.lang.Object

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

org.apache.asterix.metadata.entitytupletranslators.IndexTupleTranslator

All Implemented Interfaces:

IMetadataEntityTupleTranslator<Index>

public class IndexTupleTranslator
extends AbstractTupleTranslator<Index>

Translates an Index metadata entity to an ITupleReference and vice versa.

Field Summary

Fields

Modifier and Type	Field and Description
static String	GRAM_LENGTH_FIELD_NAME
static int	INDEX_DATASETNAME_TUPLE_FIELD_INDEX
static int	INDEX_DATAVERSENAME_TUPLE_FIELD_INDEX
static int	INDEX_INDEXNAME_TUPLE_FIELD_INDEX
static String	INDEX_ISENFORCED_FIELD_NAME
static int	INDEX_PAYLOAD_TUPLE_FIELD_INDEX
static String	INDEX_SEARCHKEY_TYPE_FIELD_NAME
protected org.apache.hyracks.api.dataflow.value.ISerializerDeserializer<AInt32>	intSerde

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

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

Constructor Summary

Constructors

Constructor and Description
IndexTupleTranslator(JobId jobId, MetadataNode metadataNode, boolean getTuple)

Method Summary

Methods

Modifier and Type	Method and Description
Index	getMetadataEntityFromTuple(org.apache.hyracks.dataflow.common.data.accessors.ITupleReference frameTuple) 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(Index instance) 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

INDEX_DATAVERSENAME_TUPLE_FIELD_INDEX

public static final int INDEX_DATAVERSENAME_TUPLE_FIELD_INDEX

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Constant Field Values

INDEX_DATASETNAME_TUPLE_FIELD_INDEX

public static final int INDEX_DATASETNAME_TUPLE_FIELD_INDEX

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Constant Field Values

INDEX_INDEXNAME_TUPLE_FIELD_INDEX

public static final int INDEX_INDEXNAME_TUPLE_FIELD_INDEX

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Constant Field Values

INDEX_PAYLOAD_TUPLE_FIELD_INDEX

public static final int INDEX_PAYLOAD_TUPLE_FIELD_INDEX

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Constant Field Values

GRAM_LENGTH_FIELD_NAME

public static final String GRAM_LENGTH_FIELD_NAME

See Also:

Constant Field Values

INDEX_SEARCHKEY_TYPE_FIELD_NAME

public static final String INDEX_SEARCHKEY_TYPE_FIELD_NAME

See Also:

Constant Field Values

INDEX_ISENFORCED_FIELD_NAME

public static final String INDEX_ISENFORCED_FIELD_NAME

See Also:

Constant Field Values

intSerde

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

Constructor Detail

IndexTupleTranslator

public IndexTupleTranslator(JobId jobId,
                    MetadataNode metadataNode,
                    boolean getTuple)

Method Detail

getMetadataEntityFromTuple

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

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:

frameTuple - 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

MetadataException

getTupleFromMetadataEntity

public org.apache.hyracks.dataflow.common.data.accessors.ITupleReference getTupleFromMetadataEntity(Index instance)
                                                                                             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:

instance - Metadata entity to be written into a tuple.

Throws:

IOException

MetadataException