org.apache.asterix.metadata.entitytupletranslators

Class NodeTupleTranslator

java.lang.Object

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

org.apache.asterix.metadata.entitytupletranslators.NodeTupleTranslator

All Implemented Interfaces:

IMetadataEntityTupleTranslator<Node>

public class NodeTupleTranslator
extends AbstractTupleTranslator<Node>

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

Field Summary

Fields

Modifier and Type	Field and Description
static int	NODE_NODENAME_TUPLE_FIELD_INDEX
static int	NODE_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
NodeTupleTranslator(boolean getTuple)

Method Summary

Methods

Modifier and Type	Method and Description
Node	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(Node 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

NODE_NODENAME_TUPLE_FIELD_INDEX

public static final int NODE_NODENAME_TUPLE_FIELD_INDEX

See Also:

Constant Field Values

NODE_PAYLOAD_TUPLE_FIELD_INDEX

public static final int NODE_PAYLOAD_TUPLE_FIELD_INDEX

See Also:

Constant Field Values

Constructor Detail

NodeTupleTranslator

public NodeTupleTranslator(boolean getTuple)

Method Detail

getMetadataEntityFromTuple

public Node getMetadataEntityFromTuple(org.apache.hyracks.dataflow.common.data.accessors.ITupleReference frameTuple)
                                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:

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

getTupleFromMetadataEntity

public org.apache.hyracks.dataflow.common.data.accessors.ITupleReference getTupleFromMetadataEntity(Node 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