cgl.imr.types
Class NullValue

java.lang.Object
  extended by cgl.imr.types.NullValue
All Implemented Interfaces:
TwisterConstants, TwisterSerializable, Value

public class NullValue
extends Object
implements Value

Null Value that can be used for Map/Reduce tasks if necessary.


Nested Class Summary
 
Nested classes/interfaces inherited from interface cgl.imr.base.TwisterConstants
TwisterConstants.JobState
 
Field Summary
 
Fields inherited from interface cgl.imr.base.TwisterConstants
COMBINE_INPUT, COMBINE_TOPIC_BASE, DIR_LIST_REQ, DIR_LIST_RES, FAILED, FIXED_DATA_FILE, FIXED_DATA_MODEL, HEP_DATA_STRING, MAP_ITERATIONS_OVER, MAP_REDUCE_TOPIC_BASE, MAP_TASK, MAP_TASK_REQUEST, MAP_WORKER_STARTED, MAPPER_REQUEST, MONITOR_REQUEST, MONITOR_RESPONSE, MONITOR_SLEEP_TIME, NEW_JOB_REQUEST, NEW_JOB_RESPONSE, NUM_MAP_TASKS, NUM_REDUCE_TASKS, PARTITION_FILE_RESPONSE_TOPIC_BASE, PARTITION_FILE_SPLIT_PATTERN, PROPERTIES_FILE, REDUCE_INPUT, REDUCE_RESPONSE, REDUCE_TASK, REDUCE_TASK_REQUEST, REDUCE_TOPIC_BASE, REDUCE_WORKER_REQUEST, RESPONSE_TOPIC_BASE, SEND_RECV_MAX_SLEEP_TIME, SEND_RECV_SLEEP_TIME, SUCCESS, TASK_STATUS, WORKER_RESPONSE
 
Constructor Summary
NullValue()
           
 
Method Summary
 void fromBytes(byte[] bytes)
          Construct the object back from a previously serialized bytes.
 byte[] getBytes()
          Serialize the object and returns the bytes.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

NullValue

public NullValue()
Method Detail

fromBytes

public void fromBytes(byte[] bytes)
               throws SerializationException
Description copied from interface: TwisterSerializable
Construct the object back from a previously serialized bytes.

Specified by:
fromBytes in interface TwisterSerializable
Throws:
SerializationException

getBytes

public byte[] getBytes()
                throws SerializationException
Description copied from interface: TwisterSerializable
Serialize the object and returns the bytes.

Specified by:
getBytes in interface TwisterSerializable
Returns:
byte[] of serialized object.
Throws:
SerializationException


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