gr.uoa.di.madgik.searchlibrary.operatorlibrary
Class Unary

java.lang.Object
  gr.uoa.di.madgik.searchlibrary.operatorlibrary.Unary

Direct Known Subclasses:

GradualMergeOp, PartitionOp, ScriptOp, SelectOp, TransformOp

public abstract class Unary
extends Object

Field Summary

protected URI	inLocator The locator of the input
protected Map<String,String>	operatorParameters
protected StatsContainer	stats
protected long	timeout
static long	TimeoutDef The default timeout used by the IRecordWriter and all IRecordReaders.
protected TimeUnit	timeUnit
static TimeUnit	TimeUnitDef The default timeout unit used by the RecordWriter and all IRecordReaders.

Constructor Summary

Unary(URI inLocator, Map<String,String> operatorParameters, StatsContainer stats)
Constructor of the abstract class.

Unary(URI inLocator, Map<String,String> operatorParameters, StatsContainer stats, long timeout, TimeUnit timeUnit)

Method Summary

abstract URI

compute()

Methods inherited from class java.lang.Object

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

Field Detail

inLocator

protected URI inLocator

The locator of the input

operatorParameters

protected Map<String,String> operatorParameters

stats

protected StatsContainer stats

TimeoutDef

public static final long TimeoutDef

The default timeout used by the IRecordWriter and all IRecordReaders. Currently set to 600.

See Also:

Constant Field Values

TimeUnitDef

public static final TimeUnit TimeUnitDef

The default timeout unit used by the RecordWriter and all IRecordReaders. The current default unit is seconds.

timeout

protected long timeout

timeUnit

protected TimeUnit timeUnit

Constructor Detail

Unary

public Unary(URI inLocator,
             Map<String,String> operatorParameters,
             StatsContainer stats)
      throws Exception

Constructor of the abstract class. Used for initialization.

Parameters:

inLocator - input value of the Unary

operatorParameters - input parameters of the Unary

stats - Statistics

Throws:

Exception - If the initialization of the Unary fails

Unary

public Unary(URI inLocator,
             Map<String,String> operatorParameters,
             StatsContainer stats,
             long timeout,
             TimeUnit timeUnit)
      throws Exception

Throws:

Exception

Method Detail

compute

public abstract URI compute()
                     throws Exception

Throws:

Exception