gr.uoa.di.madgik.searchlibrary.operatorlibrary.datasource
Class DataSource

java.lang.Object
  java.lang.Thread
      gr.uoa.di.madgik.searchlibrary.operatorlibrary.datasource.DataSource

All Implemented Interfaces:

Runnable

Direct Known Subclasses:

FTPDataSource, JDBCDataSource, PathDataSource, TMDataSource

public abstract class DataSource
extends Thread

The DataSource abstract class is extended by all classes that will be used as a data source.

Author:

john.gerbesiotis - DI NKUA

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

Thread.State, Thread.UncaughtExceptionHandler

Field Summary

protected gr.uoa.di.madgik.grs.record.field.FieldDefinition[]	fieldDefs The field definition of the writer
protected String	filterMask The filter mask that will be applied.
protected String	input Input value of the DataSource
protected Map<String,String>	inputParameters Input parameters of the DataSource
protected long	timeout
protected static long	TimeoutDef The default timeout used by the IRecordWriter.
protected TimeUnit	timeUnit
protected static TimeUnit	TimeUnitDef The default timeout unit used by the RecordWriter.
protected gr.uoa.di.madgik.grs.writer.IRecordWriter<gr.uoa.di.madgik.grs.record.Record>	writer The writer to use

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

DataSource(String input, Map<String,String> inputParameters)
Constructor of the abstract class.

Method Summary

abstract URI	getLocator() Abstract method used to retrieve URI locator of the gRS2
void	setTimeout(long timeout)
void	setTimeUnit(TimeUnit timeUnit)

Methods inherited from class java.lang.Thread

activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, run, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Field Detail

input

protected String input

Input value of the DataSource

inputParameters

protected Map<String,String> inputParameters

Input parameters of the DataSource

writer

protected gr.uoa.di.madgik.grs.writer.IRecordWriter<gr.uoa.di.madgik.grs.record.Record> writer

The writer to use

fieldDefs

protected gr.uoa.di.madgik.grs.record.field.FieldDefinition[] fieldDefs

The field definition of the writer

filterMask

protected String filterMask

The filter mask that will be applied. If null all available fields will be used.

TimeoutDef

protected static final long TimeoutDef

The default timeout used by the IRecordWriter. Currently set to 60.

See Also:

Constant Field Values

TimeUnitDef

protected static final TimeUnit TimeUnitDef

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

timeout

protected long timeout

timeUnit

protected TimeUnit timeUnit

Constructor Detail

DataSource

public DataSource(String input,
                  Map<String,String> inputParameters)
           throws Exception

Constructor of the abstract class. Used for initialization.

Parameters:

input - input value of the DataSource

inputParameters - input parameters of the DataSource

Throws:

Exception - If the initialization of the DataSource fails

Method Detail

getLocator

public abstract URI getLocator()

Abstract method used to retrieve URI locator of the gRS2

Returns:

A URI locator of the gRS2

setTimeout

public void setTimeout(long timeout)

Parameters:

timeout - the timeout to set

setTimeUnit

public void setTimeUnit(TimeUnit timeUnit)

Parameters:

timeUnit - the timeUnit to set