org.gcube.documentstore.records.aggregation

Class BufferAggregationScheduler

java.lang.Object

org.gcube.documentstore.records.aggregation.AggregationScheduler

org.gcube.documentstore.records.aggregation.BufferAggregationScheduler

All Implemented Interfaces:

Runnable

public class BufferAggregationScheduler
extends AggregationScheduler

Author:

Luca Frosini (ISTI - CNR) http://www.lucafrosini.com/ This class implements a Simple Buffer with timeout strategy. It buffer a predefined number of Records before invoking a persistence.

Field Summary

Fields

Modifier and Type	Field and Description
protected long	firstBufferedTime
protected boolean	firstOfBuffer
protected static int	MAX_RECORDS_NUMBER Define the MAX number of Record to buffer.
protected static long	OLD_RECORD_MAX_TIME_ELAPSED The Max amount of time elapsed form last record before after that the buffered record are persisted even if TODO Get from configuration

Fields inherited from class org.gcube.documentstore.records.aggregation.AggregationScheduler

bufferedRecords, DELAY, INITIAL_DELAY, logger, persistenceExecutor, scheduler, TIME_UNIT, totalBufferedRecords

Constructor Summary

Constructors

Constructor and Description
BufferAggregationScheduler(PersistenceExecutor persistenceExecutor)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	isTimeToPersist()
protected void	schedulerSpecificClear()

Methods inherited from class org.gcube.documentstore.records.aggregation.AggregationScheduler

aggregate, aggregate, clear, flush, getAggregatedRecord, instantiateAggregatedRecord, madeAggregation, newInstance, reallyFlush, run

Methods inherited from class java.lang.Object

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

Field Detail

MAX_RECORDS_NUMBER

protected static final int MAX_RECORDS_NUMBER

Define the MAX number of Record to buffer. TODO Get from configuration

See Also:

Constant Field Values

OLD_RECORD_MAX_TIME_ELAPSED

protected static final long OLD_RECORD_MAX_TIME_ELAPSED

The Max amount of time elapsed form last record before after that the buffered record are persisted even if TODO Get from configuration

See Also:

Constant Field Values

firstOfBuffer

protected boolean firstOfBuffer

firstBufferedTime

protected long firstBufferedTime

Constructor Detail

BufferAggregationScheduler

public BufferAggregationScheduler(PersistenceExecutor persistenceExecutor)

Method Detail

schedulerSpecificClear

protected void schedulerSpecificClear()

Specified by:

schedulerSpecificClear in class AggregationScheduler

isTimeToPersist

public boolean isTimeToPersist()

Specified by:

isTimeToPersist in class AggregationScheduler