de.unikassel.android.sdcframework.persistence
Class DeleteSamplesStrategy

java.lang.Object
  de.unikassel.android.sdcframework.util.AbstractChainWorker<PersistentStorageManager>
      de.unikassel.android.sdcframework.persistence.AbstractDatabaseFullStrategy
          de.unikassel.android.sdcframework.persistence.DeleteSamplesStrategy

All Implemented Interfaces:

DatabaseFullStrategy, ChainWorker<PersistentStorageManager>

public final class DeleteSamplesStrategy
extends AbstractDatabaseFullStrategy

Implementation of a the database full strategy which does delete old samples.

This strategy does delete the configured count of samples in the database. Normally the oldest samples will be selected first, but if configured, the oldest samples with lowest priority will be preferred for deletion.

Field Summary

protected int	countToDelete The count of samples to delete
protected boolean	lowestPriorityFirst The count of samples to delete

Constructor Summary

DeleteSamplesStrategy(int countToDelete, boolean lowestPriorityFirst)
Constructor

Method Summary

int	getCountToDelete() Getter for the record count to delete
Object	isDeletingPriorityBased() Getter for the priority basted deletion flag
boolean	process(PersistentStorageManager storageManager) Processing method of the worker

Methods inherited from class de.unikassel.android.sdcframework.util.AbstractChainWorker

doWork, getSuccessor, setSuccessor, withSuccessor

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.unikassel.android.sdcframework.util.facade.ChainWorker

doWork, getSuccessor, setSuccessor, withSuccessor

Field Detail

countToDelete

protected final int countToDelete

The count of samples to delete

lowestPriorityFirst

protected final boolean lowestPriorityFirst

The count of samples to delete

Constructor Detail

DeleteSamplesStrategy

public DeleteSamplesStrategy(int countToDelete,
                             boolean lowestPriorityFirst)

Constructor

Parameters:

countToDelete - the count of samples to delete

lowestPriorityFirst - if true the oldest samples with lowest priority will be deleted first

Method Detail

getCountToDelete

public final int getCountToDelete()

Getter for the record count to delete

Returns:

the the record count to delete

process

public final boolean process(PersistentStorageManager storageManager)

Description copied from class: AbstractChainWorker

Processing method of the worker

Overrides:

process in class AbstractDatabaseFullStrategy

Parameters:

storageManager - the client

Returns:

true if successful

isDeletingPriorityBased

public Object isDeletingPriorityBased()

Getter for the priority basted deletion flag

Returns:

true if deletion is done for samples with lowest priority first. Otherwise it is done for the oldest samples