org.gvsig.fmap.dal.resource.db

Class AbstractDBResourceBlocker

java.lang.Object

org.gvsig.fmap.dal.resource.spi.AbstractResource

org.gvsig.fmap.dal.resource.db.AbstractDBResourceBlocker

All Implemented Interfaces:

DBResource, Resource, ResourceProvider, Observable, WeakReferencingObservable

public abstract class AbstractDBResourceBlocker
extends AbstractResource
implements DBResource

Abstract Data Base Resource implementation that prevents the concurrent access.

Field Summary

Fields inherited from class org.gvsig.fmap.dal.resource.spi.AbstractResource

lock, multiResourcelock

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractDBResourceBlocker(DBResourceParameters parameters) Default constructor

Method Summary

Methods

Modifier and Type	Method and Description
void	connect() Establish connection to data base
protected abstract void	connectToDB() final implementation method to Establish connection to data base Called from get()
protected boolean	equals(Comparable v1, Comparable v2)
Object	get() Return a connection to the data base.
Object	getConnection() Return a connection to the data base.
protected abstract Object	getTheConnection() final implementation method to get a connection to data base Called from connect() This method is called with the connection establish
boolean	isThis(ResourceParameters parameters) Check if parameters is the same for this resource.

Methods inherited from class org.gvsig.fmap.dal.resource.spi.AbstractResource

addConsumer, addObserver, addObservers, closeRequest, deleteObserver, deleteObservers, execute, executeBegins, executeEnds, getConsumerAt, getConsumersCount, getData, getLastTimeOpen, getLastTimeUsed, getName, getParameters, inUse, isOpen, notifyChanges, notifyClose, notifyDispose, notifyObserver, notifyOpen, openCount, performExecution, prepare, prepare, removeConsumer, setData, updateLastTimeOpen, updateLastTimeUsed

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.gvsig.fmap.dal.resource.db.DBResource

isConnected

Methods inherited from interface org.gvsig.fmap.dal.resource.Resource

addConsumer, closeRequest, execute, getConsumersCount, getData, getLastTimeOpen, getLastTimeUsed, getName, getParameters, inUse, isOpen, openCount, removeConsumer, setData

Constructor Detail

AbstractDBResourceBlocker

protected AbstractDBResourceBlocker(DBResourceParameters parameters)
                             throws InitializeException

Default constructor

Parameters:

parameters -

Throws:

InitializeException

Method Detail

get

public Object get()
           throws AccessResourceException

Return a connection to the data base.
Connect to the Data Base if is needed

Specified by:

get in interface Resource

Specified by:

get in class AbstractResource

Returns:

connection to the data base

Throws:

AccessResourceException - if there is an error while accessing the resource

getConnection

public Object getConnection()
                     throws AccessResourceException

Return a connection to the data base.
Connect to the Data Base if is needed

Returns:

connection to the data base

Throws:

AccessResourceException

See Also:

get()

connect

public final void connect()
                   throws DataException

Establish connection to data base

Throws:

DataException

isThis

public boolean isThis(ResourceParameters parameters)
               throws ResourceException

Check if parameters is the same for this resource.

Note: override this method to add checks for specify final implementation parameters

Specified by:

isThis in interface ResourceProvider

Throws:

ResourceException

See Also:

ResourceProvider.isThis(ResourceParameters)

equals

protected boolean equals(Comparable v1,
             Comparable v2)

connectToDB

protected abstract void connectToDB()
                             throws DataException

final implementation method to Establish connection to data base
Called from get()

Throws:

DataException

getTheConnection

protected abstract Object getTheConnection()
                                    throws DataException

final implementation method to get a connection to data base
Called from connect()

This method is called with the connection establish

Throws:

DataException