Package org.firebirdsql.gds.ng.jna

Class JnaService

java.lang.Object

org.firebirdsql.gds.ng.AbstractFbAttachment<T>

org.firebirdsql.gds.ng.AbstractFbService<JnaServiceConnection>

org.firebirdsql.gds.ng.jna.JnaService

All Implemented Interfaces:

AutoCloseable, FbAttachment, FbService, JnaAttachment, ExceptionListenable

public final class JnaService
extends AbstractFbService<JnaServiceConnection>
implements JnaAttachment

Implementation of FbService for native client access.

Since:

3.0

Author:

Mark Rotteveel

Field Summary

Fields

Modifier and Type	Field	Description
static final int	STATUS_VECTOR_SIZE

Fields inherited from class org.firebirdsql.gds.ng.AbstractFbService

serviceListenerDispatcher

Fields inherited from class org.firebirdsql.gds.ng.AbstractFbAttachment

connection, exceptionListenerDispatcher

Constructor Summary

Constructors

Constructor	Description
JnaService(JnaServiceConnection connection)

Method Summary

Modifier and Type	Method	Description
protected void	afterAttachActions()	Additional tasks to execute directly after attach operation.
void	attach()	Attach to the attachment type.
protected void	checkConnected()	Checks if the attachment is connected, and throws a SQLException if it isn't connected.
ServiceParameterBuffer	createServiceParameterBuffer()	Creates an empty ServiceParameterBuffer.
ServiceRequestBuffer	createServiceRequestBuffer()
protected void	finalize()
int	getHandle()
com.sun.jna.ptr.IntByReference	getJnaHandle()
int	getNetworkTimeout()	Gets the current network timeout for this attachment.
byte[]	getServiceInfo(ServiceParameterBuffer serviceParameterBuffer, ServiceRequestBuffer serviceRequestBuffer, int maxBufferLength)	Performs a service info request (service query.
protected void	internalDetach()	Actual implementation of service detach.
void	processStatusVector(ISC_STATUS[] statusVector, WarningMessageCallback warningMessageCallback)
void	setNetworkTimeout(int milliseconds)	Sets the network timeout for this attachment.
void	startServiceAction(ServiceRequestBuffer serviceRequestBuffer)	Starts a service action.

Methods inherited from class org.firebirdsql.gds.ng.AbstractFbService

addServiceListener, close, getDescribeServiceRequestBuffer, getServiceInfo, getServiceInformationProcessor, getServiceWarningCallback, removeServiceListener

Methods inherited from class org.firebirdsql.gds.ng.AbstractFbAttachment

addExceptionListener, forceClose, getDatatypeCoder, getEncoding, getEncodingFactory, getServerVersion, getServerVersionInformation, getSynchronizationObject, isAttached, removeExceptionListener, safelyDetach, setAttached, setDetached, setServerVersion

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.firebirdsql.gds.ng.listeners.ExceptionListenable

addExceptionListener, removeExceptionListener

Methods inherited from interface org.firebirdsql.gds.ng.FbAttachment

close, forceClose, getDatatypeCoder, getEncoding, getEncodingFactory, getServerVersion, getSynchronizationObject, isAttached

Field Details

STATUS_VECTOR_SIZE

public static final int STATUS_VECTOR_SIZE

See Also:

• Constant Field Values

Constructor Details

JnaService

public JnaService(JnaServiceConnection connection)

Method Details

createServiceParameterBuffer

public ServiceParameterBuffer createServiceParameterBuffer()

Description copied from interface: FbService

Creates an empty ServiceParameterBuffer.

Attach expects a service parameter buffer to have the version as the first item. This needs to be added explicitly.

Specified by:

createServiceParameterBuffer in interface FbService

Returns:

Service

createServiceRequestBuffer

public ServiceRequestBuffer createServiceRequestBuffer()

Specified by:

createServiceRequestBuffer in interface FbService

Returns:

An empty service request buffer

checkConnected

protected void checkConnected()
                       throws SQLException

Description copied from class: AbstractFbAttachment

Checks if the attachment is connected, and throws a SQLException if it isn't connected.

Specified by:

checkConnected in class AbstractFbAttachment<JnaServiceConnection>

Throws:

SQLException

getServiceInfo

public byte[] getServiceInfo(ServiceParameterBuffer serviceParameterBuffer,
 ServiceRequestBuffer serviceRequestBuffer,
 int maxBufferLength)
                      throws SQLException

Description copied from interface: FbService

Performs a service info request (service query.

Specified by:

getServiceInfo in interface FbService

Parameters:

serviceParameterBuffer - Service parameters (can be null)

serviceRequestBuffer - Service request info

maxBufferLength - Maximum response buffer length to use

Returns:

The response buffer (note: length is the actual length of the response, not maxBufferLength

Throws:

SQLException - For errors retrieving the information.

startServiceAction

public void startServiceAction(ServiceRequestBuffer serviceRequestBuffer)
                        throws SQLException

Description copied from interface: FbService

Starts a service action.

Specified by:

startServiceAction in interface FbService

Parameters:

serviceRequestBuffer - Service action request details

Throws:

SQLException - For errors starting the service action.

attach

public void attach()
            throws SQLException

Description copied from interface: FbAttachment

Attach to the attachment type.

Specified by:

attach in interface FbAttachment

Throws:

SQLException

afterAttachActions

protected void afterAttachActions()
                           throws SQLException

Additional tasks to execute directly after attach operation.

Implementation retrieves service information like server version.

Throws:

SQLException - For errors reading or writing database information.

internalDetach

protected void internalDetach()
                       throws SQLException

Description copied from class: AbstractFbService

Actual implementation of service detach.

Implementations of this method should only be called from AbstractFbService.close(), and should not notify service listeners of the service ServiceListener.detaching(FbService) and ServiceListener.detached(FbService) events.

Specified by:

internalDetach in class AbstractFbService<JnaServiceConnection>

Throws:

SQLException

getHandle

public int getHandle()

Specified by:

getHandle in interface FbAttachment

Specified by:

getHandle in interface FbService

Returns:

The attachment handle value

getJnaHandle

public com.sun.jna.ptr.IntByReference getJnaHandle()

setNetworkTimeout

public void setNetworkTimeout(int milliseconds)
                       throws SQLException

Description copied from interface: FbAttachment

Sets the network timeout for this attachment.

Specified by:

setNetworkTimeout in interface FbAttachment

Parameters:

milliseconds - Timeout in milliseconds; 0 means no timeout. If the attachment doesn't support milliseconds, it should round up to the nearest second.

Throws:

SQLException - If this attachment is closed, the value of milliseconds is smaller than 0, or if setting the timeout fails.

SQLFeatureNotSupportedException - If this attachment doesn't support (changing) the network timeout.

getNetworkTimeout

public int getNetworkTimeout()
                      throws SQLException

Description copied from interface: FbAttachment

Gets the current network timeout for this attachment.

Specified by:

getNetworkTimeout in interface FbAttachment

Overrides:

getNetworkTimeout in class AbstractFbAttachment<JnaServiceConnection>

Returns:

Timeout in milliseconds, 0 means no timeout

Throws:

SQLException - If this attachment is closed

SQLFeatureNotSupportedException - If this attachment doesn't support network timeout

processStatusVector

public void processStatusVector(ISC_STATUS[] statusVector,
 WarningMessageCallback warningMessageCallback)
                         throws SQLException

Throws:

SQLException

finalize

protected void finalize()
                 throws Throwable

Overrides:

finalize in class Object

Throws:

Throwable