Package org.firebirdsql.gds.ng.wire

Class WireConnection<T extends IAttachProperties<T>,C extends FbWireAttachment>

java.lang.Object

org.firebirdsql.gds.ng.AbstractConnection<T,C>

org.firebirdsql.gds.ng.wire.WireConnection<T,C>

Type Parameters:

T - Type of attach properties

C - Type of connection handle

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

Direct Known Subclasses:

WireDatabaseConnection, WireServiceConnection

public abstract class WireConnection<T extends IAttachProperties<T>,C extends FbWireAttachment>
extends AbstractConnection<T,C>
implements java.io.Closeable

Class managing the TCP/IP connection and initial handshaking with the Firebird server.

Since:

3.0

Author:

Mark Rotteveel

Field Summary

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

attachProperties

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	WireConnection(T attachProperties)	Creates a WireConnection (without establishing a connection to the server) with the default protocol collection.
protected	WireConnection(T attachProperties, IEncodingFactory encodingFactory, ProtocolCollection protocols)	Creates a WireConnection (without establishing a connection to the server).

Method Summary

Modifier and Type	Method	Description
void	clearAuthData()	Clear authentication data.
void	close()	Closes the TCP/IP connection.
protected abstract C	createConnectionHandle(ProtocolDescriptor protocolDescriptor)	Creates the connection handle for this type of connection.
protected void	finalize()
ClientAuthBlock	getClientAuthBlock()
int	getProtocolArchitecture()
int	getProtocolMinimumType()
int	getProtocolVersion()
XdrStreamAccess	getXdrStreamAccess()
C	identify()	Performs the connection identification phase of the Wire protocol and returns the FbWireDatabase implementation for the agreed protocol.
boolean	isConnected()
int	readNextOperation()	Reads the next operation code.
void	resetSocketTimeout()	Resets the socket timeout to the configured socketTimeout.
void	setSoTimeout(int socketTimeout)	Sets the socket blocking timeout (SO_TIMEOUT) of the socket.
void	socketConnect()	Establishes the TCP/IP connection to serverName and portNumber of this Connection
void	writeDirect(byte[] data)	Writes directly to the OutputStream of the underlying socket.

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

createDbCryptCallback, getAttachObjectName, getAttachProperties, getEncoding, getEncodingDefinition, getEncodingFactory, getPortNumber, getServerName

Methods inherited from class java.lang.Object

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

Constructor Detail

WireConnection

protected WireConnection(T attachProperties)
                  throws java.sql.SQLException

Creates a WireConnection (without establishing a connection to the server) with the default protocol collection.

Parameters:

attachProperties - Attach properties

Throws:

java.sql.SQLException

WireConnection

protected WireConnection(T attachProperties,
                         IEncodingFactory encodingFactory,
                         ProtocolCollection protocols)
                  throws java.sql.SQLException

Creates a WireConnection (without establishing a connection to the server).

Parameters:

attachProperties - Attach properties

encodingFactory - Factory for encoding definitions

protocols - The collection of protocols to use for this connection.

Throws:

java.sql.SQLException

Method Detail

isConnected

public final boolean isConnected()

getProtocolVersion

public final int getProtocolVersion()

getProtocolArchitecture

public final int getProtocolArchitecture()

getProtocolMinimumType

public final int getProtocolMinimumType()

getClientAuthBlock

public final ClientAuthBlock getClientAuthBlock()

setSoTimeout

public final void setSoTimeout(int socketTimeout)
                        throws java.sql.SQLException

Sets the socket blocking timeout (SO_TIMEOUT) of the socket.

This method can also be called if a connection is established

Parameters:

socketTimeout - Value of the socket timeout (in milliseconds)

Throws:

java.sql.SQLException - If the timeout value cannot be changed

resetSocketTimeout

public final void resetSocketTimeout()
                              throws java.sql.SQLException

Resets the socket timeout to the configured socketTimeout. Does nothing if currently not connected.

Throws:

java.sql.SQLException - If the timeout value cannot be changed

socketConnect

public final void socketConnect()
                         throws java.sql.SQLException

Establishes the TCP/IP connection to serverName and portNumber of this Connection

Throws:

java.sql.SQLTimeoutException - If the connection cannot be established within the connect timeout (either explicitly set or implied by the OS timeout of the socket)

java.sql.SQLException - If the connection cannot be established.

getXdrStreamAccess

public final XdrStreamAccess getXdrStreamAccess()

identify

public final C identify()
                 throws java.sql.SQLException

Performs the connection identification phase of the Wire protocol and returns the FbWireDatabase implementation for the agreed protocol.

Specified by:

identify in class AbstractConnection<T extends IAttachProperties<T>,C extends FbWireAttachment>

Returns:

FbWireDatabase

Throws:

java.sql.SQLTimeoutException

java.sql.SQLException

clearAuthData

public final void clearAuthData()

Clear authentication data.

createConnectionHandle

protected abstract C createConnectionHandle(ProtocolDescriptor protocolDescriptor)

Creates the connection handle for this type of connection.

Parameters:

protocolDescriptor - The protocol descriptor selected by the identify phase

Returns:

Connection handle

readNextOperation

public final int readNextOperation()
                            throws java.io.IOException

Reads the next operation code. Skips all WireProtocolConstants.op_dummy codes received.

Returns:

Operation code

Throws:

java.io.IOException - if an error occurs while reading from the underlying InputStream

close

public final void close()
                 throws java.io.IOException

Closes the TCP/IP connection. This is not a normal detach operation.

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface java.io.Closeable

Throws:

java.io.IOException - if closing fails

finalize

protected final void finalize()
                       throws java.lang.Throwable

Overrides:

finalize in class java.lang.Object

Throws:

java.lang.Throwable

writeDirect

public final void writeDirect(byte[] data)
                       throws java.io.IOException

Writes directly to the OutputStream of the underlying socket.

Parameters:

data - Data to write

Throws:

java.io.IOException - If there is no socket, the socket is closed, or for errors writing to the socket.