File Information
Library: Data/PostgreSQL
Package: PostgreSQL
Header: Poco/Data/PostgreSQL/SessionHandle.h
Description
PostgreSQL connection(session) handle
Member Summary
Member Functions: cancel, clientEncoding, commit, connect, connectionDefaultParameters, connectionParameters, connectionString, deallocatePreparedStatement, disconnect, hasTransactionIsolation, isAsynchronousCommit, isAutoCommit, isConnected, isTransaction, lastError, libpqVersion, mutex, operator PGconn *, protocoVersion, reset, rollback, serverProcessID, serverVersion, setAsynchronousCommit, setAutoCommit, setTransactionIsolation, startTransaction, transactionIsolation
Constructors
SessionHandle
explicit SessionHandle();
Creates session handle
Destructor
~SessionHandle
~SessionHandle();
Destroy handle, close connection
Member Functions
cancel
void cancel();
Attempts to cancel in-process statements
clientEncoding
std::string clientEncoding() const;
returns the client encoding
commit
void commit();
Commit transaction
connect
void connect(
const std::string & aConnectionString
);
Connect to server
connect
void connect(
const char * aConnectionString
);
connect
void connect(
const char * aHost,
const char * aUser,
const char * aPassword,
const char * aDatabase,
unsigned short aPort,
unsigned int aConnectionTimeout
);
connectionDefaultParameters 
static SessionParametersMap connectionDefaultParameters();
returns the default parameters used on a connection
connectionParameters
SessionParametersMap connectionParameters() const;
returns the parameters used on the connection
connectionString 
std::string connectionString() const;
returns the string used to connect
deallocatePreparedStatement
void deallocatePreparedStatement(
const std::string & aPreparedStatementToDeAllocate
);
deallocates a previously prepared statement
disconnect
void disconnect();
Close connection
hasTransactionIsolation
bool hasTransactionIsolation(
Poco::UInt32 aTI
);
Returns true iff the transaction isolation level corresponding to the supplied bitmask is supported.
isAsynchronousCommit
bool isAsynchronousCommit();
is the connection in Asynchronous commit mode?
isAutoCommit
bool isAutoCommit();
is the connection in auto commit mode?
isConnected
bool isConnected() const;
is a connection established?
isTransaction
bool isTransaction();
Returns true iff a transaction is a transaction is in progress, false otherwise.
lastError
std::string lastError() const;
last error on the connection
libpqVersion
int libpqVersion() const;
returns the version of libpq
mutex
Poco::FastMutex & mutex();
Get the sessionHandle mutex to protect the connection pointer
operator PGconn *
operator PGconn * ();
Get the PostgreSQL connection pointer
protocoVersion
int protocoVersion() const;
the protocol version between the client and the server
reset
bool reset();
reset the connection
rollback
void rollback();
Rollback trabsaction
serverProcessID
int serverProcessID() const;
the process ID of the remotee server process
serverVersion
int serverVersion() const;
remote server version
setAsynchronousCommit
void setAsynchronousCommit(
bool aShouldAsynchronousCommit = true
);
is the connection in Asynchronous commit mode?
setAutoCommit
void setAutoCommit(
bool aShouldAutoCommit = true
);
is the connection in auto commit mode?
setTransactionIsolation
void setTransactionIsolation(
Poco::UInt32 aTI
);
Sets the transaction isolation level.
startTransaction
void startTransaction();
Start transaction
transactionIsolation
Poco::UInt32 transactionIsolation();
Returns the transaction isolation level.