11.11.3. Class OPLConnectionPoolDataSource
OPLConnectionPoolDataSource Classes OPLConnectionPoolDataSource

A ConnectionPoolDataSource object is a factory for PooledConnection objects. An object that implements this interface will typically be registered with a JNDI service.
11.11.3.1. Synopsis

public class OPLConnectionPoolDataSource extends OPLDataSource implements ConnectionPoolDataSource,Serializable,Referenceable,ConnectionEventListener {
Public Constructors
public OPLConnectionPoolDataSource();
Public Methods
public void finalize() throws java.lang.Throwable;
public OPLPoolStatistic get_statistics();
public OPLPoolStatistic[] getAll_statistics();
public void close() throws java.sql.SQLException;
public void connectionClosed(javax.sql.ConnectionEvent event);
public void connectionErrorOccurred(javax.sql.ConnectionEvent event);
public Reference getReference() throws javax.naming.NamingException;
public void fill() throws java.sql.SQLException;
public PooledConnection getPooledConnection() throws java.sql.SQLException;
public PooledConnection getPooledConnection(java.lang.String _user,
java.lang.String _password)
throws java.sql.SQLException;
public int getMinPoolSize();
public void setMinPoolSize(int parm) throws java.sql.SQLException;
public int getMaxPoolSize();
public void setMaxPoolSize(int parm) throws java.sql.SQLException;
public int getInitialPoolSize();
public void setInitialPoolSize(int parm) throws java.sql.SQLException;
public int getMaxIdleTime();
public void setMaxIdleTime(int parm) throws java.sql.SQLException;
public int getPropertyCycle();
public void setPropertyCycle(int parm);
public int getMaxStatements();
public void setMaxStatements(int parm) throws java.sql.SQLException;
}

Inheritance Path
java.lang.Object

openlink.javax.OPLDataSource

openlink.javax.OPLConnectionPoolDataSource

11.11.3.2. Members
11.11.3.2.1. Method close()
close Methods close

Synopsis: public void close() throws java.sql.SQLException;

Exceptions

java.sql.SQLException

if a database-access error occurs

Physically close all the pooled connections in the cache and free all the resources

11.11.3.2.2. Method connectionClosed(ConnectionEvent)
connectionClosed Methods connectionClosed

Synopsis: public void connectionClosed(javax.sql.ConnectionEvent event);

Parameters

event - an event object describing the source of the event

Invoked when the application calls close() on its representation of the connection.

11.11.3.2.3. Method connectionErrorOccurred(ConnectionEvent)
connectionErrorOccurred Methods connectionErrorOccurred

Synopsis: public void connectionErrorOccurred(javax.sql.ConnectionEvent event);

Parameters

event - an event object describing the source of the event

Invoked when a fatal connection error occurs, just before an SQLException is thrown to the application.

11.11.3.2.4. Method fill()
fill Methods fill

Synopsis: public void fill() throws java.sql.SQLException;

Exceptions

java.sql.SQLException

if a error occurs

Fills the cache with PooledConnections for later use. Ignored if the MinPoolSize is 0. It is usually called when the OPLConnectionPoolDataSource is created via JNDI calls.

11.11.3.2.5. Method get_statistics()
get_statistics Methods get_statistics

Synopsis: public OPLPoolStatistic get_statistics();

Return the cache statistics for the OPLConnectionPoolDataSource

11.11.3.2.6. Method getAll_statistics()
getAll_statistics Methods getAll_statistics

Synopsis: public OPLPoolStatistic[] getAll_statistics();

Return an array of the cache statistics for the all created OPLConnectionPoolDataSources

11.11.3.2.7. Method getInitialPoolSize()
getInitialPoolSize Methods getInitialPoolSize

Synopsis: public int getInitialPoolSize();

Get the number of physical connections the pool will contain when it is created

11.11.3.2.8. Method getMaxIdleTime()
getMaxIdleTime Methods getMaxIdleTime

Synopsis: public int getMaxIdleTime();

Get the number of seconds that a physical connection will remain unused in the pool before the connection is closed. Zero ( 0 ) indicates no limit.

11.11.3.2.9. Method getMaxPoolSize()
getMaxPoolSize Methods getMaxPoolSize

Synopsis: public int getMaxPoolSize();

Get the maximum number of physical connections the pool will be able contain. Zero ( 0 ) indicates no maximum size.

11.11.3.2.10. Method getMaxStatements()
getMaxStatements Methods getMaxStatements

Synopsis: public int getMaxStatements();

Get the total number of statements that the pool will keep open. Zero ( 0 ) indicates that caching of statements is disabled.

11.11.3.2.11. Method getMinPoolSize()
getMinPoolSize Methods getMinPoolSize

Synopsis: public int getMinPoolSize();

Get the minimum number of physical connections the pool will keep available at all times. Zero ( 0 ) indicates that connections will be created as needed.

11.11.3.2.12. Method getPooledConnection()
getPooledConnection Methods getPooledConnection

Synopsis: public PooledConnection getPooledConnection() throws
java.sql.SQLException;

Exceptions

java.sql.SQLException

if a database-access error occurs

Attempt to establish a database connection.

11.11.3.2.13. Method getPooledConnection(String, String)
getPooledConnection Methods getPooledConnection

Synopsis: public PooledConnection getPooledConnection(java.lang.String _user,
java.lang.String _password)
throws java.sql.SQLException;

Parameters

user - the database user on whose behalf the Connection is being made

password - the user's password

return - a PooledConnection to the database

Exceptions

java.sql.SQLException

if a database-access error occurs

Attempt to establish a database connection.

11.11.3.2.14. Method getPropertyCycle()
getPropertyCycle Methods getPropertyCycle

Synopsis: public int getPropertyCycle();

Get the interval, in seconds, that the pool will wait before enforcing the current policy defined by the values of the above connection pool properties

11.11.3.2.15. Method setInitialPoolSize(int)
setInitialPoolSize Methods setInitialPoolSize

Synopsis: public void setInitialPoolSize(int parm)
throws java.sql.SQLException;

Parameters

parm - a number of physical connections

Exceptions

java.sql.SQLException

if an error occurs

Set the number of physical connections the pool should contain when it is created

11.11.3.2.16. Method setMaxIdleTime(int)
setMaxIdleTime Methods setMaxIdleTime

Synopsis: public void setMaxIdleTime(int parm) throws java.sql.SQLException;

Parameters

parm - a number of seconds

Exceptions

java.sql.SQLException

if an error occurs

Set the number of seconds that a physical connection should remain unused in the pool before the connection is closed. Zero ( 0 ) indicates no limit.

11.11.3.2.17. Method setMaxPoolSize(int)
setMaxPoolSize Methods setMaxPoolSize

Synopsis: public void setMaxPoolSize(int parm) throws java.sql.SQLException;

Parameters

parm - a maximum number of physical connections

Exceptions

java.sql.SQLException

if an error occurs

Set the maximum number of physical conections that the pool should contain. Zero ( 0 ) indicates no maximum size. The default value is 0 .

11.11.3.2.18. Method setMaxStatements(int)
setMaxStatements Methods setMaxStatements

Synopsis: public void setMaxStatements(int parm) throws java.sql.SQLException;

Parameters

parm - a total number of statements

Exceptions

java.sql.SQLException

if an error occurs

Set the total number of statements that the pool should keep open. Zero ( 0 ) indicates that caching of statements is disabled.

11.11.3.2.19. Method setMinPoolSize(int)
setMinPoolSize Methods setMinPoolSize

Synopsis: public void setMinPoolSize(int parm) throws java.sql.SQLException;

Parameters

parm - a minimum number of physical connections

Exceptions

java.sql.SQLException

if an error occurs

Set the number of physical connections the pool should keep available at all times. Zero ( 0 ) indicates that connections should be created as needed The default value is 0 .

11.11.3.2.20. Method setPropertyCycle(int)
setPropertyCycle Methods setPropertyCycle

Synopsis: public void setPropertyCycle(int parm);

Parameters

parm - an interval (in seconds)

Set the interval, in seconds, that the pool should wait before enforcing the current policy defined by the values of the above connection pool properties