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com.vaadin.data.util.sqlcontainer.connection.
Class SimpleJDBCConnectionPool
- java.lang.Object
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- com.vaadin.data.util.sqlcontainer.connection.SimpleJDBCConnectionPool
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All Implemented Interfaces:
public class SimpleJDBCConnectionPool extends Object implements JDBCConnectionPoolSimple implementation of the JDBCConnectionPool interface. Handles loading the JDBC driver, setting up the connections and ensuring they are still usable upon release.
See Also:
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Constructor Summary
Constructors Constructor Description SimpleJDBCConnectionPool(String driverName, String connectionUri, String userName, String password)SimpleJDBCConnectionPool(String driverName, String connectionUri, String userName, String password, int initialConnections, int maxConnections)
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Method Summary
All Methods Modifier and Type Method Description voiddestroy()Destroys the connection pool: close() is called an all the connections in the pool, whether available or reserved.
voidreleaseConnection(Connection conn)Releases a connection that was retrieved earlier.
ConnectionreserveConnection()Retrieves a connection.
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Constructor Detail
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SimpleJDBCConnectionPool
public SimpleJDBCConnectionPool(String driverName, String connectionUri, String userName, String password) throws SQLExceptionThrows:
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SimpleJDBCConnectionPool
public SimpleJDBCConnectionPool(String driverName, String connectionUri, String userName, String password, int initialConnections, int maxConnections) throws SQLExceptionThrows:
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Method Detail
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reserveConnection
public Connection reserveConnection() throws SQLExceptionDescription copied from interface:
JDBCConnectionPoolRetrieves a connection.
Specified by:
reserveConnectionin interfaceJDBCConnectionPoolReturns:
a usable connection to the database
Throws:
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releaseConnection
public void releaseConnection(Connection conn)Description copied from interface:
JDBCConnectionPoolReleases a connection that was retrieved earlier. Note that depending on implementation, the transaction possibly open in the connection may or may not be rolled back.
Specified by:
releaseConnectionin interfaceJDBCConnectionPoolParameters:
conn- Connection to be released
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destroy
public void destroy()Description copied from interface:
JDBCConnectionPoolDestroys the connection pool: close() is called an all the connections in the pool, whether available or reserved. This method was added to fix PostgreSQL -related issues with connections that were left hanging 'idle'.
Specified by:
destroyin interfaceJDBCConnectionPool
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