Package org.eclnt.ccee.db.dofw

Class DBConnectionPool

java.lang.Object

org.eclnt.ccee.db.dofw.DBConnectionPool

All Implemented Interfaces:

ICCEEConstants

public class DBConnectionPool
extends Object
implements ICCEEConstants

Simple connection pool implementation.

Connections are pooled per context name and tenant by default.

Connections are rolled back when added to the pool - and the are checked before being transferred from the pool to the caller.

Field Summary

Fields inherited from interface org.eclnt.ccee.ICCEEConstants

AND, ASC, AVG, BETWEEN, BRC, BRO, COUNT, DEFAULT_CONTEXT, DESC, FUNCTIONRESULT, GREATER, GREATEREQUAL, IN, IS, ISNOT, LIKE, LL_DBG, LL_ERR, LL_INF, LL_WAR, LOWER, LOWEREQUAL, MAX, MIN, NULL, OR, ORDERBY, QPFUNCTION_LOWER, QPFUNCTION_UPPER, SUM

Constructor Summary

Constructors

Constructor	Description
DBConnectionPool()

Method Summary

Modifier and Type	Method	Description
static void	addToPool(String contextName, Connection conn)	Add a connection to the pool for the given context name.
static void	closeAllConnections()	Close all connections in all pools.
static void	initAccessKeyBuilder(IDBConnectionPoolAccessKeyBuilder accessKeyBuilder)	Pass own implementation of IDBConnectionPoolAccessKeyBuilder that is used instead of the default one.
static void	initConnectionChecker(IDBConnectionPoolConnectionChecker connectionChecker)	Pass own implementation of IDBConnectionPoolConnectionChecker that is used instead of the default one.
static Connection	pickFromPool(String contextName)	Pick a connection from the pool for the given context name.

Methods inherited from class java.lang.Object

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

Constructor Details

DBConnectionPool

public DBConnectionPool()

Method Details

initConnectionChecker

public static void initConnectionChecker(IDBConnectionPoolConnectionChecker connectionChecker)

Pass own implementation of IDBConnectionPoolConnectionChecker that is used instead of the default one.

initAccessKeyBuilder

public static void initAccessKeyBuilder(IDBConnectionPoolAccessKeyBuilder accessKeyBuilder)

Pass own implementation of IDBConnectionPoolAccessKeyBuilder that is used instead of the default one.

addToPool

public static void addToPool(String contextName,
 Connection conn)

Add a connection to the pool for the given context name.

pickFromPool

public static Connection pickFromPool(String contextName)

Pick a connection from the pool for the given context name. If no connection is available, null is returned. The caller needs to check for null and create a new connection in this case.

closeAllConnections

public static void closeAllConnections()

Close all connections in all pools.