Hi Davi,
Thanks, but I'm trying to solve this problem without changing my J2EE
framework... using JNDI,etc...
Do you know any other approach?
Claudio Carvalho.
- Original Message -
From: David Short [EMAIL PROTECTED]
To: 'Tomcat Users List' [EMAIL PROTECTED]
Sent: Friday, July 02, 2004 1:55 PM
Subject: RE: How to use oracle pool instead of using DBCP pool?
Try this.
Here's how I do it using Struts on W2K. Modify names and paths to suit
your
needs.
Upon startup, a listener servlet (ResourceManagerListener) is called (See
listener tag in the included web.xml source).
The listener servlet will create the connection pool based on your web.xml
parameters (See ResourceManagerListener.java). Once started, the listener
servlet initializes an application scope variable (appDataSource), which
when called from your servlets/JSPs will return a DB DataSource object (DB
connection).
--
--
---
In your main servlet:
try
{
DataSource ds = (DataSource)
getServlet().getServletContext().getAttribute(appDataSource);
xxxProcess = new xxxProcessBean();
xxxInfo = new xxxInfoBean();
xxxProcess.setDataSource(ds);
xxxInfo = xxxProcess.getUser(userName, customerId);
}
In your process bean:
public class xxxProcessBean implements Serializable
{
private DataSource dataSource;
/**
* Sets the dataSource property value.
*/
public void setDataSource(DataSource dataSource)
{
this.dataSource = dataSource;
}
public xxxInfoBean getUser(String userName, String customerId)
throws SQLException
{
// Get the user info from the database
Connection conn = dataSource.getConnection();
xxxInfoBean xxxResult = null;
try
{
xxxResult = getUserName(userName, customerId, conn); // Execute
actual SQL statement.
}
finally
{
try
{
conn.close();
conn = null;
}
catch (SQLException e)
{} // Ignore
return xxxResult;
--
--
---
Change MachineNameHere to your machine name.
Change OracleSIDHere to your DB SID.
Change DBUserNameHere to your DB username.
Change DBPasswordHere to your DB password
Change ApplicationNameHere to a meaningful application designator.
Change xxx to your object name.
Copy Oracle's classes12.zip and nls_charset12.zip files (should live in
C:\OraHome\jdbc\lib) to C:\Tomcat\common\lib. Depending on the version of
Tomcat, you may need to rename the .zip files to .jar.
I'll let you read/learn about Struts on your own.
Hoe this helps.
Dave
--
--
---
web.xml
?xml version=1.0 encoding=ISO-8859-1?
!DOCTYPE web-app
PUBLIC -//Sun Microsystems, Inc.//DTD Web Application 2.3//EN
http://java.sun.com//dtd/web-app_2_3.dtd;
web-app
!-- Used by the JSTL I18N actions --
context-param
param-namejavax.servlet.jsp.jstl.fmt.fallbackLocale/param-name
param-valueen/param-value
/context-param
!-- Context parameters for application --
!-- Oracle thin JDBC driver --
!--
param-valuejdbc:oracle:thin:@MachineNameHere:1521:OracleSIDHere/param-val
ue
--
context-param
param-namejdbcURL/param-name
!-- Oracle OCI JDBC driver --
param-valuejdbc:oracle:oci8:@OracleSIDHere/param-value
/context-param
context-param
param-nameuser/param-name
param-valueDBUserNameHere/param-value
/context-param
context-param
param-namepassword/param-name
param-valueDBPasswordHere/param-value
/context-param
context-param
param-namemaxLimit/param-name
param-value50/param-value
/context-param
!--
will create 10 pooled connections.
--
context-param
param-nameminLimit/param-name
param-value10/param-value
/context-param
!-- Filter and listener configurations --
filter
filter-nameaccessControl/filter-name
filter-class
com.ApplicationNameHere.servlets.AccessControlFilter
/filter-class
init-param
param-nameloginPage/param-name
param-value/jsp/login.jsp/param-value
/init-param
/filter
filter-mapping
filter-nameaccessControl/filter-name
url-pattern/protected/*/url-pattern
/filter-mapping
listener
listener-class
com.ApplicationNameHere.servlets.ResourceManagerListener
/listener-class
/listener
!-- Struts Controller servlet --
servlet
servlet-nameaction/servlet-name
servlet-classorg.apache.struts.action.ActionServlet/servlet-class
load-on-startup1/load-on-startup
/servlet
!-- Servlet for handling both servlet and JSP errors --
servlet
servlet-nameerrorDispatcher/servlet-name
servlet
