DBCP, Pool and Collections - Further thoughts

[Steven Elliott <tt...@mac.com>]

In my servlet I changed the Datasource reference to a BasicDataSource
reference.  Now when I try to lookup the BasicDataSource with the following
call:
  BasicDataSource bds = (BasicDataSource) envCtx.lookup("jdbc/EmployeeDB");

I get the same error reported in my previous post but with a Root Cause now
thrown in:

----- Root Cause -----
java.lang.NoClassDefFoundError: org/apache/commons/pool/ObjectPool
        at 
org.apache.commons.dbcp.BasicDataSourceFactory.getObjectInstance(Unknown
Source)
        at 
org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.
java:165)
        at 
javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:304)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:835)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:181)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:822)
        at org.apache.naming.NamingContext.lookup(NamingContext.java:194)
        at AdminLogin.chkIn(AdminLogin.java:72)
        at AdminLogin.doGet(AdminLogin.java:32)
        at AdminLogin.doPost(AdminLogin.java:56)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at 
org.apache.catalina.servlets.InvokerServlet.serveRequest(InvokerServlet.java
:446)
        at 
org.apache.catalina.servlets.InvokerServlet.doPost(InvokerServlet.java:216)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterChain.java:247)
        at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:193)
        at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
va:243)
        at 
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
        at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
        at 
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
        at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
va:190)
        at 
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
        at 
org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:2
46)
        at 
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64)
        at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
        at 
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
        at 
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2343)
        at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180
)
        at 
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
        at 
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.
java:170)
        at 
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64)
        at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170
)
        at 
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64)
        at 
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
        at 
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
64)
        at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
        at 
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
        at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
:174)
        at 
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
        at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
        at 
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
        at 
org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:
1012)
        at 
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1107
)
        at java.lang.Thread.run(Thread.java:496)

If I could get the BasicDataSource reference I could invoke the
setLogWriter() method to try and get some more meaningful output but I can't
even seem to reference the BasicDataSource.

Craig do you have any ideas what the problem may be?  All three jars
(commons-collections, commons-pool and commons-dbcp) are in
$CATALINA_HOME/common/lib.  If I use the standard Tomcat 4.0.3 DataSource
factory with my servlet everything works as it should.  So I am at a loss.

??

Steven 


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