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From "Alessandro Pizzolotto" <...@extraweb.it>
Subject Re: ClassCastException
Date Wed, 03 Oct 2001 15:10:37 GMT
hehehe
if i use this class:
tyrex.jdbc.xa.EnabledDataSource
instead
javax.sql.DataSource
the program works fine
the problem is that EnableDataSource implements javax.sql.DataSource but i
can't cast javax.sql.DataSource.
why ???

Alessandro
----- Original Message -----
From: "Will Stranathan" <will@thestranathans.com>
To: <tomcat-dev@jakarta.apache.org>
Sent: Wednesday, October 03, 2001 3:04 PM
Subject: Re: ClassCastException


> Can we see the appropriate parts of server.xml and web.xml?
>
> Will Stranathan
>
> Alessandro Pizzolotto wrote:
>
> > this code
> >
> > javax.naming.Context ctx = new javax.naming.InitialContext();
> > javax.naming.Context cto =
(javax.naming.Context)ctx.lookup("java:/comp/env");
> > javax.sql.DataSource ds =
(javax.sql.DataSource)cto.lookup("jdbc/domus");
> >
> > produce this error
> >
> > java.lang.ClassCastException: tyrex.jdbc.xa.EnabledDataSource
> >  at org.apache.jsp.ricerca3$jsp._jspService(ricerca3$jsp.java:74)
> >  at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107)
> >  at javax.servlet.http.HttpServlet.service(HttpServlet.java:1264)
> >  at
org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.ja
va:201)
> >  at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:381)
> >  at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:473)
> >  at javax.servlet.http.HttpServlet.service(HttpServlet.java:1264)
> >  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:215)
> >  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.StandardContext.invoke(StandardContext.java:2366)
> >  at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164
)
> >  at
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:5
66)
> >  at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:462)
> >  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
:163)
> >  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:
1005)
> >  at
org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1098
)
> >  at java.lang.Thread.run(Thread.java:484)
> >
> > the code not get the cast in DataSource
> > why ?
> > tanks
> > Alessadro
> >
> >
>
>
>


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