Hubert Lyczek [
http://community.jboss.org/people/lysy78] created the discussion
"driver-class ignored?"
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http://community.jboss.org/message/619933#619933
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Hello,
My environment is:
1. Java: jdk1.6.0_23
2. AS: jboss-6.0.0.Final
3. Database: MySQL 5.1
In order to connect to database it is needed to configure data source.
I created file mysql-ds.xml, and everything was ok.
But lately decided to use third party driver (different from original:
com.mysql.jdbc.Driver), so I changed xml element driver-class. But nothing expected
happened. So i decided to get the original environment and change value of driver-class
element to something completely stupid: foo.bar.bla.bla.NotExistingDriver. And do you know
what? - my data source was still ok. I didn't believe that.
Then I removed mysql connector jar, and i received exception:
java.lang.ClassNotFoundException: foo.bar.bla.bla.NotExistingDriver
Jboss did not find this class, becouse this class did and still does not exist. But after
adding mysql connector jar to lib directory again, everything was ok again. Did it mean
that this class was found in mysql connector jar? Strange.
This is my mysql-ds.xml:
<datasources>
<local-tx-datasource>
<jndi-name>TestDS</jndi-name>
<connection-url>jdbc:mysql://localhost:3306/test</connection-url>
<driver-class>foo.bar.bla.bla.NotExistingDriver</driver-class>
<user-name>test</user-name>
<password>test</password>
<exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLExceptionSorter</exception-sorter-class-name>
<valid-connection-checker-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLValidConnectionChecker</valid-connection-checker-class-name>
<!--
<new-connection-sql>select * from test</new-connection-sql>
-->
<!-- sql to call on an existing pooled connection when it is obtained from
pool - MySQLValidConnectionChecker is preferred for newer drivers
<check-valid-connection-sql>some arbitrary
sql</check-valid-connection-sql>
-->
<!-- corresponding type-mapping in the standardjbosscmp-jdbc.xml (optional)
-->
<metadata>
<type-mapping>mySQL</type-mapping>
</metadata>
</local-tx-datasource>
</datasources>
So... the question is:
Is the element driver-class ignored by jboss?
Could anyone explain it to me, please?
Thanks in advance
Hubert
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