Here is our way:
In:
tomcat/webapps/ROOT/WEB-INF/web.xml
<resource-ref>
<res-ref-name>jdbc/dbsource</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
<listener>
<listener-class>com.yourcompany.LocalConfiguration</listener-
class>
</listener>
The only gotcha with this is that when you upgrade gwt it changes the
web.xml - we just revert it from version control and all works well.
That listener sets up the entire servlet side, including properties &
guice bindings:
public class LocalConfiguration extends AbstractConfiguration {
protected IPropertyManager createPropertyManager(
final ServletContext context) {
return new LocalPropertyManager();
}
public IBindings getBindings() {
return new LocalBindings();
}
}
This allows us to ship different setups to the system depending on
where it's being used (one for hosted mode, production, test, staging
etc).
The datasource is container managed which is why it's defined in the
file.
The other file you will need for hosted mode is:
tomcat/conf/gwt/localhost/ROOT.xml
<Context privileged="true" antiResourceLocking="false"
antiJARLocking="false" debug="1" reloadable="true" path="">
<!-- GWT uses Tomcat 5.0.28 - use the 5.0 "style" for
defining resources -->
<!-- note that you ALSO have to add stuff like commons-
pool, commons-dbcp
and your JDBC driver to the GWTShell classpath -->
<Resource name="jdbc/ToopsterDB" auth="Container"
type="javax.sql.DataSource" />
<ResourceParams name="jdbc/dbsource">
<parameter>
<name>factory</name>
<value>
org.apache.commons.dbcp.BasicDataSourceFactory
</value>
</parameter>
<parameter>
<name>username</name>
<value>YOURDBUSERNAME</value>
</parameter>
<parameter>
<name>password</name>
<value>SECRET</value>
</parameter>
<parameter>
<name>driverClassName</name>
<value>org.postgresql.Driver</value>
</parameter>
<parameter>
<name>url</name>
<value>jdbc:postgresql://URL/DB</value>
</parameter>
</ResourceParams>
</Context>
Let me know if this is useful - it took us a while to get this right,
and we have used it in multiple deployed apps and it works well.
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