On Mon, Jul 14, 2014 at 2:10 PM, Andrew Carr <andrewlanec...@gmail.com> wrote:
> Hi, > > On this page > http://tomcat.apache.org/tomcat-8.0-doc/jndi-datasource-examples-howto.html > there is an example of a global JDBC resource being defined. There is also > a comment saying "This author has not had success here, although others > have reported so. Clarification would be appreciated here." > Not sure about the why behind this comment, maybe someone else can comment on the comment :) You should be able to define global resources though. If global resources don't work for you then it probably due to a configuration error. Most often, people forget to add resource links. > > I defined the global postgres jdbc definition, and then I add a resource > link in the two web application contexts that I wanted to use the > datasource with, and this resolved the issue. > Sounds right. > > If I did not define the resource links in the context elements I would > receive an error that the driver was not present. > That's correct. A global resource is not exposed to any applications by default. You need to define resource links to indicate which applications can see a given global resource. > > Is this the correct approach to solving this problem? It's one correct way. You can also just define a Resource tag directly in your context. See here. http://tomcat.apache.org/tomcat-8.0-doc/config/context.html#Resource_Definitions The difference being a global resource can be shared across multiple applications, while a resource defined directly in the context (even in conf/context.xml) is specific to that application. > If so, should I > document it this way? Basically: > > 1. Define the global JDBC resource > 2. Define the resource references in the contexts you would like to share > the datasource with. > Does this documentation link help to clarify? http://tomcat.apache.org/tomcat-8.0-doc/jndi-resources-howto.html#Global_configuration If not and you feel there's room for improvement, I think the general suggestion is that patches are welcome. Dan
