1 Reply Latest reply on Aug 2, 2013 3:24 PM by El Noobie

    Getting Up & Running with MySQL, DataNucleus & JDO

    El Noobie Newbie

      Warning:  I am a complete newbie with JBoss AS7.

       

      The Goal & Tools

      My primary goal is to get a complete service up and running locally (at first).  Later I will worry about moving things to OpenShift and playing around with that.  The key tool for all of this is just going to be use of Maven 3.x in order to get things built & deployed locally.  Therefore I'd like to stick with the standard Maven conventions for everything.

       

      Where I Am Sucessful

       

      1. Able to get the core of everything working with JSF, some REST & SOAP WS, XML/JSON setup, etc.
      2. Able to get a bunch of OSGi stuff running
      3. Figured out a bunch of logging issues so I can get Logback with SLF4J running
      4. No issues deploying/undeploying anything via Maven
      5. Using Liquibase for the basic database setup which was really easy
      6. All is good with getting MySQL up, recognized and tested via the web console
        1. Added MySQL as a module
        2. Added DataNucleus as a module
        3. Defiend 2 data sources:  1 with JPA, 1 without

       

      I was able to follow the basics with the help of a couple web articles:

       

       

      Where I Am Stuck

      So now I am starting to get to the recognition of the data source(s) within JBoss and hoping to move quickly onto the DataNucleus and JDO end of things.  However, I cannot get the data source reference via a context lookup without getting a "Name Not Found" exception.  I really want to get this piece-by-piece to understand the inner workings and therefore I don't want to skip this step before moving on to the setup of persistence.xml and whatnot.

       

      My data sources are setup like this in standalone.xml:

       

       

      <datasource jta="false" jndi-name="java:/datasources/testMeDS" pool-name="testMeDS-pool" enabled="true" use-java-context="true" use-ccm="true">
      ...
      
      </datasource>
      
      
      
      <datasource jta="true" jndi-name="java:/datasources/testMeDS-JTA" pool-name="testMeDS-JTA-pool" enabled="true" use-java-context="true" use-ccm="true">
      ...
      
      </datasource>
      
      

       

      In my simple, little JAX-RS setup I created a DataSourceService class that looks like this:

       

       

      @Path ("/dstest")
      public class DataSourceService {
      
        @Context
        HttpServletRequest request;
      
        @GET
        @Produces({MediaType.APPLICATION_XML})
        public DSTestDocument getDataSourceTestResults() {
          try {
            // Obtain our environment naming context
            InitialContext initCtx = new InitialContext();
            javax.naming.Context envCtx = (javax.naming.Context) initCtx.lookup("java:comp/env");
      
      
            // Look up our data source
            Object lol = envCtx.lookup("java:/datasources/testMeDS");
          } catch (Exception e) {
            e.printStackTrace(System.err);
          }
      
          // build the document
          // ...
          // do some logging
          // ...
          return theResopnseDocumentObject;
        }
      }
      

       

      I get the following exception:

       

      [stderr] (http--0.0.0.0-8080-1) javax.naming.NameNotFoundException: jboss/datasources/testMeDS -- service jboss.naming.context.java.module.ElTesting."webservices-1.0-SNAPSHOT".jboss.datasources.testMeDS

            at org.jboss.as.naming.ServiceBasedNamingStore.lookup(ServiceBasedNamingStore.java:97)

            at org.jboss.as.naming.NamingContext.lookup(NamingContext.java:178)

            at org.jboss.as.naming.NamingContext.lookup(NamingContext.java:214)

       

       

      Can someone help me out so I can move on to the next steps?

       

      I know that I won't follow steps 5 and 6 from the one article listed above exactly - and I will tackle that mountain when I get to it. I know I'll need to setup the persistence.xml and other things but I am not even going to bother to try until I get this part resolved.  I want to make sure I can connect to the data source and do some things manually before that.  That gives me an opportunity to play with more CDI and various other things utilizing JBoss to get a better understanding of the options opened and internal workings.

       

      Thanks in advance!

        • 1. Re: Getting Up & Running with MySQL, DataNucleus & JDO
          El Noobie Newbie

          Already got it!

          Silly error on my part.  

           

           

          @Path ("/dstest")
          public class DataSourceService {
           
            @Context
            HttpServletRequest request;
           
            @GET
            @Produces({MediaType.APPLICATION_XML})
            public DSTestDocument getDataSourceTestResults() {
              try {
                // Obtain our environment naming context
                InitialContext initCtx = new InitialContext(); 
           
                // Look up our data source
                Object lol = initCtx.lookup("java:/datasources/testMeDS");
              } catch (Exception e) {
                e.printStackTrace(System.err);
              }
           
              // build the document
              // ...
              // do some logging
              // ...
              return theResopnseDocumentObject;
            }
          }
          

           

           

          Does anyone have any suggestions on next steps or anything before I move on to attempting DataNuclues with JDO?  Even some links for that in cooperation with Maven will be very helpful!   Thanks to everyone who took a look!