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Thread: RE: [Mondrian] Re: Mondrian in my Java Program

  1. #1
    Julian Hyde Guest

    Default RE: [Mondrian] Re: Mondrian in my Java Program

    The 'Enclosure class mondrian.olap.MondrianDef not found' error is not
    one I've seen before. I don't think it means that
    mondrian.olap.MondrianDef.class is not on the classpath -- I think that
    there is an error in the format of your <catalog>.xml file. For
    instance, if you try running with foodmart.xml, I think you'll find that
    error goes away.

    Julian


    _____

    From: mondrian-bounces (AT) pentaho (DOT) org [mailto:mondrian-bounces (AT) pentaho (DOT) org]
    On Behalf Of Laurent Valdes
    Sent: Saturday, March 03, 2007 8:44 AM
    To: mondrian (AT) pentaho (DOT) org
    Subject: [Mondrian] Re: Mondrian in my Java Program


    Sorry, I tested my JDBC string several times.
    Enclosure class mondrian.olap.MondrianDef not found.
    and the class does exist since I have done Class.forClass to check for
    its existence.

    Have a good day !



    2007/3/2, Laurent Valdes < valderama (AT) gmail (DOT) com
    <mailto:valderama (AT) gmail (DOT) com> >:

    Currently I have the following:

    OLAPTest ot=new OLAPTest();
    try{
    ot.initialize();
    }
    catch(Exception e)
    {
    System.out.println("Erreur initialisation: ");
    e.printStackTrace();
    }

    Connection connection = DriverManager.getConnection(
    "Provider=mondrian;" +
    "Jdbc=" + ot.jdbcUri + ";" +
    "Catalog="+ "" + ot.catalogUrl.toString(),
    null,
    false);

    But I get the following:


    Exception in thread "main" org.eigenbase.xom.AssertFailure: Enclosure
    class mondrian.olap.MondrianDef not found.
    at org.eigenbase.xom.DOMElementParser.getEnclosureClass(Unknown
    Source)
    at org.eigenbase.xom.DOMElementParser.classArray(Unknown Source)
    at org.eigenbase.xom.DOMElementParser.getArray(Unknown Source)
    at mondrian.olap.MondrianDef$Schema.<init>(
    MondrianDef.java:104)




    2007/3/2, Laurent Valdes <valderama (AT) gmail (DOT) com
    <mailto:valderama (AT) gmail (DOT) com> >:


    Hi everybody,

    How are you ?
    I'm absolutely new in this mailing-list.

    I'm writing some java programs to automate decisions in my company, and
    was trying to use Mondrian as it is possible to use JDBC: from a Java
    program.

    My first question is: How do I execute MDX queries from Java code ?
    My second question is: Does the client need to keep separated from the
    ROLAP server ?
    If no, how can I do queries ?
    If yes, how can I start the server ? and then how do I make OLAP queries
    ?

    Many thanks for your help !

    Best regards,

    Laurent.


    --

  2. #2
    Julian Hyde Guest

    Default RE: [Mondrian] Re: Mondrian in my Java Program

    Here's the code it is executing:

    /**
    * Returns the enclosure class associated with clazz, or falls back
    on
    * the fixed enclosure if none can be found.
    */
    private Class getEnclosureClass(Class clazz)
    {
    // Instead of using a fixed enclosure, derive it from the given
    Class.
    // If we can't figure it out, just use the given enclosure
    instead.
    Class thisEnclosure = enclosure;
    String className = clazz.getName();
    int dollarPos = className.indexOf('$');
    if (dollarPos >= 0) {
    String encName = className.substring(0, dollarPos);
    try {
    thisEnclosure = Class.forName(encName);
    } catch (ClassNotFoundException ex) {
    throw new AssertFailure("Enclosure class " + encName
    + " not found.");
    }
    }
    return thisEnclosure;
    }

    Apparently the class loader can't do
    Class.forName("mondrian.olap.MondrianDef"). This is strange considering
    mondrian.olap.MondrianDef is on the call stack!

    Seems that something is up with the class loader. What java version and
    jvm are you using? What is your classpath? Are you using the default
    class loader? Are you running in a container such as jboss or tomcat?

    Julian



    _____

    From: mondrian-bounces (AT) pentaho (DOT) org [mailto:mondrian-bounces (AT) pentaho (DOT) org]
    On Behalf Of Laurent Valdes
    Sent: Saturday, March 03, 2007 4:16 PM
    To: Mondrian developer mailing list
    Subject: Re: [Mondrian] Re: Mondrian in my Java Program


    In any cases I think it is a bug that should be corrected.
    I will have a look a this.

    Laurent


    2007/3/3, Julian Hyde <julianhyde (AT) speakeasy (DOT) net
    <mailto:julianhyde (AT) speakeasy (DOT) net> >:

    The 'Enclosure class mondrian.olap. MondrianDef not found' error is not
    one I've seen before. I don't think it means that
    mondrian.olap.MondrianDef.class is not on the classpath -- I think that
    there is an error in the format of your <catalog>.xml file. For
    instance, if you try running with foodmart.xml, I think you'll find that
    error goes away.

    Julian


    _____

    From: mondrian-bounces (AT) pentaho (DOT) org [mailto:mondrian-bounces (AT) pentaho (DOT) org]
    On Behalf Of Laurent Valdes
    Sent: Saturday, March 03, 2007 8:44 AM
    To: mondrian (AT) pentaho (DOT) org
    Subject: [Mondrian] Re: Mondrian in my Java Program



    Sorry, I tested my JDBC string several times.
    Enclosure class mondrian.olap.MondrianDef not found.
    and the class does exist since I have done Class.forClass to check for
    its existence.

    Have a good day !



    2007/3/2, Laurent Valdes < <mailto:valderama (AT) gmail (DOT) com>
    valderama (AT) gmail (DOT) com>:

    Currently I have the following:

    OLAPTest ot=new OLAPTest();
    try{
    ot.initialize();
    }
    catch(Exception e)
    {
    System.out.println("Erreur initialisation: ");
    e.printStackTrace();
    }

    Connection connection = DriverManager.getConnection(
    "Provider=mondrian;" +
    "Jdbc=" + ot.jdbcUri + ";" +
    "Catalog="+ "" + ot.catalogUrl.toString(),
    null,
    false);

    But I get the following:


    Exception in thread "main" org.eigenbase.xom.AssertFailure: Enclosure
    class mondrian.olap.MondrianDef not found.
    at org.eigenbase.xom.DOMElementParser.getEnclosureClass(Unknown
    Source)
    at org.eigenbase.xom.DOMElementParser.classArray(Unknown Source)
    at org.eigenbase.xom.DOMElementParser.getArray(Unknown Source)
    at mondrian.olap.MondrianDef$Schema.<init>(
    MondrianDef.java:104)




    2007/3/2, Laurent Valdes <valderama (AT) gmail (DOT) com
    <mailto:valderama (AT) gmail (DOT) com> >:


    Hi everybody,

    How are you ?
    I'm absolutely new in this mailing-list.

    I'm writing some java programs to automate decisions in my company, and
    was trying to use Mondrian as it is possible to use JDBC: from a Java
    program.

    My first question is: How do I execute MDX queries from Java code ?
    My second question is: Does the client need to keep separated from the
    ROLAP server ?
    If no, how can I do queries ?
    If yes, how can I start the server ? and then how do I make OLAP queries
    ?

    Many thanks for your help !

    Best regards,

    Laurent.


    --

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