Software:
- Castor 0.9.4 (JDO-module)
- XDoclet beta 1.2.0 (for generating the mapping.xml-file)
- JDK 1.4.0.
- mySQL + mysql-connector-java-2.0.14
I get an exception when opening the database. My best guess is that this may
be a bug related to missing attributes / tags in the mapping-file. Maybe
someone with experience can tell me what I'm doing wrong?
Thanks!
- Henning
Stacktrace:
------------
java.lang.NullPointerException
at org.exolab.castor.jdo.engine.JDOClassDescriptor.<init>(Unknown
Source)
at
org.exolab.castor.jdo.engine.JDOMappingLoader.createDescriptor(Unknown
Source)
at
org.exolab.castor.mapping.loader.MappingLoader.loadMapping(Unknown Source)
at org.exolab.castor.jdo.engine.JDOMappingLoader.loadMapping(Unknown
Source)
at org.exolab.castor.mapping.Mapping.getResolver(Unknown Source)
at
org.exolab.castor.jdo.engine.DatabaseRegistry.loadDatabase(Unknown Source)
at org.exolab.castor.jdo.JDO.getDatabase(Unknown Source)
at castortest.Test.main(Test.java:63)
Source snippet:
---------------
try
{
JDO jdo;
Database db;
// Define the JDO object
jdo = new JDO("castortest");
jdo.setConfiguration("database.xml");
jdo.setClassLoader(getClass().getClassLoader());
Class.forName("com.mysql.jdbc.Driver"); // Bug? -Driver not found if I
don't load it explicitly.
// Obtain a new database
db = jdo.getDatabase(); // <--- Crash!!
...
The mapping file:
------------------
<?xml version="1.0"?>
<!DOCTYPE mapping PUBLIC "-//EXOLAB/Castor Mapping DTD Version 1.0//EN"
"http://castor.exolab.org/mapping.dtd";>
<!-- This mapping file is generated by XDoclet. Please do not edit! -->
<mapping>
<!-- ===================================================================
-->
<!-- Mapping for class castortest.Person -->
<!-- ===================================================================
-->
<class name="castortest.Person"
identity="id"
access="shared"
auto-complete="false">
<map-to table="person" />
<cache-type type="count-limited" />
<field name="dob"
type="java.util.Date"
get-method="getDob">
<sql
type="date" />
<bind-xml />
</field>
<field name="id"
type="integer"
get-method="getId">
<sql
type="integer" />
<bind-xml />
</field>
<field name="name"
type="java.lang.String"
get-method="getName">
<sql
type="varchar" />
<bind-xml />
</field>
</class>
<!--
Define your key-generator declaration in a file called key-generator.xml
and place it in your merge directory.
-->
</mapping>
The settings-file:
------------------
<!DOCTYPE databases PUBLIC "-//EXOLAB/Castor JDO Configuration DTD Version
1.0//EN"
"http://castor.exolab.org/jdo-conf.dtd";>
<database name="castortest" engine="mysql">
<driver url="jdbc:mysql://localhost:3306/castortest"
class-name="com.mysql.jdbc.Driver">
<param name="user" value="" />
<param name="password" value="" />
</driver>
<mapping href="mapping.xml" />
</database>
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