Hi, Just to provide more information on my problem. I tried a simpler XML data file structure, in which there is no nested complex type. Now I can pass through the "db = jdo.getDatabase();" line.
The simpler XML data structure is as follows (in xsd): <?xml version="1.0" encoding="utf-8"?> <xs:schema elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema";> <!-- simple types --> <xs:simpleType name="NameType"> <xs:restriction base="xs:string"/> </xs:simpleType> <xs:simpleType name="Acct_IDType"> <xs:restriction base="xs:positiveInteger"> <xs:totalDigits value="2"/> </xs:restriction> </xs:simpleType> <xs:simpleType name="DeskCodeType"> <xs:restriction base="xs:positiveInteger"> <xs:totalDigits value="3"/> </xs:restriction> </xs:simpleType> <!-- complex types --> <xs:complexType name="DeskType"> <xs:sequence> <xs:element minOccurs="1" maxOccurs="1" name="DeskCode" type="DeskCodeType"/> <xs:element minOccurs="1" maxOccurs="1" name="Name" type="NameType"/> <xs:element minOccurs="1" maxOccurs="1" name="Acct_ID" type="Acct_IDType"/> </xs:sequence> </xs:complexType> <!-- initiation --> <xs:element name="Desk" type="DeskType"/> </xs:schema> Notice that the Acct_ID simple type replaces the Acct complex type at DeskType. I recall that Source Generator is not fully compactable with Castor JDO. It seems that the problem boils down back to how to pass Arrays into JDO again... But how come the NullPointerException if the Mapping is the one having the problem? If passing Arrays is the problem, I have searched it in your mailing list archive, and implemented the solution by Keith (http://www.mail-archive.com/[email protected]/msg03638.html) But it doesn't seem to work that smoothly, as my error suggests... Any alternative solutions? --Johnny -----Original Message----- From: Fong, Kakeungjohnny Sent: Thursday, October 03, 2002 5:50 PM To: [EMAIL PROTECTED] Subject: [castor-dev] RE: jdo setConfiguration problem with sybase Hi, Thank you for the prompt reply. I've tried ur method, but the problem doesn't go away. 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) ... The problem line of code becomes "db = jdo.getDatabase();" I am using JBuilder7, and my file structure looks something like this: /classes /com <copy of files at /xml> accounts.xml <sample data> acctConfig.xml <Config file> acctMap.xml <mapping file> /data <where the generated classes from Source Generator are stored> Acct.class AcctDescriptor.class AcctType.class AcctTypeDescriptor.class Desk.class DeskDescriptor.class DeskType.class DeskTypeDescriptor.class /sqlTest <where the testing program's classes are stored> AcctProcessor.class testAcct.class /src /com /data <where the generated java files from Source Generator are stored> Acct.java AcctDescriptor.java AcctType.java AcctTypeDescriptor.java Desk.java DeskDescriptor.java DeskType.java DeskTypeDescriptor.java /sqlTest <where the testing program's java files are stored> AcctProcessor.class testAcct.class /xml <where the xml files are stored> accounts.xml <sample data> acctConfig.xml <Config file> acctMap.xml <mapping file> Are there any other problems in my files that might cause the Null Pointer Exception? --Johnny -----Original Message----- From: Bruce Snyder [mailto:[EMAIL PROTECTED]] Sent: Thursday, October 03, 2002 3:44 PM To: [EMAIL PROTECTED] Subject: Re: [castor-dev] jdo setConfiguration problem with sybase This one time, at band camp, Fong, Kakeungjohnny said: FK>I have been trying to use Castor with Sybase, and here is the java code for FK>connecting the database: FK> FK> // Define the JDO object FK> jdo = new JDO(); FK> jdo.setClassLoader( getClass().getClassLoader() ); FK> jdo.setConfiguration("acctConfig.xml"); Johnny, Where does acctConfig.xml reside on the file system? Based on the above code, unless it's in the directory from which the Java application is launched, Castor will not find it. A better strategy for locating it is to make use of: getClass().getResource() - this will require that acctConfig.xml reside where the calling .class resides getClass().getClassLoader().getSystemResource() - this will locate acctConfig.xml on the CLASSPATH Bruce -- perl -e 'print unpack("u30","<0G)U8V4\@4VYY9&5R\"F9E<G)E=\$\!F<FEI+F-O;0\`\`");' ----------------------------------------------------------- If you wish to unsubscribe from this mailing, send mail to [EMAIL PROTECTED] with a subject of: unsubscribe castor-dev ----------------------------------------------------------- If you wish to unsubscribe from this mailing, send mail to [EMAIL PROTECTED] with a subject of: unsubscribe castor-dev ----------------------------------------------------------- If you wish to unsubscribe from this mailing, send mail to [EMAIL PROTECTED] with a subject of: unsubscribe castor-dev
