[castor-dev] unexpected stop...

[Nick Stuart]

I seem to have come across a bug where castor it generates a stack overflow, so I'm stuck in a loop somewhere in castor. My stack trace for it is at the bottom.  In my mapping file I have the following:   <class name="com.vort.ads.beans.Project" identity="projectNumber">     <map-to table="prjinfo" />     <field name="projectNumber" type="integer">       <sql name="projectNumber" type="integer" />     </field>     <field name="systems" type="com.vort.ads.beans.SystemDims" collection="vector">             <sql many-key="projectNumber"/>     </field> ..... </class>   <class name="com.vort.ads.beans.SystemManuals"         identity="id"         key-generator="IDENTITY"         depends="com.vort.ads.beans.SystemDims">     <map-to table="prjdimsmanual" />        <field name="id" type="integer">       <sql name="id" type="integer" />     </field>     <field name="system" type="com.vort.ads.beans.SystemDims">       <sql name="systemId" />     </field> ..... </class>   <class name="com.vort.ads.beans.SystemModelDims"         identity="id"         key-generator="IDENTITY"         depends="com.vort.ads.beans.SystemDims">     <map-to table="prjdimsmodel" />     <field name="id" type="integer">       <sql name="id" type="integer" />     </field>     <field name="system" type="com.vort.ads.beans.SystemDims">       <sql name="systemId" />     </field> ..... </class   <class name="com.vort.ads.beans.SystemDims" identity="id" key-generator="IDENTITY">     <map-to table="prjdims" />     <field name="id" type="integer">       <sql name="id" type="integer" />     </field>     <field name="modelDims" type="com.vort.ads.beans.SystemModelDims">       <sql many-key="id"/>     </field>     <field name="manual" type="com.vort.ads.beans.SystemManuals">       <sql many-key="id"/>     </field>     ..... </class>   Now the only thing is that the modelDims and manual fields aren't vectors/collections because they are one to one relationships to SystemDims. When I go to call db.load(Project.class, new Integer(0)) it just hangs there with nothing being spit out or errors called or anything, it just overflows. I can't seem to debug it correctly either to find out where it stops inside castor. Whenever I go to step into db.load it just spits me to some odd place in my code. Short term fix would be just make the fields vectors, knowing that there is never going to be more then one value in there, but I would like to do  "correctly" and be sure that there could only ever be one value in the code, even the db is setup to allow only one.   Thanks for the help, -Nick   java.lang.StackOverflowError         at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:83)         at java.net.SocketOutputStream.write(SocketOutputStream.java:136)         at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:66)         at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:124)         at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:1503)         at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:1430)         at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:882)         at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:956)         at com.mysql.jdbc.Connection.execSQL(Connection.java:1874)         at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1538)         at org.exolab.castor.jdo.engine.SQLEngine.load(SQLEngine.java:1028)         at org.exolab.castor.persist.ClassMolder.load(ClassMolder.java:694)         at org.exolab.castor.persist.LockEngine.load(LockEngine.java:359)         at org.exolab.castor.persist.TransactionContext.load(TransactionContext.java:649)         at org.exolab.castor.persist.TransactionContext.load(TransactionContext.java:555)         at org.exolab.castor.persist.ClassMolder.load(ClassMolder.java:761)             ß--- a whole lot of these   ---à         at org.exolab.castor.persist.LockEngine.load(LockEngine.java:359)         at org.exolab.castor.persist.TransactionContext.load(TransactionContext.java:649)         at org.exolab.castor.persist.TransactionContext.load(TransactionContext.java:555)         at org.exolab.castor.persist.ClassMolder.load(ClassMolder.java:761) Exception in thread "main"