Hello,
I got an unpleasant bug which turned into a serious issue. Using ObjectDB 2.6.9.b08 on Linux.
Here is the structure (JDO metadata) of 3 classes which I am storing as values in a HashMap of another entity in the DB.
<jdo> <package name="my.example.package"> <class name="InnerSettings"> <field name="attributes" embedded="true"> <map embedded-key="true" embedded-value="true" /> </field> </class> <class name="BasicSettings"> <field name="userRoles" embedded="true"/> <field name="innerSettings" embedded="true"> <map embedded-key="true" embedded-value="true" /> </field> </class> <class name="StoreSettings" persistence-capable-superclass="BasicSettings"/> <class name="AnalyzeSettings" persistence-capable-superclass="BasicSettings"/> </package> </jdo>
As you can see the classes are not embedded, so they have their own extent and IDs in the DB.
My application works fine with them up to I try to launch it in debug mode in eclipse.
Upon reading it in debug mode I got this exception:
com.objectdb.o.UserException: Failed to construct an instance of my.example.package.AnalyzeSettings using a no-arg constructor at com.objectdb.o.MSG.d(MSG.java:75) at com.objectdb.o.UTY.newInstance(UTY.java:1262) at com.objectdb.o.OBC.aM(OBC.java:949) at com.objectdb.o.OBC.UZ(OBC.java:822) at com.objectdb.o.TYR.aF(TYR.java:715) at com.objectdb.o.TYR.aE(TYR.java:701) at com.objectdb.o.TYR.completeRead(TYR.java:544) at com.objectdb.o.TYR.readElement(TYR.java:294) at com.objectdb.o.UTY.readAndAdjust(UTY.java:1558) at com.objectdb.o.MPT.readArray(MPT.java:423) at com.objectdb.o.MPT.readArray(MPT.java:403) at com.objectdb.o.MPT.H(MPT.java:331) at com.objectdb.o.TYT.extractMap(TYT.java:108) at com.objectdb.o.ENT.extractMap(ENT.java:1550) at objectdb.java.util.HashMap.__odbBeforeAccess(Unknown Source) at objectdb.java.util.HashMap.keySet(Unknown Source) at my.example.package.Tool.deepCopy(Tool.java:1597) ... 20 more Caused by: com.objectdb.o.UserException: Failed to construct an instance of my.example.package.AnalyzeSettings using a no-arg constructor at com.objectdb.o.MSG.d(MSG.java:75) at com.objectdb.o.TYH.X(TYH.java:967) at com.objectdb.o.UTY.newInstance(UTY.java:1258) ... 35 more Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.objectdb.o.TYH.X(TYH.java:963) ... 36 more Caused by: java.lang.NoSuchMethodError: my.example.package.BasicSettings: method ()V not found at my.example.package.AnalyzeSettings.(AnalyzeSettings.java:1) ... 41 more
So I added no-arg constructors to classes: AnalyzeSettings, StoreSettings, BasicSettings
and then the processing got a little further and I got this error:
java.lang.AbstractMethodError at com.objectdb.o.OBC.ay(OBC.java:463) at com.objectdb.o.OBC.aM(OBC.java:954) at com.objectdb.o.OBC.UZ(OBC.java:822) at com.objectdb.o.TYR.aF(TYR.java:715) at com.objectdb.o.TYR.aE(TYR.java:701) at com.objectdb.o.TYR.completeRead(TYR.java:544) at com.objectdb.o.TYR.readElement(TYR.java:294) at com.objectdb.o.UTY.readAndAdjust(UTY.java:1558) at com.objectdb.o.MPT.readArray(MPT.java:423) at com.objectdb.o.MPT.readArray(MPT.java:403) at com.objectdb.o.MPT.H(MPT.java:331) at com.objectdb.o.TYT.extractMap(TYT.java:108) at com.objectdb.o.ENT.extractMap(ENT.java:1550) at objectdb.java.util.HashMap.__odbBeforeAccess(Unknown Source) at objectdb.java.util.HashMap.keySet(Unknown Source) at my.example.package.Tool.deepCopy(Tool.java:1597)
Could u please advice me how to fix this state ?
