I'm now using incubator/cayenne/main/branches/STABLE-1.2.
One odd problem I'm hitting is serializing a DataContext created with
DataContext.createDataContext().
In my testing, I submit a web request that creates a new object,
submit a web request which creates another set of new objects and
assign it to relationships with my first new object, then submit a web
request which deletes the set of new objects. At this point,
serialization writeObject fails on one of my internal assertions,
apparently because the deleted object is still in the context.
Here's what the summarized stack trace looks like (full trace below):
8 Fee(BaseDataObjectImpl).writeObject(ObjectOutputStream) line: 95
7 HashMap.writeObject(ObjectOutputStream) line: 978
6 FeeCycle(CayenneDataObject).writeObject(ObjectOutputStream) line: 497
5 LinkedList.writeObject(ObjectOutputStream) line: 685
4 HashMap.writeObject(ObjectOutputStream) line: 978
3 FeeCycleType(CayenneDataObject).writeObject(ObjectOutputStream) line: 497
2 HashMap.writeObject(ObjectOutputStream) line: 978
1 DataContext.writeObject(ObjectOutputStream) line: 1740
Fee in 8 and FeeCycle in 6 are transient objects -- no datacontext.
FeeCycleType in 3 is a committed object. It's a mystery to me how
FeeCycle in 6 is being picked up by the writeObject method chain.
My thoughts are that FeeCycle must be referenced in the hashmap at 4
for the FeeCycleType at 3.
The hashmap at 4 contains:
name=Monthly
[EMAIL PROTECTED]
and the ToManyList contains:
value= ToManyList (id=614)
addedToUnresolved= null
objectList= ArrayList (id=621)
elementData= Object[10] (id=655)
modCount= 0
size= 0
relationship= "feeCycleList"
removedFromUnresolved= null
source= FeeCycleType (id=400)
So what I'm at a loss to determine is how I get from the Hashmap in 4
to the LinkedList in 5, which is what contains my transient deleted
object (and related deleted objects).
The LinkedList in 5 contains:
this= LinkedList (id=394)
header= LinkedList$Entry (id=641)
element= null
next= LinkedList$Entry (id=673)
element= FeeCycle (id=387)
isInTemporaryDataContext= true
objectContext= null
objectId= null
persistenceState= 1
snapshotVersion= 0
values= HashMap (id=375)
next= LinkedList$Entry (id=641)
previous= LinkedList$Entry (id=641)
previous= LinkedList$Entry (id=673)
modCount= 1
size= 1
The writeObject code for HashMap seems straight-forward, and we're
supposedly writing out a Map.Entry e getValue() result (debugger won't
show me what local variables are set to, but that's the line that's
showing up in my source code).
It seems like this linked list must be part of the serialization of
ToManyList (which does contain two linked lists), but looking at the
source for ToManyList, I don't see anything that matches up with what
I'd expect.
It looks like it must be serializing either addedToUnresolved or
removedFromUnresolved as these are the LinkedLists, but both of these
are null.
So.... Any ideas what I can do to try to track this down more?
=================
Possibly other relevent information:
I assume that 2 is writing out the hashmap of the ObjectStore, which
contains these 13 items. There's no Fee reference here, nor are
there any references to non-committed FeeCycles.
<ObjectId:Contact, TEMP:000002574DF30161>={<ObjectId:Contact,
TEMP:000002574DF30161>; new; [phoneList=>(..); addressList=>(..);
contactNameList=>(..); tdWorkList=>(..); emailList=>(..);
primaryContactName=>{<ObjectId:ContactName, TEMP:000003574DF30161>}]}
<ObjectId:ContactName, TEMP:000003574DF30161>={<ObjectId:ContactName,
TEMP:000003574DF30161>; new; [allContactList=>(..);
primaryContactList=>(..)]}
<ObjectId:FeeCycleType,
FEE_CYCLE_TYPE_ID=100>={<ObjectId:FeeCycleType,
FEE_CYCLE_TYPE_ID=100>; modified; [feeCycleList=>(..); name=>None]}
<ObjectId:MonthPayableType,
MONTH_PAYABLE_TYPE_ID=113>={<ObjectId:MonthPayableType,
MONTH_PAYABLE_TYPE_ID=113>; modified; [feeCycleList=>(..);
name=>Monthly]}
<ObjectId:LegalParcel, TEMP:000006574DF30161>={<ObjectId:LegalParcel,
TEMP:000006574DF30161>; new; [meridianType=>{<ObjectId:MeridianType,
MERIDIAN_TYPE_ID=100>}; authorizationDocumentList=>(..);
parcel=>{<ObjectId:Parcel, TEMP:000007574DF30161>}]}
<ObjectId:ContactName, TEMP:000005574DF30161>={<ObjectId:ContactName,
TEMP:000005574DF30161>; new; [allContactList=>(..); fullName=>GVEA;
primaryContactList=>(..)]}
<ObjectId:MeridianType, MERIDIAN_TYPE_ID=100>={<ObjectId:MeridianType,
MERIDIAN_TYPE_ID=100>; modified; [name=>Fairbanks;
legalParcelList=>(..)]}
<ObjectId:LotType, LOT_TYPE_ID=100>={<ObjectId:LotType,
LOT_TYPE_ID=100>; modified; [parcelList=>(..); name=>Lot]}
<ObjectId:AuthorizationDocument,
TEMP:000001574DF30161>={<ObjectId:AuthorizationDocument,
TEMP:000001574DF30161>; new;
[dependentEasementDocument=>{<ObjectId:EasementDocument,
TEMP:000000574DF30161>}; recurringFeeCycle=>null;
authorizationDocumentGroupList=>(..); initialFeeCycle=>null;
oldWorkOrderList=>(..); workList=>(..); legalParcelList=>(..)]}
<ObjectId:Parcel, TEMP:000007574DF30161>={<ObjectId:Parcel,
TEMP:000007574DF30161>; new; [legalParcel=>{<ObjectId:LegalParcel,
TEMP:000006574DF30161>}; lotType=>{<ObjectId:LotType,
LOT_TYPE_ID=100>}; tdWorkList=>(..)]}
<ObjectId:EasementDocument,
TEMP:000000574DF30161>={<ObjectId:EasementDocument,
TEMP:000000574DF30161>; new; [grantorList=>(..);
authorizationDocument=>{<ObjectId:AuthorizationDocument,
TEMP:000001574DF30161>}; granteeList=>(..)]}
<ObjectId:FeeCycleType,
FEE_CYCLE_TYPE_ID=101>={<ObjectId:FeeCycleType,
FEE_CYCLE_TYPE_ID=101>; modified; [feeCycleList=>(..); name=>Monthly]}
<ObjectId:Contact, TEMP:000004574DF30161>={<ObjectId:Contact,
TEMP:000004574DF30161>; new; [phoneList=>(..); addressList=>(..);
contactNameList=>(..); tdWorkList=>(..); emailList=>(..);
primaryContactName=>{<ObjectId:ContactName, TEMP:000005574DF30161>}]}
=================
Thread [SocketListener0-0] (Suspended (breakpoint at line 95 in
BaseDataObjectImpl))
Fee(BaseDataObjectImpl).writeObject(ObjectOutputStream) line: 95
GeneratedMethodAccessor171.invoke(Object, Object[]) line: not available
DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25
Method.invoke(Object, Object[]) line: 324
ObjectStreamClass.invokeWriteObject(Object, ObjectOutputStream) line:
809
ObjectOutputStream.writeSerialData(Object, ObjectStreamClass) line: 1296
ObjectOutputStream.writeOrdinaryObject(Object, ObjectStreamClass,
boolean) line: 1247
ObjectOutputStream.writeObject0(Object, boolean) line: 1052
ObjectOutputStream.writeObject(Object) line: 278
HashMap.writeObject(ObjectOutputStream) line: 978
GeneratedMethodAccessor75.invoke(Object, Object[]) line: not available
DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25
Method.invoke(Object, Object[]) line: 324
ObjectStreamClass.invokeWriteObject(Object, ObjectOutputStream) line:
809
ObjectOutputStream.writeSerialData(Object, ObjectStreamClass) line: 1296
ObjectOutputStream.writeOrdinaryObject(Object, ObjectStreamClass,
boolean) line: 1247
ObjectOutputStream.writeObject0(Object, boolean) line: 1052
ObjectOutputStream.writeObject(Object) line: 278
FeeCycle(CayenneDataObject).writeObject(ObjectOutputStream) line: 497
GeneratedMethodAccessor170.invoke(Object, Object[]) line: not available
DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25
Method.invoke(Object, Object[]) line: 324
ObjectStreamClass.invokeWriteObject(Object, ObjectOutputStream) line:
809
ObjectOutputStream.writeSerialData(Object, ObjectStreamClass) line: 1296
ObjectOutputStream.writeOrdinaryObject(Object, ObjectStreamClass,
boolean) line: 1247
ObjectOutputStream.writeObject0(Object, boolean) line: 1052
ObjectOutputStream.writeObject(Object) line: 278
LinkedList.writeObject(ObjectOutputStream) line: 685
GeneratedMethodAccessor162.invoke(Object, Object[]) line: not available
DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25
Method.invoke(Object, Object[]) line: 324
ObjectStreamClass.invokeWriteObject(Object, ObjectOutputStream) line:
809
ObjectOutputStream.writeSerialData(Object, ObjectStreamClass) line: 1296
ObjectOutputStream.writeOrdinaryObject(Object, ObjectStreamClass,
boolean) line: 1247
ObjectOutputStream.writeObject0(Object, boolean) line: 1052
ObjectOutputStream.defaultWriteFields(Object, ObjectStreamClass) line:
1332
ObjectOutputStream.writeSerialData(Object, ObjectStreamClass) line: 1304
ObjectOutputStream.writeOrdinaryObject(Object, ObjectStreamClass,
boolean) line: 1247
ObjectOutputStream.writeObject0(Object, boolean) line: 1052
ObjectOutputStream.writeObject(Object) line: 278
HashMap.writeObject(ObjectOutputStream) line: 978
GeneratedMethodAccessor75.invoke(Object, Object[]) line: not available
DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25
Method.invoke(Object, Object[]) line: 324
ObjectStreamClass.invokeWriteObject(Object, ObjectOutputStream) line:
809
ObjectOutputStream.writeSerialData(Object, ObjectStreamClass) line: 1296
ObjectOutputStream.writeOrdinaryObject(Object, ObjectStreamClass,
boolean) line: 1247
ObjectOutputStream.writeObject0(Object, boolean) line: 1052
ObjectOutputStream.writeObject(Object) line: 278
FeeCycleType(CayenneDataObject).writeObject(ObjectOutputStream) line:
497
GeneratedMethodAccessor170.invoke(Object, Object[]) line: not available
DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25
Method.invoke(Object, Object[]) line: 324
ObjectStreamClass.invokeWriteObject(Object, ObjectOutputStream) line:
809
ObjectOutputStream.writeSerialData(Object, ObjectStreamClass) line: 1296
ObjectOutputStream.writeOrdinaryObject(Object, ObjectStreamClass,
boolean) line: 1247
ObjectOutputStream.writeObject0(Object, boolean) line: 1052
ObjectOutputStream.writeObject(Object) line: 278
HashMap.writeObject(ObjectOutputStream) line: 978
GeneratedMethodAccessor75.invoke(Object, Object[]) line: not available
DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25
Method.invoke(Object, Object[]) line: 324
ObjectStreamClass.invokeWriteObject(Object, ObjectOutputStream) line:
809
ObjectOutputStream.writeSerialData(Object, ObjectStreamClass) line: 1296
ObjectOutputStream.writeOrdinaryObject(Object, ObjectStreamClass,
boolean) line: 1247
ObjectOutputStream.writeObject0(Object, boolean) line: 1052
ObjectOutputStream.defaultWriteFields(Object, ObjectStreamClass) line:
1332
ObjectOutputStream.writeSerialData(Object, ObjectStreamClass) line: 1304
ObjectOutputStream.writeOrdinaryObject(Object, ObjectStreamClass,
boolean) line: 1247
ObjectOutputStream.writeObject0(Object, boolean) line: 1052
ObjectOutputStream.defaultWriteFields(Object, ObjectStreamClass) line:
1332
ObjectOutputStream.defaultWriteObject() line: 367
DataContext.writeObject(ObjectOutputStream) line: 1740
