Andrew, do you see any chance to provide us with a small sample application or test case the allows us to reproduce and debug the problem?
I'd suggest you to create a new issue on this XML problem in jira. Regards Ralf Castor JDO, commiter Werner Guttmann schrieb: > Andrew, > > Please see inline for comments ... > > Werner > > >>-----Original Message----- >>From: Andrew Mason [mailto:[EMAIL PROTECTED] >>Sent: Dienstag, 14. Februar 2006 13:46 >>To: [email protected] >>Subject: [castor-user] Re: [SPAM] - [SPAM] - Re: >>[castor-user] Castor marshalling Hibernate Pojos - Email >>found in subject - Email found in subject - Email found in >>subject - Email found in subject >> >>Thanks for all your suggestions guys, >>I think I've figured out what is going on here, and it does >>seem to be linked to the fact that Hibernate is using CGLIB >>enhancements for Classes that are lazily loaded. >>During the Validate phase of the Marshalling, the method >>MappingLoader.getDescriptor(Class type) is called, this uses >>the Hashtable _clsDescs to find the ClassDescriptor which are >>keyed by the pojo's classes. >>However, when the marshaller gets the class of a lazily >>loaded field (with it's CGLIB enhancements), it doesn't match >>the classes within MappingLoader._clsDescs, so the Marshaller >>treats the classes as not mapped, and introspects them. > > Can you please point me to the exact location of the code described here > ? I am sure a solution can be provided, though it is not going to be > easy .. ;-). > > >>I don't know if this is the only place this is a problem, or >>whether I'm going to encounter similar issues deeper within >>the code - can anyone tell me? > > No, I don't know either, as I am not that familiar with Castor XML as > with the JDO side of things. But maybe somebody else can step in and > answer that question. > > >>I figure it must be possible to fix this problem, and as the >>alternative is to drop Castor XML from the project I'll have a go. > > Well, well ... dropping something that works otherwise does not look > like a viable option to me .. ;-). Let's see what we can come up with. > > >>Unless there is some other way of geting around it? >>Any ideas? >> >>Thanks >> >>Andrew >> >> >>Werner Guttmann wrote: >> >> >>>Stephen, >>> >>>we'd be more than happy to provide you with some help when it comes >>>down to your personal learning experience. What do you need ? >>> >>>To, for example, model a 1:M relation from A to B, in A >> >>you'll need a >> >>>property named 'bs' of type e.g. List, and in the mapping >> >>file a field >> >>>mapping similar to >>> >>><field name="bs" type="some.domain.B" collection="arraylist"> >>> <sql many-key=" ..." /> >>></field> >>> >>>And in terms of the SQL statements to create A and B, one >> >>could use the >> >>>following statements as a starting point: >>> >>>create table domain_a ( >>> id int not null PRIMARY KEY, >>> name varchar(20) >>>); >>> >>>create table domain_B 8 >>> id int not null PRIMARY KEY, >>> descr varchar(20), >>> a_id int >>>); >>> >>>I hope this keeps you going ... ;-). >>> >>>Werner >>> >>>Stephen Bash wrote: >>> >>> >>> >>>>Well gentlemen, since I've wanted to learn more about the JDO world >>>>for a while now, I took this as a chance to read up more on Castor >>>>JDO. And honestly, most of it makes sense though I have >> >>very little >> >>>>experience with O/R mapping. Unfortunately, when it comes >> >>to actually >> >>>>creating the database schema or correctly modeling the 1:m >> >>relations, >> >>>>I'm out of my league, so I'm probably going to have to >> >>leave this one >> >>>>for someone else. >>>> >>>>Thanks, >>>>Stephen >>>> >>>>On 2/13/06, Ralf Joachim <[EMAIL PROTECTED]> wrote: >>>> >>>> >>>> >>>>>Hi Andrew, Hi Stephen, >>>>> >>>>>according to my knowledge hibernate returns cglib-proxies >> >>instead of >> >>>>>the original ones as they havily us lazy loading of data from >>>>>database. In the past a few users had problems with the >> >>constelation >> >>>>>castor xml together with hibernate according to this cglib-proxies. >>>>> >>>>>Just in case you are not aware of it >>>>>Ralf >>>>> >>>>> >>>>>Stephen Bash schrieb: >>>>> >>>>> >>>>> >>>>>>Andrew- >>>>>> >>>>>>So I tried to recreate your problem with a simpler set of classes: >>>>>> >>>>>> public class ParentFoo { >>>>>> protected int parentId; >>>>>> protected Set children; >>>>>> >>>>>> public int getParentId() { return parentId; } >>>>>> public void setParentId( int parentId ) { this.parentId = >>>>>>parentId; } >>>>>> >>>>>> public Set getChildren() { return children; } >>>>>> public void setChildren( Set children ) { >> >>this.children = children; } >> >>>>>> } >>>>>> >>>>>> public class ChildFoo { >>>>>> protected int childId; >>>>>> protected Set parents; >>>>>> >>>>>> public int getChildId() { return childId; } >>>>>> public void setChildId( int childId ) { this.childId = >>>>>>childId; } >>>>>> >>>>>> public Set getParents() { return parents; } >>>>>> public void setParents( Set parents ) { this.parents = >>>>>>parents; } >>>>>> >>>>>> public String toString() { return( String.valueOf( >> >>childId ) ); } >> >>>>>> } >>>>>> >>>>>>And the following mapping file: >>>>>> >>>>>> <mapping> >>>>>> <class name="ParentFoo"> >>>>>> <map-to xml="parent-foo" /> >>>>>> >>>>>> <field name="parentId" type="integer"> >>>>>> <bind-xml name="id" node="attribute" /> >>>>>> </field> >>>>>> >>>>>> <field name="children" collection="set" type="ChildFoo"> >>>>>> <bind-xml name="child" /> >>>>>> </field> >>>>>> </class> >>>>>> >>>>>> <class name="ChildFoo"> >>>>>> <map-to xml="child-foo" /> >>>>>> >>>>>> <field name="childId" type="integer"> >>>>>> <bind-xml name="id" node="attribute" /> >>>>>> </field> >>>>>> >>>>>><!-- >>>>>> <field name="parents" collection="set" >>>>>>type="castor.mason.one.ParentFoo"> >>>>>> <bind-xml name="parent" /> >>>>>> </field> >>>>>>--> >>>>>> </class> >>>>>> </mapping> >>>>>> >>>>>>I've attempted to recreate the 1:m m:1 relationship you had. You >>>>>>can see in my mapping file I have the connection between the >>>>>>children and the parents commented out. I then created a >> >>series of >> >>>>>>parents and children, mixing and matching them. Using >> >>this mapping >> >>>>>>file as is to marshal my first parent object I get: >>>>>> >>>>>> <parent-foo id="1"> >>>>>> <child id="5"/> >>>>>> <child id="4"/> >>>>>> </parent-foo> >>>>>> >>>>>>If I uncomment the child->parent relationship, I get: >>>>>> >>>>>> <parent-foo id="1"> >>>>>> <child id="5"> >>>>>> <parent id="2"> >>>>>> <child id="6"> >>>>>> <parent id="3"/> >>>>>> </child> >>>>>> <child id="4"/> >>>>>> </parent> >>>>>> </child> >>>>>> <child id="4"> >>>>>> <parent id="2"> >>>>>> <child id="6"> >>>>>> <parent id="3"/> >>>>>> </child> >>>>>> <child id="5"/> >>>>>> </parent> >>>>>> </child> >>>>>> </parent-foo> >>>>>> >>>>>>I'm somewhat surprised to find that I'm not getting the deep >>>>>>recursion you mention. I tested this with Castor 0.9.9 >> >>and 1.0M2. >> >>>>>>What version of Castor are you running? If you can run >> >>this example >> >>>>>>on your system and agree or disagree with the output, >> >>that would also be helpful. >> >>>>>>Do you see anything grossly different between your setup >> >>and mine? >> >>>>>>I don't have the intermediate classes, so that might >> >>change things, >> >>>>>>but I wanted to start simple. >>>>>> >>>>>>Let me know your thoughts on this example and its >> >>comparison to your >> >>>>>>code. I can't directly answer your question because from >> >>what I can >> >>>>>>tell, you're doing what I'm doing... >>>>>> >>>>>>Stephen >>>>>> >>>>>> >>>>>>On 2/13/06, Andrew Mason <[EMAIL PROTECTED]> wrote: >>>>>> >>>>>> >>>>>> >>>>>> >>>>>>>OK, >>>>>>> >>>>>>>Here is the castor mapping file: >>>>>>> >>>>>>><?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mapping PUBLIC >>>>>>>"-//EXOLAB/Castor Object Mapping DTD Version 1.0//EN" >>>>>>> "http://castor.org/mapping.dtd";> >>>>>>><mapping> <class name="uk.gov.forestry.harpps.model.Species" >>>>>>>auto-complete="false"> <map-to xml="species"/> <field >>>>>>>name="scientificName"> <bind-xml name="scientific-name" >>>>>>>node="attribute"/> </field> <field name="protections" >>>>>>>collection="set" >>>>>>>type="uk.gov.forestry.harpps.model.Protection"> >>>>>>></field> >>>>>>></class> >>>>>>> >>>>>>><class name="uk.gov.forestry.harpps.model.Protection" >>>>>>>auto-complete="false"> >>>>>>><map-to xml="protection"/> >>>>>>><field name="lookupProtection" >>>>>>>type="uk.gov.forestry.harpps.model.LookupProtection"> >>>>>>><bind-xml name="lookup-protection" node="element"/> </field> >>>>>>></class> >>>>>>> >>>>>>><class name="uk.gov.forestry.harpps.model.LookupProtection" >>>>>>>auto-complete="false"> >>>>>>><map-to xml="protection-lookup"/> >>>>>>><field name="protectionName"> >>>>>>><bind-xml name="protection-name" node="attribute"/> >> >></field> <field >> >>>>>>>name="lookupProtectionType" >>>>>>>type="uk.gov.forestry.harpps.model.LookupProtectionType"> >>>>>>><bind-xml name="protection-type" node="element"/> >> >></field> </class> >> >>>>>>><class name="uk.gov.forestry.harpps.model.LookupProtectionType" >>>>>>>auto-complete="false"> >>>>>>><map-to xml="protection-type"/> >>>>>>><field name="protectionTypeId"> >>>>>>><bind-xml name="protection-type-id" node="attribute"/> </field> >>>>>>></class> </mapping> >>>>>>> >>>>>>>A Species has a Hashset of Protection objects. It also has many >>>>>>>other Objects associated with it in a similar way, but I'm not >>>>>>>interested in generating the XML for those (yet). >>>>>>> >>>>>>>A Protection has a LookupProtection object, and a >> >>protectionName String. >> >>>>>>>A LookupProtection object has a LookupProtectionType object. >>>>>>> >>>>>>>A LookupProtectionType has a protectionTypeId (long) >>>>>>> >>>>>>>Below is the java code of the LookupProtectionType >> >>class, you will >> >>>>>>>see it has a relationship back to the LookupProtection >> >>object, but >> >>>>>>>I don't want to show this within the XML. Most of the >> >>Objects also >> >>>>>>>have similar >>>>>>>2 way relationships. >>>>>>> >>>>>>>public class LookupProtectionType implements >> >>java.io.Serializable >> >>>>>>>{ >>>>>>> >>>>>>> >>>>>>> // Fields >>>>>>> >>>>>>> private long protectionTypeId; >>>>>>> private String protectionType; >>>>>>> private Set lookupProtections = new HashSet(0); >>>>>>> >>>>>>> >>>>>>> // Constructors >>>>>>> >>>>>>> /** default constructor */ >>>>>>> public LookupProtectionType() { >>>>>>> } >>>>>>> >>>>>>> /** minimal constructor */ >>>>>>> public LookupProtectionType(long protectionTypeId) { >>>>>>> this.protectionTypeId = protectionTypeId; >>>>>>> } >>>>>>> >>>>>>> /** full constructor */ >>>>>>> public LookupProtectionType(long protectionTypeId, String >>>>>>>protectionType, Set lookupProtections) { >>>>>>> this.protectionTypeId = protectionTypeId; >>>>>>> this.protectionType = protectionType; >>>>>>> this.lookupProtections = lookupProtections; >>>>>>> } >>>>>>> >>>>>>> >>>>>>> >>>>>>> // Property accessors >>>>>>> >>>>>>> public long getProtectionTypeId() { >>>>>>> return this.protectionTypeId; >>>>>>> } >>>>>>> >>>>>>> public void setProtectionTypeId(long protectionTypeId) { >>>>>>> this.protectionTypeId = protectionTypeId; >>>>>>> } >>>>>>> >>>>>>> public String getProtectionType() { >>>>>>> return this.protectionType; >>>>>>> } >>>>>>> >>>>>>> public void setProtectionType(String protectionType) { >>>>>>> this.protectionType = protectionType; >>>>>>> } >>>>>>> >>>>>>> public Set getLookupProtections() { >>>>>>> return this.lookupProtections; >>>>>>> } >>>>>>> >>>>>>> public void setLookupProtections(Set lookupProtections) { >>>>>>> this.lookupProtections = lookupProtections; >>>>>>> } >>>>>>> >>>>>>> >>>>>>>} >>>>>>> >>>>>>> >>>>>>>Within the Hibernate mapping I made all the >> >>relationships Lazy, so >> >>>>>>>they should only load when their get method is called. >>>>>>> >>>>>>>When I test the marshalling, I can see all the >> >>Non-mapped objects >> >>>>>>>being queried from the database. >>>>>>>I have tried mapping all the fields and setting them as >> >>Trasient, >> >>>>>>>but that seemed to have no effect. >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>>Werner Guttmann wrote: >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>>>Andrew, >>>>>>>> >>>>>>>>Can you please show us the relevant mapping file >> >>section you are >> >>>>>>>>using to 'disable' some of the relations ? >>>>>>>> >>>>>>>>Thanks >>>>>>>>Werner >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>>>-----Original Message----- >>>>>>>>>From: Andrew Mason [mailto:[EMAIL PROTECTED] >>>>>>>>>Sent: Montag, 13. Februar 2006 11:56 >>>>>>>>>To: [email protected] >>>>>>>>>Subject: [castor-user] Castor marshalling Hibernate Pojos >>>>>>>>> >>>>>>>>>Hello, >>>>>>>>>I apologise if this topic has been covered before - if so a >>>>>>>>>pointer to the relevent posts will be appreciated. >>>>>>>>> >>>>>>>>>I am using Hibernate as my object persistence layer >> >>(sorry but I >> >>>>>>>>>can't use Castor JDO due to political reasons). >>>>>>>>> >>>>>>>>>I wish to use Castor XML to marshall the pojos into >> >>xml documents. >> >>>>>>>>>Many of the objects have relationships with objects that are >>>>>>>>>required from a database perspective, but are not >> >>required within >> >>>>>>>>>the XML. >>>>>>>>>For example >>>>>>>>> >>>>>>>>>Species has a one-to-many relationship with Predator. >>>>>>>>>Predator has a one-to-many relationship with Species. >>>>>>>>> >>>>>>>>>When I marshal a Species object I want to include it's >> >>predators, >> >>>>>>>>>however, I do not want to include all the Species the predator >>>>>>>>>preys upon within the Species XML document. >>>>>>>>> >>>>>>>>>I assumed that by writing a mapping document for >> >>Predator, that >> >>>>>>>>>did not include rerlationship with Species, Castor would not >>>>>>>>>bother calling the getPreySpecies method. >>>>>>>>>What I am finding is that despite the mapping not >> >>including this >> >>>>>>>>>relationship, the method is still being called, causing more >>>>>>>>>species to be instantiated, thus causing more predators to be >>>>>>>>>instantiated and so on until my machine runs out of memory! >>>>>>>>> >>>>>>>>>Is there any way of ensuring that the Marshaller pays strict >>>>>>>>>attention to the Map, and doesn't call methods that >> >>are not defined? >> >>>>>>>>> >>>>>>>>>Thanks >>>>>>>>> >>>>>>>>>-- >>>>>>>>>************************************************* >>>>>>>>>Andrew Mason >>>>>>>>>Environ-IT Ltd. >>>>>>>>>Tel.: 01899 880200 >>>>>>>>>Mob.: 07919 967494 >>>>>>>>>E-mail: [EMAIL PROTECTED] >>>>>>>>>************************************************* >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>>------------------------------------------------- >>>>>>>>>If you wish to unsubscribe from this list, please send >> >>an empty >> >>>>>>>>>message to the following address: >>>>>>>>> >>>>>>>>>[EMAIL PROTECTED] >>>>>>>>>------------------------------------------------- >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>> >>>>>>>>------------------------------------------------- >>>>>>>>If you wish to unsubscribe from this list, please send an empty >>>>>>>>message to the following address: >>>>>>>> >>>>>>>>[EMAIL PROTECTED] >>>>>>>>------------------------------------------------- >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>> >>>>>>>-- >>>>>>>************************************************* >>>>>>>Andrew Mason >>>>>>>Environ-IT Ltd. >>>>>>>Tel.: 01899 880200 >>>>>>>Mob.: 07919 967494 >>>>>>>E-mail: [EMAIL PROTECTED] >>>>>>>************************************************* >>>>>>> >>>>>>> >>>>>>> >>>>>>>------------------------------------------------- >>>>>>>If you wish to unsubscribe from this list, please send an empty >>>>>>>message to the following address: >>>>>>> >>>>>>>[EMAIL PROTECTED] >>>>>>>------------------------------------------------- >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>> >>>>>------------------------------------------------- >>>>>If you wish to unsubscribe from this list, please send an empty >>>>>message to the following address: >>>>> >>>>>[EMAIL PROTECTED] >>>>>------------------------------------------------- >>>>> >>>>> >>>>> >>>>> >>> >>> >>>------------------------------------------------- >>>If you wish to unsubscribe from this list, please send an >> >>empty message >> >>>to the following address: >>> >>>[EMAIL PROTECTED] >>>------------------------------------------------- >>> >>> >>> >>> >>> >> >>-- >>************************************************* >>Andrew Mason >>Environ-IT Ltd. >>Tel.: 01899 880200 >>Mob.: 07919 967494 >>E-mail: [EMAIL PROTECTED] >>************************************************* >> >> >> >>------------------------------------------------- >>If you wish to unsubscribe from this list, please >>send an empty message to the following address: >> >>[EMAIL PROTECTED] >>------------------------------------------------- >> >> >> > > > ------------------------------------------------- > If you wish to unsubscribe from this list, please > send an empty message to the following address: > > [EMAIL PROTECTED] > ------------------------------------------------- -- Syscon Ingenieurbüro für Meß- und Datentechnik GmbH Ralf Joachim Raiffeisenstraße 11 D-72127 Kusterdingen Germany Tel. +49 7071 3690 52 Mobil: +49 173 9630135 Fax +49 7071 3690 98 Email: [EMAIL PROTECTED] Web: www.syscon-world.de ------------------------------------------------- If you wish to unsubscribe from this list, please send an empty message to the following address: [EMAIL PROTECTED] -------------------------------------------------
