Hallo Armin,
I've changed the mapping and the code but nothing changed.
I can't get the Suppliers of an Item ;-((
Mapping now:
<class-descriptor
class="demo.myshop.model.ojb2.Supplier"
table="OJB_SUPPLIER">
<field-descriptor
name="supId"
column="SUP_ID"
jdbc-type="INTEGER"
primarykey="true"
autoincrement="true"/>
<field-descriptor
name="fk_bpid"
column="FK_BPID"
jdbc-type="INTEGER"
primarykey="false"
access="anonymous"
autoincrement="false"/>
<field-descriptor
name="shippingCost"
column="SHIPPINGCOST"
jdbc-type="INTEGER"/>
<reference-descriptor
name="businessPartner"
class-ref="demo.myshop.model.ojb2.BusinessPartner">
<foreignkey field-ref="fk_bpid"/>
</reference-descriptor>
<collection-descriptor
name="items"
element-class-ref="demo.myshop.model.ojb2.SellableItem"
auto-retrieve="true"
auto-update="true"
indirection-table="OJB_SUPPLIER_ITEM">
<fk-pointing-to-this-class column="SUPPLIERID"/>
<fk-pointing-to-element-class column="ITEMID"/>
</collection-descriptor>
</class-descriptor>
I hope you have some more ideas.
Thanks,
Stephan
-----Original Message-----
From: Armin Waibel [mailto:[EMAIL PROTECTED]
Sent: Wednesday, December 17, 2003 4:57 PM
To: OJB Users List
Subject: Re: Mapping problem
Hi Stephan,
Stephan Wannenwetsch wrote:
> Hallo Armin,
>
> the insert error has gone, but now I have again the problem with
> recieving the suppliers from an item.
>
I mean something like that:
> Mapping changed to:
> <class-descriptor
> class="demo.myshop.model.ojb2.Supplier"
> table="OJB_SUPPLIER">
add new field for PK of Supplier
==> <field-descriptor
> name="supId"
> column="SUP_ID"
> jdbc-type="INTEGER"
> primarykey="true"
==> autoincrement="true"/>
let the FK field to BusinessPartner be anonymous
> <field-descriptor
> name="fk_bpid"
> column="FK_BPID"
jdbc-type="INTEGER"
<== primarykey="true"
==> primarykey="false"
==> access="anonymous"
autoincrement="false"/>
>
> <field-descriptor
> name="shippingCost"
> column="SHIPPINGCOST"
> jdbc-type="INTEGER"/>
>
> <reference-descriptor
> name="businessPartner"
> class-ref="demo.myshop.model.ojb2.BusinessPartner">
> <foreignkey field-ref="fk_bpid"/>
> </reference-descriptor>
>
> <collection-descriptor
> name="items"
> element-class-ref="demo.myshop.model.ojb2.SellableItem"
> auto-retrieve="true"
> auto-update="true"
> indirection-table="OJB_SUPPLIER_ITEM">
> <fk-pointing-to-this-class column="SUPPLIERID"/>
> <fk-pointing-to-element-class column="ITEMID"/>
> </collection-descriptor>
>
> </class-descriptor>
>
> I also added the fk-bpid field to the Supplier.class + getters/setters
>
setter+getter are only necessary if you want to use a PersistentField
implementation which use bean compliant method access.
regards,
Armin
> SellableItem:
>
> package demo.myshop.model.ojb2;
>
> import java.util.Collection;
>
> public interface SellableItem {
>
> public String getDescription();
>
> public Integer getItemId();
>
> public Integer getPrice();
>
> public void setDescription(String description);
>
> public void setPrice(Integer price);
>
> public Collection getSuppliers();
>
> public void setSuppliers(Collection supplier);
>
> public void addSupplier(Supplier supplier);
>
> public String getConcreteClass();
>
> public String getOjbConcreteClass();
>
> public void setOjbConcreteClass(String ojbConcreteClass);
> }
>
> Implemented for example in Service Contract:
>
> package demo.myshop.model.ojb2;
> import java.util.Collection;
> import java.util.HashSet;
>
> public class ServiceContract implements SellableItem {
>
> private Integer itemId;
> protected String ojbConcreteClass;
> private String description;
> private Integer price;
> private Integer period;
> private Collection suppliers;
>
> public ServiceContract() {
> ojbConcreteClass = ServiceContract.class.getName();
> suppliers = new HashSet();
> }
>
> public String getDescription() {
> return description;
> }
>
> public Integer getItemId() {
> return itemId;
> }
>
> public Integer getPeriod() {
> return period;
> }
>
> public Integer getPrice() {
> return price;
> }
>
> public void setDescription(String description) {
> this.description = description;
> }
>
> public void setPeriod(Integer period) {
> this.period = period;
> }
>
> public void setPrice(Integer price) {
> this.price = price;
> }
>
>
> public Collection getSuppliers() {
> return suppliers;
> }
>
> public void setSuppliers(Collection suppliers) {
> this.suppliers = suppliers;
> }
>
> public void addSupplier(Supplier supplier){
> suppliers.add(supplier);
> }
>
> public String getConcreteClass()
> {
> return ojbConcreteClass;
> }
>
> public String getOjbConcreteClass()
> {
> return ojbConcreteClass;
> }
>
> public void setOjbConcreteClass(String ojbConcreteClass)
> {
> this.ojbConcreteClass = ojbConcreteClass;
> }
> }
>
> Test code:
>
> broker.clearCache();
> System.out.println("Cache cleared"); //for debug only
>
> Criteria crit6 = new Criteria();
> crit6.addEqualTo("itemid", "23");
> System.out.println("Criterias created"); //for debug only
>
> Query query6 = QueryFactory.newQuery(ServiceContract.class, crit6);
> Collection res6 = broker.getCollectionByQuery(query6);
> System.out.println("Query executed"); //for debug only
>
> Iterator iter6 = res6.iterator();
> System.out.println("Iterator received"); //for debug only
>
> if (iter6.hasNext() == false) System.out.println("Item count = 0");
> //for debug only
> else System.out.println("Item count > 0"); //for debug only
>
> while (iter6.hasNext()){
> ServiceContract item6 = (ServiceContract) iter6.next();
> System.out.println("Item:" + item6.getDescription() +" " +
> item6.getPrice()); //for debug only
> Iterator iter7 = item6.getSuppliers().iterator();
> if (iter7.hasNext() == false) System.out.println("Item count =
> 0"); //for debug only
> else System.out.println("Item count > 0"); //for debug only
> while (iter7.hasNext()){
> Supplier sup7 = (Supplier) iter7.next();
> System.out.println("Supplier of Item:" +
> sup7.getBusinessPartner().getName() + " " +
> sup7.getShippingCosts()); //for debug only
> }
> }
>
> broker.close();
> System.out.println("Brooker closed"); //for debug only
>
> Debug message output:
>
> Cache cleared
> Criterias created
> Query executed
> Iterator received
> Item count > 0
> Item:SC2 200
> Item count = 0 <== SHOULDN'T BE 0
> Brooker closed
> Test succeded !!!!
>
> Testdata
>
> OJB_ITEM:
> ITEMID CLASS_NAME DESCRIPTION
> PRICE PERIOD WEIGHT
> 21 demo.myshop.model.ojb2.Product P1 100 <NULL>
> 1000
> 22 demo.myshop.model.ojb2.Product P2 200 <NULL>
> 2000
> 23 demo.myshop.model.ojb2.ServiceContract SC2 200 20
> <NULL>
> 24 demo.myshop.model.ojb2.ServiceContract SC1 100 10
> <NULL>
>
> OJB_SUPPLIER:
> FK_BPID SHIPPINGCOST
> 25 120
> 26 130
>
> OJB_SUPPLIER_ITEM:
> ITEMID SUPPLIERID
> 21 25
> 22 25
> 22 26
> 23 25
> 23 26
> 24 25
>
> I hope you can find my error ;-)
>
> Thanks,
> Stephan
>
> -----Original Message-----
> From: Armin Waibel [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, December 17, 2003 11:13 AM
> To: OJB Users List
> Subject: Re: Mapping problem
>
>
> Hi again,
>
> Stephan Wannenwetsch wrote:
>
>
>>Hallo Armin,
>>
>>1) Nothing changed in mapping for Supplier
>>2) "fk_bpid" is the primary key for this class/table, but it is also
>>the foreign key of the 1:1 relationship to BusinessPartner
>
>
> I think this is problematic, because the pc object does not declare such
> a field (you set to anonymous). OJB try to build a Identity object for
> each pc object based on the PK fields and the only primarykey field in
> Supplier is declared anonymous ...
> Recommend to introduce a PK field for Supplier and set primarykey false
> for fk_bpid.
>
>
>>3) I'm not quite sure if I have to declare a field-descriptor for
>>"SUPPLIERID", because in the docs ("Advanced O/R") nothing is
>>mentioned.
>
>
> yes, you are right - my fault. I'm not an expert for metadata stuff ;-)
>
>
>>4) The SQL-Error occures just after I had changed the mapping of
>>SellableItem, Product, ServiceContract as Wally said, before insert
>>was not the problem. So perhaps the mapping of the Products is the
>>problem !?
>>
>
> But the mapping for these classes looks fine to me.
>
> regards,
> Armin
>
>
>>Thanks,
>>
>>Stephan
>>
>>-----Original Message-----
>>From: Armin Waibel [mailto:[EMAIL PROTECTED]
>>Sent: Wednesday, December 17, 2003 10:29 AM
>>To: OJB Users List
>>Subject: Re: Mapping problem
>>
>>
>>Hi Stephan,
>>
>>hmm, how does your mapping for demo.myshop.model.ojb2.Supplier
>>look like (nothing changed from your first post)?
>>
>> From your first post
>>
>> >> <class-descriptor
>> >> class="demo.myshop.model.ojb2.Supplier"
>> >> table="OJB_SUPPLIER">
>> >> <field-descriptor
>> >> name="fk_bpid"
>> >> column="FK_BPID"
>> >> jdbc-type="INTEGER"
>> >> primarykey="true"
>>
>>Why you set primarykey 'true' for this anonymous field?
>>
>> >> autoincrement="false"
>> >> access="anonymous"/>
>> >>
>> >> <field-descriptor
>> >> name="shippingCost"
>> >> column="SHIPPINGCOST"
>> >> jdbc-type="INTEGER"/>
>> >>
>> >> <reference-descriptor
>> >> name="businessPartner"
>> >> class-ref="demo.myshop.model.ojb2.BusinessPartner">
>> >> <foreignkey field-ref="fk_bpid"/>
>> >> </reference-descriptor>
>> >>
>> >> <collection-descriptor
>> >> name="items"
>> >> element-class-ref="demo.myshop.model.ojb2.SellableItem"
>> >> auto-retrieve="true"
>> >> auto-update="true"
>> >> indirection-table="OJB_SUPPLIER_ITEM">
>> >> <fk-pointing-to-this-class column="SUPPLIERID"/>
>>
>>Can't see a field-descriptor with SUPPLIERID column in this
>>class-descriptor.
>>
>> >> <fk-pointing-to-element-class column="ITEMID"/>
>> >> </collection-descriptor>
>> >>
>> >> </class-descriptor>
>>
>>regards,
>>Armin
>>
>>Stephan Wannenwetsch wrote:
>>
>>
>>>Hi Armin,
>>>
>>>I checked it but nothing changed. I also removed all data from the
>>>DB-tables but nothing changed, too.
>>>
>>>Thanks,
>>>Stephan
>>>
>>>-----Original Message-----
>>>From: Armin Waibel [mailto:[EMAIL PROTECTED]
>>>Sent: Monday, December 15, 2003 6:03 PM
>>>To: OJB Users List
>>>Subject: Re: Mapping problem
>>>
>>>
>>>Hi,
>>>
>>>maybe sequence-name "algorithm" had problems. Try to remove related
>>>row in OJB_HL_SEQ table (name of the first found extent class table name). You can
>>>do a quick check using SequenceManagerInMemoryImpl in your test.
>>>If your test pass, it's a H/L sequence manager problem.
>>>
>>>regards,
>>>Armin
>>>
>>>Stephan Wannenwetsch wrote:
>>>
>>>
>>>
>>>>Hi Wally,
>>>>
>>>>I'm using the following sequence-manager:
>>>>
>>>><sequence-manager
>>>>className="org.apache.ojb.broker.util.sequence.SequenceManagerHighLowImpl">
>>>> <attribute attribute-name="grabSize" attribute-value="20"/>
>>>> <attribute attribute-name="autoNaming" attribute-value="true"/>
>>>> <attribute attribute-name="globalSequenceId" attribute-value="false"/>
>>>> <attribute attribute-name="globalSequenceStart"
>>>>attribute-value="10000"/> </sequence-manager>
>>>>
>>>>Stephan
>>>>
>>>>
>>>>-----Original Message-----
>>>>From: Gelhar, Wallace Joseph [mailto:[EMAIL PROTECTED]
>>>>Sent: Monday, December 15, 2003 5:35 PM
>>>>To: OJB Users List
>>>>Subject: RE: Mapping problem
>>>>
>>>>
>>>>Hi Stephan,
>>>>
>>>>Sounds like a sequence manager configuration problem. A PK must be
>>>>unique within an extent hierarchy, so you cannot use an IDENTITY
>>>>column for a PK. What sequence manager are you using?
>>>>
>>>>Wally
>>>>
>>>>
>>>>
>>>>-----Original Message-----
>>>>From: Stephan Wannenwetsch [mailto:[EMAIL PROTECTED]
>>>>Sent: Monday, December 15, 2003 10:16 AM
>>>>To: OJB Users List
>>>>Subject: RE: Mapping problem
>>>>
>>>>
>>>>Hallo Wally,
>>>>
>>>>I've changed the mapping into:
>>>><class-descriptor class="demo.myshop.model.ojb2.SellableItem">
>>>> <extent-class class-ref="demo.myshop.model.ojb2.ServiceContract" />
>>>> <extent-class class-ref="demo.myshop.model.ojb2.Product" />
>>>></class-descriptor>
>>>>
>>>><class-descriptor
>>>> class="demo.myshop.model.ojb2.ServiceContract"
>>>> table="OJB_SELLABLEITEM">
>>>>
>>>> <field-descriptor
>>>> name="itemId"
>>>> column="ITEMID"
>>>> jdbc-type="INTEGER"
>>>> primarykey="true"
>>>> autoincrement="true"/>
>>>>
>>>> <field-descriptor
>>>> name="ojbConcreteClass"
>>>> column="CLASS_NAME"
>>>> jdbc-type="VARCHAR"/>
>>>>
>>>> <field-descriptor
>>>> name="description"
>>>> column="DESCRIPTION"
>>>> jdbc-type="VARCHAR"/>
>>>>
>>>> <field-descriptor
>>>> name="price"
>>>> column="PRICE"
>>>> jdbc-type="INTEGER"/>
>>>>
>>>> <field-descriptor
>>>> name="period"
>>>> column="PERIOD"
>>>> jdbc-type="INTEGER"/>
>>>>
>>>> <collection-descriptor
>>>> name="suppliers"
>>>> element-class-ref="demo.myshop.model.ojb2.Supplier"
>>>> auto-retrieve="true"
>>>> auto-update="true"
>>>> indirection-table="OJB_SUPPLIER_ITEM">
>>>> <fk-pointing-to-this-class column="ITEMID"/>
>>>> <fk-pointing-to-element-class column="SUPPLIERID"/>
>>>> </collection-descriptor>
>>>> </class-descriptor>
>>>>
>>>> <class-descriptor
>>>> class="demo.myshop.model.ojb2.Product"
>>>> table="OJB_SELLABLEITEM">
>>>>
>>>> <field-descriptor
>>>> name="itemId"
>>>> column="ITEMID"
>>>> jdbc-type="INTEGER"
>>>> primarykey="true"
>>>> autoincrement="true"/>
>>>>
>>>> <field-descriptor
>>>> name="ojbConcreteClass"
>>>> column="CLASS_NAME"
>>>> jdbc-type="VARCHAR"/>
>>>>
>>>> <field-descriptor
>>>> name="description"
>>>> column="DESCRIPTION"
>>>> jdbc-type="VARCHAR"/>
>>>>
>>>> <field-descriptor
>>>> name="price"
>>>> column="PRICE"
>>>> jdbc-type="INTEGER"/>
>>>>
>>>> <field-descriptor
>>>> name="weight"
>>>> column="WEIGHT"
>>>> jdbc-type="INTEGER"/>
>>>> <collection-descriptor
>>>> name="suppliers"
>>>> element-class-ref="demo.myshop.model.ojb2.Supplier"
>>>> auto-retrieve="true"
>>>> auto-update="true"
>>>> indirection-table="OJB_SUPPLIER_ITEM">
>>>> <fk-pointing-to-this-class column="ITEMID"/>
>>>> <fk-pointing-to-element-class column="SUPPLIERID"/>
>>>> </collection-descriptor>
>>>> </class-descriptor>
>>>>
>>>>
>>>>
>>>>But now I get an error when I store a supplier (primary key - error,
>>>>pk not unique in OJB_SUPPLIER_ITEM, can't insert). Transaction
>>>>started
>>>>
>>>>
>>>>[org.apache.ojb.broker.accesslayer.JdbcAccessImpl] ERROR:
>>>>SQLException during the execution of the Update SQL query (for a
>>>>demo.myshop.model.ojb2.Supplier): [Microsoft][SQLServer 2000 Driver
>>>>for JDBC][SQLServer]Verletzung der PRIMARY KEY-Einschr�nkung
>>>>'PK_OJB_SUPPLIER_ITEM'. Ein doppelter Schl�ssel kann in das
>>>>OJB_SUPPLIER_ITEM-Objekt nicht eingef�gt werden.
>>>>[Microsoft][SQLServer 2000 Driver for JDBC][SQLServer]Verletzung der
>>>>PRIMARY KEY-Einschr�nkung 'PK_OJB_SUPPLIER_ITEM'. Ein doppelter
>>>>Schl�ssel kann
>>>
>>>i n das OJB_SUPPLIER_ITEM-Objekt nicht eingef�gt werden.
>>>
>>>
>>>
>>>>java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for
>>>>JDBC][SQLServer]Verletzung der PRIMARY KEY-Einschr�nkung 'PK_OJB_SUPPLIER_ITEM'.
>>>>Ein doppelter Schl�ssel kann in das OJB_SUPPLIER_ITEM-Objekt nicht eingef�gt
>>>>werden.
>>>> at com.microsoft.jdbc.base.BaseExceptions.createException(Unknown Source)
>>>> at com.microsoft.jdbc.base.BaseExceptions.getException(Unknown
>>>>Source)
>>>>
>>>>Some more ideas ???
>>>>
>>>>Thanks,
>>>>Stephan
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>-----Original Message-----
>>>>From: Gelhar, Wallace Joseph [mailto:[EMAIL PROTECTED]
>>>>Sent: Monday, December 15, 2003 3:44 PM
>>>>To: OJB Users List
>>>>Subject: RE: Mapping problem
>>>>
>>>>
>>>>Hi Stephan,
>>>>
>>>>OJB does not support class descriptor inheritance for <extent-class>
>>>>elements. Try moving your "common" fields from Sellable item into
>>>>each of the concrete class descriptors and making Sellable item
>>>>non-concrete (it is only an interface after all) such as:
>>>>
>>>><class-descriptor class="demo.myshop.model.ojb2.SellableItem" >
>>>> <extent-class class-ref="demo.myshop.model.ojb2.ServiceContract"
>>>>/>
>>>> <extent-class class-ref="demo.myshop.model.ojb2.Product" />
>>>></class-descriptor>
>>>>
>>>>Hope this helps.
>>>>
>>>>Wally
>>>>
>>>>-----Original Message-----
>>>>From: Stephan Wannenwetsch [mailto:[EMAIL PROTECTED]
>>>>Sent: Monday, December 15, 2003 4:16 AM
>>>>To: [EMAIL PROTECTED]
>>>>Subject: Mapping problem
>>>>
>>>>
>>>>Hallo,
>>>>
>>>>I've got a problem retrieving objects from a m:n relationship:
>>>>
>>>>Object model:
>>>>
>>>>class Supplier;
>>>>=>Collection items;
>>>>
>>>>Interface SellableItem;
>>>>=>Collection suppliers;
>>>>
>>>>class Product implements SellableItem;
>>>>=> Collection suppliers;
>>>>
>>>>class ServiceContract implements SellableItem;
>>>>=> Collection suppliers;
>>>>
>>>>Of course there are some more attributes in each class with the
>>>>corresponding getter and setters.
>>>>
>>>>I use an itermediate table OJB_SUPPLIER_ITEM to realise the m:n
>>>>relationship.
>>>>
>>>>Every thing works fine coming from the supplier side and retriving
>>>>the related items of a supplier but I'm not able to retrieve the
>>>>related suppliers of an item.
>>>>
>>>>I hope someone can help me.
>>>>
>>>>Thanks,
>>>>Stephan
>>>>
>>>>Mapping:
>>>>
>>>><class-descriptor
>>>> class="demo.myshop.model.ojb2.Supplier"
>>>> table="OJB_SUPPLIER">
>>>> <field-descriptor
>>>> name="fk_bpid"
>>>> column="FK_BPID"
>>>> jdbc-type="INTEGER"
>>>> primarykey="true"
>>>> autoincrement="false"
>>>> access="anonymous"/>
>>>>
>>>> <field-descriptor
>>>> name="shippingCost"
>>>> column="SHIPPINGCOST"
>>>> jdbc-type="INTEGER"/>
>>>>
>>>> <reference-descriptor
>>>> name="businessPartner"
>>>> class-ref="demo.myshop.model.ojb2.BusinessPartner">
>>>> <foreignkey field-ref="fk_bpid"/>
>>>> </reference-descriptor>
>>>>
>>>> <collection-descriptor
>>>> name="items"
>>>> element-class-ref="demo.myshop.model.ojb2.SellableItem"
>>>> auto-retrieve="true"
>>>> auto-update="true"
>>>> indirection-table="OJB_SUPPLIER_ITEM">
>>>> <fk-pointing-to-this-class column="SUPPLIERID"/>
>>>> <fk-pointing-to-element-class column="ITEMID"/>
>>>> </collection-descriptor>
>>>>
>>>></class-descriptor>
>>>>
>>>><class-descriptor
>>>> class="demo.myshop.model.ojb2.SellableItem"
>>>> table="OJB_SELLABLEITEM">
>>>>
>>>> <extent-class class-ref="demo.myshop.model.ojb2.ServiceContract"
>>>>/>
>>>> <extent-class class-ref="demo.myshop.model.ojb2.Product" />
>>>>
>>>> <field-descriptor
>>>> name="itemId"
>>>> column="ITEMID"
>>>> jdbc-type="INTEGER"
>>>> primarykey="true"
>>>> autoincrement="true"/>
>>>>
>>>> <field-descriptor
>>>> name="ojbConcreteClass"
>>>> column="CLASS_NAME"
>>>> jdbc-type="VARCHAR"/>
>>>>
>>>> <field-descriptor
>>>> name="description"
>>>> column="DESCRIPTION"
>>>> jdbc-type="VARCHAR"/>
>>>>
>>>> <field-descriptor
>>>> name="price"
>>>> column="PRICE"
>>>> jdbc-type="INTEGER"/>
>>>>
>>>> <collection-descriptor
>>>> name="suppliers"
>>>> element-class-ref="demo.myshop.model.ojb2.Supplier"
>>>> auto-retrieve="true"
>>>> auto-update="true"
>>>> indirection-table="OJB_SUPPLIER_ITEM">
>>>> <fk-pointing-to-this-class column="ITEMID"/>
>>>> <fk-pointing-to-element-class column="SUPPLIERID"/>
>>>> </collection-descriptor>
>>>> </class-descriptor>
>>>>
>>>><class-descriptor
>>>> class="demo.myshop.model.ojb2.ServiceContract"
>>>> table="OJB_SELLABLEITEM">
>>>>
>>>> <field-descriptor
>>>> name="itemId"
>>>> column="ITEMID"
>>>> jdbc-type="INTEGER"
>>>> primarykey="true"
>>>> autoincrement="true"/>
>>>>
>>>> <field-descriptor
>>>> name="ojbConcreteClass"
>>>> column="CLASS_NAME"
>>>> jdbc-type="VARCHAR"/>
>>>>
>>>> <field-descriptor
>>>> name="description"
>>>> column="DESCRIPTION"
>>>> jdbc-type="VARCHAR"/>
>>>>
>>>> <field-descriptor
>>>> name="price"
>>>> column="PRICE"
>>>> jdbc-type="INTEGER"/>
>>>>
>>>> <field-descriptor
>>>> name="period"
>>>> column="PERIOD"
>>>> jdbc-type="INTEGER"/>
>>>> </class-descriptor>
>>>>
>>>> <class-descriptor
>>>> class="demo.myshop.model.ojb2.Product"
>>>> table="OJB_SELLABLEITEM">
>>>>
>>>> <field-descriptor
>>>> name="itemId"
>>>> column="ITEMID"
>>>> jdbc-type="INTEGER"
>>>> primarykey="true"
>>>> autoincrement="true"/>
>>>>
>>>> <field-descriptor
>>>> name="ojbConcreteClass"
>>>> column="CLASS_NAME"
>>>> jdbc-type="VARCHAR"/>
>>>>
>>>> <field-descriptor
>>>> name="description"
>>>> column="DESCRIPTION"
>>>> jdbc-type="VARCHAR"/>
>>>>
>>>> <field-descriptor
>>>> name="price"
>>>> column="PRICE"
>>>> jdbc-type="INTEGER"/>
>>>>
>>>> <field-descriptor
>>>> name="weight"
>>>> column="WEIGHT"
>>>> jdbc-type="INTEGER"/>
>>>> </class-descriptor>
>>>>
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>>>>
>>>>
>>>
>>>
>>>
>>>
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>>
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