[jira] Created: (OPENJPA-204) Nesting of Emebedded in Embeddable element

["sharath.h (JIRA)" <ji...@apache.org>]

Nesting of Emebedded in Embeddable element
------------------------------------------

                 Key: OPENJPA-204
                 URL: https://issues.apache.org/jira/browse/OPENJPA-204
             Project: OpenJPA
          Issue Type: Bug
          Components: jpa
    Affects Versions: 0.9.6
            Reporter: sharath.h


Hi,
 
In orm_1_0.xsd or orm-xsd.rsrc files under the <xsd:complexType name="embeddable-attributes"> the <xsd:element name="embedded" type="orm:embedded"    minOccurs="0" maxOccurs="unbounded"/> is not present.
 
Please let me know if there is any valid reason behind it.Was the embedded element in embeddable-attributes was accidently missed out?
 
I faced the issue when i tried the example something like as shown below:
 
class A
{
  int id;
  B objB;
  
}
 
class B
{
  String str1;
  Date d;
  C objC;
}
 
class C
{
   String str2;
}
 
I wanted to persist object A into a single table by having object B as embedded and object B inturn having object C as embedded.
My corresponding orm mapping file is as shown below:
 
<?xml version="1.0" encoding="UTF-8"?>
<entity-mappings xmlns="http://java.sun.com/xml/ns/persistence/orm" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence/orm orm_1_0.xsd" version="1.0">
 
<entity class="A">    
<table name="TableA"/>    
<attributes> 
<id name="id">        
 <column name="ID"/>                   
</id>  
<embedded name="objB"/>
</attributes>
</entity>
 
<embeddable class="B">      
<attributes>          
<basic name="str1">
   <column name="COL2"/>
</basic>     
<basic name="d">
   <column name="DateCol"/>
</basic>
<embedded name="objC"/>
</embeddable>

<embeddable class="C">      
<attributes> 
<basic name="str2">
   <column name="COL3"/>
</basic>     
</embeddable>

</entity-mappings>
 
This was not possible due to orm schema restriction.
 
 
 
Thanks,
Regards,
Sharath.H

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[jira] Resolved: (OPENJPA-204) Nesting of Emebedded in Embeddable element

["Patrick Linskey (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/OPENJPA-204?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Patrick Linskey resolved OPENJPA-204.
-------------------------------------

    Resolution: Won't Fix

This is a limitation of the JPA spec. From section 9.1.34: 

<spec>Only Basic, Column, Lob, Temporal, and Enumerated mapping annotations may portably be used to map the persistent fields or properties of classes annotated as Embeddable.</spec>

OpenJPA supports embedded fields in embeddable instances, as well as various other usages of embedded things, but those are extensions to the spec. Due to OPENJPA-125, you can only configure nested embeddeds via annotations currently.

Marking this as WNF, although in some ways it might be better closed as a duplicate of OPENJPA-125, since once we resolve OPENJPA-125, there will be a way to do this in XML (albeit not the spec-defined XML).

Note that the JPA spec team defines the orm.xsd; OpenJPA is just an implementation of that spec. So, we can't change the orm.xsd. I believe, however, that this is an issue that the JPA 2 spec team will probably consider.

> Nesting of Emebedded in Embeddable element
> ------------------------------------------
>
>                 Key: OPENJPA-204
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-204
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: jpa
>    Affects Versions: 0.9.6
>            Reporter: sharath.h
>
> Hi,
>  
> In orm_1_0.xsd or orm-xsd.rsrc files under the <xsd:complexType name="embeddable-attributes"> the <xsd:element name="embedded" type="orm:embedded"    minOccurs="0" maxOccurs="unbounded"/> is not present.
>  
> Please let me know if there is any valid reason behind it.Was the embedded element in embeddable-attributes was accidently missed out?
>  
> I faced the issue when i tried the example something like as shown below:
>  
> class A
> {
>   int id;
>   B objB;
>   
> }
>  
> class B
> {
>   String str1;
>   Date d;
>   C objC;
> }
>  
> class C
> {
>    String str2;
> }
>  
> I wanted to persist object A into a single table by having object B as embedded and object B inturn having object C as embedded.
> My corresponding orm mapping file is as shown below:
>  
> <?xml version="1.0" encoding="UTF-8"?>
> <entity-mappings xmlns="http://java.sun.com/xml/ns/persistence/orm" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence/orm orm_1_0.xsd" version="1.0">
>  
> <entity class="A">    
> <table name="TableA"/>    
> <attributes> 
> <id name="id">        
>  <column name="ID"/>                   
> </id>  
> <embedded name="objB"/>
> </attributes>
> </entity>
>  
> <embeddable class="B">      
> <attributes>          
> <basic name="str1">
>    <column name="COL2"/>
> </basic>     
> <basic name="d">
>    <column name="DateCol"/>
> </basic>
> <embedded name="objC"/>
> </embeddable>
> <embeddable class="C">      
> <attributes> 
> <basic name="str2">
>    <column name="COL3"/>
> </basic>     
> </embeddable>
> </entity-mappings>
>  
> This was not possible due to orm schema restriction.
>  
>  
>  
> Thanks,
> Regards,
> Sharath.H

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