[Hibernate-issues] [Hibernate-JIRA] Commented: (HB-242) <meta attribute="implements"> does not behave as expected

[<leg...@at...>]

The following comment has been added to this issue:

     Author: abe zafar
    Created: Mon, 11 Aug 2003 12:05 PM
       Body:
Maybe this example will make my point more clear:

<?xml version="1.0"?> 
<!DOCTYPE hibernate-mapping PUBLIC 
    "-//Hibernate/Hibernate Mapping DTD//EN"
    "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd"> 

<hibernate-mapping> 
    <class name="com.rhi.domain.impl.Person" table="people">     
    
        <meta attribute="implements">com.rhi.domain.Person</meta>
    
        <composite-id name="pk" class="com.rhi.domain.impl.id.PersonPk">
            <key-property name="personId" column="person_id" type="java.lang.Long"/> 
            <key-property name="personRegionId"  column="person_region_id" type="java.lang.Long"/> 
        </composite-id>
        
        <property name="number" column="people_no" type="java.lang.Long"/>
        <property name="firstName" column="first_name" type="java.lang.String"/> 
        <property name="middleName" column="middle_name" type="java.lang.String"/> 
        <property name="lastName" column="last_name" type="java.lang.String"/> 
        
    </class> 
    
</hibernate-mapping> 


The intention in this example is that the class "com.rhi.domain.impl.Person" should implement the interface "com.rhi.domain.Person" and the class "com.rhi.domain.impl.id.PersonPk" should NOT implement any interfaces. 

But what happens is both classes "com.rhi.domain.impl.Person" and "com.rhi.domain.impl.id.PersonPk" end up implementing "com.rhi.domain.Person".

Now you are suggesting to put inherit="false" at the class level but that doesn't do what I need because I still want "com.rhi.domain.impl.Person" to implement the interface "com.rhi.domain.Person".



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  http://opensource.atlassian.com/projects/hibernate/secure/ViewIssue.jspa?key=HB-242


Here is an overview of the issue:
---------------------------------------------------------------------
        Key: HB-242
    Summary: <meta attribute="implements"> does not behave as expected
       Type: Bug

     Status: Closed
   Priority: Major
 Resolution: REJECTED

    Project: Hibernate2
 Components: 
             toolset
   Versions:
             2.0.1

   Assignee: 
   Reporter: abe zafar

    Created: Sun, 10 Aug 2003 2:40 AM
    Updated: Sun, 10 Aug 2003 6:37 AM
Environment: JDK1.4

Description:
If the tag <meta attribute="implements">com.hp.Printer</meta> is inserted as a child of the class tag it properly adds the implement clause to the class. But if that class also contained a <composite-id> tag which indicated a class then that class would also UNEXPECTEDLY implement the interface "com.hp.Printer".


So in the following example:

<class name="com.hp.ColorPrinter">
<meta attribute="implements">com.hp.Printer</meta> 
<composite-id
        name="propertyName"
        class="com.hp.PrinterId">

        <key-property name="propertyName" type="typename" column="column_name"/>
        <key-many-to-one name="propertyName class="ClassName" column="column_name"/>
</composite-id>

Both "ColorPrinter" and "PrinterId" end up implementing "com.hp.Printer". ColorPrinter is expected to implement the interface, but PrinterId should not implement the interface.
        






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