[nhibernate-issues] [JIRA] Commented: (NH-1921) Possibility to improve hbm.xml Mapping file configuration

[NHibernate J. <nh...@gm...>]

    [ http://nhjira.koah.net/browse/NH-1921?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18607#action_18607 ] 

Ayende Rahien commented on NH-1921:
-----------------------------------

Take a look at what XML entities are, they are a way to import some XML from another file.
It looks somewhat like this:

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
    "-//Hibernate/Hibernate Mapping DTD 2.0//EN"
    "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd" [
   <!ENTITY usageTracking SYSTEM "file:./UsageTrackingComponent.xml">
]>
    
<hibernate-mapping>
  <!-- CVS: $Id: DynamicEnum.hbm.xml,v 1.3 2004/01/19 03:57:29 eepstein Exp $ -->

<class 
    name="com.publishworks.common.DynamicEnum" 
    table="dynamic_enum"
    schema="common"
>

   &usageTracking;

</class>
</hibernate-mapping>

> Possibility to improve hbm.xml Mapping file configuration
> ---------------------------------------------------------
>
>                 Key: NH-1921
>                 URL: http://nhjira.koah.net/browse/NH-1921
>             Project:  NHibernate
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions:  2.0.1.GA
>            Reporter: BNReddy
>            Priority: Minor
>         Attachments: Child.xml, Parent.hbm.xml
>
>
> My project is having a lot of hbm.xml files in which most of the hbm.xml files are having same component configuration. 
> Problem is if add/remove a member which should be reflected under database leads to update all hbm.xml files where it is configured.
> I can make it as a separate entity and I can proceed.  Other than this solution, is there any other solution.
> If not, why can't NH allow to use <xi:include href="filename"/> concept. Providing separate xml file for component and ref the xml file where it is required.
> Future changes requires to change only one xml file which will reduce all refered xml files update.
> Please find the attached sample xml files.

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