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From "Emmanuel Lecharny (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DIRSERVER-760) reading .schema files at server start-up
Date Thu, 02 Nov 2006 18:26:17 GMT
    [ http://issues.apache.org/jira/browse/DIRSERVER-760?page=comments#action_12446682 ] 
            
Emmanuel Lecharny commented on DIRSERVER-760:
---------------------------------------------

Norval,

I have created a branche (apacheds-schema) to testyour patch, I have applied it - the pom.xml
should also be atched if we want the project to compile under eclipse - but I need a sample
server.xml to test it, or at least some more doco.

Could we figure out an IM/skype session on the next few days in order to fix this point ?

Thanks !

> reading .schema files at server start-up
> ----------------------------------------
>
>                 Key: DIRSERVER-760
>                 URL: http://issues.apache.org/jira/browse/DIRSERVER-760
>             Project: Directory ApacheDS
>          Issue Type: New Feature
>          Components: core
>    Affects Versions: 1.1.1
>         Environment: N/A
>            Reporter: Norval Hope
>         Attachments: schema_loader.patch
>
>
> I am submitting a patch for a feature I required, and which I've seen a number of queries
about on the DEV list. Currently the only way to get new .schema information into ApacheDS
is to use the Maven2 plugin, requiring a rebuild of the server (not to mention working around
problems like methods being generated which are too long for Java to handle).
> Instead this patch adds support for reading of  specified .schema files from server.xml
at server startup, via a new interface SchemaLoader and a default implementation FileSystemSchemaLoader.
The latter supports reading all files matching a specified regex in a specified directory
(in which case users must be careful to ensure that files appear lexicographically before
their dependant files, ala init.rc in Linux) or reading an ordered list of file names under
a specified directory. An example server.xml snippet is as follows:
>     <property name="bootstrapSchemas">
>       <set>
>         <bean class="org.apache.directory.server.core.schema.bootstrap.AutofsSchema"/>
>         <bean class="org.apache.directory.server.core.schema.bootstrap.CorbaSchema"/>
>         <bean class="org.apache.directory.server.core.schema.bootstrap.CoreSchema"/>
>         <bean class="org.apache.directory.server.core.schema.bootstrap.CosineSchema"/>
>         <bean class="org.apache.directory.server.core.schema.bootstrap.ApacheSchema"/>
>         <bean class="org.apache.directory.server.core.schema.bootstrap.CollectiveSchema"/>
>         <bean class="org.apache.directory.server.core.schema.bootstrap.InetorgpersonSchema"/>
>         <bean class="org.apache.directory.server.core.schema.bootstrap.JavaSchema"/>
>         <bean class="org.apache.directory.server.core.schema.bootstrap.Krb5kdcSchema"/>
>         <bean class="org.apache.directory.server.core.schema.bootstrap.NisSchema"/>
>         <bean class="org.apache.directory.server.core.schema.bootstrap.SystemSchema"/>
>         <bean class="org.apache.directory.server.core.schema.bootstrap.ApachednsSchema"/>
>       </set>
>     </property>
>     <property name="schemaLoaders">
>         <list>
>             <bean class="org.apache.directory.server.core.schema.FileSystemSchemaLoader">
>                 <constructor-arg><value>./</value></constructor-arg>
>                 <!--<constructor-arg><value>.*_openldap.schema</value></constructor-arg>-->
>                 <constructor-arg>
>                     <list>
>                         <value>my1_openldap.schema</value>
>                         <value>my2_openldap.schema</value>
>                     </list>
>                 </constructor-arg>
>             </bean>
>         </list>
>     </property>
> noting that the Maven2 style approach is of course still supported where desired. A list
is used so that multiple SchemaLoader implementations can be appended if required (which I
do). 
> I have also included SchemaFromSearchConverter which can read a schema from another directory
via conventional query, which may come in useful for people using ApacheDS as a virtual directory
container of sorts. It is not required by the core patch and can be excluded if no generic
use is seen for it.
> A few issues are still outstanding:
>    1. Is the patch seen as worthwhile by the DEV list and/or are there any issues with
my implementation of it?
>    2. At it's core the patch uses the OpenLdapSchemaParser to read the .schema files,
which is currently only available in the Maven2 plugin artifact     
> <groupId>org.apache.directory.server</groupId>
> <artifactId>apacheds-core-plugin</artifactId>
>    
>     which is a bit clunky as it means people need to include this jar in their classpath
(or in the UberJar). Perhaps this parsing component should be separated from the rest of the
maven plugin to tidy this up (I don't know maven well enough to do this myself).
>    
>    3. If the feature and implementation are ok, what further steps should I take re preparing
the patch for inclusion?
> Thanks (by the way I was previously known as Norbert Reilly)

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