On Thu, Oct 18, 2012 at 09:37:51AM +0200, Joachim Bingel wrote: > as mentioned in previous posts of mine to this list, I have written a > class that implements the org.dspace.identifier.IdentifierProvider > interface for DSpace 3.0. Now that this is complete and I have > successfully set up 3.0-rc1, I'm looking to use my own class instead of > the default one. How do I do this?
If you're adding a new identifier type, just include its bean
definition. If you're providing a different implementation of Handles
then I think you'd need to comment out the stock Handle provider bean.
> I have set the class attribute to the package+name of my class for the
> respective bean in both
> [dspace-src]/dspace-api/target/classes/spring/spring-dspace-core-services.xml
> and
> [dspace-src]/dspace/target/dspace3.0-rc1-build/config/spring/api/identifier-service.xml
> (on this note, why does the same stuff get defined in these two
> different files?)
I created a new spring-dspace-addon-identifier-services.xml and placed
it in [dspace-src]/dspace-api/src/main/resources/spring, whence it
will be copied to [dspace-src]/target/classes/spring/ by Maven. That
gets it tucked into lib/dspace-api-VERSION.jar where Spring can find
it.
I defined bean properties for things that shouldn't really be in the
code, but which are unlikely to change -- they're just externalized
constants. Things that each installation would need to change are
fetched from [dspace]/config/** so that they're easy to adjust.
I should say that I'm still early in development and had not actually
installed and run this very incomplete code until just now. But the
XMLUI starts without complaint by Tomcat.
> Running 'ant update' and restarting Tomcat results in an error, the
> Tomcat log says:
> <<Cannot find class [de.mannheim.ids.pid.dspace.IDSIdentifierProvider]
> for bean with name 'org.dspace.identifier.IdentifierService' defined in
> file [/var/opt/ds
> pace/config/spring/api/identifier-service.xml]; nested exception is
> java.lang.ClassNotFoundException>>
>
> ... and a lot more, all related to the problem that the class cannot be
> found.
> The class is in the classpath and building worked, too. I presume I did
> something wrong with the Bean definition (I'm very very new to the
> Spring framework), right? The identifier-service.xml is attached. Also,
> what annotation do I have to set in the code of my class? Basically I
> adopted all the @Autowired/@Required/... annotation from
> IdentifierProviderImpl.java.
I found that declaring any autowiring on my provider caused circular
reference problems when Spring instantiates the provider. I left
@Required on the property setters and took out both @Autowired and
<bean autowire>. The IdentifierService gets itself autowired with a
list of providers and then injects itself into each as parent.
Another confession: I'm also quite new to Spring, so anything I do
with it that works probably owes a lot to luck.
Here's my bean declaration:
<?xml version="1.0" encoding="UTF-8"?>
<!--
The contents of this file are subject to the license and copyright
detailed in the LICENSE and NOTICE files at the root of the source
tree and available online at
http://www.dspace.org/license/
-->
<beans xmlns="http://www.springframework.org/schema/beans";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd";>
<bean id="org.dspace.identifier.DataCiteIdentifierProvider"
class="org.dspace.identifier.DataCiteIdentifierProvider"
scope='singleton'>
<property name="configurationService"
ref="org.dspace.services.ConfigurationService"/>
<property name='EZID_SCHEME' value='https'/>
<property name='EZID_HOST' value='n2t.net'/>
<property name='EZID_PATH' value='/ezid/shoulder/'/>
<property name='crosswalk'>
<map>
<entry key='datacite.creator' value='dc.creator.author'/>
<entry key='datacite.title' value='dc.title'/>
<entry key='datacite.publisher' value='dc.publisher'/>
<entry key='datacite.publicationyear'
value='dc.date.published'/>
</map>
</property>
</bean>
</beans>
> <?xml version="1.0" encoding="UTF-8"?>
> <!--
>
> Copyright (c) 2002-2010, DuraSpace. All rights reserved
> Licensed under the DuraSpace License.
>
> A copy of the DuraSpace License has been included in this
> distribution and is available at: http://www.dspace.org/license
>
> -->
> <beans xmlns="http://www.springframework.org/schema/beans";
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
> xsi:schemaLocation="http://www.springframework.org/schema/beans
> http://www.springframework.org/schema/beans/spring-beans-2.5.xsd";>
>
> <!-- Identifier Service Application Interface. Will be autowired with
> any Identifier Providers present in Spring context.
> -->
> <!-- bean id="org.dspace.identifier.IdentifierService"
> class="org.dspace.identifier.IdentifierServiceImpl"
> autowire="byType"
> scope="singleton"/ -->
>
> <bean id="org.dspace.identifier.IdentifierService"
> class="de.mannheim.ids.pid.dspace.IDSIdentifierProvider"
> autowire="byType"
> scope="singleton"/>
>
> <!-- provider for using the versioned handle identifier instead of the
> default one. -->
> <!--<bean id="org.dspace.identifier.HandleIdentifierProvider"
> class="org.dspace.identifier.VersionedHandleIdentifierProvider"-->
> <!--scope="singleton">-->
> <!--<property name="configurationService"
> ref="org.dspace.services.ConfigurationService"/>-->
> <!--</bean>-->
>
> </beans>
>
>
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