topic Re: Problem using services in Alfresco Archive

Problem using services

dgildeh — Mon, 03 Aug 2009 15:58:33 GMT

Hi,I'm developing my own Service class which uses most of the other Alfresco services such as nodeService, tenantAdminService and personService. Everything seems to be working fine except for when I use the tenantAdminService and personService.For example - when I use the tenantAdminService to creat

Re: Problem using services

dgildeh — Mon, 03 Aug 2009 16:02:42 GMT

Just in case - here is the class bean in my Spring context file for this class:



 <bean id="MyServiceImpl" class="com.test.alfresco.services.MyServiceImpl" init-method="init">
       <property name="serviceRegistry" ref="ServiceRegistry"/>
       <property name="nodeService" ref="NodeService"/>
       <property name="searchService" ref="SearchService"/>
       <property name="namespaceService" ref="NamespaceService"/>
       <property name="permissionService" ref="PermissionService" />   
       <property name="personService" ref="personService"/>
       <property name="authorityService" ref="authorityService"/>
       <property name="authenticationService" ref="authenticationService"/>
       <property name="mutableAuthenticationDao" ref="authenticationDao"/>
       <property name="dictionaryService" ref="DictionaryService"/>
       <property name="tenantAdminService" ref="tenantAdminService"/>
       <property name="transactionHelper" ref="retryingTransactionHelper"/>
       <property name="mailService" ref="mailService"/>
    </bean>

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Re: Problem using services

mrogers — Mon, 03 Aug 2009 17:08:25 GMT

How are you calling your service?

Re: Problem using services

dgildeh — Mon, 03 Aug 2009 18:21:24 GMT

I'm calling it from a webscript. I've created a root script object, which essentially wraps the service and makes it available to the JavaScript API.

So in my JS controller file:

myService.createUser(…… while logged in as admin.

I've actually managed to get the user creation to work now since this post. Basically I think this issue is to do with transactions. The code immediately after this was failing (I was using a custom template to send an email to the new user which had a bug in it) and when I fixed that all of a sudden the users were getting created.

Is my hunch about transactions right do you think? How come Alfresco doesn't throw any exceptions when this happens? Where can you look to see if a transaction has failed? And how can you tell where Alfresco deems the transaction to start and when it ends as I would assume the transaction completed after the user was created successfully and not rolled back when an error in unrelated code after was thrown.

I still haven't tried the tenantAdminService yet.

Thanks

Re: Problem using services

mrogers — Mon, 03 Aug 2009 18:39:24 GMT

In general, each web script executes as a single transaction so it either all succeeds or all fails. Your email error pulled over the entire transaction. It's easiest to consider that any error wihin a web script is fatal to the transaction. It is problematic to try to handle an error and carry on in the java script environment.

You may also need to consider injecting transaction definitions into your service definition file, some of your methods may make sense to be run in their own transaction(s) rather than being part of the enclosing transaction and some of them may be read-only.

Re: Problem using services

dgildeh — Tue, 04 Aug 2009 09:59:19 GMT

Thanks Mark, that makes a lot of sense and explains why the tenantAdminService creates everything successfully but then dissapears at the end. I'll be sure to keep this in mind as I continue to develop.

Regarding your solution about transaction definitions, do you have any examples for that? I haven't seen or used those before.

Thanks,

David