topic Custom behaviour onCreateNode policy in Alfresco Archive

Custom behaviour onCreateNode policy

pedrosaraiva — Mon, 08 Feb 2010 11:33:30 GMT

Hello,I'm trying to implement a listener to integrate alfresco with another system. The listener will be triggered when a file (or folder) is created, deleted, updated and versioned. I’ve created a behaviour and binded to the policies onContentUpdate, onCreateNode, onUpdateNode… etc, using java.When

Re: Custom behaviour onCreateNode policy

zaizi — Tue, 09 Feb 2010 09:53:45 GMT

How are you creating your new thread?

Take a look at the Aspect SDK example bundled with the Alfresco SDK. It provides an example of how to bind post-commit operations to policies.

Re: Custom behaviour onCreateNode policy

pedrosaraiva — Tue, 09 Feb 2010 18:11:12 GMT

Hello,

Thanks a lot, it's working now … with some hacks and problems ..

I'm binding the policies like this:

this.policyComponent.bindClassBehaviour( QName.createQName( NamespaceService.ALFRESCO_URI, "onCreateNode" ), "cm:content", this.onCreateNode );‍

If I change that to :

this.policyComponent.bindClassBehaviour( QName.createQName( NamespaceService.ALFRESCO_URI, "onCreateNode" ), ContentModel.TYPE_CONTENT, this.onCreateNode );‍

The policy isn't triggered.
On the SDK example you mentioned there's this code to prevent the refire of a policy:


this.policyComponent.bindClassBehaviour( ContentServicePolicies.ON_CONTENT_READ,  ASPECT_CONTENT_HITS, new JavaBehaviour(this, "onContentRead", notificationFrequency.TRANSACTION_COMMIT));
…
policyFilter.disableBehaviour(nodeRef, ASPECT_CONTENT_HITS);‍‍‍‍

Using ContentModel.TYPE_CONTENT on disableBehaviour method gives me an exception. So how can I create a QName for the "cm:content" to pass on disableBehaviour?

Another problem :x. If I bind the “onCreateVersion”, the versioning system stops working. Every time I try to access via web interface to a version of the document there's this error:

The node’s content is missing:
node: versionStore://version2Store/832c5cae-d7e8-4945-96db-5cbb3169b0b9
reader: null
Please contact your system administrator.

On the javadoc of the method there’s this warning:

WARNING: implementing behaviour for this policy effects the versioning behaviour of the type the behaviour is registered against.

How can I make this work right?

Kind regards,

Pedro Saraiva

Re: Custom behaviour onCreateNode policy

zaizi — Wed, 10 Feb 2010 11:28:28 GMT

Your code should read something like this;

this.policyComponent.bindClassBehaviour( QName.createQName( NamespaceService.ALFRESCO_URI, "onCreateNode" ), this, this.onCreateNode );‍

Assuming you are not updating the node or creating a new node, you should not have to worry about refiring the policy.

Why are you binding to create version?

Re: Custom behaviour onCreateNode policy

wesse — Thu, 18 Feb 2010 07:58:55 GMT

ContentServicePolicies.ON_CONTENT_READ will probably generate more events since it is also triggerd by the indexing service.

Re: Custom behaviour onCreateNode policy

mitpatoliya — Wed, 02 Feb 2011 11:42:38 GMT

Hi All,

I have deployed the Custom Aspect example(Version 3.2r) on my alfresco instance not changed any thing in given code just a single change done in the file
content-hits-context.xml.
Change done is as follow original thread pool executor entry is replaced with entry like this
<property name="threadExecuter">
<ref bean="threadPoolExecutor"/>
</property>
as it has solved my one problem where i was not able to start the alfresco instance,
but the problem which i am facing now is when i attach content hits aspect to any content and try to down load the content or try to read it it gives me error:


Invalid Value
17:13:31,296 User:admin ERROR [repo.transaction.AlfrescoTransactionSupport] After completion (committed) listener exception:
   listener: org.alfresco.sample.ContentHitsAspect$ContentHitsTransactionListener@94449c
java.lang.NullPointerException
        at org.alfresco.sample.ContentHitsAspect$ContentHitsTransactionListener.afterCommit(ContentHitsAspect.java:212)
        at org.alfresco.repo.transaction.AlfrescoTransactionSupport$TransactionSynchronizationImpl.afterCompletion(AlfrescoTransactionSuppo
rt.java:814)
        at org.springframework.transaction.support.TransactionSynchronizationUtils.invokeAfterCompletion(TransactionSynchronizationUtils.ja
va:133)
        at org.springframework.transaction.support.AbstractPlatformTransactionManager.invokeAfterCompletion(AbstractPlatformTransactionMana
ger.java:904)
        at org.springframework.transaction.support.AbstractPlatformTransactionManager.triggerAfterCompletion(AbstractPlatformTransactionMan
ager.java:879)
        at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java
:707)
        at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:632)
        at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.ja
va:314)
        at org.alfresco.util.transaction.SpringAwareUserTransaction.commit(SpringAwareUserTransaction.java:467)
        at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:349)
        at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:253)
        at org.alfresco.web.app.servlet.DownloadContentServlet.doGet(DownloadContentServlet.java:119)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.alfresco.web.scripts.servlet.StaticAssetCacheFilter.doFilter(StaticAssetCacheFilter.java:76)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.alfresco.repo.web.filter.beans.NullFilter.doFilter(NullFilter.java:74)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.alfresco.repo.management.subsystems.ChainingSubsystemProxyFactory$1.invoke(ChainingSubsystemProxyFactory.java:122)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
        at $Proxy167.doFilter(Unknown Source)
        at org.alfresco.repo.web.filter.beans.BeanProxyFilter.doFilter(BeanProxyFilter.java:88)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
        at java.lang.Thread.run(Thread.java:619)
‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

It must be problem with Out of box SDK example.
Please suggest me the solution.

Regards,
Mit