topic Re: customModel.xml - how to read custom aspect data at run-time in Alfresco Archive

customModel.xml - how to read custom aspect data at run-time

friedman30 — Tue, 22 May 2007 10:34:31 GMT

I have created a custom aspect (Thumbnail aspect) which gets a path as a parameter. <aspect name="custom:ThumbnailAspect"> <title>Thumbnail Aspect</title> <associations> <association name="custom:Thumbnail"> <title>Thumbnai

Re: customModel.xml - how to read custom aspect data at run-time

friedman30 — Thu, 24 May 2007 16:37:50 GMT

? ? ?
anyone?
? ? ?

Re: customModel.xml - how to read custom aspect data at run-time

gavinc — Fri, 25 May 2007 07:21:51 GMT

You have defined the thumbnail as an association. This means in order to return the value you need to call the getTargetAssocs() method on the NodeService.

Re: customModel.xml - how to read custom aspect data at run-time

friedman30 — Sun, 27 May 2007 10:02:16 GMT

first of all, thanks for your reply!

I've tried using the method u advised me to, but all i get is an empty array or an array with nulls…

I'm probably doing something wrong here:

nodeService.getTargetAssocs(nodeRef, QName.createQName(NamespaceService.CONTENT_MODEL_1_0_URI, "Thumbnail"));

( Thumbnail comes from here: <association name="custom:Thumbnail"> )

what should i put in getTargetAssocs second parameter? (qnamePattern)
i believe this is the loose link in my code…

By the way, all the changes i do are in the source code of alfresco (rev. 569 from svn)

Re: customModel.xml - how to read custom aspect data at run-time

friedman30 — Sun, 27 May 2007 15:20:50 GMT

OK, i've found what i was doing wrong… i sent the wrong name-space as a parameter. (since i am using customModel.xml to create my aspect, the uri i should use is "custom.model".

now this part works, and now i have problems at the next level:

since i want to show a thumbnail, in the jsp file i do this:

<a:actionLink id="col11_thumb-act1" value="#{r.name}" href="#{r.url}" target="new" image="#{r.thumbnail}" showLink="false" styleClass="inlineAction"/>

the next step was to add this code to setupCommonBindingProperties method (in BrowseBean.java) :

node.addPropertyResolver("thumbnail", this.resolverThumbnail);

and then to create a nested class (resolverThumbnail) inside BrowseBean.java (so that the var "r" would know what is "thumbnail"):

public NodePropertyResolver resolverThumbnail = new NodePropertyResolver() {
      public Object get(Node node) {
         NodeRef nodeRef = node.getNodeRef();
         List<AssociationRef> ref = new ArrayList<AssociationRef>();
         QNamePattern qualifiefName = QName.createQName(NamespaceService.CUSTOM_MODEL, "Thumbnail");
         if(nodeService != null)
         {
            ref = nodeService.getTargetAssocs(nodeRef,qualifiefName);
         }

         if ( ref!= null){
            if ( ref.size() > 0)
            {
               return ref.get(0).getTargetRef();
            }
         }
return null;

so now, #{r.thumbnail} gets the returned value from ref.get(0).getTargetRef();

the returned value i get is this:

workspace://SpacesStore/06395321-082e-11dc-beed-3fbcc9294cb8

but i still get an error, since the image attribute doesn't know how to handle this…

how to i deliver the url that i got from the user (as thumbnail aspect) to the "image" attribute? ? ?

:?:

thanks,

Dror

Re: customModel.xml - how to read custom aspect data at run-time

friedman30 — Sun, 27 May 2007 15:54:12 GMT

I guess i have the answer to the last part of this puzzle…

you have to return this to the "image" attribute:

return DownloadContentServlet.generateBrowserURL(ref.get(0).getTargetRef(), ref.get(0).getTargetRef().getId());

this generates the needed URL.

i would love to get more suggestions regarding this issue

Thanks,

Dror