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

friedman30

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>Thumbnail</title>
               <source> 
                <many>true</many> 
             </source> 
               <target>
                  <class>cm:content</class>
                  <mandatory>false</mandatory>
                        <many>false</many> 
                   </target>
               </association>
          </associations>
    </aspect>
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the whole thing works fine, and i can add an aspect to spaces & contents.
the problem: I want to read the parameter that the user added (the thumbnail path) at runtime.
(I'm trying to show the thumb icon instead of the built-in icons)

At BrowseBean.java class - "getContent" method returns a List of "Node". i can see that the aspect I've added is a part of the "aspects" collection that "Node" contains, but still…. i can't find a way to get that thumbnailAspect's value…. :evil:

any ideas ? ? ? :idea:

:?:

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Comments

friedman30

? ? ?
anyone?
? ? ?

gavinc

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.

friedman30

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)

friedman30

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

friedman30

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