WEbScript FileUpload and tags Creation

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zafarale

Hi I have a simple script which recieves file and pushes it into repo. one of the requirement is request can contain tags t associate with newly uploaded file, while preserving tags case.

folowing is the code i am using to create tags

/**
 * @param tags array( with tag names in it)
 */
function getTag(tags){
   var store = "workspace://SpacesStore/";

   for(var t=0; t< tags.length; t++) {
      var tag = taggingService.getTag(store, tags[t]);
       var tagExists = (tag != null);   
      if (!tagExists){
                 //It creates tag with lower case
       tag = taggingService.createTag(store, tags[t]);
                 //For some reason after createTag tag was null in some cases
            var tagNode = search.findNode("workspace://SpacesStore/"+tag.id);
                 //Give it a name originally intended
            tagNode.properties.name=tags[t];
            tagNode.save();      
      }
      tags[t] = tag;
   }
   return tags;
}
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when i try to use returned array of tag nodes elsewhere as;

tags = getTag(tags);
for(var t=0; t<tags.length; t++) {
                    //This line works fine
   logger.info(tags[t].name);
                    //This line again sometimes throws NullPointer even though tags array has all  nodes
   upload.addTag(tags[t].name); 
}
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upload is a node created but not called save() upon.


With webscript debugger attaching break point at logger.info and letting it go every time it stops seems to fix the issue.

Any ideas, it's urgent

kaynezhang

I guess it might cause by following reasons:
suppose you begin with adding a capital letters tag "Information" which was not present yet .
1.you get the tag using

var tag = taggingService.getTag(store, tags[t]);‍

which will not lower the case,so nothing will return.
2.you creat the tag "Information" using

 tag = taggingService.createTag(store, tags[t]);‍

,but in createTag implementation ,"Information" will be lowered case to "information".
3. you try to give it a name originally intended,which will set its name to "Information" again.
4.then you will call

upload.addTag(tags[t].name);‍

which is

 ScriptNode.addTag()‍

method ,in ScriptNode.addTag alfresco will lower the case of the tag(to "information" again),but in repository there is no node named "information",so you get a null pointer.

So it is a bad idea for you to make tag sensitive .