Add custom metadata with new file upload

[goranche89]

Hello,
I'm using PortCmis with AtomPub 1.1 in .Net Core and I'm trying to upload a file to Alfresco. I'm trying to set custom metadata., but I'm getting this error: Type classification is unknown!
Here is my code:

parameters[SessionParameter.User] = "myuser";
parameters[SessionParameter.Password] = "mypassword";
parameters[SessionParameter.AtomPubUrl] = "http://my-address-where-is-alfresco/alfresco/api/-default-/public/cmis/versions/1.1/atom";
parameters[SessionParameter.BindingType] = BindingType.AtomPub;
parameters[SessionParameter.PreemptivAuthentication] = "True";

IDictionary<string, object> properties = new Dictionary<string, object>();
properties[PropertyIds.Name] = fileName;

IList<string> secondaryTypes = new List<string>();
secondaryTypes.Add("custom:classification");

properties[PropertyIds.SecondaryObjectTypeIds] = secondaryTypes;
properties["classification"] = "test classification";

After this I'm creating contentStream in a proper way and using it to create document.

var newDoc = folder.CreateDocument(properties, contentStream, VersioningState.None);

Does anyone has same error "Type classification is unknown!" ???

[angelborroy · Accepted solution]

When adding an aspect (secondaryType), you need to add the prefix "P:" to your aspect name.

secondaryTypes.Add("P:custom:classification");

You need also to be sure that the model definition has been deployed in Alfresco Repository.

[goranche89]

Thank you! Do you know if I can define and deploy model from C# code or that can be done only in Alfresco repository by Admin?

[kaynezhang · Accepted solution]

Alfresco model is just an xml ,so you can create the xml model file in c# and upload the xml file into Company Home/Data Dictionary/Models using cmis api.

[goranche89]

Hi kaynezhang,
Is there any tutorial how to do it? I've created some xml model file, but I'm not sure where to upload it either with C# or with drag and drop.

[EddieMay]

Hi @goranche89,

There are several tutorials for creating models in Alfresco. A very recent one by @Jendert , Creating a simple Contract Management Solution, is a very good introduction.   There are also Jeff Pott's Alfresco Developer Tutorials.

With regard to using the Alfresco ReST API, there's Gavin Cornwell's blog series. & also @Jendert API tutorial (still a work in progress).

HTH

[goranche89]

Hi,
I've uploaded an xml to Repository/Models. I like that approach to upload xml and than use it as a custom model. But I don't know is that enough or I must do something else? I see that in Admin Tools there is no my custom model, and that other approach is to simply create it with wizard., but I don't want that.
So to recapitulate, I've uploaded my xml model to Models and I can see that document as document in xml format. What is next step to be able to use that custom model for uploading files with aspects defined in that model?

[kaynezhang · Accepted solution]

Yes ,upload your xml to Repository/Models. and you also need to set cmisbjectTypeId to D:cm:dictionaryModel,and cm:modelActive property to true. Then you can use your types and aspects defined in your model.

[goranche89]

Thank you all! It works!

[ajkr195]

This is the solution that worked for me. I also had the same question and issue - Using REST, to upload file alongwith metadata here:

https://stackoverflow.com/questions/64176613/alfresco-how-to-add-set-content-of-the-file-while-doing...

I was trying to get it done using Spring RestTemplate but couldne make it. So I reached Alfresco support. And those guyz are awesome. They gave me the solution that worked flawlessly.

Here is the solution:

private static void postFileAndMetadataToAlfresco() throws IOException {

        CloseableHttpClient httpClient = HttpClients.createDefault();
        HttpPost httpPost = new HttpPost(POST_URL);
        UsernamePasswordCredentials creds = new UsernamePasswordCredentials ("admin","adminpswd");
        httpPost.addHeader (new BasicScheme().authenticate(creds,httpPost, null));

        File payload = new File ("/path/to/my/file.pdf");

        MultipartEntityBuilder builder = MultipartEntityBuilder.create(); // Entity builder

        builder.addPart("filedata", new FileBody(payload)); // this is where I was struggling
        builder.addTextBody ("name", "thenamegoeshere");
        builder.addTextBody ("foo", "foo");
        builder.addTextBody ("bar", "bar");
        builder.addTextBody ("description", "descriptiongoeshere");

        builder.addTextBody ("overwrite", "true");

        HttpEntity entity = builder.build();

        httpPost.setHeader("Accept","application/json");
        httpPost.setEntity(entity);

        CloseableHttpResponse response = client.execute(httpPost); // Post the request and get response

        System.out.println(response.toString()); // Response print to console

        client.close();  // close the client
}

 Hoping it might help someone like me.