How can I programatically create a new version of an asset with new content? | Adobe Higher Education
Skip to main content
peter-g
peter-g
Level 2
October 5, 2020
Beantwortet

How can I programatically create a new version of an asset with new content?

  • October 5, 2020
  • 2 Antworten
  • 1953 Ansichten

I have 2 assets in the dam, lets call them A and B.

How can I programatically make a new version of A, and use the content of B as that new version?

 

AssetManager. createRevision makes a new version of A just fine, and I tried AssetManager.createAsset on the path of A using the stream I grabbed from asset B, but it doesnt go through.

 

A new version gets created but I'm having trouble adding B's content. It doesn't matter what happens to B as it will be deleted afterwards.

 

Thanks

Dieses Thema wurde für Antworten geschlossen.
Beste Antwort von Manjunath_K

Hi @peter-g 

 

Yes, as you mentioned we need to use assetManager.createRevision() to create initial version of asset before replacing content of Asset A by Asset B. please check below code which will create version & replace content as expected.

 

try (ResourceResolver resourceResolver = request.getResourceResolver()){
    AssetManager assetManager = resourceResolver.adaptTo(AssetManager.class);
    Resource resourceAssetA = resourceResolver.getResource("/content/dam/test/jane_doe.jpg");
    Resource resourceAssetB = resourceResolver.getResource("/content/dam/test/larry_spiller.jpg");

    if(resourceAssetA!= null && resourceAssetB!= null) {
        Asset assetA = resourceAssetA.adaptTo(Asset.class);
        Asset assetB = resourceAssetB.adaptTo(Asset.class);
        assetManager.createRevision(assetA, "message to create initial version of asset", assetA.getName());
        Rendition renditionAssetB = assetB.getOriginal();
        assetManager.createAsset(assetA.getPath(), renditionAssetB.getStream(), renditionAssetB.getMimeType(), false);
    }

    if(resourceResolver.hasChanges()){
        resourceResolver.commit();
    }
} catch (Exception e) {
    e.printStackTrace();
}

 

 

Before creating version & replacing asset content :

 

 

 

 

After creating version & replacing asset content :

 

 

 

After deleting original asset(Asset B) from which content is copied from , it will not affect to asset(Asset A) which has copied content.

 

 

 

-Manjunath

 

 

2 Antworten

Manjunath_K
Manjunath_KAntwort
Level 7
October 5, 2020

Hi @peter-g 

 

Yes, as you mentioned we need to use assetManager.createRevision() to create initial version of asset before replacing content of Asset A by Asset B. please check below code which will create version & replace content as expected.

 

try (ResourceResolver resourceResolver = request.getResourceResolver()){
    AssetManager assetManager = resourceResolver.adaptTo(AssetManager.class);
    Resource resourceAssetA = resourceResolver.getResource("/content/dam/test/jane_doe.jpg");
    Resource resourceAssetB = resourceResolver.getResource("/content/dam/test/larry_spiller.jpg");

    if(resourceAssetA!= null && resourceAssetB!= null) {
        Asset assetA = resourceAssetA.adaptTo(Asset.class);
        Asset assetB = resourceAssetB.adaptTo(Asset.class);
        assetManager.createRevision(assetA, "message to create initial version of asset", assetA.getName());
        Rendition renditionAssetB = assetB.getOriginal();
        assetManager.createAsset(assetA.getPath(), renditionAssetB.getStream(), renditionAssetB.getMimeType(), false);
    }

    if(resourceResolver.hasChanges()){
        resourceResolver.commit();
    }
} catch (Exception e) {
    e.printStackTrace();
}

 

 

Before creating version & replacing asset content :

 

 

 

 

After creating version & replacing asset content :

 

 

 

After deleting original asset(Asset B) from which content is copied from , it will not affect to asset(Asset A) which has copied content.

 

 

 

-Manjunath

 

 

    peter-g
    peter-gAutor
    Level 2
    October 5, 2020
    @manjunath_k I checked both those things and no issues. It seems after more investigation that the "original" rendition of asset A is correctly showing the new content, but not the thumbnails. Is there some reason why my thumbnails are not being generated despite me using am.createAsset the same way you did?
    vanegi
    Adobe Employee
    vanegiAdobe Employee
    Adobe Employee
    October 6, 2020

    Each time a page/asset is modified cq creates a version of the same. This modified resource modification time is set in jcr:lastModified property of the page/asset. Manipulation of this property can be done to save future date and activate page on that date though its not preferred way. You can store the future date as a property in the page/asset. Then you could write a workflow or a scheduled job which activates pages/assets with a future date.

      Allgemeine NutzungsbedingungenAccessibility statement

      Loading footer...