Getting known property descriptors Leave feedback

This code snippet demonstrates how to extract information about known properties that can be encountered in a particular package.

1. Load a file to examine
2. Get a collection of PropertyDescriptor instances for any desired metadata package
3. Iterate through the extracted descriptors

advanced_usage.GettingKnownPropertyDescriptors

const metadata = new groupdocs.metadata.Metadata("input.doc");
    var root = metadata.getRootPackageGeneric();
    var descriptors = root.getDocumentProperties().getKnowPropertyDescriptors();
    for(var i=0;i<descriptors.getCount(); i++)
    {
      var descriptor = descriptors.get_Item(i);
      console.log(descriptor.getName());
      console.log(descriptor.getType().getRawValue());
      console.log(descriptor.getAccessLevel().getRawValue());

      var tags = descriptor.getTags();
      for(var j=0;j<tags.getCount(); j++)
        {
          console.log(tags.get_Item(j).getCategory().toString());
        }
    }

Note

Not all possible properties are presented in the getKnowPropertyDescriptors collection. The library provides information on the most frequently used properties only. If there is no descriptor for some property it is still accessible through the GroupDocs.Metadata search engine in read-only mode.

To learn more about library features and get familiar how to manage metadata and more, please refer to theadvanced usage section.

You may easily run the code above and see the feature in action in our GitHub examples:

• GroupDocs.Metadata for .NET examples

• GroupDocs.Metadata for Java examples

• GroupDocs.Metadata for Node.js via Java examples

Along with a full featured Java library we provide simple, but powerful free Apps.

You are welcome to view and edit metadata of PDF, DOC, DOCX, PPT, PPTX, XLS, XLSX, emails, images and more with our free online Free Online Document Metadata Viewing and Editing App.