Is there a XML Schema validation library that supports the default attribute value?

Question

If I read the XML Schema specification for default attribute values correctly, the validation process is actually supposed to change the DOM to fill the default values.

Answer 1

Xerces2 (Java) provides default values, however, the feature needs to be turned on in the parser.

    DOMParser parser=new DOMParser();
    parser.setFeature("http://apache.org/xml/features/validation/schema", true);
    parser.setFeature("http://apache.org/xml/features/validation/schema/element-default", true);

The schema validation feature needs to be turned on.

Refer: Xerces Features