In method transformXMLDocument, if no style sheet registered was found for the input document, the document will be send back, rather than use util.DebugMessge to print.
Only delete some incorrect comment.
When user request a data package, the old version documents would be exported. Only export the request one.
During the export function. Every document will be check if the user has the permission to read or not.
The feature of check permission before Metacat handle a "read" action. If user doesn't have permission, its request will be rejected.After creating a DocumentImpl object. A method named hasReadPermission in that class will be called to make sure the user has permission to read it.
A method named hasReadPermission was added. The method will check if a user has permission toread a xml document.
A new method named hasPermissionToExportPackage was added. So when MetaCat handle export action, it will check if user has permission to read the data package. If it has, MetaCat will export a zip output stream to it. Otherwise, MetaCat will be through a exception.
Code to handle "read" permission was changed in hasPermission method. The old code used old way to look up the public_access field in xml_documents table.
A new action named export was add to it. This action will export a zip output stream for a data package. In the zip output stream, meta data documents, data files and a html summary file are include. The stucture will looks like:package----/metadata/metadata docments...
Two metacat util methods were add. One is getDocIdFromString and the other is getVersionFromString. They output a docid and revision if a string like str1.str2.str3. were passed to them.
A method named transformXmlDocument were overload. It transform an XML document to StringWriter using the stylesheet reference from the db.
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