candlepin/candlepin — pull request #336 by wottop (2013-08-01 18:33:08+00:00)
Title: Bug 990113 - '500 Internal Server Error' importing manifest from stage

Was passing a value of empty string in the manifest for the field
Content.vendor. This got translated to null in the database column
and the field in non-null. Annotation makes the saved value empty
string in the database as well.