* Copyright 2007 Daniel Spiewak
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
Marks a method such that the corresponding database field will have a UNIQUE constraint. This constraint is implemented within the underlying database and is not enforced by ActiveObjects itself.
This annotation is only relevant to migrations. It has no effect upon "runtime" entity usage.