Lariat

A semi-experimental extension to morphia that transparently archives old versions of your entities and allows for rollbacks to previous states. e.g., the class below will be archived in to the collection records_archive and will keep only the last 3 versions. More docs and examples are (probably) on the way but for now see LariatTest.java.

    @Entity("records")
    public class Record {
        public static final int MAX_ARCHIVE_COUNT = 3;

        @Id
        private ObjectId id;
        private String name;
        private String content;
        @Version
        @Archived(count = Record.MAX_ARCHIVE_COUNT)
        private long version;
    }