Hi, here's how to create a unique compound index with Morphia and Scala. The example is from my Gradle + Scala + MongoDb application Also, here's Part 1 of my tutorial on building a Scala + Gradle + Guice applications.
package me.m1key.audioliciousmigration.entities.mongodb import com.google.code.morphia.annotations.Id import com.google.code.morphia.annotations.Entity import org.bson.types.ObjectId import com.google.code.morphia.annotations.Indexes import com.google.code.morphia.annotations.Index @Entity @Indexes(Array(new Index(value = "name, albumName", unique = true))) class MongoDbSong(val name: String, val albumName: String) { @Id var id: ObjectId = _ override def equals(that: Any) = { that match { case that: MongoDbSong => that.name == this.name && that.albumName == this.albumName case _ => false } } override def hashCode(): Int = name.hashCode() }
Remember to run this code in your app:
datastore.ensureIndexes()
Also, my final note here is this: If you make any such changes to your MongoDb schema, you have to drop the collection from the Mongo client.
db.MongoDbSong.drop()
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