Google App Engine Low Level API Query Sample

gaeds-lowlevel-query-sample.scala

import scala.collection.JavaConverters._
import com.google.appengine.api.datastore.Query
import com.google.appengine.api.datastore.Query.FilterOperator._
import com.google.appengine.api.datastore.Query.SortDirection._

val q = new Query(kind)
q.addFilter("age", GREATER_THAN_OR_EQUAL, 10)
q.addFilter("age", LESS_THAN_OR_EQUAL, 20)
q.addSort("age", ASCENDING)
q.addSort("name", ASCENDING)
val ps = for (e <- ds.prepare(q).asIterator.asScala) yield {
  Person(e.getProperty("name").asInstanceOf[String], e.getProperty("age").asInstanceOf[Long])
}