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/*
* Copyright 2012 Eligotech BV.
*
* 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
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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.
*/
package org.eligosource.eventsourced.example.service
import scala.concurrent.stm.Ref
import akka.actor.Actor
import org.eligosource.eventsourced.core._
import org.eligosource.eventsourced.example.domain._
class StatisticsService(statisticsRef: Ref[Map[String, Int]]) {
def statistics = statisticsRef.single.get
}
class StatisticsProcessor(statisticsRef: Ref[Map[String, Int]]) extends Actor {
def receive = {
case InvoiceItemAdded(id, _) => statisticsRef.single.transform { statistics =>
statistics.get(id) match {
case Some(count) => statistics + (id -> (count + 1))
case None => statistics + (id -> 1)
}
}
}
}