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!per #18463 Make Persistence Query API explorable

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* make the standard queries "single method interfaces" that may be implemented
  by a query journal plugin
* remove hints (major problems with varargs anyway), the hints for standard
  queries  should be given in configuration instead, e.g. refresh-interval
This commit is contained in:
Patrik Nordwall 2015-09-14 11:08:22 +02:00
parent a45f31cecb
commit 5bd245fbc8
46 changed files with 1487 additions and 948 deletions
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28
akka-docs/rst/scala/code/docs/persistence/query/LeveldbPersistenceQueryDocSpec.scala
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@ -6,14 +6,11 @@ package docs.persistence.query
import akka.persistence.journal.{ EventAdapter, EventSeq }
import akka.testkit.AkkaSpec
import akka.persistence.query.PersistenceQuery
import akka.persistence.query.journal.leveldb.LeveldbReadJournal
import akka.persistence.query.journal.leveldb.scaladsl.LeveldbReadJournal
import akka.persistence.journal.Tagged
import akka.persistence.query.EventsByPersistenceId
import akka.stream.scaladsl.Source
import akka.persistence.query.EventEnvelope
import akka.stream.ActorMaterializer
import akka.persistence.query.AllPersistenceIds
import akka.persistence.query.EventsByTag
import scala.annotation.tailrec
object LeveldbPersistenceQueryDocSpec {
@ -46,20 +43,21 @@ class LeveldbPersistenceQueryDocSpec(config: String) extends AkkaSpec(config) {
"demonstrate how get ReadJournal" in {
//#get-read-journal
import akka.persistence.query.PersistenceQuery
import akka.persistence.query.journal.leveldb.LeveldbReadJournal
import akka.persistence.query.journal.leveldb.scaladsl.LeveldbReadJournal
val queries = PersistenceQuery(system).readJournalFor(LeveldbReadJournal.Identifier)
val queries = PersistenceQuery(system).readJournalFor[LeveldbReadJournal](
LeveldbReadJournal.Identifier)
//#get-read-journal
}
"demonstrate EventsByPersistenceId" in {
//#EventsByPersistenceId
import akka.persistence.query.EventsByPersistenceId
implicit val mat = ActorMaterializer()(system)
val queries = PersistenceQuery(system).readJournalFor(LeveldbReadJournal.Identifier)
val queries = PersistenceQuery(system).readJournalFor[LeveldbReadJournal](
LeveldbReadJournal.Identifier)
val src: Source[EventEnvelope, Unit] =
queries.query(EventsByPersistenceId("some-persistence-id", 0L, Long.MaxValue))
queries.eventsByPersistenceId("some-persistence-id", 0L, Long.MaxValue)
val events: Source[Any, Unit] = src.map(_.event)
//#EventsByPersistenceId
@ -67,22 +65,22 @@ class LeveldbPersistenceQueryDocSpec(config: String) extends AkkaSpec(config) {
"demonstrate AllPersistenceIds" in {
//#AllPersistenceIds
import akka.persistence.query.AllPersistenceIds
implicit val mat = ActorMaterializer()(system)
val queries = PersistenceQuery(system).readJournalFor(LeveldbReadJournal.Identifier)
val queries = PersistenceQuery(system).readJournalFor[LeveldbReadJournal](
LeveldbReadJournal.Identifier)
val src: Source[String, Unit] = queries.query(AllPersistenceIds)
val src: Source[String, Unit] = queries.allPersistenceIds()
//#AllPersistenceIds
}
"demonstrate EventsByTag" in {
//#EventsByTag
import akka.persistence.query.EventsByTag
implicit val mat = ActorMaterializer()(system)
val queries = PersistenceQuery(system).readJournalFor(LeveldbReadJournal.Identifier)
val queries = PersistenceQuery(system).readJournalFor[LeveldbReadJournal](
LeveldbReadJournal.Identifier)
val src: Source[EventEnvelope, Unit] =
queries.query(EventsByTag(tag = "green", offset = 0L))
queries.eventsByTag(tag = "green", offset = 0L)
//#EventsByTag
}