Perfomance using orientdb graph api vs sql query - scala

Question

Actually i'm using this api for standards operations (Read, Remove, Find, Save)
http://orientdb.com/docs/last/Graph-Database-Tinkerpop.html
I noticed that the performance of this method for remove are really bad
object Odb {
val factory = new OrientGraphFactory("remote:localhost:2424/recommendation-system","root","root").setupPool(1,10)
def clearDb = {
val graph = factory.getNoTx
val vertices = graph.getVertices().asScala.map(v => v.remove())
}
}
object TagsOdb extends TagsDao {
override def count: Future[Long] = Future {
val graph = Odb.factory.getNoTx
val count = graph.countVertices("Tags")
count
}
override def update(newTag: Tag, oldTag: Tag): Future[Boolean] = Future { synchronized {
val graph = Odb.factory.getTx
val tagVertices = graph.getVertices("Tags.tag",oldTag.flatten).asScala
if(tagVertices.isEmpty) throw new Exception("Tag not found: "+oldTag.id)
tagVertices.head.setProperty("tag",newTag.flatten)
graph.commit()
true
}}
override def all: Future[List[Tag]] = Future {
val graph = Odb.factory.getNoTx
val tagVertices = graph.getVerticesOfClass("Tags").asScala
val tagList = tagVertices.map(v => Tag(v.getProperty("tag"),None)).toList
tagList
}
override def remove(e: Tag): Future[Boolean] = Future { synchronized {
val graph = Odb.factory.getTx
val tagVertices = graph.getVertices("Tags.tag",e.flatten).asScala
if(tagVertices.isEmpty) throw new Exception("Tag not found: "+e.flatten)
tagVertices.head.remove()
graph.commit()
true
}}
override def save(e: Tag, upsert: Boolean = false): Future[Boolean] = Future { synchronized {
val graph = Odb.factory.getTx
val v = graph.getVertices("Tags.tag",e.flatten).asScala
if(v.nonEmpty) {
if (upsert)
v.head.setProperty("tag", e.flatten)
else
throw new Exception("Element already in database")
} else {
val tagVertex = graph.addVertex("Tags", null)
tagVertex.setProperty("tag", e.flatten)
}
graph.commit()
true
}}
override def find(query: String): Future[List[Tag]] = Future {
val graph = Odb.factory.getNoTx
val res: OrientDynaElementIterable = graph.command(new OCommandSQL(query)).execute()
val ridTags: Iterable[Vertex] = res.asScala.asInstanceOf[Iterable[Vertex]]
def getTag(rid: AnyRef): Tag = {
val tagVertex = graph.getVertex(rid)
Tag(tagVertex.getProperty("tag"),None)
}
ridTags.map(r => getTag(r)).toList
}
}
is there any way to get better performance ?
I should use SQL queries?

Answer 1

Since you're connected via remote interface, foreach remove you have a RPC. Try to execute a DELETE VERTEX on the server.