osinka / subset Goto Github PK

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https://github.com/OlegIlyenko/scaldi/tree/master/project

All we depend on are AsInt, AsLong and AsDouble extractors only.

http://www.mongodb.org/display/DOCS/Updating#Updating-Blocking

http://www.mongodb.org/display/DOCS/Updating#Updating-The%24positionaloperator

Spec

http://www.mongodb.org/display/DOCS/Advanced+Queries#AdvancedQueries-%24elemMatch
http://www.mongodb.org/display/DOCS/Dot+Notation+%28Reaching+into+Objects%29

Chaning Mutations by the ~ operator seems to be order-dependent in the following case:

Let m be a mutation with non-_id fields and T a compound type type representing a subset and t a value of type T. Then an insert of
m ~ "_id".fieldOfT
works while
"_id".fieldOfT ~ m
does not. Inserting the Latter omits the "_id" field thus yielding in a mongo-generated _id.

Thank you for providing Subset. It's awesome to work with it!

http://www.mongodb.org/display/DOCS/Dot+Notation+%28Reaching+into+Objects%29

Please, upload a compiled version for Scala 2.9.2 to the Maven repository.

• builder : Lens, ValueReader, ValueWriter, Packing traits
• query : Query
• update : Update
• tuple : Tuple* classes

val regEx = "...".r
val title = "Title".fieldOf[String]
myColl.find(title === regEx)

finds no document for any regEx. But I also don't succeed with

val title = "Title".fieldOf[String]
myColl.find(title === "...normal String...")

Peter

Subset is a subtype and fields may have same simple names.

It seems that tuple2Getter does not work correctly:

  val coll = db.getCollection("Tuple2Test")
  val anyDoc = new BasicDBObject 
  coll.remove(anyDoc)

  val tuple = (1,"a")
  val tupleField = "tuple".fieldOf[(Int,String)]
  coll.insert(tupleField(tuple))

  val tupleBack = coll.findOne(anyDoc)
  println(tupleBack) // ok
  tupleBack match {
    case tupleField(x) => println(x) // failure
  }   

with the failure: scala.MatchError: [ 1 , "a"](of class com.mongodb.BasicDBList).
To fix it you'll possibly need to add/replace pattern matching against BasicBSONList but I'm not sure how.

Thanks
Peter

I thought that fieldOf[List[T]] and fieldOf[Array[T]] are interchangeable and depends on what type I want to use in my code.

However, while listGetter accepts both Array[_] and BasicBSONList, arrayGetter only accepts Array[_] and Java driver returns BasicDBList (implementing BasicBSONList) for nested collections.

The sources jar doesn't reflect the package structure 'com.osinca.subset' so it cannot be used in any IDE directly.
Thank you for providing Subset. It's awesome to work with it!

With respect to the Java driver's DBCollection.aggregate(), it would be nice to have built-in support for $match, $projection, $group... just like Subset provides it for $gt, $size etc.

It'd be fine if you added a link to your home pointing to the root of subset in the Central Repository. It takes quite a long time to get there by searching on Central. Thanks

http://www.mongodb.org/display/DOCS/Updating#Updating-%24bit

E.g. {"comments.1.votes": ...}

Could you please provide example of mapping DBObject to case class ? I went through Extractors in your documentation but it shows mapping to individual fields only. Thanks!

Examples in gist and scaladoc must reference them

In Subset 1.0.2, please update the mongo-java-driver dependency to its 2.10.1 release (or higher). Thanks
Peter