Commenting code, adding docs.

docs/querying.md

@@ -33,6 +33,8 @@ If you have more than one database to connect, use monger.core/connect and monge
           nonlocal-mongodb-connection (monger.core/connect :host "my-mongo-server.local")
           my-second-database (monger.core/get-db "my-second-database-name") ])
 
+TODO: How to authenticate
+
 So, now you have 2 connections and 2 databases, you can manipulate them independently.
 
 # Working with collections
@@ -57,6 +59,8 @@ If you know how to use MongoDB console, you already know how to write Monger que
 ## Querying collections
 
 ### find
+
+
 ### find-one
 ### find-by-id
 ### count
@@ -66,6 +70,16 @@ If you know how to use MongoDB console, you already know how to write Monger que
 
 ## Inserting records
 
+## Write Concerns
+
+Every write-related operation supports passing WriteConcern. WriteConcern specifies how much safety you want with for a given operation.
+
+You can find detailed, elaborate representation for WriteConcerns
+  * here http://www.littlelostmanuals.com/2011/11/overview-of-basic-mongodb-java-write.html
+  * and here http://api.mongodb.org/java/current/com/mongodb/WriteConcern.html
+
+
+
 ### Single
 ### Batch
 
@@ -75,6 +89,9 @@ If you know how to use MongoDB console, you already know how to write Monger que
 
 ### Atomic modifiers
 
+Atomic modifiers are simple operations on a single document that are commited to database atomically.
+
+
 ## save
 
 # Indexing

src/monger/collection.clj

@@ -315,6 +315,12 @@
 
 
 (defn exists?
+  "Checks weather collection with certain name exists.
+
+   EXAMPLE:
+
+      (monger.collection/exists? \"coll\")
+  "
   [^String collection]
   (.collectionExists monger.core/*mongodb-database* collection))
 
@@ -323,11 +329,23 @@
   (.createCollection monger.core/*mongodb-database* collection (to-db-object options)))
 
 (defn drop
+  "Deletes collection from database.
+
+   EXAMPLE:
+
+      (monger.collection/drop \"collection-to-drop\")
+  "
   [^String collection]
   (let [^DBCollection coll (.getCollection monger.core/*mongodb-database* collection)]
     (.drop coll)))
 
 (defn rename
+  "Renames collection.
+
+   EXAMPLE:
+
+      (monger.collection/rename \"old_name\" \"new_name\")
+   "
   ([^String from, ^String to]
      (let [^DBCollection coll (.getCollection monger.core/*mongodb-database* from)]
        (.rename coll to)))