Add database wrapper with get and create collection

src/client.rs

@@ -3,8 +3,9 @@ use std::ffi::CString;
 
 use mongo_c_driver_wrapper::bindings;
 
+use super::collection::{Collection,CreatedBy};
+use super::database::Database;
 use super::uri::Uri;
-use super::collection::Collection;
 
 // TODO: We're using a sort of poor man's Arc here
 // with this root bool, there must be a better way.
@@ -91,18 +92,28 @@ pub struct Client<'a> {
 impl<'a> Client<'a> {
     pub fn get_collection<S: Into<Vec<u8>>>(&'a self, db: S, collection: S) -> Collection<'a> {
         assert!(!self.inner.is_null());
-        let mut coll;
-        unsafe {
+        let coll = unsafe {
             let db_cstring         = CString::new(db).unwrap();
             let collection_cstring = CString::new(collection).unwrap();
-
-            coll = bindings::mongoc_client_get_collection(
+            bindings::mongoc_client_get_collection(
                 self.inner,
                 db_cstring.as_ptr(),
                 collection_cstring.as_ptr()
-            );
-        }
-        Collection::new(self, coll)
+            )
+        };
+        Collection::new(CreatedBy::Client(self), coll)
+    }
+
+    pub fn get_database<S: Into<Vec<u8>>>(&'a self, db: S) -> Database<'a> {
+        assert!(!self.inner.is_null());
+        let coll = unsafe {
+            let db_cstring = CString::new(db).unwrap();
+            bindings::mongoc_client_get_database(
+                self.inner,
+                db_cstring.as_ptr()
+            )
+        };
+        Database::new(self, coll)
     }
 }
 
@@ -128,13 +139,15 @@ mod tests {
         let uri = Uri::new("mongodb://localhost:27017/");
         let pool = ClientPool::new(uri);
 
-        // Pop a client and insert a couple of times
-        for _ in 0..10 {
-            let client = pool.pop();
-            pool.pop();
-            let collection = client.get_collection("rust_test", "items");
-            assert_eq!("items", collection.get_name().to_mut());
-        }
+        // Pop a client and get a database and collection
+        let client = pool.pop();
+        pool.pop();
+
+        let database = client.get_database("rust_test");
+        assert_eq!("rust_test", database.get_name().to_mut());
+
+        let collection = client.get_collection("rust_test", "items");
+        assert_eq!("items", collection.get_name().to_mut());
     }
 
     #[test]

src/collection.rs

@@ -12,12 +12,14 @@ use super::bsonc::Bsonc;
 use super::client::Client;
 use super::cursor;
 use super::cursor::Cursor;
+use super::database::Database;
 use super::flags::{Flags,FlagsValue,InsertFlag,QueryFlag,RemoveFlag};
 use super::write_concern::WriteConcern;
 use super::read_prefs::ReadPrefs;
 
 pub enum CreatedBy<'a> {
-    Client(&'a Client<'a>)
+    Client(&'a Client<'a>),
+    Database(&'a Database<'a>)
 }
 
 pub struct Collection<'a> {
@@ -27,12 +29,12 @@ pub struct Collection<'a> {
 
 impl<'a> Collection<'a> {
     pub fn new(
-        client: &'a Client<'a>,
-        inner: *mut bindings::mongoc_collection_t
+        created_by: CreatedBy<'a>,
+        inner:      *mut bindings::mongoc_collection_t
     ) -> Collection<'a> {
         assert!(!inner.is_null());
         Collection {
-            _created_by: CreatedBy::Client(client),
+            _created_by: created_by,
             inner:       inner
         }
     }

src/database.rs

@@ -0,0 +1,123 @@
+use std::ffi::{CString,CStr};
+use std::borrow::Cow;
+use std::ptr;
+
+use mongo_c_driver_wrapper::bindings;
+use bson::Document;
+
+use super::Result;
+use super::bsonc::Bsonc;
+use super::client::Client;
+use super::collection::{Collection,CreatedBy};
+use error::BsoncError;
+
+pub struct Database<'a> {
+    _client: &'a Client<'a>,
+    inner:   *mut bindings::mongoc_database_t
+}
+
+impl<'a> Database<'a> {
+    pub fn new(
+        client: &'a Client<'a>,
+        inner: *mut bindings::mongoc_database_t
+    ) -> Database<'a> {
+        assert!(!inner.is_null());
+        Database {
+            _client: client,
+            inner:   inner
+        }
+    }
+
+    pub fn create_collection<S: Into<Vec<u8>>>(
+        &self,
+        name:    S,
+        options: Option<&Document>
+    ) -> Result<Collection> {
+        assert!(!self.inner.is_null());
+
+        let mut error = BsoncError::empty();
+        let name_cstring = CString::new(name).unwrap();
+        let coll = unsafe {
+            bindings::mongoc_database_create_collection(
+                self.inner,
+                name_cstring.as_ptr(),
+                match options {
+                    Some(o) => try!(Bsonc::from_document(o)).inner(),
+                    None    => ptr::null()
+                },
+                error.mut_inner()
+            )
+        };
+
+        if error.is_empty() {
+            Ok(Collection::new(CreatedBy::Database(self), coll))
+        } else {
+            Err(error.into())
+        }
+    }
+
+    pub fn get_collection<S: Into<Vec<u8>>>(&self, collection: S) -> Collection {
+        assert!(!self.inner.is_null());
+        let coll = unsafe {
+            let collection_cstring = CString::new(collection).unwrap();
+            bindings::mongoc_database_get_collection(
+                self.inner,
+                collection_cstring.as_ptr()
+            )
+        };
+        Collection::new(CreatedBy::Database(self), coll)
+    }
+
+    pub fn get_name(&self) -> Cow<str> {
+        let cstr = unsafe {
+            CStr::from_ptr(bindings::mongoc_database_get_name(self.inner))
+        };
+        String::from_utf8_lossy(cstr.to_bytes())
+    }
+}
+
+impl<'a> Drop for Database<'a> {
+    fn drop(&mut self) {
+        assert!(!self.inner.is_null());
+        unsafe {
+            bindings::mongoc_database_destroy(self.inner);
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use bson;
+    use super::super::uri::Uri;
+    use super::super::client::ClientPool;
+    use super::super::flags::{Flags};
+
+    #[test]
+    fn test_get_collection_and_name() {
+        let uri      = Uri::new("mongodb://localhost:27017/");
+        let pool     = ClientPool::new(uri);
+        let client   = pool.pop();
+        let database = client.get_database("rust_test");
+
+        assert_eq!("rust_test", database.get_name().to_mut());
+
+        let collection = database.get_collection("items");
+        assert_eq!("items", collection.get_name().to_mut());
+    }
+
+    #[test]
+    fn test_create_collection() {
+        let uri      = Uri::new("mongodb://localhost:27017/");
+        let pool     = ClientPool::new(uri);
+        let client   = pool.pop();
+        let database = client.get_database("rust_test");
+        database.get_collection("created_collection").drop().unwrap_or(());
+
+        let collection = database.create_collection(
+            "created_collection",
+            None
+        ).unwrap();
+
+        assert_eq!("created_collection", collection.get_name().to_mut());
+    }
+}

src/lib.rs

@@ -12,6 +12,7 @@ pub mod bsonc;
 pub mod client;
 pub mod collection;
 pub mod cursor;
+pub mod database;
 pub mod error;
 pub mod flags;
 pub mod read_prefs;