Add into_inner and from_parts for the database

README.md

@@ -26,19 +26,19 @@ Features
 
 - Simple To Use, Fast, Secure
 - Threadsafe
-- Key/Value Storage
-- bincode or yaml storage
+- ron, bincode, or yaml storage
 
 Usage
 -----
 
 Usage is quite simple:
 
-- Create/open a database using `Database::open`
-    - You can specify the kind of Key you want using this Syntax:
-      `Database::<Key>::open`
-- `Insert`/`Retrieve` data from the Database
-- Don't forget to run `flush` periodically
+- Create/open a database using one of the Database constructors:
+    - Create a `FileDatabase` with `FileDatabase::from_path`
+    - Create a `MemoryDatabase` with `MemoryDatabase::memory`
+    - Create a `Database` with `Database::from_parts`
+- `Write`/`Read` data from the Database
+- Don't forget to run `sync` periodically
 
 ```rust
 # use std::collections::HashMap;
@@ -88,14 +88,6 @@ default-features = false
 features = ["ron_enc"]
 ```
 
-How it works
-------------
-
-Internally the Database holds a Hashmap behind a RwLock.
-This Hashmap is then written to/read from and safely casted to the requested
-type. This works thanks to encoding/decoding traits.
-
-
 
 [doc]:http://neikos.me/rustbreak/rustbreak/index.html
 [Daybreak]:https://propublica.github.io/daybreak/

src/lib.rs

@@ -164,6 +164,22 @@ impl<Data, Back, DeSer> Database<Data, Back, DeSer>
         backend.put_data(ser.as_bytes())?;
         Ok(())
     }
+
+    /// Create a database from its constituents
+    pub fn from_parts(data: Data, backend: Back, deser: DeSer) -> Database<Data, Back, DeSer> {
+        Database {
+            data: RwLock::new(data),
+            backend: Mutex::new(backend),
+            deser: deser,
+        }
+    }
+
+    /// Break a database into its individual parts
+    pub fn into_inner(self) -> error::Result<(Data, Back, DeSer)> {
+        Ok((self.data.into_inner().map_err(|_| error::RustbreakErrorKind::PoisonError)?,
+            self.backend.into_inner().map_err(|_| error::RustbreakErrorKind::PoisonError)?,
+            self.deser))
+    }
 }
 
 /// A database backed by a file