diff --git a/libimagstore/src/lib.rs b/libimagstore/src/lib.rs
index fadd3bcf..12c0e09d 100644
--- a/libimagstore/src/lib.rs
+++ b/libimagstore/src/lib.rs
@@ -5,4 +5,5 @@ pub mod content;
 pub mod entry;
 pub mod error;
 pub mod header;
+pub mod store;
 
diff --git a/libimagstore/src/store.rs b/libimagstore/src/store.rs
index 4f3af960..dc7baf1d 100644
--- a/libimagstore/src/store.rs
+++ b/libimagstore/src/store.rs
@@ -4,56 +4,21 @@ use std::ops::Drop;
 use std::path::PathBuf;
 use std::result::Result as RResult;
 use std::sync::Arc;
-use std::sync::RWLock;
+use std::sync::RwLock;
 
 pub use entry::Entry;
 pub use error::StoreError;
 
 pub type Result<T> = RResult<T, StoreError>;
 
-pub struct Store {
-    location: PathBuf,
+pub trait Store {
 
-    /**
-     * Internal Path->File cache map
-     *
-     * Caches the files, so they remain flock()ed
-     *
-     * Could be optimized for a threadsafe HashMap
-     */
-    cache: Arc<RWLock<HashMap<PathBuf, File>>>,
-}
+    fn location(&self) -> &PathBuf;
 
-impl Store {
-
-    pub fn create(entry: Entry) -> Result<()> {
-        unimplemented!()
-    }
-
-    pub fn read(path: PathBuf) -> Result<Arc<RWLock<Entry>>> {
-        unimplemented!()
-    }
-
-    pub fn update(entry: Arc<RWLock<Entry>>) -> Result<()> {
-        unimplemented!()
-    }
-
-    pub fn delete(path: PathBuf) -> Result<()> {
-        unimplemented!()
-    }
-
-}
-
-impl Drop for Store {
-
-    /**
-     * Unlock all files on drop
-     *
-     * TODO: Error message when file cannot be unlocked?
-     */
-    fn drop(&mut self) {
-        self.cache.iter().map(|f| f.unlock());
-    }
+    fn create(&self, entry: Entry) -> Result<()>;
+    fn read(&self, path: PathBuf) -> Result<Arc<RwLock<Entry>>>;
+    fn update(&self, entry: Arc<RwLock<Entry>>) -> Result<()>;
+    fn delete(&self, path: PathBuf) -> Result<()>;
 
 }