implementing query

datastore.nim

@@ -1,6 +1,6 @@
 import ./datastore/datastore
 import ./datastore/fsds
-import ./datastore/sql
+# import ./datastore/sql
 import ./datastore/mountedds
 import ./datastore/tieredds
 

datastore/sql.nim

@@ -81,10 +81,10 @@ method query*(
 
     await lock.acquire()
 
-    let res = queries()
-    iter.result = res
-
+    without res =? queries(), err:
       iter.finished = true
+      return failure err
+
 
   iter.dispose = proc(): Future[?!void] {.async.} =
     discard sqlite3_reset(s)

datastore/sql/sqliteds.nim

@@ -140,10 +140,11 @@ proc query*(self: SQLiteBackend,
       self.db.env, queryStr).expect("should not fail")
 
     s = RawStmtPtr(queryStmt)
+    queryKey = $query.key & "*"
 
   var
     v = sqlite3_bind_text(
-      s, 1.cint, ($query.key & "*").cstring, -1.cint, SQLITE_TRANSIENT_GCSAFE)
+      s, 1.cint, queryKey.cstring, queryKey.len().cint, SQLITE_TRANSIENT_GCSAFE)
 
   if not (v == SQLITE_OK):
     return failure newException(DatastoreError, $sqlite3_errstr(v))

tests/datastore/sql/testsqliteds.nim

@@ -15,7 +15,7 @@ import ../dscommontests
 import ../querycommontests
 
 proc testBasic[K, V, B](
-  ds: SQLiteDatastore,
+  ds: SQLiteBackend,
   key: K,
   bytes: V,
   otherBytes: V,
@@ -67,7 +67,7 @@ proc testBasic[K, V, B](
 
 suite "Test Basic SQLiteDatastore":
   let
-    ds = SQLiteDatastore.new(Memory).tryGet()
+    ds = SQLiteBackend.new(Memory).tryGet()
     keyFull = Key.init("a:b/c/d:e").tryGet()
     key = keyFull.id()
     bytes = "some bytes".toBytes
@@ -85,7 +85,7 @@ suite "Test Basic SQLiteDatastore":
 
 suite "Test DataBuffer SQLiteDatastore":
   let
-    ds = SQLiteDatastore.new(Memory).tryGet()
+    ds = SQLiteBackend.new(Memory).tryGet()
     keyFull = Key.init("a:b/c/d:e").tryGet()
     key = KeyId.new keyFull.id()
     bytes = DataBuffer.new "some bytes"