logos-storage/nim-datastore
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change to non-closure iterator

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Jaremy Creechley 2023-09-25 15:46:03 -07:00
parent 0a86a3466a
commit f8ba1e7684
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2 changed files with 6 additions and 4 deletions
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1
datastore/backend.nim
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@ -30,6 +30,7 @@ type
sort*: SortOrder # Sort order - not available in all backends
DbQueryHandle*[T] = object
query*: DbQuery
cancel*: bool
env*: T

9
datastore/sql/sqliteds.nim
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@ -116,7 +116,7 @@ proc close*(self: SQLiteBackend): ?!void =
proc query*(
self: SQLiteBackend,
query: DbQuery
): Result[DbQueryHandle, ref CatchableError] =
): Result[DbQueryHandle[RawStmtPtr], ref CatchableError] =
var
queryStr = if query.value:
@ -161,6 +161,8 @@ proc query*(
if not (v == SQLITE_OK):
return failure newException(DatastoreError, $sqlite3_errstr(v))
success DbQueryHandle[RawStmtPtr](query: query, env: s)
proc close*(handle: DbQueryHandle[RawStmtPtr]) =
echo "sqlite backend: query: finally close"
discard sqlite3_reset(handle.env)
@ -168,7 +170,7 @@ proc close*(handle: DbQueryHandle[RawStmtPtr]) =
handle.env.dispose()
return
iterator iter*(handle: var DbQueryHandle): ?!DbQueryResponse =
iterator iter*(handle: var DbQueryHandle[RawStmtPtr]): ?!DbQueryResponse =
let iter = iterator(): ?!DbQueryResponse {.closure.} =
while true:
@ -186,7 +188,7 @@ iterator iter*(handle: var DbQueryHandle): ?!DbQueryResponse =
key = KeyId.new(sqlite3_column_text_not_null(handle.env, QueryStmtIdCol))
blob: ?pointer =
if query.value: sqlite3_column_blob(handle.env, QueryStmtDataCol).some
if handle.query.value: sqlite3_column_blob(handle.env, QueryStmtDataCol).some
else: pointer.none
# detect out-of-memory error
@ -222,7 +224,6 @@ iterator iter*(handle: var DbQueryHandle): ?!DbQueryResponse =
handle.close()
return failure newException(DatastoreError, $sqlite3_errstr(v))
success (handle, iter)
proc contains*(self: SQLiteBackend, key: DbKey): bool =