зеркало из https://github.com/mozilla/pjs.git
95 строки
3.4 KiB
C
95 строки
3.4 KiB
C
/* -*- Mode: C; indent-tabs-mode: nil; -*-
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public
|
|
* License Version 1.1 (the "License"); you may not use this file
|
|
* except in compliance with the License. You may obtain a copy of
|
|
* the License at http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS
|
|
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
|
|
* implied. See the License for the specific language governing
|
|
* rights and limitations under the License.
|
|
*
|
|
* The Original Code is the TripleDB database library.
|
|
*
|
|
* The Initial Developer of the Original Code is Geocast Network Systems.
|
|
* Portions created by Geocast are
|
|
* Copyright (C) 2000 Geocast Network Systems. All
|
|
* Rights Reserved.
|
|
*
|
|
* Contributor(s): Terry Weissman <terry@mozilla.org>
|
|
*/
|
|
|
|
#ifndef _TDBimpl_h_
|
|
#define _TDBimpl_h_ 1
|
|
|
|
|
|
typedef struct {
|
|
TDBStatus (*close)(TDB* database);
|
|
void* (*query)(TDB* database, TDBNodePtr triple[3],
|
|
TDBSortSpecification* sortspec);
|
|
TDBTriple* (*getresult)(void* cursor);
|
|
TDBStatus (*freecursor)(void* cursor);
|
|
TDBStatus (*remove)(TDB* database, TDBNodePtr triple[3]);
|
|
TDBStatus (*add)(TDB* database, TDBNodePtr triple[3], TDBUint64 owner);
|
|
TDBStatus (*addfalse)(TDB* database, TDBNodePtr triple[3],
|
|
TDBUint64 owner);
|
|
TDBStatus (*replace)(TDB* database, TDBNodePtr triple[3], TDBUint64 owner);
|
|
TDBStatus (*gettripleid)(TDB* db, TDBNodePtr triple[3], TDBInt64* id);
|
|
TDBTriple* (*findtriplefromid)(TDB* db, TDBInt64 id);
|
|
} TDBImplement;
|
|
|
|
|
|
TDB_BEGIN_EXTERN_C
|
|
|
|
|
|
/* TDBOpenImplementation() opens a database object which supports the calls
|
|
listed in tdbapi.h, but whose implentation is provided by some other module.
|
|
The implementation is provided as a bunch of function pointers. Each of
|
|
the TDB* routines that correspond to the pointers know to implement
|
|
themselves entirely by calling the appropriate routine.
|
|
|
|
NONE OF THESE FUNCTION POINTERS MAY BE NULL! We don't allow inheritence
|
|
from the base routines. Sorry!
|
|
|
|
The void* that are passed to and from the query(), getresult() and
|
|
freecursor() routines are implementation-specific instances of the
|
|
cursor object. It is up to the implementation how they are done,
|
|
although they will almost certainly need to include a pointer back to the
|
|
database object, or to the impldata.
|
|
|
|
The query() routine returns a pointer to a TDBImplCursor object.
|
|
The db field in that object should be a pointer back to the
|
|
database itself (the same pointer that was passed to query), and should
|
|
never be modified. The data field is implementation-specific, and is where
|
|
the implementation should hang all state relating to the cursor.
|
|
*/
|
|
|
|
|
|
TDB_EXTERN(TDB*) TDBOpenImplementation(TDBImplement* impl);
|
|
|
|
|
|
/* TDBSetImplData() sets implementation-specific data associated with the
|
|
database. */
|
|
|
|
TDB_EXTERN(TDBStatus) TDBSetImplData(TDB* database, void* impldata);
|
|
|
|
/* TDBGetImplData() gets any implementation-specific data associated with the
|
|
database. */
|
|
|
|
TDB_EXTERN(void*) TDBGetImplData(TDB* database);
|
|
|
|
|
|
/* TDBValidateSortOrder takes a sortspec and range, and makes sure the
|
|
keyorder field in the sortspec is correctly filled out.
|
|
*/
|
|
|
|
TDB_EXTERN(void) TDBValidateSortOrder(TDB* tdb, TDBSortSpecification* sortspec,
|
|
TDBNodePtr triple[3]);
|
|
|
|
|
|
TDB_END_EXTERN_C
|
|
|
|
|
|
#endif /* _TDBimpl_h_ */
|