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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @file mod_dbd.h
* @brief Database Access Extension Module for Apache
*
* Overview of what this is and does:
* http://www.apache.org/~niq/dbd.html
* or
* http://apache.webthing.com/database/
*
* @defgroup MOD_DBD mod_dbd
* @ingroup APACHE_MODS
* @{
*/
#ifndef DBD_H
#define DBD_H
/* Create a set of DBD_DECLARE(type), DBD_DECLARE_NONSTD(type) and
* DBD_DECLARE_DATA with appropriate export and import tags for the platform
*/
#if !defined(WIN32)
#define DBD_DECLARE(type) type
#define DBD_DECLARE_NONSTD(type) type
#define DBD_DECLARE_DATA
#elif defined(DBD_DECLARE_STATIC)
#define DBD_DECLARE(type) type __stdcall
#define DBD_DECLARE_NONSTD(type) type
#define DBD_DECLARE_DATA
#elif defined(DBD_DECLARE_EXPORT)
#define DBD_DECLARE(type) __declspec(dllexport) type __stdcall
#define DBD_DECLARE_NONSTD(type) __declspec(dllexport) type
#define DBD_DECLARE_DATA __declspec(dllexport)
#else
#define DBD_DECLARE(type) __declspec(dllimport) type __stdcall
#define DBD_DECLARE_NONSTD(type) __declspec(dllimport) type
#define DBD_DECLARE_DATA __declspec(dllimport)
#endif
#include <httpd.h>
#include <apr_optional.h>
#include <apr_hash.h>
#include <apr_hooks.h>
typedef struct {
server_rec *server;
const char *name;
const char *params;
int persist;
#if APR_HAS_THREADS
int nmin;
int nkeep;
int nmax;
int exptime;
int set;
#endif
apr_hash_t *queries;
apr_array_header_t *init_queries;
} dbd_cfg_t;
typedef struct {
apr_dbd_t *handle;
const apr_dbd_driver_t *driver;
apr_hash_t *prepared;
apr_pool_t *pool;
} ap_dbd_t;
/* Export functions to access the database */
/* acquire a connection that MUST be explicitly closed.
* Returns NULL on error
*/
DBD_DECLARE_NONSTD(ap_dbd_t*) ap_dbd_open(apr_pool_t*, server_rec*);
/* release a connection acquired with ap_dbd_open */
DBD_DECLARE_NONSTD(void) ap_dbd_close(server_rec*, ap_dbd_t*);
/* acquire a connection that will have the lifetime of a request
* and MUST NOT be explicitly closed. Return NULL on error.
* This is the preferred function for most applications.
*/
DBD_DECLARE_NONSTD(ap_dbd_t*) ap_dbd_acquire(request_rec*);
/* acquire a connection that will have the lifetime of a connection
* and MUST NOT be explicitly closed. Return NULL on error.
* This is the preferred function for most applications.
*/
DBD_DECLARE_NONSTD(ap_dbd_t*) ap_dbd_cacquire(conn_rec*);
/* Prepare a statement for use by a client module during
* the server startup/configuration phase. Can't be called
* after the server has created its children (use apr_dbd_*).
*/
DBD_DECLARE_NONSTD(void) ap_dbd_prepare(server_rec*, const char*, const char*);
/* Also export them as optional functions for modules that prefer it */
APR_DECLARE_OPTIONAL_FN(ap_dbd_t*, ap_dbd_open, (apr_pool_t*, server_rec*));
APR_DECLARE_OPTIONAL_FN(void, ap_dbd_close, (server_rec*, ap_dbd_t*));
APR_DECLARE_OPTIONAL_FN(ap_dbd_t*, ap_dbd_acquire, (request_rec*));
APR_DECLARE_OPTIONAL_FN(ap_dbd_t*, ap_dbd_cacquire, (conn_rec*));
APR_DECLARE_OPTIONAL_FN(void, ap_dbd_prepare, (server_rec*, const char*, const char*));
APR_DECLARE_EXTERNAL_HOOK(dbd, DBD, apr_status_t, post_connect,
(apr_pool_t *, dbd_cfg_t *, ap_dbd_t *))
#endif
/** @} */