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