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/*!The Treasure Box Library
*
* TBox is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* TBox is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with TBox;
* If not, see <a href="http://www.gnu.org/licenses/"> http://www.gnu.org/licenses/</a>
*
* Copyright (C) 2009 - 2015, ruki All rights reserved.
*
* @author ruki
* @file sql.h
* @ingroup database
*/
#ifndef TB_DATABASE_SQL_H
#define TB_DATABASE_SQL_H
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "prefix.h"
#include "value.h"
/* //////////////////////////////////////////////////////////////////////////////////////
* extern
*/
__tb_extern_c_enter__
/* //////////////////////////////////////////////////////////////////////////////////////
* types
*/
/// the sql database type enum
typedef enum __tb_database_sql_type_e
{
TB_DATABASE_SQL_TYPE_NONE = 0
, TB_DATABASE_SQL_TYPE_MYSQL = 1
, TB_DATABASE_SQL_TYPE_SQLITE3 = 2
}tb_database_sql_type_e;
/// the database sql ref type
typedef struct{}* tb_database_sql_ref_t;
/// the database sql statement ref type
typedef struct{}* tb_database_sql_statement_ref_t;
/* //////////////////////////////////////////////////////////////////////////////////////
* interfaces
*/
/*! init sql database
*
* @param url the database url
* "sql://localhost/?type=mysql&username=xxxx&password=xxxx"
* "sql://localhost:3306/?type=mysql&username=xxxx&password=xxxx&database=xxxx"
* "sql:///home/file.sqlitedb?type=sqlite3"
* "/home/file.sqlite3"
* "file:///home/file.sqlitedb"
* "C://home/file.sqlite3"
*
* @return the database
*/
tb_database_sql_ref_t tb_database_sql_init(tb_char_t const* url);
/*! exit database
*
* @param database the database handle
*/
tb_void_t tb_database_sql_exit(tb_database_sql_ref_t database);
/*! the database type
*
* @param database the database handle
*
* @return the database type
*/
tb_size_t tb_database_sql_type(tb_database_sql_ref_t database);
/*! open database
*
* @code
tb_database_sql_ref_t database = tb_database_sql_init("sql://localhost/?type=mysql&username=xxxx&password=xxxx");
if (database)
{
// open it
if (tb_database_sql_open(database))
{
// done it
// ...
// close it
tb_database_sql_clos(database);
}
tb_database_sql_exit(database);
}
* @endcode
*
* @param database the database handle
*
* @return tb_true or tb_false
*/
tb_bool_t tb_database_sql_open(tb_database_sql_ref_t database);
/*! clos database
*
* @param database the database handle
*/
tb_void_t tb_database_sql_clos(tb_database_sql_ref_t database);
/*! begin transaction
*
* @param database the database handle
*
* @return tb_true or tb_false
*/
tb_bool_t tb_database_sql_begin(tb_database_sql_ref_t database);
/*! commit transaction
*
* @param database the database handle
*
* @return tb_true or tb_false
*/
tb_bool_t tb_database_sql_commit(tb_database_sql_ref_t database);
/*! rollback transaction
*
* @param database the database handle
*
* @return tb_true or tb_false
*/
tb_bool_t tb_database_sql_rollback(tb_database_sql_ref_t database);
/*! the database state
*
* @param database the database handle
*
* @return the database state
*/
tb_size_t tb_database_sql_state(tb_database_sql_ref_t database);
/*! done database
*
* @code
*
* // done sql
* if (!tb_database_sql_done(database, "select * from table"))
* {
* // trace
* tb_trace_e("done sql failed, error: %s", tb_state_cstr(tb_database_sql_state(database)));
* return ;
* }
*
* // load result
* // ..
*
* @endcode
*
* @param database the database handle
* @param sql the sql command
*
* @return tb_true or tb_false
*/
tb_bool_t tb_database_sql_done(tb_database_sql_ref_t database, tb_char_t const* sql);
/*! load the database result
*
* @code
*
// done sql
// ..
// load result
tb_iterator_ref_t result = tb_database_sql_result_load(database, tb_true);
if (result)
{
// walk result
tb_for_all_if (tb_iterator_ref_t, row, result, row)
{
// walk values
tb_for_all_if (tb_database_sql_value_t*, value, row, value)
{
tb_trace_i("name: %s, data: %s, at: %lux%lu", tb_database_sql_value_name(value), tb_database_sql_value_text(value), row_itor, item_itor);
}
}
// exit result
tb_database_sql_result_exit(result);
}
// load result
tb_iterator_ref_t result = tb_database_sql_result_load(database, tb_false);
if (result)
{
// walk result
tb_for_all_if (tb_iterator_ref_t, row, result, row)
{
// field count
tb_trace_i("count: %lu", tb_iterator_size(row));
// id
tb_database_sql_value_t const* id = tb_iterator_item(row, 0);
if (id)
{
tb_trace_i("id: %d", tb_database_sql_value_int32(id));
}
// name
tb_database_sql_value_t const* name = tb_iterator_item(row, 1);
if (name)
{
tb_trace_i("name: %s", tb_database_sql_value_text(name));
}
// blob
tb_database_sql_value_t const* blob = tb_iterator_item(row, 2);
if (blob)
{
// data?
tb_stream_ref_t stream = tb_null;
if (tb_database_sql_value_blob(blob))
{
// trace
tb_trace_i("[data: %p, size: %lu] ", tb_database_sql_value_blob(blob), tb_database_sql_value_size(blob));
}
// stream?
else if ((stream = tb_database_sql_value_blob_stream(blob)))
{
// trace
tb_trace_i("[stream: %p, size: %lld] ", stream, tb_stream_size(stream));
// read stream
// ...
}
// null?
else
{
// trace
tb_trace_i("[%s:null] ", tb_database_sql_value_name(blob));
}
}
}
// exit result
tb_database_sql_result_exit(result);
}
* @endcode
*
* @param database the database handle
* @param try_all try loading all result into memory
*
* @return the database result
*/
tb_iterator_ref_t tb_database_sql_result_load(tb_database_sql_ref_t database, tb_bool_t try_all);
/*! exit the database result
*
* @param database the database handle
* @param result the database result
*/
tb_void_t tb_database_sql_result_exit(tb_database_sql_ref_t database, tb_iterator_ref_t result);
/*! init the database statement
*
* @param database the database handle
* @param sql the sql command
*
* @return the statement handle
*/
tb_database_sql_statement_ref_t tb_database_sql_statement_init(tb_database_sql_ref_t database, tb_char_t const* sql);
/*! exit the database statement
*
* @param database the database handle
* @param statement the statement handle
*/
tb_void_t tb_database_sql_statement_exit(tb_database_sql_ref_t database, tb_database_sql_statement_ref_t statement);
/*! done the database statement
*
* @code
tb_database_sql_statement_ref_t statement = tb_database_sql_statement_init(database, "select * from table where id=?");
if (statement)
{
// bind arguments
tb_database_sql_value_t list[1] = {0};
tb_database_sql_value_set_int32(&list[0], 12345);
if (tb_database_sql_statement_bind(database, statement, list, tb_arrayn(list)))
{
// done statement
if (tb_database_sql_statement_done(database, statement))
{
// load result
// ...
}
}
// exit statement
tb_database_sql_statement_exit(database, statement);
}
* @endcode
*
* @param database the database handle
* @param statement the statement handle
*
* @return tb_true or tb_false
*/
tb_bool_t tb_database_sql_statement_done(tb_database_sql_ref_t database, tb_database_sql_statement_ref_t statement);
/*! bind the database statement argument
*
* @param database the database handle
* @param statement the statement handle
* @param list the argument value list
* @param size the argument value count
*
* @return tb_true or tb_false
*/
tb_bool_t tb_database_sql_statement_bind(tb_database_sql_ref_t database, tb_database_sql_statement_ref_t statement, tb_database_sql_value_t const* list, tb_size_t size);
/* //////////////////////////////////////////////////////////////////////////////////////
* extern
*/
__tb_extern_c_leave__
#endif
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