~drizzle-trunk/drizzle/development

2244.1.1 by Monty Taylor
Split libdrizzle into 1.0 and 2.0. Applied the C++ changes to 2.0 branch.
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/*
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 * Drizzle Client & Protocol Library
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 *
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 * Copyright (C) 2008 Eric Day (eday@oddments.org)
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions are
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 * met:
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 *
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 *     * Redistributions of source code must retain the above copyright
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 * notice, this list of conditions and the following disclaimer.
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 *
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 *     * Redistributions in binary form must reproduce the above
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 * copyright notice, this list of conditions and the following disclaimer
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 * in the documentation and/or other materials provided with the
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 * distribution.
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 *
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 *     * The names of its contributors may not be used to endorse or
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 * promote products derived from this software without specific prior
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 * written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 *
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 */
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/**
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 * @file
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 * @brief Row Declarations for Clients
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 */
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#ifndef __DRIZZLE_ROW_CLIENT_H
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#define __DRIZZLE_ROW_CLIENT_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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 * @addtogroup drizzle_row_client Row Declarations for Clients
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 * @ingroup drizzle_client_interface
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 *
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 * These functions allow you to access rows in a result set. If the result is
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 * unbuffered, you can read and buffer rows one at a time. If the rows are
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 * buffered in the result, the drizzle_row_next() and related functions can be
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 * used.
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 * @{
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 */
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/**
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 * Get next row number for unbuffered results. Use the drizzle_field* functions
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 * to read individual fields after this function succeeds.
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 *
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 * @param[in,out] result pointer to the structure to read from.
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 * @param[out] ret_ptr Standard libdrizzle return value. May be set to
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 *      DRIZZLE_RESULT_ERROR_CODE if the server return an error, such as a
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 *      deadlock.
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 * @return the row id if there is a valid row, or 0 if there are no more rows or an error.
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 */
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DRIZZLE_API
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uint64_t drizzle_row_read(drizzle_result_st *result, drizzle_return_t *ret_ptr);
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/**
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 * Read and buffer one row. The returned row must be freed by the caller with
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 * drizzle_row_free().
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 *
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 * @param[in,out] result pointer to the result structure to read from.
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 * @param[out] ret_pointer Standard drizzle return value.
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 * @return the row that was read, or NULL if there are no more rows.
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 */
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DRIZZLE_API
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drizzle_row_t drizzle_row_buffer(drizzle_result_st *result,
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                                 drizzle_return_t *ret_ptr);
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/**
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 * Free a row that was buffered with drizzle_row_buffer().
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 */
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DRIZZLE_API
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void drizzle_row_free(drizzle_result_st *result, drizzle_row_t row);
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/**
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 * Get an array of all field sizes for buffered rows.
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 */
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DRIZZLE_API
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size_t *drizzle_row_field_sizes(drizzle_result_st *result);
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/**
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 * Get next buffered row from a fully buffered result.
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 */
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DRIZZLE_API
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drizzle_row_t drizzle_row_next(drizzle_result_st *result);
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/**
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 * Get previous buffered row from a fully buffered result.
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 */
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DRIZZLE_API
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drizzle_row_t drizzle_row_prev(drizzle_result_st *result);
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/**
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 * Seek to the given buffered row in a fully buffered result.
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 */
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DRIZZLE_API
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void drizzle_row_seek(drizzle_result_st *result, uint64_t row);
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/**
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 * Get the given buffered row from a fully buffered result.
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 */
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DRIZZLE_API
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drizzle_row_t drizzle_row_index(drizzle_result_st *result, uint64_t row);
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/**
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 * Get current row number.
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 */
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DRIZZLE_API
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uint64_t drizzle_row_current(drizzle_result_st *result);
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/** @} */
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#ifdef __cplusplus
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}
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#endif
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#endif /* __DRIZZLE_ROW_CLIENT_H */