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Diffstat (limited to 'program/lib/MDB2/Driver/Function/Common.php')
| -rw-r--r-- | program/lib/MDB2/Driver/Function/Common.php | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/program/lib/MDB2/Driver/Function/Common.php b/program/lib/MDB2/Driver/Function/Common.php new file mode 100644 index 000000000..74971e2bb --- /dev/null +++ b/program/lib/MDB2/Driver/Function/Common.php @@ -0,0 +1,249 @@ +<?php +// +----------------------------------------------------------------------+ +// | PHP versions 4 and 5 | +// +----------------------------------------------------------------------+ +// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox, | +// | Stig. S. Bakken, Lukas Smith | +// | All rights reserved. | +// +----------------------------------------------------------------------+ +// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB | +// | API as well as database abstraction for PHP applications. | +// | This LICENSE is in the BSD license style. | +// | | +// | Redistribution and use in source and binary forms, with or without | +// | modification, are permitted provided that the following conditions | +// | are met: | +// | | +// | Redistributions of source code must retain the above copyright | +// | notice, this list of conditions and the following disclaimer. | +// | | +// | Redistributions in binary form must reproduce the above copyright | +// | notice, this list of conditions and the following disclaimer in the | +// | documentation and/or other materials provided with the distribution. | +// | | +// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, | +// | Lukas Smith nor the names of his contributors may be used to endorse | +// | or promote products derived from this software without specific prior| +// | written permission. | +// | | +// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | +// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | +// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | +// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | +// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | +// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | +// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS| +// | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED | +// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | +// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY| +// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | +// | POSSIBILITY OF SUCH DAMAGE. | +// +----------------------------------------------------------------------+ +// | Author: Lukas Smith <smith@pooteeweet.org> | +// +----------------------------------------------------------------------+ +// +// $Id: Common.php,v 1.19 2007/09/09 13:47:36 quipo Exp $ +// + +/** + * @package MDB2 + * @category Database + * @author Lukas Smith <smith@pooteeweet.org> + */ + +/** + * Base class for the function modules that is extended by each MDB2 driver + * + * To load this module in the MDB2 object: + * $mdb->loadModule('Function'); + * + * @package MDB2 + * @category Database + * @author Lukas Smith <smith@pooteeweet.org> + */ +class MDB2_Driver_Function_Common extends MDB2_Module_Common +{ + // {{{ executeStoredProc() + + /** + * Execute a stored procedure and return any results + * + * @param string $name string that identifies the function to execute + * @param mixed $params array that contains the paramaters to pass the stored proc + * @param mixed $types array that contains the types of the columns in + * the result set + * @param mixed $result_class string which specifies which result class to use + * @param mixed $result_wrap_class string which specifies which class to wrap results in + * @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure + * @access public + */ + function &executeStoredProc($name, $params = null, $types = null, $result_class = true, $result_wrap_class = false) + { + $db =& $this->getDBInstance(); + if (PEAR::isError($db)) { + return $db; + } + + $error =& $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'method not implemented', __FUNCTION__); + return $error; + } + + // }}} + // {{{ functionTable() + + /** + * return string for internal table used when calling only a function + * + * @return string for internal table used when calling only a function + * @access public + */ + function functionTable() + { + return ''; + } + + // }}} + // {{{ now() + + /** + * Return string to call a variable with the current timestamp inside an SQL statement + * There are three special variables for current date and time: + * - CURRENT_TIMESTAMP (date and time, TIMESTAMP type) + * - CURRENT_DATE (date, DATE type) + * - CURRENT_TIME (time, TIME type) + * + * @return string to call a variable with the current timestamp + * @access public + */ + function now($type = 'timestamp') + { + switch ($type) { + case 'time': + return 'CURRENT_TIME'; + case 'date': + return 'CURRENT_DATE'; + case 'timestamp': + default: + return 'CURRENT_TIMESTAMP'; + } + } + + // }}} + // {{{ substring() + + /** + * return string to call a function to get a substring inside an SQL statement + * + * @return string to call a function to get a substring + * @access public + */ + function substring($value, $position = 1, $length = null) + { + if (!is_null($length)) { + return "SUBSTRING($value FROM $position FOR $length)"; + } + return "SUBSTRING($value FROM $position)"; + } + + // }}} + // {{{ concat() + + /** + * Returns string to concatenate two or more string parameters + * + * @param string $value1 + * @param string $value2 + * @param string $values... + * @return string to concatenate two strings + * @access public + */ + function concat($value1, $value2) + { + $args = func_get_args(); + return "(".implode(' || ', $args).")"; + } + + // }}} + // {{{ random() + + /** + * return string to call a function to get random value inside an SQL statement + * + * @return return string to generate float between 0 and 1 + * @access public + */ + function random() + { + return 'RAND()'; + } + + // }}} + // {{{ lower() + + /** + * return string to call a function to lower the case of an expression + * + * @param string $expression + * @return return string to lower case of an expression + * @access public + */ + function lower($expression) + { + return "LOWER($expression)"; + } + + // }}} + // {{{ upper() + + /** + * return string to call a function to upper the case of an expression + * + * @param string $expression + * @return return string to upper case of an expression + * @access public + */ + function upper($expression) + { + return "UPPER($expression)"; + } + + // }}} + // {{{ length() + + /** + * return string to call a function to get the length of a string expression + * + * @param string $expression + * @return return string to get the string expression length + * @access public + */ + function length($expression) + { + return "LENGTH($expression)"; + } + + // }}} + // {{{ guid() + + /** + * Returns global unique identifier + * + * @return string to get global unique identifier + * @access public + */ + function guid() + { + $db =& $this->getDBInstance(); + if (PEAR::isError($db)) { + return $db; + } + + $error =& $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, + 'method not implemented', __FUNCTION__); + return $error; + } + + // }}} +} +?>
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