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<?php
// +----------------------------------------------------------------------+
// | PHP versions 4 and 5 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox, |
// | Stig. S. Bakken, Lukas Smith, Frank M. Kromann |
// | 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. |
// +----------------------------------------------------------------------+
// | Authors: Lukas Smith <smith@pooteeweet.org> |
// | Lorenzo Alberton <l.alberton@quipo.it> |
// +----------------------------------------------------------------------+
//
// $Id: mssql.php,v 1.42 2007/03/29 18:18:06 quipo Exp $
//
require_once 'MDB2/Driver/Reverse/Common.php';
/**
* MDB2 MSSQL driver for the schema reverse engineering module
*
* @package MDB2
* @category Database
* @author Lukas Smith <smith@dybnet.de>
* @author Lorenzo Alberton <l.alberton@quipo.it>
*/
class MDB2_Driver_Reverse_mssql extends MDB2_Driver_Reverse_Common
{
// {{{ getTableFieldDefinition()
/**
* Get the structure of a field into an array
*
* @param string $table name of table that should be used in method
* @param string $field_name name of field that should be used in method
* @return mixed data array on success, a MDB2 error on failure
* @access public
*/
function getTableFieldDefinition($table, $field_name)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
$result = $db->loadModule('Datatype', null, true);
if (PEAR::isError($result)) {
return $result;
}
$table = $db->quoteIdentifier($table, true);
$fldname = $db->quoteIdentifier($field_name, true);
$query = "SELECT t.table_name,
c.column_name 'name',
c.data_type 'type',
CASE c.is_nullable WHEN 'YES' THEN 1 ELSE 0 END AS 'is_nullable',
c.column_default,
c.character_maximum_length 'length',
c.numeric_precision,
c.numeric_scale,
c.character_set_name,
c.collation_name
FROM INFORMATION_SCHEMA.TABLES t,
INFORMATION_SCHEMA.COLUMNS c
WHERE t.table_name = c.table_name
AND t.table_name = '$table'
AND c.column_name = '$fldname'
ORDER BY t.table_name";
$column = $db->queryRow($query, null, MDB2_FETCHMODE_ASSOC);
if (PEAR::isError($column)) {
return $column;
}
if (empty($column)) {
return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
'it was not specified an existing table column', __FUNCTION__);
}
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
if ($db->options['field_case'] == CASE_LOWER) {
$column['name'] = strtolower($column['name']);
} else {
$column['name'] = strtoupper($column['name']);
}
} else {
$column = array_change_key_case($column, $db->options['field_case']);
}
$mapped_datatype = $db->datatype->mapNativeDatatype($column);
if (PEAR::IsError($mapped_datatype)) {
return $mapped_datatype;
}
list($types, $length, $unsigned, $fixed) = $mapped_datatype;
$notnull = true;
if ($column['is_nullable']) {
$notnull = false;
}
$default = false;
if (array_key_exists('column_default', $column)) {
$default = $column['column_default'];
if (is_null($default) && $notnull) {
$default = '';
} elseif (strlen($default) > 4
&& substr($default, 0, 1) == '('
&& substr($default, -1, 1) == ')'
) {
//mssql wraps the default value in parentheses: "((1234))", "(NULL)"
$default = trim($default, '()');
if ($default == 'NULL') {
$default = null;
}
}
}
$definition[0] = array(
'notnull' => $notnull,
'nativetype' => preg_replace('/^([a-z]+)[^a-z].*/i', '\\1', $column['type'])
);
if (!is_null($length)) {
$definition[0]['length'] = $length;
}
if (!is_null($unsigned)) {
$definition[0]['unsigned'] = $unsigned;
}
if (!is_null($fixed)) {
$definition[0]['fixed'] = $fixed;
}
if ($default !== false) {
$definition[0]['default'] = $default;
}
foreach ($types as $key => $type) {
$definition[$key] = $definition[0];
if ($type == 'clob' || $type == 'blob') {
unset($definition[$key]['default']);
}
$definition[$key]['type'] = $type;
$definition[$key]['mdb2type'] = $type;
}
return $definition;
}
// }}}
// {{{ getTableIndexDefinition()
/**
* Get the structure of an index into an array
*
* @param string $table name of table that should be used in method
* @param string $index_name name of index that should be used in method
* @return mixed data array on success, a MDB2 error on failure
* @access public
*/
function getTableIndexDefinition($table, $index_name)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
$table = $db->quoteIdentifier($table, true);
//$idxname = $db->quoteIdentifier($index_name, true);
$query = "SELECT OBJECT_NAME(i.id) tablename,
i.name indexname,
c.name field_name,
CASE INDEXKEY_PROPERTY(i.id, i.indid, ik.keyno, 'IsDescending')
WHEN 1 THEN 'DESC' ELSE 'ASC'
END 'collation',
ik.keyno 'position'
FROM sysindexes i
JOIN sysindexkeys ik ON ik.id = i.id AND ik.indid = i.indid
JOIN syscolumns c ON c.id = ik.id AND c.colid = ik.colid
WHERE OBJECT_NAME(i.id) = '$table'
AND i.name = '%s'
AND NOT EXISTS (
SELECT *
FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE k
WHERE k.table_name = OBJECT_NAME(i.id)
AND k.constraint_name = i.name)
ORDER BY tablename, indexname, ik.keyno";
$index_name_mdb2 = $db->getIndexName($index_name);
$result = $db->queryRow(sprintf($query, $index_name_mdb2));
if (!PEAR::isError($result) && !is_null($result)) {
// apply 'idxname_format' only if the query succeeded, otherwise
// fallback to the given $index_name, without transformation
$index_name = $index_name_mdb2;
}
$result = $db->query(sprintf($query, $index_name));
if (PEAR::isError($result)) {
return $result;
}
$definition = array();
while (is_array($row = $result->fetchRow(MDB2_FETCHMODE_ASSOC))) {
$column_name = $row['field_name'];
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
if ($db->options['field_case'] == CASE_LOWER) {
$column_name = strtolower($column_name);
} else {
$column_name = strtoupper($column_name);
}
}
$definition['fields'][$column_name] = array(
'position' => (int)$row['position'],
);
if (!empty($row['collation'])) {
$definition['fields'][$column_name]['sorting'] = ($row['collation'] == 'ASC'
? 'ascending' : 'descending');
}
}
$result->free();
if (empty($definition['fields'])) {
return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
'it was not specified an existing table index', __FUNCTION__);
}
return $definition;
}
// }}}
// {{{ getTableConstraintDefinition()
/**
* Get the structure of a constraint into an array
*
* @param string $table name of table that should be used in method
* @param string $constraint_name name of constraint that should be used in method
* @return mixed data array on success, a MDB2 error on failure
* @access public
*/
function getTableConstraintDefinition($table, $constraint_name)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
$table = $db->quoteIdentifier($table, true);
$query = "SELECT k.table_name,
k.column_name field_name,
CASE c.constraint_type WHEN 'PRIMARY KEY' THEN 1 ELSE 0 END 'primary',
CASE c.constraint_type WHEN 'UNIQUE' THEN 1 ELSE 0 END 'unique',
CASE c.constraint_type WHEN 'FOREIGN KEY' THEN 1 ELSE 0 END 'foreign',
CASE c.constraint_type WHEN 'CHECK' THEN 1 ELSE 0 END 'check',
k.ordinal_position
FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE k
LEFT JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS c
ON k.table_name = c.table_name
AND k.constraint_name = c.constraint_name
AND k.table_schema = c.table_schema
WHERE k.constraint_catalog = DB_NAME()
AND k.table_name = '$table'
AND k.constraint_name = '%s'
ORDER BY k.constraint_name,
k.ordinal_position";
$constraint_name_mdb2 = $db->getIndexName($constraint_name);
$result = $db->queryRow(sprintf($query, $constraint_name_mdb2));
if (!PEAR::isError($result) && !is_null($result)) {
// apply 'idxname_format' only if the query succeeded, otherwise
// fallback to the given $index_name, without transformation
$constraint_name = $constraint_name_mdb2;
}
$result = $db->query(sprintf($query, $constraint_name));
if (PEAR::isError($result)) {
return $result;
}
$definition = array();
while (is_array($row = $result->fetchRow(MDB2_FETCHMODE_ASSOC))) {
$column_name = $row['field_name'];
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
if ($db->options['field_case'] == CASE_LOWER) {
$column_name = strtolower($column_name);
} else {
$column_name = strtoupper($column_name);
}
}
$definition['fields'][$column_name] = array(
'position' => (int)$row['ordinal_position']
);
/*
if (!empty($row['collation'])) {
$definition['fields'][$column_name]['sorting'] = ($row['collation'] == 'ASC'
? 'ascending' : 'descending');
}
*/
$definition['primary'] = $row['primary'];
$definition['unique'] = $row['unique'];
$definition['foreign'] = $row['foreign'];
$definition['check'] = $row['check'];
}
$result->free();
if (empty($definition['fields'])) {
return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
$constraint_name . ' is not an existing table constraint', __FUNCTION__);
}
return $definition;
}
// }}}
// {{{ getTriggerDefinition()
/**
* Get the structure of a trigger into an array
*
* EXPERIMENTAL
*
* WARNING: this function is experimental and may change the returned value
* at any time until labelled as non-experimental
*
* @param string $trigger name of trigger that should be used in method
* @return mixed data array on success, a MDB2 error on failure
* @access public
*/
function getTriggerDefinition($trigger)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
$query = "SELECT sys1.name trigger_name,
sys2.name table_name,
c.text trigger_body,
c.encrypted is_encripted,
CASE
WHEN OBJECTPROPERTY(sys1.id, 'ExecIsTriggerDisabled') = 1
THEN 0 ELSE 1
END trigger_enabled,
CASE
WHEN OBJECTPROPERTY(sys1.id, 'ExecIsInsertTrigger') = 1
THEN 'INSERT'
WHEN OBJECTPROPERTY(sys1.id, 'ExecIsUpdateTrigger') = 1
THEN 'UPDATE'
WHEN OBJECTPROPERTY(sys1.id, 'ExecIsDeleteTrigger') = 1
THEN 'DELETE'
END trigger_event,
CASE WHEN OBJECTPROPERTY(sys1.id, 'ExecIsInsteadOfTrigger') = 1
THEN 'INSTEAD OF' ELSE 'AFTER'
END trigger_type,
'' trigger_comment
FROM sysobjects sys1
JOIN sysobjects sys2 ON sys1.parent_obj = sys2.id
JOIN syscomments c ON sys1.id = c.id
WHERE sys1.xtype = 'TR'
AND sys1.name = ". $db->quote($trigger, 'text');
$types = array(
'trigger_name' => 'text',
'table_name' => 'text',
'trigger_body' => 'text',
'trigger_type' => 'text',
'trigger_event' => 'text',
'trigger_comment' => 'text',
'trigger_enabled' => 'boolean',
'is_encripted' => 'boolean',
);
$def = $db->queryRow($query, $types, MDB2_FETCHMODE_ASSOC);
if (PEAR::isError($def)) {
return $def;
}
$trg_body = $db->queryCol('EXEC sp_helptext '. $db->quote($trigger, 'text'), 'text');
if (!PEAR::isError($trg_body)) {
$def['trigger_body'] = implode('', $trg_body);
}
return $def;
}
// }}}
// {{{ tableInfo()
/**
* Returns information about a table or a result set
*
* NOTE: only supports 'table' and 'flags' if <var>$result</var>
* is a table name.
*
* @param object|string $result MDB2_result object from a query or a
* string containing the name of a table.
* While this also accepts a query result
* resource identifier, this behavior is
* deprecated.
* @param int $mode a valid tableInfo mode
*
* @return array an associative array with the information requested.
* A MDB2_Error object on failure.
*
* @see MDB2_Driver_Common::tableInfo()
*/
function tableInfo($result, $mode = null)
{
if (is_string($result)) {
return parent::tableInfo($result, $mode);
}
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
$resource = MDB2::isResultCommon($result) ? $result->getResource() : $result;
if (!is_resource($resource)) {
return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
'Could not generate result resource', __FUNCTION__);
}
if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
if ($db->options['field_case'] == CASE_LOWER) {
$case_func = 'strtolower';
} else {
$case_func = 'strtoupper';
}
} else {
$case_func = 'strval';
}
$count = @mssql_num_fields($resource);
$res = array();
if ($mode) {
$res['num_fields'] = $count;
}
$db->loadModule('Datatype', null, true);
for ($i = 0; $i < $count; $i++) {
$res[$i] = array(
'table' => '',
'name' => $case_func(@mssql_field_name($resource, $i)),
'type' => @mssql_field_type($resource, $i),
'length' => @mssql_field_length($resource, $i),
'flags' => '',
);
$mdb2type_info = $db->datatype->mapNativeDatatype($res[$i]);
if (PEAR::isError($mdb2type_info)) {
return $mdb2type_info;
}
$res[$i]['mdb2type'] = $mdb2type_info[0][0];
if ($mode & MDB2_TABLEINFO_ORDER) {
$res['order'][$res[$i]['name']] = $i;
}
if ($mode & MDB2_TABLEINFO_ORDERTABLE) {
$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
}
}
return $res;
}
// }}}
// {{{ _mssql_field_flags()
/**
* Get a column's flags
*
* Supports "not_null", "primary_key",
* "auto_increment" (mssql identity), "timestamp" (mssql timestamp),
* "unique_key" (mssql unique index, unique check or primary_key) and
* "multiple_key" (multikey index)
*
* mssql timestamp is NOT similar to the mysql timestamp so this is maybe
* not useful at all - is the behaviour of mysql_field_flags that primary
* keys are alway unique? is the interpretation of multiple_key correct?
*
* @param string $table the table name
* @param string $column the field name
*
* @return string the flags
*
* @access protected
* @author Joern Barthel <j_barthel@web.de>
*/
function _mssql_field_flags($table, $column)
{
$db =& $this->getDBInstance();
if (PEAR::isError($db)) {
return $db;
}
static $tableName = null;
static $flags = array();
if ($table != $tableName) {
$flags = array();
$tableName = $table;
// get unique and primary keys
$res = $db->queryAll("EXEC SP_HELPINDEX[$table]", null, MDB2_FETCHMODE_ASSOC);
foreach ($res as $val) {
$val = array_change_key_case($val, CASE_LOWER);
$keys = explode(', ', $val['index_keys']);
if (sizeof($keys) > 1) {
foreach ($keys as $key) {
$this->_add_flag($flags[$key], 'multiple_key');
}
}
if (strpos($val['index_description'], 'primary key')) {
foreach ($keys as $key) {
$this->_add_flag($flags[$key], 'primary_key');
}
} elseif (strpos($val['index_description'], 'unique')) {
foreach ($keys as $key) {
$this->_add_flag($flags[$key], 'unique_key');
}
}
}
// get auto_increment, not_null and timestamp
$res = $db->queryAll("EXEC SP_COLUMNS[$table]", null, MDB2_FETCHMODE_ASSOC);
foreach ($res as $val) {
$val = array_change_key_case($val, CASE_LOWER);
if ($val['nullable'] == '0') {
$this->_add_flag($flags[$val['column_name']], 'not_null');
}
if (strpos($val['type_name'], 'identity')) {
$this->_add_flag($flags[$val['column_name']], 'auto_increment');
}
if (strpos($val['type_name'], 'timestamp')) {
$this->_add_flag($flags[$val['column_name']], 'timestamp');
}
}
}
if (!empty($flags[$column])) {
return(implode(' ', $flags[$column]));
}
return '';
}
// }}}
// {{{ _add_flag()
/**
* Adds a string to the flags array if the flag is not yet in there
* - if there is no flag present the array is created
*
* @param array &$array the reference to the flag-array
* @param string $value the flag value
*
* @return void
*
* @access protected
* @author Joern Barthel <j_barthel@web.de>
*/
function _add_flag(&$array, $value)
{
if (!is_array($array)) {
$array = array($value);
} elseif (!in_array($value, $array)) {
array_push($array, $value);
}
}
// }}}
}
?>
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