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ON DELETE ON UPDATE

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This commit is contained in:
Marc Delisle
2003-08-31 11:48:38 +00:00
parent f34b8a9c12
commit 07901644c4
2 changed files with 40 additions and 1 deletions
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3
ChangeLog
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@@ -5,6 +5,9 @@ phpMyAdmin - Changelog
$Id$
$Source$
2003-08-31 Marc Delisle <lem9@users.sourceforge.net>
* libraries/sqlparser.lib.php3: extract ON DELETE, ON UPDATE for FOREIGN KEYs
2003-08-28 Alexander M. Turek <rabus@users.sourceforge.net>
* README: Updated php / MySQL versions.

38
libraries/sqlparser.lib.php3
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@@ -749,7 +749,8 @@ if (!defined('PMA_SQP_LIB_INCLUDED')) {
* The CREATE TABLE may contain FOREIGN KEY clauses, so they get
* analyzed and ['foreign_keys'] is an array filled with
* the constraint name, the index list,
* the REFERENCES table name and REFERENCES index list.
* the REFERENCES table name and REFERENCES index list,
* and ON UPDATE | ON DELETE clauses
*
* lem9: position_of_first_select
* ------------------------
@@ -1382,6 +1383,7 @@ if (!defined('PMA_SQP_LIB_INCLUDED')) {
$foreign_key_number = -1;
for ($i = 0; $i < $size; $i++) {
// DEBUG echo $arr[$i]['data'] . " " . $arr[$i]['type'] . "<br>";
if ($arr[$i]['type'] == 'alpha_reservedWord') {
$upper_data = strtoupper($arr[$i]['data']);
@@ -1401,6 +1403,40 @@ if (!defined('PMA_SQP_LIB_INCLUDED')) {
$seen_references = TRUE;
$seen_constraint = FALSE;
}
// [ON DELETE {CASCADE | SET NULL | NO ACTION | RESTRICT}]
// [ON UPDATE {CASCADE | SET NULL | NO ACTION | RESTRICT}]
// but we set ['on_delete'] or ['on_cascade'] to
// CASCADE | SET_NULL | NO_ACTION | RESTRICT
if ($upper_data == 'ON') {
unset($clause);
if ($arr[$i+1]['type'] == 'alpha_reservedWord') {
$second_upper_data = strtoupper($arr[$i+1]['data']);
if ($second_upper_data == 'DELETE') {
$clause = 'on_delete';
}
if ($second_upper_data == 'UPDATE') {
$clause = 'on_update';
}
if (isset($clause) && $arr[$i+2]['type'] == 'alpha_reservedWord') {
$third_upper_data = strtoupper($arr[$i+2]['data']);
if ($third_upper_data == 'CASCADE'
|| $third_upper_data == 'RESTRICT') {
$value = $third_upper_data;
} elseif ($third_upper_data == 'SET'
|| $third_upper_data == 'NO') {
if ($arr[$i+3]['type'] == 'alpha_reservedWord') {
$value = $third_upper_data . '_' . strtoupper($arr[$i+3]['data']);
}
}
$foreign[$foreign_key_number][$clause] = $value;
}
}
}
}
if ($arr[$i]['type'] == 'punct_bracket_open_round') {