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innodb and PMA_getForeigners

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This commit is contained in:
Marc Delisle
2003-06-19 19:42:58 +00:00
parent f458691636
commit 3db7d19956
3 changed files with 73 additions and 47 deletions
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73
libraries/relation.lib.php3
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@@ -272,6 +272,7 @@ if (!defined('PMA_RELATION_LIB_INCLUDED')){
* @param string the name of the db to check for
* @param string the name of the table to check for
* @param string the name of the column to check for
* @param string the source for foreign key information
*
* @return array db,table,column
*
@@ -280,33 +281,61 @@ if (!defined('PMA_RELATION_LIB_INCLUDED')){
*
* @access public
*
* @author Mike Beck <mikebeck@users.sourceforge.net>
* @author Mike Beck <mikebeck@users.sourceforge.net> and Marc Delisle
*/
function PMA_getForeigners($db, $table, $column = '') {
function PMA_getForeigners($db, $table, $column = '', $source = 'both') {
global $cfgRelation, $err_url_0;
$rel_query = 'SELECT master_field, foreign_db, foreign_table, foreign_field'
. ' FROM ' . PMA_backquote($cfgRelation['relation'])
. ' WHERE master_db = \'' . PMA_sqlAddslashes($db) . '\' '
. ' AND master_table = \'' . PMA_sqlAddslashes($table) . '\' ';
if (!empty($column)) {
$rel_query .= ' AND master_field = \'' . PMA_sqlAddslashes($column) . '\'';
if ($source == 'both' || $source == 'internal') {
$rel_query = 'SELECT master_field, foreign_db, foreign_table, foreign_field'
. ' FROM ' . PMA_backquote($cfgRelation['relation'])
. ' WHERE master_db = \'' . PMA_sqlAddslashes($db) . '\' '
. ' AND master_table = \'' . PMA_sqlAddslashes($table) . '\' ';
if (!empty($column)) {
$rel_query .= ' AND master_field = \'' . PMA_sqlAddslashes($column) . '\'';
}
$relations = PMA_query_as_cu($rel_query);
$i = 0;
while ($relrow = @PMA_mysql_fetch_array($relations)) {
$field = $relrow['master_field'];
$foreign[$field]['foreign_db'] = $relrow['foreign_db'];
$foreign[$field]['foreign_table'] = $relrow['foreign_table'];
$foreign[$field]['foreign_field'] = $relrow['foreign_field'];
$i++;
} // end while
}
$relations = PMA_query_as_cu($rel_query);
$i = 0;
while ($relrow = @PMA_mysql_fetch_array($relations)) {
$field = $relrow['master_field'];
$foreign[$field]['foreign_db'] = $relrow['foreign_db'];
$foreign[$field]['foreign_table'] = $relrow['foreign_table'];
$foreign[$field]['foreign_field'] = $relrow['foreign_field'];
$i++;
} // end while
if (isset($foreign) && is_array($foreign)) {
return $foreign;
} else {
return FALSE;
}
if ($source == 'both' || $source == 'innodb') {
$show_create_table_query = 'SHOW CREATE TABLE '
. PMA_backquote($db) . '.' . PMA_backquote($table);
$show_create_table_res = PMA_mysql_query($show_create_table_query);
list(,$show_create_table) = PMA_mysql_fetch_row($show_create_table_res);
$analyzed_sql = PMA_SQP_analyze(PMA_SQP_parse($show_create_table));
while (list(,$one_key) = each ($analyzed_sql[0]['foreign_keys'])) {
// TODO: the analyzer may return more than one column name in the
// index list or the ref_index_list but for now we take the first
$field = $one_key['index_list'][0];
// TODO: SHOW CREATE TABLE does not return the db name in
// the REFERENCES, so we assume the same db as master
// If a foreign key is defined in the 'internal' source (pmadb)
// and in 'innodb', we won't get it twice if $source='both'
// because we use $field as key
$foreign[$field]['foreign_db'] = $db;
$foreign[$field]['foreign_table'] = $one_key['ref_table_name'];
$foreign[$field]['foreign_field'] = $one_key['ref_index_list'][0];
}
}
if (isset($foreign) && is_array($foreign)) {
return $foreign;
} else {
return FALSE;
}
} // end of the 'PMA_getForeigners()' function