79 lines
3.0 KiB
PHP
79 lines
3.0 KiB
PHP
<?php
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/* $Id$ */
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// vim: expandtab sw=4 ts=4 sts=4:
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include_once 'pmd_session.php';
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$die_save_pos = 0;
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include_once 'pmd_save_pos.php';
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require_once './libraries/relation.lib.php';
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extract($_POST);
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PMA_getRelationsParam();
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$tables = PMA_DBI_get_tables_full($db, $T1);
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$type_T1 = strtoupper($tables[$T1]['ENGINE']);
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$tables = PMA_DBI_get_tables_full($db, $T2);
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$type_T2 = strtoupper($tables[$T2]['ENGINE']);
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// I n n o D B
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if ($type_T1 == 'INNODB' and $type_T2 == 'INNODB') {
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// relation exists?
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$existrel_innodb = PMA_getForeigners($db, $T2, '', 'innodb');
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if (isset($existrel_innodb[$F2])
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&& isset($existrel_innodb[$F2]['constraint'])) {
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PMD_return(0,'ERROR : Relation already exists!');
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}
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// note: in InnoDB, the index does not requires to be on a PRIMARY
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// or UNIQUE key
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// improve: check all other requirements for InnoDB relations
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$result = PMA_DBI_query('SHOW INDEX FROM ' . PMA_backquote($T1) . ';');
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$index_array1 = array(); // will be use to emphasis prim. keys in the table view
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while ($row = PMA_DBI_fetch_assoc($result))
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$index_array1[$row['Column_name']] = 1;
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PMA_DBI_free_result($result);
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$result = PMA_DBI_query('SHOW INDEX FROM ' . PMA_backquote($T2) . ';');
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$index_array2 = array(); // will be used to emphasis prim. keys in the table view
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while ($row = PMA_DBI_fetch_assoc($result))
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$index_array2[$row['Column_name']] = 1;
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PMA_DBI_free_result($result);
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if (! empty($index_array1[$F1]) && ! empty($index_array2[$F2])) {
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$upd_query = 'ALTER TABLE ' . PMA_backquote($T2)
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. ' ADD FOREIGN KEY ('
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. PMA_backquote($F2) . ')'
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. ' REFERENCES '
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. PMA_backquote($db) . '.'
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. PMA_backquote($T1) . '('
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. PMA_backquote($F1) . ')';
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if ($on_delete != 'nix') {
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$upd_query .= ' ON DELETE ' . $on_delete;
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}
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if ($on_update != 'nix') {
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$upd_query .= ' ON UPDATE ' . $on_update;
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}
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PMA_DBI_try_query($upd_query) or PMD_return(0,'ERROR : Relation not added!!!');
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PMD_return(1,$strInnoDBRelationAdded);
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}
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// n o n - I n n o D B
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} else {
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// no need to recheck if the keys are primary or unique at this point,
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// this was checked on the interface part
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$q = "INSERT INTO ".PMA_backquote($GLOBALS['cfgRelation']['db']) . '.' . PMA_backquote($cfgRelation['relation'])."
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(master_db, master_table, master_field, foreign_db, foreign_table, foreign_field)
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VALUES ('".$db."','".$T2."','$F2','".
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$db."','".$T1."','$F1')";
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PMA_query_as_cu( $q , true, PMA_DBI_QUERY_STORE);// or PMD_return(0,'ERROR : Relation not added!');
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PMD_return(1, $strInternalRelationAdded);
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}
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function PMD_return($b,$ret)
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{
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global $db,$T1,$F1,$T2,$F2;
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die('<root act="relation_new" return="'.$ret.'" b="'.$b.'" DB1="'.$db.'" T1="'.$T1.'" F1="'.$F1.'" DB2="'.$db.'" T2="'.$T2.'" F2="'.$F2.'"></root>');
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}
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?>
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