/admin/xmldb/actions/edit_index_save/edit_index_save.class.php
PHP | 226 lines | 137 code | 26 blank | 63 comment | 28 complexity | 582bbecb5602da7f2d96bbece2f301e6 MD5 | raw file
- <?php // $Id$
- ///////////////////////////////////////////////////////////////////////////
- // //
- // NOTICE OF COPYRIGHT //
- // //
- // Moodle - Modular Object-Oriented Dynamic Learning Environment //
- // http://moodle.com //
- // //
- // Copyright (C) 1999 onwards Martin Dougiamas http://dougiamas.com //
- // (C) 2001-3001 Eloy Lafuente (stronk7) http://contiento.com //
- // //
- // This program is free software; you can redistribute it and/or modify //
- // it under the terms of the GNU General Public License as published by //
- // the Free Software Foundation; either version 2 of the License, or //
- // (at your option) any later version. //
- // //
- // This program is distributed in the hope that it will be useful, //
- // but WITHOUT ANY WARRANTY; without even the implied warranty of //
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
- // GNU General Public License for more details: //
- // //
- // http://www.gnu.org/copyleft/gpl.html //
- // //
- ///////////////////////////////////////////////////////////////////////////
- /// This class will save the changes performed to one index
- class edit_index_save extends XMLDBAction {
- /**
- * Init method, every subclass will have its own
- */
- function init() {
- parent::init();
- /// Set own custom attributes
- /// Get needed strings
- $this->loadStrings(array(
- 'indexnameempty' => 'xmldb',
- 'incorrectindexname' => 'xmldb',
- 'duplicateindexname' => 'xmldb',
- 'nofieldsspecified' => 'xmldb',
- 'duplicatefieldsused' => 'xmldb',
- 'fieldsnotintable' => 'xmldb',
- 'fieldsusedinkey' => 'xmldb',
- 'fieldsusedinindex' => 'xmldb',
- 'administration' => ''
- ));
- }
- /**
- * Invoke method, every class will have its own
- * returns true/false on completion, setting both
- * errormsg and output as necessary
- */
- function invoke() {
- parent::invoke();
- $result = true;
- /// Set own core attributes
- $this->does_generate = ACTION_NONE;
- //$this->does_generate = ACTION_GENERATE_HTML;
- /// These are always here
- global $CFG, $XMLDB;
- /// Do the job, setting result as needed
- if (!data_submitted('nomatch')) { ///Basic prevention
- error('Wrong action call');
- }
- /// Get parameters
- $dirpath = required_param('dir', PARAM_PATH);
- $dirpath = $CFG->dirroot . stripslashes_safe($dirpath);
- $tableparam = strtolower(required_param('table', PARAM_PATH));
- $indexparam = strtolower(required_param('index', PARAM_PATH));
- $name = trim(strtolower(optional_param('name', $indexparam, PARAM_PATH)));
- $comment = required_param('comment', PARAM_CLEAN);
- $comment = trim(stripslashes_safe($comment));
- $unique = required_param('unique', PARAM_INT);
- $fields = required_param('fields', PARAM_CLEAN);
- $fields = str_replace(' ', '', trim(strtolower(stripslashes_safe($fields))));
- $editeddir =& $XMLDB->editeddirs[$dirpath];
- $structure =& $editeddir->xml_file->getStructure();
- $table =& $structure->getTable($tableparam);
- $index =& $table->getIndex($indexparam);
- $oldhash = $index->getHash();
- $errors = array(); /// To store all the errors found
- /// Perform some checks
- /// Check empty name
- if (empty($name)) {
- $errors[] = $this->str['indexnameempty'];
- }
- /// Check incorrect name
- if ($name == 'changeme') {
- $errors[] = $this->str['incorrectindexname'];
- }
- /// Check duplicate name
- if ($indexparam != $name && $table->getIndex($name)) {
- $errors[] = $this->str['duplicateindexname'];
- }
- $fieldsarr = explode(',', $fields);
- /// Check the fields isn't empty
- if (empty($fieldsarr[0])) {
- $errors[] = $this->str['nofieldsspecified'];
- } else {
- /// Check that there aren't duplicate column names
- $uniquearr = array_unique($fieldsarr);
- if (count($fieldsarr) != count($uniquearr)) {
- $errors[] = $this->str['duplicatefieldsused'];
- }
- /// Check that all the fields in belong to the table
- foreach ($fieldsarr as $field) {
- if (!$table->getField($field)) {
- $errors[] = $this->str['fieldsnotintable'];
- break;
- }
- }
- /// Check that there isn't any key using exactly the same fields
- $tablekeys = $table->getKeys();
- if ($tablekeys) {
- foreach ($tablekeys as $tablekey) {
- $keyfieldsarr = $tablekey->getFields();
- /// Compare both arrays, looking for diferences
- $diferences = array_merge(array_diff($fieldsarr, $keyfieldsarr), array_diff($keyfieldsarr, $fieldsarr));
- if (empty($diferences)) {
- $errors[] = $this->str['fieldsusedinkey'];
- break;
- }
- }
- }
- /// Check that there isn't any index using exactlt the same fields
- $tableindexes = $table->getIndexes();
- if ($tableindexes) {
- foreach ($tableindexes as $tableindex) {
- /// Skip checking against itself
- if ($indexparam == $tableindex->getName()) {
- continue;
- }
- $indexfieldsarr = $tableindex->getFields();
- /// Compare both arrays, looking for diferences
- $diferences = array_merge(array_diff($fieldsarr, $indexfieldsarr), array_diff($indexfieldsarr, $fieldsarr));
- if (empty($diferences)) {
- $errors[] = $this->str['fieldsusedinindex'];
- break;
- }
- }
- }
- }
- if (!empty($errors)) {
- $tempindex = new XMLDBIndex($name);
- $tempindex->setUnique($unique);
- $tempindex->setFields($fieldsarr);
- /// Prepare the output
- $site = get_site();
- $navlinks = array();
- $navlinks[] = array('name' => $this->str['administration'], 'link' => '../index.php', 'type' => 'misc');
- $navlinks[] = array('name' => 'XMLDB', 'link' => 'index.php', 'type' => 'misc');
- $navigation = build_navigation($navlinks);
- print_header("$site->shortname: XMLDB", "$site->fullname", $navigation);
- notice ('<p>' .implode(', ', $errors) . '</p>
- <p>' . $tempindex->readableInfo(),
- 'index.php?action=edit_index&index=' .$index->getName() . '&table=' . $table->getName() . '&dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)));
- die; /// re-die :-P
- }
- /// Continue if we aren't under errors
- if (empty($errors)) {
- /// If there is one name change, do it, changing the prev and next
- /// atributes of the adjacent fields
- if ($indexparam != $name) {
- $index->setName($name);
- if ($index->getPrevious()) {
- $prev =& $table->getIndex($index->getPrevious());
- $prev->setNext($name);
- $prev->setChanged(true);
- }
- if ($index->getNext()) {
- $next =& $table->getIndex($index->getNext());
- $next->setPrevious($name);
- $next->setChanged(true);
- }
- }
- /// Set comment
- $index->setComment($comment);
- /// Set the rest of fields
- $index->setUnique($unique);
- $index->setFields($fieldsarr);
- /// If the hash has changed from the old one, change the version
- /// and mark the structure as changed
- $index->calculateHash(true);
- if ($oldhash != $index->getHash()) {
- $index->setChanged(true);
- $table->setChanged(true);
- /// Recalculate the structure hash
- $structure->calculateHash(true);
- $structure->setVersion(userdate(time(), '%Y%m%d', 99, false));
- /// Mark as changed
- $structure->setChanged(true);
- }
- /// Launch postaction if exists (leave this here!)
- if ($this->getPostAction() && $result) {
- return $this->launch($this->getPostAction());
- }
- }
- /// Return ok if arrived here
- return $result;
- }
- }
- ?>