PHP xmldb_field::setSequence方法代码示例

 /**
  * 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
     // Get the dir containing the file
     $dirpath = required_param('dir', PARAM_PATH);
     $dirpath = $CFG->dirroot . $dirpath;
     // Get the correct dirs
     if (!empty($XMLDB->dbdirs)) {
         $dbdir =& $XMLDB->dbdirs[$dirpath];
     } else {
         return false;
     }
     if (!empty($XMLDB->editeddirs)) {
         $editeddir =& $XMLDB->editeddirs[$dirpath];
         $structure =& $editeddir->xml_file->getStructure();
     }
     // If the changeme table exists, just get it and continue
     $changeme_exists = false;
     if ($tables =& $structure->getTables()) {
         if ($table =& $structure->getTable('changeme')) {
             $changeme_exists = true;
         }
     }
     if (!$changeme_exists) {
         // Lets create the table
         $field = new xmldb_field('id');
         $field->setType(XMLDB_TYPE_INTEGER);
         $field->setLength(10);
         $field->setNotNull(true);
         $field->setUnsigned(true);
         $field->setSequence(true);
         $field->setLoaded(true);
         $field->setChanged(true);
         $key = new xmldb_key('primary');
         $key->setType(XMLDB_KEY_PRIMARY);
         $key->setFields(array('id'));
         $key->setLoaded(true);
         $key->setChanged(true);
         $table = new xmldb_table('changeme');
         $table->setComment('Default comment for the table, please edit me');
         $table->addField($field);
         $table->addKey($key);
         // Finally, add the whole retrofitted table to the structure
         // in the place specified
         $structure->addTable($table);
     }
     // Launch postaction if exists (leave this here!)
     if ($this->getPostAction() && $result) {
         return $this->launch($this->getPostAction());
     }
     // Return ok if arrived here
     return $result;
 }

//.........这里部分代码省略.........
         if (!(empty($default) || is_numeric($default) && !empty($default))) {
             $errors[] = $this->str['defaultincorrect'];
         }
     }
     /// Char checks
     if ($type == XMLDB_TYPE_CHAR) {
         if (!(is_numeric($length) && !empty($length) && intval($length) == floatval($length) && $length > 0 && $length <= 255)) {
             $errors[] = $this->str['charincorrectlength'];
         }
         if ($default !== NULL && $default !== '') {
             if (substr($default, 0, 1) == "'" || substr($default, -1, 1) == "'") {
                 $errors[] = $this->str['defaultincorrect'];
             }
         }
     }
     /// Text checks
     if ($type == XMLDB_TYPE_TEXT) {
         if ($length != 'small' && $length != 'medium' && $length != 'big') {
             $errors[] = $this->str['textincorrectlength'];
         }
         if ($default !== NULL && $default !== '') {
             if (substr($default, 0, 1) == "'" || substr($default, -1, 1) == "'") {
                 $errors[] = $this->str['defaultincorrect'];
             }
         }
     }
     /// Binary checks
     if ($type == XMLDB_TYPE_BINARY) {
         if ($length != 'small' && $length != 'medium' && $length != 'big') {
             $errors[] = $this->str['binaryincorrectlength'];
         }
     }
     if (!empty($errors)) {
         $tempfield = new xmldb_field($name);
         $tempfield->setType($type);
         $tempfield->setLength($length);
         $tempfield->setDecimals($decimals);
         $tempfield->setUnsigned($unsigned);
         $tempfield->setNotNull($notnull);
         $tempfield->setSequence($sequence);
         $tempfield->setDefault($default);
         /// 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>' . $tempfield->readableInfo() . '</p>', 'index.php?action=edit_field&amp;field=' . $field->getName() . '&amp;table=' . $table->getName() . '&amp;dir=' . urlencode(str_replace($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 ($fieldparam != $name) {
             $field->setName($name);
             if ($field->getPrevious()) {
                 $prev =& $table->getField($field->getPrevious());
                 $prev->setNext($name);
                 $prev->setChanged(true);
             }
             if ($field->getNext()) {
                 $next =& $table->getField($field->getNext());
                 $next->setPrevious($name);
                 $next->setChanged(true);
             }
         }
         /// Set comment
         $field->setComment($comment);
         /// Set the rest of fields
         $field->setType($type);
         $field->setLength($length);
         $field->setDecimals($decimals);
         $field->setUnsigned($unsigned);
         $field->setNotNull($notnull);
         $field->setSequence($sequence);
         $field->setDefault($default);
         /// If the hash has changed from the old one, change the version
         /// and mark the structure as changed
         $field->calculateHash(true);
         if ($oldhash != $field->getHash()) {
             $field->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;
 }