PHP xmldb_field::setChanged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->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;
 }

 /**
  * Add one field to the table, allowing to specify the desired  order
  * If it's not specified, then the field is added at the end
  * @param xmldb_field $field
  * @param xmldb_object $after
  * @return xmldb_field
  */
 public function addField($field, $after = null)
 {
     // Detect duplicates first
     if ($this->getField($field->getName())) {
         throw new coding_exception('Duplicate field ' . $field->getName() . ' specified in table ' . $this->getName());
     }
     // Calculate the previous and next fields
     $prevfield = null;
     $nextfield = null;
     if (!$after) {
         $allfields = $this->getFields();
         if (!empty($allfields)) {
             end($allfields);
             $prevfield = $allfields[key($allfields)];
         }
     } else {
         $prevfield = $this->getField($after);
     }
     if ($prevfield && $prevfield->getNext()) {
         $nextfield = $this->getField($prevfield->getNext());
     }
     // Set current field previous and next attributes
     if ($prevfield) {
         $field->setPrevious($prevfield->getName());
         $prevfield->setNext($field->getName());
     }
     if ($nextfield) {
         $field->setNext($nextfield->getName());
         $nextfield->setPrevious($field->getName());
     }
     // Some more attributes
     $field->setLoaded(true);
     $field->setChanged(true);
     // Add the new field
     $this->fields[] = $field;
     // Reorder the field
     $this->orderFields($this->fields);
     // Recalculate the hash
     $this->calculateHash(true);
     // We have one new field, so the table has changed
     $this->setChanged(true);
     return $field;
 }