104      * @param string $colname may contain an alias
106     public function addColumn($colname)  argument
108         if ($this->processWildcard($colname)) return; // wildcard?
109         if ($colname[0] == '-') { // remove column from previous wildcard lookup
110             $colname = substr($colname, 1);
112                 if ($col->getLabel() === $colname) unset($this->columns[$key]);
117         $col = $this->findColumn($colname);
128      * @param string $colname may contain an alias
132     public function addSort($colname, $asc = true, $nc = true)  argument
134         $col = $this->findColumn($colname);
163      * @param string $colname may contain an alias
168     public function addFilter($colname, $value, $comp, $op = 'OR')  argument
170         $filter = $this->createFilter($colname, $value, $comp, $op);
177      * @param string $colname may contain an alias
182     public function addDynamicFilter($colname, $value, $comp, $op = 'OR')  argument
184         $filter = $this->createFilter($colname, $value, $comp, $op);
191      * @param string $colname may contain an alias
197     protected function createFilter($colname, $value, $comp, $op = 'OR')  argument
213         $col = $this->findColumn($colname);
538      * @param string $colname
541     protected function processWildcard($colname)  argument
543         [$colname, $table] = $this->resolveColumn($colname);
544         if ($colname !== '*') return false;
566     protected function resolveColumn($colname)  argument
571         [$table, $colname] = sexplode('.', $colname, 2, '');
572         if (!$colname) {
573             $colname = $table;
580         if (!$colname) throw new StructException('nocolname');
582         return [$colname, $table];
588      * @param string $colname may contain an alias
591     public function findColumn($colname, $strict = false)  argument
597         if ($colname == '%pageid%') {
600         if ($colname == '%title%') {
603         if ($colname == '%lastupdate%') {
606         if ($colname == '%lasteditor%') {
609         if ($colname == '%lastsummary%') {
612         if ($colname == '%rowid%') {
615         if ($colname == '%published%') {
619         [$colname, $table] = $this->resolveColumn($colname);
640             $col = $schema->findColumn($colname);