RevisionListBase.php

Go to the documentation of this file.

<?php
use Wikimedia\Rdbms\ResultWrapper;
use Wikimedia\Rdbms\IDatabase;
 
abstract class RevisionListBase extends ContextSource implements Iterator {
    public $title;
 
    protected $ids;
 
    protected $res;
 
    protected $current;
 
    function __construct( IContextSource $context, Title $title ) {
        $this->setContext( $context );
        $this->title = $title;
    }
 
    function filterByIds( array $ids ) {
        $this->ids = $ids;
    }
 
    public function getType() {
        return null;
    }
 
    protected function initCurrent() {
        $row = $this->res->current();
        if ( $row ) {
            $this->current = $this->newItem( $row );
        } else {
            $this->current = false;
        }
    }
 
    public function reset() {
        if ( !$this->res ) {
            $this->res = $this->doQuery( wfGetDB( DB_REPLICA ) );
        } else {
            $this->res->rewind();
        }
        $this->initCurrent();
        return $this->current;
    }
 
    public function rewind() {
        $this->reset();
    }
 
    public function current() {
        return $this->current;
    }
 
    public function next() {
        $this->res->next();
        $this->initCurrent();
        return $this->current;
    }
 
    public function key() {
        return $this->res ? $this->res->key() : 0;
    }
 
    public function valid() {
        return $this->res ? $this->res->valid() : false;
    }
 
    public function length() {
        if ( !$this->res ) {
            return 0;
        } else {
            return $this->res->numRows();
        }
    }
 
    abstract public function doQuery( $db );
 
    abstract public function newItem( $row );
}