Библиотека для cis, online, cms1

creole/drivers/sqlite/SQLiteResultSetIterator.php

@@ -0,0 +1,88 @@
+<?php
+/*
+ *  $Id: SQLiteResultSetIterator.php,v 1.6 2004/12/03 16:57:54 gamr Exp $
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the LGPL. For more information please see
+ * <http://creole.phpdb.org>.
+ */
+
+/**
+ * Optimized iterator for SQLite.
+ * 
+ * @author    Hans Lellelid <hans@xmpl.org>
+ * @version   $Revision: 1.6 $
+ * @package   creole.drivers.sqlite
+ */
+class SQLiteResultSetIterator implements Iterator {
+
+    private $result;
+    private $pos = 0;
+    private $fetchmode;
+    private $row_count;
+    
+    /**
+     * Construct the iterator.
+     * @param SQLiteResultSet $rs
+     */
+    public function __construct(SQLiteResultSet $rs)
+    {
+        $this->result = $rs->getResource();
+        $this->fetchmode = $rs->getFetchmode();
+	$this->row_count = $rs->getRecordCount();
+    }
+    
+    /**
+     * This method actually has no effect, since we do not rewind ResultSet for iteration.
+     */
+    function rewind()
+    {        
+        sqlite_rewind($this->result);
+    }
+    
+    function valid()
+    {
+	return ( $this->pos < $this->row_count );
+    }
+    
+    /**
+     * Returns the cursor position.  Note that this will not necessarily
+     * be 1 for the first row, since no rewind is performed at beginning
+     * of iteration.
+     * @return int
+     */
+    function key()
+    {
+        return $this->pos;
+    }
+    
+    /**
+     * Returns the row (assoc array) at current cursor pos.
+     * @return array
+     */
+    function current()
+    {
+       return sqlite_fetch_array($this->result, $this->fetchmode);
+    }
+    
+    /**
+     * Advances internal cursor pos.
+     */
+    function next()
+    {
+        $this->pos++;
+    }
+
+}