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lib/symfony/vendor/creole/drivers/sqlite/SQLiteResultSet.php

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+<?php
+/*
+ *  $Id: SQLiteResultSet.php,v 1.9 2004/11/29 13:41:24 micha 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>.
+ */
+ 
+require_once 'creole/ResultSet.php';
+require_once 'creole/common/ResultSetCommon.php';
+
+/**
+ * SQLite implementation of ResultSet class.
+ *
+ * SQLite supports OFFSET / LIMIT natively; this means that no adjustments or checking
+ * are performed.  We will assume that if the lmitSQL() operation failed that an
+ * exception was thrown, and that OFFSET/LIMIT will never be emulated for SQLite.
+ * 
+ * @author    Hans Lellelid <hans@xmpl.org>
+ * @version   $Revision: 1.9 $
+ * @package   creole.drivers.sqlite
+ */
+class SQLiteResultSet extends ResultSetCommon implements ResultSet {
+    
+    /**
+     * Gets optimized SQLiteResultSetIterator.
+     * @return SQLiteResultSetIterator
+     */
+    public function getIterator()
+    {
+        require_once 'creole/drivers/sqlite/SQLiteResultSetIterator.php';
+        return new SQLiteResultSetIterator($this);
+    }
+           
+    /**
+     * @see ResultSet::seek()
+     */ 
+    public function seek($rownum)
+    {
+        // MySQL rows start w/ 0, but this works, because we are
+        // looking to move the position _before_ the next desired position
+         if (!@sqlite_seek($this->result, $rownum)) {
+                return false;
+        }
+        $this->cursorPos = $rownum;
+        return true;
+    }
+    
+    /**
+     * @see ResultSet::next()
+     */ 
+    function next()
+    {
+        $this->fields = sqlite_fetch_array($this->result, $this->fetchmode); // (ResultSet::FETCHMODE_NUM = SQLITE_NUM, etc.)
+           if (!$this->fields) {
+            $errno = sqlite_last_error($this->conn->getResource());
+            if (!$errno) {
+                // We've advanced beyond end of recordset.
+                $this->afterLast();
+                return false;
+            } else {
+                throw new SQLException("Error fetching result", sqlite_error_string($errno));
+            }
+        }
+        
+        // Advance cursor position
+        $this->cursorPos++;
+        return true;
+    }
+
+    /**
+     * @see ResultSet::getRecordCount()
+     */
+    public function getRecordCount()
+    {
+        $rows = @sqlite_num_rows($this->result);
+        if ($rows === null) {
+            throw new SQLException("Error fetching num rows", sqlite_error_string(sqlite_last_error($this->conn->getResource())));
+        }
+        return (int) $rows;
+    }    
+
+    /**
+     * Performs sqlite_udf_decode_binary on binary data.
+     * @see ResultSet::getBlob()
+     */
+    public function getBlob($column) 
+    {
+        $idx = (is_int($column) ? $column - 1 : $column);
+        if (!array_key_exists($idx, $this->fields)) { throw new SQLException("Invalid resultset column: " . $column); }
+        if ($this->fields[$idx] === null) { return null; }
+        require_once 'creole/util/Blob.php';
+        $b = new Blob();
+        $b->setContents(sqlite_udf_decode_binary($this->fields[$idx]));
+        return $b;
+    }    
+    
+    /**
+     * Simply empties array as there is no result free method for sqlite.
+     * @see ResultSet::close()
+     */
+    public function close()
+    {
+        $this->fields = array();
+        $this->result = null;
+    }
+}