1 files changed, 131 insertions, 0 deletions
diff --git a/framework/Collections/TDummyDataSource.php b/framework/Collections/TDummyDataSource.php
new file mode 100644
index 00000000..74f5f667
--- /dev/null
+++ b/framework/Collections/TDummyDataSource.php
@@ -0,0 +1,131 @@
+<?php
+/**
+ * TDummyDataSource, TDummyDataSourceIterator classes
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @link http://www.pradosoft.com/
+ * @copyright Copyright &copy; 2005 PradoSoft
+ * @license http://www.pradosoft.com/license/
+ * @version $Revision: $  $Date: $
+ * @package System.Collections
+ */
+
+/**
+ * TDummyDataSource class
+ *
+ * TDummyDataSource implements a dummy data collection with a specified number
+ * of dummy data items. You can traverse it using <b>foreach</b>
+ * PHP statement like the following,
+ * <code>
+ * foreach($dummyDataSource as $dataItem)
+ * </code>
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Revision: $  $Date: $
+ * @package System.Collections
+ * @since 3.0
+ */
+class TDummyDataSource extends TComponent implements IteratorAggregate
+{
+	private $_count;
+
+	public function __construct($count)
+	{
+		$this->_count=$count;
+	}
+
+	public function getCount()
+	{
+		return $this->_count;
+	}
+
+	/**
+	 * @return Iterator iterator
+	 */
+	public function getIterator()
+	{
+		return new TDummyDataSourceIterator($this->_count);
+	}
+}
+
+/**
+ * TDummyDataSourceIterator class
+ *
+ * TDummyDataSourceIterator implements Iterator interface.
+ *
+ * TDummyDataSourceIterator is used by {@link TDummyDataSource}.
+ * It allows TDummyDataSource to return a new iterator
+ * for traversing its dummy items.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @version $Revision: $  $Date: $
+ * @package System.Collections
+ * @since 3.0
+ */
+class TDummyDataSourceIterator implements Iterator
+{
+	private $_index;
+	private $_count;
+
+	/**
+	 * Constructor.
+	 * @param TList the data to be iterated through
+	 * @param integer start index
+	 * @param integer number of items to be iterated through
+	 */
+	public function __construct($count)
+	{
+		$this->_count=$count;
+		$this->_index=0;
+	}
+
+	/**
+	 * Rewinds internal array pointer.
+	 * This method is required by the interface Iterator.
+	 */
+	public function rewind()
+	{
+		$this->_index=0;
+	}
+
+	/**
+	 * Returns the key of the current array item.
+	 * This method is required by the interface Iterator.
+	 * @return integer the key of the current array item
+	 */
+	public function key()
+	{
+		return $this->_index;
+	}
+
+	/**
+	 * Returns the current array item.
+	 * This method is required by the interface Iterator.
+	 * @return mixed the current array item
+	 */
+	public function current()
+	{
+		return null;
+	}
+
+	/**
+	 * Moves the internal pointer to the next array item.
+	 * This method is required by the interface Iterator.
+	 */
+	public function next()
+	{
+		$this->_index++;
+	}
+
+	/**
+	 * Returns whether there is an item at current position.
+	 * This method is required by the interface Iterator.
+	 * @return boolean
+	 */
+	public function valid()
+	{
+		return $this->_index<$this->_count;
+	}
+}
+
+?>
+\ No newline at end of file