1 files changed, 53 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticMediaWiki/src/Connection/CallbackConnectionProvider.php b/www/wiki/extensions/SemanticMediaWiki/src/Connection/CallbackConnectionProvider.php
new file mode 100644
index 00000000..84d6a7fb
--- /dev/null
+++ b/www/wiki/extensions/SemanticMediaWiki/src/Connection/CallbackConnectionProvider.php
@@ -0,0 +1,53 @@
+<?php
+
+namespace SMW\Connection;
+
+/**
+ * @license GNU GPL v2+
+ * @since 3.0
+ *
+ * @author mwjames
+ */
+class CallbackConnectionProvider implements ConnectionProvider {
+
+	/**
+	 * @var callable
+	 */
+	private $callback;
+
+	/**
+	 * @var mixed
+	 */
+	private $connection;
+
+	/**
+	 * @since 3.0
+	 *
+	 * @param callable $callback
+	 */
+	public function __construct( callable $callback ) {
+		$this->callback = $callback;
+	}
+
+	/**
+	 * @since 3.0
+	 *
+	 * @return mixed
+	 */
+	public function getConnection() {
+
+		if ( $this->connection === null ) {
+			$this->connection = call_user_func( $this->callback );
+		}
+
+		return $this->connection;
+	}
+
+	/**
+	 * @since 3.0
+	 */
+	public function releaseConnection() {
+		$this->connection = null;
+	}
+
+}