1 files changed, 41 insertions, 0 deletions
diff --git a/engine/classes/WhereSetQueryComponent.php b/engine/classes/WhereSetQueryComponent.php
new file mode 100644
index 000000000..b5fe439a0
--- /dev/null
+++ b/engine/classes/WhereSetQueryComponent.php
@@ -0,0 +1,41 @@
+<?php
+/**
+ * @class WhereSetQueryComponent
+ * A where query that may contain other where queries (in brackets).
+ * @author Curverider Ltd
+ * @see Query
+ */
+class WhereSetQueryComponent extends WhereQueryComponent
+{
+	/**
+	 * Construct a subset of wheres.
+	 *
+	 * @param array $wheres An array of WhereQueryComponent
+	 * @param string $link_operator How this where clause links with the previous clause, eg. "and" "or"
+	 */
+	function __construct(array $wheres, $link_operator = "and")
+	{
+		$this->link_operator = sanitise_string($link_operator);
+		$this->wheres = $wheres;
+	}
+
+	public function toStringNoLink()
+	{
+		$cnt = 0;
+		$string = " (";
+		foreach ($this->wheres as $where) {
+			if (!($where instanceof WhereQueryComponent))
+				throw new DatabaseException(elgg_echo('DatabaseException:WhereSetNonQuery'));
+
+			if (!$cnt)
+				$string.= $where->toStringNoLink();
+			else
+				$string.=" $where ";
+
+			$cnt ++;
+		}
+		$string .= ")";
+
+		return $string;
+	}
+}