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[m6w6/pq-gateway] / lib / pq / Query / ExpressibleInterface.php

diff --git a/lib/pq/Query/ExpressibleInterface.php b/lib/pq/Query/ExpressibleInterface.php
new file mode 100644 (file)
index 0000000..1009583
--- /dev/null
+++ b/lib/pq/Query/ExpressibleInterface.php
@@ -0,0 +1,40 @@
+<?php
+
+namespace pq\Query;
+
+interface ExpressibleInterface
+{
+       /**
+        * Get the contained value as string
+        * @return string
+        */
+       function __toString();
+       
+       /**
+        * Test whether we are an expression
+        * @return bool
+        */
+       function isExpr();
+       
+       /**
+        * Get the literal value or the expression
+        * @return mixed
+        */
+       function get();
+       
+       /**
+        * Set the contained value
+        * @param mixed $data
+        * @return \pq\Query\ExpressibleInterface
+        */
+       function set($data);
+       
+       /**
+        * Modify the data
+        * @param mixed $data
+        * @param string $op a specific operator
+        * @return \pq\Query\ExpressibleInterface
+        */
+       function mod($data, $op = null);
+
+}