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

diff --git a/lib/pq/Query/Expressible.php b/lib/pq/Query/Expressible.php
new file mode 100644 (file)
index 0000000..ffcf7c2
--- /dev/null
+++ b/lib/pq/Query/Expressible.php
@@ -0,0 +1,72 @@
+<?php
+
+namespace pq\Query;
+
+class Expressible implements ExpressibleInterface
+{
+       /**
+        * @var mixed
+        */
+       protected $data;
+       
+       function __construct($data) {
+               $this->data = $data;
+       }
+       
+       /**
+        * Get value as string
+        * @return string
+        */
+       function __toString() {
+               return (string) $this->data;
+       }
+       
+       /**
+        * Test whether the value is an unevaluated expression
+        * @return bool
+        */
+       function isExpr() {
+               return $this->data instanceof Expr;
+       }
+
+       /**
+        * Get value
+        * @return mixed
+        */
+       function get() {
+               return $this->data;
+       }
+       
+       /**
+        * Set the value
+        * @param mixed $data
+        * @return \pq\Query\Expressible
+        */
+       function set($data) {
+               $this->data = $data;
+               return $this;
+       }
+       
+       /**
+        * Modify the data
+        * @param mixed $data
+        * @param string $op a specific operator
+        * @return \pq\Query\Expressible
+        */
+       function mod($data, $op = null) {
+               if (!($this->data instanceof Expr)) {
+                       $this->data = new Expr($this->name);
+               }
+               
+               if ($data instanceof Expr) {
+                       $this->data->add($data);
+               } elseif (!isset($op) && is_numeric($data)) {
+                       $this->data->add(new Expr("+ $data"));
+               } else {
+                       $data = $this->row->getTable()->getConnection()->quote($data);
+                       $this->data->add(new Expr("%s %s", isset($op) ? $op : "||", $data));
+               }
+               
+               return $this;
+       }               
+}
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