boolean value parsing added

lib/Doctrine/DataDict.php

@@ -73,4 +73,22 @@ class Doctrine_DataDict extends Doctrine_Connection_Module
 
         return $change;
     }
+    /**
+     * parseBoolean
+     * parses a literal boolean value and returns 
+     * proper sql equivalent
+     *
+     * @param string $value     boolean value to be parsed
+     * @return string           parsed boolean value
+     */
+    public function parseBoolean($value)
+    {
+        // parse booleans
+        if ($value == 'true') {
+            $value = 1;
+        } elseif ($value == 'false') {
+            $value = 0;
+        }
+        return $value;
+    }
 }

lib/Doctrine/DataDict/Pgsql.php

@@ -602,4 +602,16 @@ class Doctrine_DataDict_Pgsql extends Doctrine_DataDict
         $name = $this->conn->quoteIdentifier($name, true);
         return $name . ' ' . $this->getNativeDeclaration($field) . $default . $notnull;
     }
+    /**
+     * parseBoolean
+     * parses a literal boolean value and returns 
+     * proper sql equivalent
+     *
+     * @param string $value     boolean value to be parsed
+     * @return string           parsed boolean value
+     */
+    public function parseBoolean($value)
+    {
+        return $value;
+    }
 }