lib/Doctrine/Export/Sqlite.php

@@ -180,7 +180,19 @@ class Doctrine_Export_Sqlite extends Doctrine_Export
         }
 
         $name  = $this->conn->quoteIdentifier($name, true);
-        $query[] = 'CREATE TABLE ' . $name . ' (' . $queryFields . ')';
+        $sql   = 'CREATE TABLE ' . $name . ' (' . $queryFields . ')';
+
+        if ($check = $this->getCheckDeclaration($fields)) {
+            $sql .= ', ' . $check;
+        }
+
+        if (isset($options['checks']) && $check = $this->getCheckDeclaration($options['checks'])) {
+            $sql .= ', ' . $check;
+        }
+
+        $sql .= ')';
+
+        $query[] = $sql;
 
         if (isset($options['indexes']) && ! empty($options['indexes'])) {
             foreach ($options['indexes'] as $index => $definition) {

lib/Doctrine/Table.php

@@ -121,7 +121,9 @@ class Doctrine_Table extends Doctrine_Configurable implements Countable
      *
      *      -- foreignKeys                  the foreign keys of this table
      *
-     *      -- collation
+     *      -- checks                       the check constraints of this table, eg. 'price > dicounted_price'
+     *
+     *      -- collation                    collation attribute
      *
      *      -- indexes                      the index definitions of this table
      *
@@ -468,6 +470,23 @@ class Doctrine_Table extends Doctrine_Configurable implements Countable
     {
         $this->options['foreignKeys'][] = $definition;
     }
+    /**
+     * addCheckConstraint
+     * 
+     * adds a check constraint to this table
+     *
+     * @return void
+     */
+    public function addCheckConstraint($definition, $name)
+    {
+    	if (is_string($name)) {
+            $this->options['checks'][$name] = $definition;
+        } else {
+            $this->options['checks'][] = $definition;
+        }
+        
+        return $this;
+    }
     /**
      * addIndex
      *