cs FluentInterface

FluentInterface/SQL.php

@@ -11,56 +11,78 @@ namespace DesignPatterns\FluentInterface;
  * Examples:
  * - Doctrine2's QueryBuilder works something like that example class below
  * - PHPUnit uses fluent interfaces to build mock objects
- * - Yii Framework: CDbCommand and CActiveRecord use this pattern too
- *
+ * - Yii Framework: CDbCommand and CActiveRecord use this pattern, too
  */
 class SQL
 {
-    protected $_fields = array();
-    protected $_from = array();
-    protected $_where = array();
+    /**
+     * @var array
+     */
+    protected $fields = array();
 
     /**
+     * @var array
+     */
+    protected $from = array();
+
+    /**
+     * @var array
+     */
+    protected $where = array();
+
+    /**
+     * adds select fields
      *
      * @param array $fields
+     *
      * @return SQL
      */
     public function select(array $fields = array())
     {
-        $this->_fields = $fields;
+        $this->fields = $fields;
+
         return $this;
     }
 
     /**
+     * adds a FROM clause
      *
      * @param string $table
      * @param string $alias
+     *
      * @return SQL
      */
     public function from($table, $alias)
     {
-        $this->_from[] = $table . ' AS ' . $alias;
+        $this->from[] = $table . ' AS ' . $alias;
+
         return $this;
     }
 
     /**
+     * adds a WHERE condition
+     *
      * @param string $condition
+     *
      * @return SQL
      */
     public function where($condition)
     {
-        $this->_where[] = $condition;
+        $this->where[] = $condition;
+
         return $this;
     }
-    
+
     /**
      * Gets the query, just an example of building a query, 
      * no check on consistency
+     *
+     * @return string
      */
     public function getQuery()
     {
-        return 'SELECT ' . implode(',', $this->_fields) 
-                . ' FROM ' . implode(',', $this->_from)
-                . ' WHERE ' . implode(' AND ', $this->_where);
+        return 'SELECT ' . implode(',', $this->fields)
+                . ' FROM ' . implode(',', $this->from)
+                . ' WHERE ' . implode(' AND ', $this->where);
     }
 }