ORM对多种条件的判断处理

///<summary>

///根据查询条件生成SQL语句与SQL参数

///</summary>

protected System.String BuildConditionSql(Condition condition,IList outputParas)

{

　　if(condition==null)

　　{

　　　　return null;

　　}

　　else if(condition is SimpleCondition)

　　{

　　　　return BuildSimpleConditionSql(condition as SimpleCondition,outputParams);

　　}

　　else if(condition is ConditionSet)

　　{

　　　　return BuildConditionSetSql(condition as ConditionSet,outputParams);

　　}

　　else

　　{

　　　　return BuildCustomConditionSql(condition,outputParams);

　　}

}