mule数据编织条件检查循环

Question

我有一个要求去做下面的事情

1)如果addressline4存在，则提取addressline4并与Addressline1连接2)如果addressline4不存在而addressline3存在，则提取addressline3并与Addressline1连接3)如果addressline4不存在，则提取addressline2并与Addressline1连接，如果addressline3不存在而addressline2存在4)仅提取Addressline1，其余均为空

我已经尝试了下面的一些东西，但似乎不工作，高度感谢任何帮助这一点。另外，我需要将street的字符数限制为40：

street: flowVars.addressLine1 ++‘’++ flowVars.addressLine4 when flowVars.addressLine4 !='‘otherwise flowVars.addressLine1 ++’‘++ flowVars.addressLine3 when flowVars.addressLine3 !='’otherwise flowVars.addressLine1 ++‘’++ flowVars.addressLine2 when flowVars.addressLine2 !='‘otherwise flowVars.addressLine1

Answer 1

我想你的订单刚刚取消了。

试试这个：

t: flowVars.addressLine1 ++ ' ' ++ flowVars.addressLine2 when flowVars.addressLine2 !='' otherwise flowVars.addressLine1 ++ ' ' ++ flowVars.addressLine3 when flowVars.addressLine3 !='' otherwise flowVars.addressLine1 ++ ' ' ++ flowVars.addressLine4 when flowVars.addressLine4 !='' otherwise flowVars.addressLine1