任務：ESQL中字符串處理
1.繼續沿用上次的工程，注意修改兩個Label節點的Label Name為漢字形式，并改寫Compute節點的ESQL如下：
CREATE COMPUTE MODULE flow_Compute
CREATE FUNCTION Main() RETURNS BOOLEAN
BEGIN
DECLARE Address CHARACTER;
DECLARE Addresses CHARACTER InputRoot.XML.mail.address;
DECLARE I INTEGER 0;
DECLARE J INTEGER;
DECLARE LEN INTEGER LENGTH(Addresses);
WHILE (I<LEN) DO
SET OutputRoot = InputRoot;
SET J=I+1;
SET Address=SUBSTRING(Addresses FROM J FOR 2);
SET OutputLocalEnvironment.Destination.RouterList.DestinationData[1].labelName = Address;
PROPAGATE;
SET I=J+2;
END WHILE;
RETURN FALSE;
END;
END MODULE;
2.將以下文本傳入InQ：
<mail><id>0001</id><address>大連/上海</address></mail>
3.OutQ和OutQ1都將收到信息，如下圖顯示。
4.本例工程下載地址
http://www.aygfsteel.com/Files/heyang/InputOutputTest0919.rar-The End-