Message Mapping-Generating Headers and corresponding Line items in 1 file

Question

Hi,
I am working on JDBC to File scenario.
There is a staging table in SQL Server. XI polls the table every 20 secs and picks up all the data with flag = 0. After fetching the records it sets the flag to 1 so that the same data do not get fetched the next time.
The record have one Bill No and there can be more than 1 line items associated with that bill no.
The target structure is as follows:
Record          1
   Bill No          0...unbounded
   Line item     1
        Line items    0...unbounded
Now the requirement is to generate a file with header and all the corresponding line items below it.  That is one file can have many headers but all the line items should succeed its corresponding header.
I have written a UDF to generate the same.
For Bill No.:
Bill No -> RemoveContext -> Sort - > UDF -> SplitBy Value -> CollapseContext
UDF just removes the duplicate Bill No and generates the list.
Now the issue is if Bill No as per source is 8,4,1,3 then the ones getting generated in the target str is in the same order as it is in source that is 8,4,1,3. But  I want this in the sorted order ie. 1,3,4,8. Althoug I have used Sort func, its not getting generated.
Please help.

Answer 1

chk this:
BillNo-removeContext--sort--splitByValue(valuechange)---collapse Context---Record
BillNo-removeContext--sort--splitByValue(valuechange)---collapse Context---splitbyvalue(each Value)---BillNo(Target)
BillNo-removeContext---------------------------
                            -------------------------- SortByKey----------FormatByExample(2nd argument mapping below)---UDF2---Line Item
BillSerailNo(set its context to Row)--UDF1---removeContext--
BillNo-removeContext--sort--splitByValue(valuechange)----2nd argument mapping of "formatbyexample"
BillNo-removeContext---
                            --------SortByKey----FormatByExample(2nd argument)---UDF2--splitbyvalue(each value)-Bill Serial No
BillSerailNo(set its context to Row)----UDF1---removeContext-----
BillNo-removeContext--sort--splitByValue(valuechange)----2nd argument mapping of "formatByExample"
udf1: Input will be var1
Execution type: all values of a context
String a="";
for(int i=0;i<var1.length;i++)
a = a + var1<i>+ ";";
int b= a.length();
result.addValue(a.substring(0,b-1));
UDF2: input will be var1
Execution type: all values of a context
for(int b=0;b<var1.length;b++)
String [] a = var1<b>.split(";");
for(int i=0;i<a.length;i++)
result.addValue(a<i>);
Input:
<MT_Source>
   <ROW>
        <Bill_No>8</Bill_No>
         <LineItems>
            <BillSerailNo>second</BillSerailNo>
           <LineItems>
          <LineItems>
            <BillSerailNo>second1</BillSerailNo>
         </LineItems>
     </Row>
      <ROW>
        <Bill_No>5</Bill_No>
         <LineItems>
            <BillSerailNo>First</BillSerailNo>
           <LineItems>
          <LineItems>
            <BillSerailNo>First1</BillSerailNo>
         </LineItems>
     </Row>
<ROW>
<Bill_No>8</Bill_No>
         <LineItems>
            <BillSerailNo>Third</BillSerailNo>
           <LineItems>
          <LineItems>
            <BillSerailNo>Third1</BillSerailNo>
         </LineItems>
     </Row>
<MT_Source>
Target:
<MT_Target>
    <Record>
        <Bill_No>5</Bill_No>
         <LineItems>
            <BillSerailNo>First</BillSerailNo>
           <LineItems>
          <LineItems>
            <BillSerailNo>First1</BillSerailNo>
         </LineItems>
   </Record>
   <Record>
       <Bill_No>8</Bill_No>
         <LineItems>
            <BillSerailNo>second</BillSerailNo>
           <LineItems>
          <LineItems>
            <BillSerailNo>second1</BillSerailNo>
         </LineItems>
         <LineItems>
            <BillSerailNo>Third</BillSerailNo>
           <LineItems>
          <LineItems>
            <BillSerailNo>Third1</BillSerailNo>
         </LineItems>
       </Record>
    <MT_1>