Execute query only once in mapping

Question

Hi All,
I hav a scenario where I hav to Query a DB using all the child nodes. the source structure is as follows:
<root>
     <employee>     -
0..unbounded
          <empNo>
          <emdpName>
     </employee>
</root>
I hav to retrieve all the empNo and frame a query and shud execute the query only once and hav to retrieve the results and store it in a HashMap so that, i can map it to the target structure.
I had followed JAVIER PORRAS blog. but it seems to be not the executed one. Can any one suggest me how to do it. Any help wud b appreciated.
Thnx in Adv
Anil

Answer 1

Hi,
My requirement is something like this.
Source : External System
Target : BW
Source Structure:
<Root>
     <Emp>
          <Col1>
          <Name>
     </Emp>
     <Emp>
          <Col1>
          <Name>
     </Emp>
     <Emp>
          <Col1>
          <Name>
     </Emp>
     <Emp>
          <Col1>
          <Name>
     </Emp>
</Root>
I'm getting Data from External System in which a column (Col1) has to be replaced by some other column (Col2)
which exists in the DB. Col2 can b accessed using a query (select col1, col2 from myTable where col1 = x1 or x2 or x3 etc..). The values of X1, X2, X3 etc hav to be filled using the
Col1 values of each segment of the <Emp> in the source structure. The condition here is that, i shud execute the query only once for all the values of col1 to prevent the bottleneck.when i get the result, i hav to store it in a hashmap and use the result to map it to the target structure element by element.
This is my require ment. seems to b exactly the blog of JAVIER PORRAS. but the blog doesn't seem to b the executed one.Any help in resolving this.
Thnx
Anil