É possível usar um nó Compute para criar uma nova mensagem de saída uncluindo novos campos em uma mensagem de entrada existente.
Este tópico fornece código ESQL de exemplo para um nó Compute que cria uma nova mensagem de saída baseada na mensagem de entrada, na qual são incluídos vários campos adicionais.
<TestCase description="This is my TestCase">
<Identifier>ES03B305_T1</Identifier>
<Sport>Football</Sport>
<Date>01/02/2000</Date>
<Type>LEAGUE</Type>
</TestCase>
-- copiar cabeçalhos
DECLARE i INTEGER 1;
DECLARE numHeaders INTEGER CARDINALITY(InputRoot.*[]);
WHILE i < numHeaders DO
SET OutputRoot.*[i] = InputRoot.*[i];
SET i = i + 1;
END WHILE;
CREATE FIELD OutputRoot.XMLNS.TestCase.description TYPE NameValue VALUE 'This is my TestCase';
CREATE FIRSTCHILD OF OutputRoot.XMLNS.TestCase Domain('XMLNS') NAME 'Identifier'
VALUE InputRoot.XMLNS.TestCase.Identifier;
CREATE LASTCHILD OF OutputRoot.XMLNS.TestCase Domain('XMLNS') NAME 'Sport'
VALUE InputRoot.XMLNS.TestCase.Sport;
CREATE LASTCHILD OF OutputRoot.XMLNS.TestCase Domain('XMLNS') NAME 'Date'
VALUE InputRoot.XMLNS.TestCase.Date;
CREATE LASTCHILD OF OutputRoot.XMLNS.TestCase Domain('XMLNS') NAME 'Type'
VALUE InputRoot.XMLNS.TestCase.Type;
CREATE FIELD OutputRoot.XMLNS.TestCase.Division[1].Number TYPE NameValue
VALUE 'Premiership';
CREATE FIELD OutputRoot.XMLNS.TestCase.Division[1].Result[1].Number TYPE NameValue VALUE '1';
CREATE FIELD OutputRoot.XMLNS.TestCase.Division[1].Result[1].Home TYPE Name;
CREATE LASTCHILD OF OutputRoot.XMLNS.TestCase.Division[1].Result[1].Home NAME 'Team'
VALUE 'Liverpool' ;
CREATE LASTCHILD OF OutputRoot.XMLNS.TestCase.Division[1].Result[1].Home NAME 'Score'
VALUE '4';
CREATE FIELD OutputRoot.XMLNS.TestCase.Division[1].Result[1].Away TYPE Name;
CREATE LASTCHILD OF OutputRoot.XMLNS.TestCase.Division[1].Result[1].Away NAME 'Team'
VALUE 'Everton';
CREATE LASTCHILD OF OutputRoot.XMLNS.TestCase.Division[1].Result[1].Away NAME 'Score'
VALUE '0';
CREATE FIELD OutputRoot.XMLNS.TestCase.Division[1].Result[2].Number TYPE NameValue VALUE '2';
CREATE FIELD OutputRoot.XMLNS.TestCase.Division[1].Result[2].Home TYPE Name;
CREATE LASTCHILD OF OutputRoot.XMLNS.TestCase.Division[1].Result[2].Home NAME 'Team'
VALUE 'Manchester United';
CREATE LASTCHILD OF OutputRoot.XMLNS.TestCase.Division[1].Result[2].Home NAME 'Score'
VALUE '2';
CREATE FIELD OutputRoot.XMLNS.TestCase.Division[1].Result[2].Away TYPE Name;
CREATE LASTCHILD OF OutputRoot.XMLNS.TestCase.Division[1].Result[2].Away NAME 'Team'
VALUE 'Arsenal';
CREATE LASTCHILD OF OutputRoot.XMLNS.TestCase.Division[1].Result[2].Away NAME 'Score'
VALUE '3';
CREATE FIELD OutputRoot.XMLNS.TestCase.Division[2].Number TYPE NameValue
VALUE '2';
CREATE FIELD OutputRoot.XMLNS.TestCase.Division[2].Result[1].Number TYPE NameValue
VALUE '1';
CREATE FIELD OutputRoot.XMLNS.TestCase.Division[2].Result[1].Home TYPE Name;
CREATE LASTCHILD OF OutputRoot.XMLNS.TestCase.Division[2].Result[1].Home NAME 'Team'
VALUE 'Port Vale';
CREATE LASTCHILD OF OutputRoot.XMLNS.TestCase.Division[2].Result[1].Home NAME 'Score'
VALUE '9' ;
CREATE FIELD OutputRoot.XMLNS.TestCase.Division[2].Result[1].Away TYPE Name;
CREATE LASTCHILD OF OutputRoot.XMLNS.TestCase.Division[2].Result[1].Away NAME 'Team'
VALUE 'Brentford';
CREATE LASTCHILD OF OutputRoot.XMLNS.TestCase.Division[2].Result[1].Away NAME 'Score'
VALUE '5';
<TestCase description="This is my TestCase">
<Identifier>ES03B305_T1</Identifier>
<Sport>Football</Sport>
<Date>01/02/2000</Date>
<Type>LEAGUE</Type>
<Division Number="Premiership">
<Result Number="1">
<Home>
<Team>Liverpool</Team>
<Score>4</Score>
</Home>
<Away>
<Team>Everton</Team>
<Score>0</Score>
</Away>
</Result>
<Result Number="2">
<Home>
<Team>Manchester United</Team>
<Score>2</Score>
</Home>
<Away>
<Team>Arsenal</Team>
<Score>3</Score>
</Away>
</Result>
</Division>
<Division Number="2">
<Result Number="1">
<Home>
<Team>Port Vale</Team>
<Score>9</Score>
</Home>
<Away>
<Team>Brentford</Team>
<Score>5</Score>
</Away>
</Result>
</Division>
</TestCase>