Examples with LambdaFunction1Term io.confluent.ksql.execution.interpreter.terms.LambdaFunctionTerms.LambdaFunction1Term used on opensource projects

Example 1 with LambdaFunction1Term

use of io.confluent.ksql.execution.interpreter.terms.LambdaFunctionTerms.LambdaFunction1Term in project ksql by confluentinc.

the class TermCompiler method visitLambdaExpression.

@Override
public Term visitLambdaExpression(final LambdaFunctionCall lambdaFunctionCall, final Context context) {
    final Term lambdaBody = process(lambdaFunctionCall.getBody(), context);
    final ImmutableList.Builder<Pair<String, SqlType>> nameToType = ImmutableList.builder();
    for (final String lambdaArg : lambdaFunctionCall.getArguments()) {
        nameToType.add(Pair.of(lambdaArg, context.getLambdaSqlTypeMapping().get((lambdaArg))));
    }
    switch(lambdaFunctionCall.getArguments().size()) {
        case 1:
            return new LambdaFunction1Term(nameToType.build(), lambdaBody);
        case 2:
            return new LambdaFunction2Term(nameToType.build(), lambdaBody);
        case 3:
            return new LambdaFunction3Term(nameToType.build(), lambdaBody);
        default:
            throw new KsqlException("Interpreter only supports lambdas up to three arguments");
    }
}