Examples with KStreamHolder io.confluent.ksql.execution.plan.KStreamHolder used on opensource projects

Example 6 with KStreamHolder

use of io.confluent.ksql.execution.plan.KStreamHolder in project ksql by confluentinc.

the class StreamGroupByBuilderBase method build.

public <K> KGroupedStreamHolder build(final KStreamHolder<K> stream, final QueryContext queryContext, final Formats formats, final List<Expression> groupByExpressions) {
    final LogicalSchema sourceSchema = stream.getSchema();
    final List<CompiledExpression> groupBy = CodeGenRunner.compileExpressions(groupByExpressions.stream(), "Group By", sourceSchema, buildContext.getKsqlConfig(), buildContext.getFunctionRegistry());
    final ProcessingLogger logger = buildContext.getProcessingLogger(queryContext);
    final GroupByParams params = paramsFactory.build(sourceSchema, groupBy, logger);
    final Grouped<GenericKey, GenericRow> grouped = buildGrouped(formats, params.getSchema(), queryContext, buildContext, groupedFactory);
    final KGroupedStream<GenericKey, GenericRow> groupedStream = stream.getStream().filter((k, v) -> v != null).groupBy((k, v) -> params.getMapper().apply(v), grouped);
    return KGroupedStreamHolder.of(groupedStream, params.getSchema());
}