AccelerationAnalyzer.java 文件源码

protected Iterable<StatColumn> getStatColumnsPerField(final RelDataTypeField field) {
  final RelDataTypeFamily family = field.getType().getFamily();
  final Collection<StatType> dims = DIMENSIONS.get(family);
  if (dims.isEmpty()) {
    return ImmutableList.of();
  }

  return FluentIterable.from(dims)
      .transform(new Function<StatType, StatColumn>() {
        @Nullable
        @Override
        public StatColumn apply(@Nullable final StatType type) {
          return new StatColumn(type, field);
        }
      });
}