How to use

build8

method

in

org.activityinfo.store.query.server.columns.CompactingEnumColumnBuilder

@VisibleForTesting
ColumnView build() {
  if(labels.length < DiscreteStringColumnView8.MAX_COUNT) {
    return build8();
  } else {
    return build32();
  }
}

@Test
public void buildCompact() {
  EnumItem a = new EnumItem(ResourceId.valueOf("a"), "Enumerated Item A");
  EnumItem b = new EnumItem(ResourceId.valueOf("b"), "Enumerated Item B");
  EnumItem c = new EnumItem(ResourceId.valueOf("c"), "Enumerated Item C");
  EnumType enumType = new EnumType(Cardinality.SINGLE, a, b, c);
  CompactingEnumColumnBuilder builder = new CompactingEnumColumnBuilder(new PendingSlot<ColumnView>(), enumType);
  for (int i = 0; i < 13; i++) {
    builder.onNext(new EnumValue(a.getId()));
    builder.onNext(new EnumValue(b.getId()));
    builder.onNext(new EnumValue(c.getId()));
    builder.onNext(null);
  }
  ColumnView column8 = builder.build8();
  ColumnView column32 = builder.build32();
  for (int i = 0; i < column32.numRows(); i++) {
    if (!Objects.equals(column8.getString(i), column32.getString(i))) {
      throw new AssertionError("Vectors not equal at index " + i);
    }
  }
  assertThat(builder.build(), instanceOf(DiscreteStringColumnView8.class));
}