private Druids.SelectQueryBuilder newTestQuery() {
return Druids.newSelectQueryBuilder()
.dataSource(new TableDataSource(QueryRunnerTestHelper.dataSource))
.dimensionSpecs(DefaultDimensionSpec.toSpec(Arrays.<String>asList()))
.metrics(Arrays.<String>asList())
.intervals(QueryRunnerTestHelper.fullOnInterval)
.granularity(QueryRunnerTestHelper.allGran)
.pagingSpec(PagingSpec.newSpec(3))
.descending(descending);
}
@Test
public void testSequentialPaging() {
int[] asc = {2, 5, 8, 11, 14, 17, 20, 23, 25};
int[] dsc = {-3, -6, -9, -12, -15, -18, -21, -24, -26};
int[] expected = descending ? dsc : asc;
SelectQuery query = newTestQuery().intervals(I_0112_0114).build();
for (int offset : expected) {
List<Result<SelectResultValue>> results =
Sequences.toList(
runner.run(query, ImmutableMap.of()),
Lists.<Result<SelectResultValue>>newArrayList());
Assert.assertEquals(1, results.size());
SelectResultValue result = results.get(0).getValue();
Map<String, Integer> pagingIdentifiers = result.getPagingIdentifiers();
Assert.assertEquals(
offset, pagingIdentifiers.get(QueryRunnerTestHelper.segmentId).intValue());
Map<String, Integer> next = PagingSpec.next(pagingIdentifiers, descending);
query = query.withPagingSpec(new PagingSpec(next, 3));
}
query = newTestQuery().intervals(I_0112_0114).build();
for (int offset : expected) {
List<Result<SelectResultValue>> results =
Sequences.toList(
runner.run(query, ImmutableMap.of()),
Lists.<Result<SelectResultValue>>newArrayList());
Assert.assertEquals(1, results.size());
SelectResultValue result = results.get(0).getValue();
Map<String, Integer> pagingIdentifiers = result.getPagingIdentifiers();
Assert.assertEquals(
offset, pagingIdentifiers.get(QueryRunnerTestHelper.segmentId).intValue());
// use identifier as-is but with fromNext=true
query = query.withPagingSpec(new PagingSpec(pagingIdentifiers, 3, true));
}
}