public void testEmptyAggregation() throws Exception {
SearchResponse searchResponse =
client()
.prepareSearch("empty_bucket_idx")
.setQuery(matchAllQuery())
.addAggregation(
histogram("histo")
.field("value")
.interval(1L)
.minDocCount(0)
.subAggregation(nested("nested", "nested")))
.execute()
.actionGet();
assertThat(searchResponse.getHits().getTotalHits(), equalTo(2L));
Histogram histo = searchResponse.getAggregations().get("histo");
assertThat(histo, Matchers.notNullValue());
Histogram.Bucket bucket = histo.getBuckets().get(1);
assertThat(bucket, Matchers.notNullValue());
Nested nested = bucket.getAggregations().get("nested");
assertThat(nested, Matchers.notNullValue());
assertThat(nested.getName(), equalTo("nested"));
assertThat(nested.getDocCount(), is(0L));
}
public void testNestedWithSubTermsAgg() throws Exception {
SearchResponse response =
client()
.prepareSearch("idx")
.addAggregation(
nested("nested", "nested")
.subAggregation(
terms("values")
.field("nested.value")
.size(100)
.collectMode(aggCollectionMode)))
.execute()
.actionGet();
assertSearchResponse(response);
long docCount = 0;
long[] counts = new long[numParents + 6];
for (int i = 0; i < numParents; ++i) {
for (int j = 0; j < numChildren[i]; ++j) {
final int value = i + 1 + j;
++counts[value];
++docCount;
}
}
int uniqueValues = 0;
for (long count : counts) {
if (count > 0) {
++uniqueValues;
}
}
Nested nested = response.getAggregations().get("nested");
assertThat(nested, notNullValue());
assertThat(nested.getName(), equalTo("nested"));
assertThat(nested.getDocCount(), equalTo(docCount));
assertThat((long) nested.getProperty("_count"), equalTo(docCount));
assertThat(nested.getAggregations().asList().isEmpty(), is(false));
LongTerms values = nested.getAggregations().get("values");
assertThat(values, notNullValue());
assertThat(values.getName(), equalTo("values"));
assertThat(values.getBuckets(), notNullValue());
assertThat(values.getBuckets().size(), equalTo(uniqueValues));
for (int i = 0; i < counts.length; ++i) {
final String key = Long.toString(i);
if (counts[i] == 0) {
assertNull(values.getBucketByKey(key));
} else {
Bucket bucket = values.getBucketByKey(key);
assertNotNull(bucket);
assertEquals(counts[i], bucket.getDocCount());
}
}
assertThat((LongTerms) nested.getProperty("values"), sameInstance(values));
}
public void testNonExistingNestedField() throws Exception {
SearchResponse searchResponse =
client()
.prepareSearch("idx")
.addAggregation(
nested("nested", "value")
.subAggregation(stats("nested_value_stats").field("nested.value")))
.execute()
.actionGet();
Nested nested = searchResponse.getAggregations().get("nested");
assertThat(nested, Matchers.notNullValue());
assertThat(nested.getName(), equalTo("nested"));
assertThat(nested.getDocCount(), is(0L));
}
public void testSimple() throws Exception {
SearchResponse response =
client()
.prepareSearch("idx")
.addAggregation(
nested("nested", "nested")
.subAggregation(stats("nested_value_stats").field("nested.value")))
.execute()
.actionGet();
assertSearchResponse(response);
double min = Double.POSITIVE_INFINITY;
double max = Double.NEGATIVE_INFINITY;
long sum = 0;
long count = 0;
for (int i = 0; i < numParents; ++i) {
for (int j = 0; j < numChildren[i]; ++j) {
final long value = i + 1 + j;
min = Math.min(min, value);
max = Math.max(max, value);
sum += value;
++count;
}
}
Nested nested = response.getAggregations().get("nested");
assertThat(nested, notNullValue());
assertThat(nested.getName(), equalTo("nested"));
assertThat(nested.getDocCount(), equalTo(count));
assertThat(nested.getAggregations().asList().isEmpty(), is(false));
Stats stats = nested.getAggregations().get("nested_value_stats");
assertThat(stats, notNullValue());
assertThat(stats.getMin(), equalTo(min));
assertThat(stats.getMax(), equalTo(max));
assertThat(stats.getCount(), equalTo(count));
assertThat(stats.getSum(), equalTo((double) sum));
assertThat(stats.getAvg(), equalTo((double) sum / count));
}
public void testNestNestedAggs() throws Exception {
SearchResponse response =
client()
.prepareSearch("idx_nested_nested_aggs")
.addAggregation(
nested("level1", "nested1")
.subAggregation(
terms("a")
.field("nested1.a")
.collectMode(aggCollectionMode)
.subAggregation(
nested("level2", "nested1.nested2")
.subAggregation(sum("sum").field("nested1.nested2.b")))))
.get();
assertSearchResponse(response);
Nested level1 = response.getAggregations().get("level1");
assertThat(level1, notNullValue());
assertThat(level1.getName(), equalTo("level1"));
assertThat(level1.getDocCount(), equalTo(2L));
StringTerms a = level1.getAggregations().get("a");
Terms.Bucket bBucket = a.getBucketByKey("a");
assertThat(bBucket.getDocCount(), equalTo(1L));
Nested level2 = bBucket.getAggregations().get("level2");
assertThat(level2.getDocCount(), equalTo(1L));
Sum sum = level2.getAggregations().get("sum");
assertThat(sum.getValue(), equalTo(2d));
a = level1.getAggregations().get("a");
bBucket = a.getBucketByKey("b");
assertThat(bBucket.getDocCount(), equalTo(1L));
level2 = bBucket.getAggregations().get("level2");
assertThat(level2.getDocCount(), equalTo(1L));
sum = level2.getAggregations().get("sum");
assertThat(sum.getValue(), equalTo(2d));
}