public void testFloatFieldMinMax() throws Exception {
Directory dir = newDirectory();
RandomIndexWriter w = new RandomIndexWriter(random(), dir);
int numDocs = atLeast(100);
float minValue = Float.POSITIVE_INFINITY;
float maxValue = Float.NEGATIVE_INFINITY;
for (int i = 0; i < numDocs; i++) {
Document doc = new Document();
float num = random().nextFloat();
minValue = Math.min(num, minValue);
maxValue = Math.max(num, maxValue);
doc.add(new LegacyFloatField("field", num, Field.Store.NO));
w.addDocument(doc);
}
IndexReader r = w.getReader();
Terms terms = MultiFields.getTerms(r, "field");
assertEquals(
minValue, NumericUtils.sortableIntToFloat(LegacyNumericUtils.getMinInt(terms)), 0.0f);
assertEquals(
maxValue, NumericUtils.sortableIntToFloat(LegacyNumericUtils.getMaxInt(terms)), 0.0f);
r.close();
w.close();
dir.close();
}
@Override
public FieldStats.Long stats(IndexReader reader) throws IOException {
int maxDoc = reader.maxDoc();
Terms terms = org.apache.lucene.index.MultiFields.getTerms(reader, name());
if (terms == null) {
return null;
}
long minValue = LegacyNumericUtils.getMinInt(terms);
long maxValue = LegacyNumericUtils.getMaxInt(terms);
return new FieldStats.Long(
maxDoc,
terms.getDocCount(),
terms.getSumDocFreq(),
terms.getSumTotalTermFreq(),
isSearchable(),
isAggregatable(),
minValue,
maxValue);
}
public void testIntFieldMinMax() throws Exception {
Directory dir = newDirectory();
RandomIndexWriter w = new RandomIndexWriter(random(), dir);
int numDocs = atLeast(100);
int minValue = Integer.MAX_VALUE;
int maxValue = Integer.MIN_VALUE;
for (int i = 0; i < numDocs; i++) {
Document doc = new Document();
int num = random().nextInt();
minValue = Math.min(num, minValue);
maxValue = Math.max(num, maxValue);
doc.add(new LegacyIntField("field", num, Field.Store.NO));
w.addDocument(doc);
}
IndexReader r = w.getReader();
Terms terms = MultiFields.getTerms(r, "field");
assertEquals(new Integer(minValue), LegacyNumericUtils.getMinInt(terms));
assertEquals(new Integer(maxValue), LegacyNumericUtils.getMaxInt(terms));
r.close();
w.close();
dir.close();
}
public void testEmptyIntFieldMinMax() throws Exception {
assertNull(LegacyNumericUtils.getMinInt(EMPTY_TERMS));
assertNull(LegacyNumericUtils.getMaxInt(EMPTY_TERMS));
}