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 stats(Terms terms, int maxDoc) throws IOException {
float minValue = NumericUtils.sortableIntToFloat(NumericUtils.getMinInt(terms));
float maxValue = NumericUtils.sortableIntToFloat(NumericUtils.getMaxInt(terms));
return new FieldStats.Float(
maxDoc,
terms.getDocCount(),
terms.getSumDocFreq(),
terms.getSumTotalTermFreq(),
minValue,
maxValue);
}
@Override
public String indexedToReadable(String indexedForm) {
switch (type) {
case INTEGER:
return Integer.toString(NumericUtils.prefixCodedToInt(indexedForm));
case FLOAT:
return Float.toString(
NumericUtils.sortableIntToFloat(NumericUtils.prefixCodedToInt(indexedForm)));
case LONG:
return Long.toString(NumericUtils.prefixCodedToLong(indexedForm));
case DOUBLE:
return Double.toString(
NumericUtils.sortableLongToDouble(NumericUtils.prefixCodedToLong(indexedForm)));
case DATE:
return dateField.toExternal(new Date(NumericUtils.prefixCodedToLong(indexedForm)));
default:
throw new SolrException(
SolrException.ErrorCode.SERVER_ERROR, "Unknown type for trie field: " + type);
}
}