public static void main(String[] args) throws Exception {
RoaringBitmap bitmap = new RoaringBitmap();
CortaraConfiguration conf = new CortaraConfiguration();
String path = "/tmp/test.format";
ColumnMetaReader metaReader = new ColumnMetaReader(path, conf);
RowGroup rowGroup = metaReader.readLastRowGorup();
byte[] data = rowGroup.getIndexData().getValueBitmap();
Map<Integer, Integer> distCount = rowGroup.getIndexData().getDistinctCount();
ByteBuffer buf = ByteBuffer.wrap(data, 0, data.length);
DataInputByteBuffer bis = new DataInputByteBuffer();
bis.reset(buf);
bitmap.deserialize(bis);
for (int i = 0; i < bitmap.getCardinality(); i++) {
System.out.println(bitmap.select(i) + ":" + distCount.get(bitmap.select(i)));
}
}
private static final int[] toDocArray(ReaderLocal reader, DocumentsRequest request)
throws IOException {
SchemaField schemaField = null;
Schema schema = request.getConfig().getSchema();
String field = request.getField();
if (!StringUtils.isEmpty(field)) {
schemaField = schema.getField(field);
if (schemaField == null) throw new IOException("Field not found: " + field);
} else {
schemaField = schema.getFieldList().getUniqueField();
if (schemaField == null) throw new IOException("No unique field");
}
int higher = -1;
RoaringBitmap bitSet = new RoaringBitmap();
String fieldName = schemaField.getName();
for (String uniqueKey : request.getUniqueKeyList()) {
TermDocs termDocs = reader.getTermDocs(new Term(fieldName, uniqueKey));
if (termDocs != null) {
while (termDocs.next()) {
int doc = termDocs.doc();
if (doc > higher) higher = doc;
bitSet.add(doc);
}
}
termDocs.close();
}
if (request.isReverse()) bitSet.flip(0, higher + 1);
IntBufferedArrayInterface intBufferArray =
IntBufferedArrayFactory.INSTANCE.newInstance(bitSet.getCardinality());
IntIterator iterator = bitSet.getIntIterator();
while (iterator.hasNext()) {
int docId = iterator.next();
if (!reader.isDeletedNoLock(docId)) intBufferArray.add(docId);
}
return intBufferArray.getFinalArray();
}