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ru.yandex.clickhouse.util.ClickHouseBitmap Maven / Gradle / Ivy
package ru.yandex.clickhouse.util;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutput;
import java.io.DataOutputStream;
import java.io.IOException;
import java.nio.Buffer;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.Objects;
import org.roaringbitmap.RoaringBitmap;
import org.roaringbitmap.buffer.ImmutableRoaringBitmap;
import org.roaringbitmap.buffer.MutableRoaringBitmap;
import org.roaringbitmap.longlong.Roaring64Bitmap;
import org.roaringbitmap.longlong.Roaring64NavigableMap;
import ru.yandex.clickhouse.domain.ClickHouseDataType;
public abstract class ClickHouseBitmap {
static class ClickHouseRoaringBitmap extends ClickHouseBitmap {
private final RoaringBitmap rb;
protected ClickHouseRoaringBitmap(RoaringBitmap bitmap, ClickHouseDataType innerType) {
super(bitmap, innerType);
this.rb = Objects.requireNonNull(bitmap);
}
@Override
public int getCardinality() {
return rb.getCardinality();
}
@Override
public void serialize(ByteBuffer buffer) {
rb.serialize(buffer);
}
@Override
public int serializedSizeInBytes() {
return rb.serializedSizeInBytes();
}
@Override
public int[] toIntArray() {
return rb.toArray();
}
}
static class ClickHouseImmutableRoaringBitmap extends ClickHouseBitmap {
private final ImmutableRoaringBitmap rb;
protected ClickHouseImmutableRoaringBitmap(ImmutableRoaringBitmap rb, ClickHouseDataType innerType) {
super(rb, innerType);
this.rb = Objects.requireNonNull(rb);
}
@Override
public int getCardinality() {
return rb.getCardinality();
}
@Override
public void serialize(ByteBuffer buffer) {
rb.serialize(buffer);
}
@Override
public int serializedSizeInBytes() {
return rb.serializedSizeInBytes();
}
@Override
public int[] toIntArray() {
return rb.toArray();
}
}
static class ClickHouseMutableRoaringBitmap extends ClickHouseBitmap {
private final MutableRoaringBitmap rb;
protected ClickHouseMutableRoaringBitmap(MutableRoaringBitmap bitmap, ClickHouseDataType innerType) {
super(bitmap, innerType);
this.rb = Objects.requireNonNull(bitmap);
}
@Override
public int getCardinality() {
return rb.getCardinality();
}
@Override
public void serialize(ByteBuffer buffer) {
rb.serialize(buffer);
}
@Override
public int serializedSizeInBytes() {
return rb.serializedSizeInBytes();
}
@Override
public int[] toIntArray() {
return rb.toArray();
}
}
static class ClickHouseRoaring64NavigableMap extends ClickHouseBitmap {
private final Roaring64NavigableMap rb;
protected ClickHouseRoaring64NavigableMap(Roaring64NavigableMap bitmap, ClickHouseDataType innerType) {
super(bitmap, innerType);
this.rb = Objects.requireNonNull(bitmap);
}
@Override
public int getCardinality() {
return rb.getIntCardinality();
}
@Override
public long getLongCardinality() {
return rb.getLongCardinality();
}
@Override
public void serialize(ByteBuffer buffer) {
int size = serializedSizeInBytes();
// TODO use custom data output so that we can handle large byte array
try (ByteArrayOutputStream bas = new ByteArrayOutputStream(size)) {
DataOutput out = new DataOutputStream(bas);
try {
// https://github.com/RoaringBitmap/RoaringBitmap/blob/0.9.9/RoaringBitmap/src/main/java/org/roaringbitmap/longlong/Roaring64NavigableMap.java#L1105
rb.serialize(out);
} catch (IOException e) {
throw new IllegalArgumentException("Failed to serialize given bitmap", e);
}
byte[] bytes = bas.toByteArray();
for (int i = 4; i > 0; i--) {
buffer.put(bytes[i]);
}
buffer.putInt(0);
buffer.put(bytes, 5, size - 5);
} catch (IOException e) {
throw new IllegalStateException("Failed to serialize given bitmap", e);
}
}
@Override
public int serializedSizeInBytes() {
return (int) rb.serializedSizeInBytes();
}
@Override
public long serializedSizeInBytesAsLong() {
return rb.serializedSizeInBytes();
}
@Override
public int[] toIntArray() {
long[] longs = toLongArray();
int len = longs.length;
int[] ints = new int[len];
for (int i = 0; i < len; i++) {
ints[i] = (int) longs[i];
}
return ints;
}
@Override
public long[] toLongArray() {
return rb.toArray();
}
}
public static ClickHouseBitmap wrap(byte... values) {
boolean isUnsigned = true;
int len = values.length;
int[] ints = new int[len];
for (int i = 0; i < len; i++) {
byte v = values[i];
ints[i] = v;
if (isUnsigned && v < 0) {
isUnsigned = false;
}
}
return wrap(RoaringBitmap.bitmapOf(ints), isUnsigned ? ClickHouseDataType.UInt8 : ClickHouseDataType.Int8);
}
public static ClickHouseBitmap wrap(short... values) {
boolean isUnsigned = true;
int len = values.length;
int[] ints = new int[len];
for (int i = 0; i < len; i++) {
short v = values[i];
ints[i] = v;
if (isUnsigned && v < 0) {
isUnsigned = false;
}
}
return wrap(RoaringBitmap.bitmapOf(ints), isUnsigned ? ClickHouseDataType.UInt16 : ClickHouseDataType.Int16);
}
public static ClickHouseBitmap wrap(int... values) {
boolean isUnsigned = true;
int len = values.length;
int[] ints = new int[len];
for (int i = 0; i < len; i++) {
int v = values[i];
ints[i] = v;
if (isUnsigned && v < 0) {
isUnsigned = false;
}
}
return wrap(RoaringBitmap.bitmapOf(ints), isUnsigned ? ClickHouseDataType.UInt32 : ClickHouseDataType.Int32);
}
public static ClickHouseBitmap wrap(long... values) {
boolean isUnsigned = true;
int len = values.length;
long[] longs = new long[len];
for (int i = 0; i < len; i++) {
long v = values[i];
longs[i] = v;
if (isUnsigned && v < 0) {
isUnsigned = false;
}
}
return wrap(Roaring64NavigableMap.bitmapOf(longs),
isUnsigned ? ClickHouseDataType.UInt64 : ClickHouseDataType.Int64);
}
public static ClickHouseBitmap wrap(Object bitmap, ClickHouseDataType innerType) {
final ClickHouseBitmap b;
if (bitmap instanceof RoaringBitmap) {
b = new ClickHouseRoaringBitmap((RoaringBitmap) bitmap, innerType);
} else if (bitmap instanceof MutableRoaringBitmap) {
b = new ClickHouseMutableRoaringBitmap((MutableRoaringBitmap) bitmap, innerType);
} else if (bitmap instanceof ImmutableRoaringBitmap) {
b = new ClickHouseImmutableRoaringBitmap((ImmutableRoaringBitmap) bitmap, innerType);
} else if (bitmap instanceof Roaring64Bitmap) {
b = new ClickHouseRoaring64NavigableMap(
Roaring64NavigableMap.bitmapOf(((Roaring64Bitmap) bitmap).toArray()), innerType);
} else if (bitmap instanceof Roaring64NavigableMap) {
b = new ClickHouseRoaring64NavigableMap((Roaring64NavigableMap) bitmap, innerType);
} else {
throw new IllegalArgumentException("Only RoaringBitmap is supported but got: " + bitmap);
}
return b;
}
public static ClickHouseBitmap deserialize(DataInputStream in, ClickHouseDataType innerType) throws IOException {
final ClickHouseBitmap rb;
int byteLen = byteLength(innerType);
int flag = in.readUnsignedByte();
if (flag == 0) {
byte cardinality = (byte) in.readUnsignedByte();
byte[] bytes = new byte[2 + byteLen * cardinality];
bytes[0] = (byte) flag;
bytes[1] = cardinality;
in.read(bytes, 2, bytes.length - 2);
rb = ClickHouseBitmap.deserialize(bytes, innerType);
} else {
int len = Utils.readVarInt(in);
byte[] bytes = new byte[len];
if (byteLen <= 4) {
Utils.readFully(in, bytes);
RoaringBitmap b = new RoaringBitmap();
b.deserialize(flip(newBuffer(len).put(bytes)));
rb = ClickHouseBitmap.wrap(b, innerType);
} else {
// TODO implement a wrapper of DataInput to get rid of byte array here
bytes[0] = (byte) 0; // always unsigned
// read map size in big-endian byte order
for (int i = 4; i > 0; i--) {
bytes[i] = in.readByte();
}
if (in.readByte() != 0 || in.readByte() != 0 || in.readByte() != 0 || in.readByte() != 0) {
throw new IllegalStateException(
"Not able to deserialize ClickHouseBitmap for too many bitmaps(>" + 0xFFFFFFFFL + ")!");
}
// read the rest
Utils.readFully(in, bytes, 5, len - 5);
Roaring64NavigableMap b = new Roaring64NavigableMap();
b.deserialize(new DataInputStream(new ByteArrayInputStream(bytes)));
rb = ClickHouseBitmap.wrap(b, innerType);
}
}
return rb;
}
public static ClickHouseBitmap deserialize(byte[] bytes, ClickHouseDataType innerType) throws IOException {
// https://github.com/ClickHouse/ClickHouse/blob/master/src/AggregateFunctions/AggregateFunctionGroupBitmapData.h#L100
ClickHouseBitmap rb = ClickHouseBitmap.wrap();
if (bytes == null || bytes.length == 0) {
return rb;
}
int byteLen = byteLength(innerType);
ByteBuffer buffer = newBuffer(bytes.length);
buffer = (ByteBuffer) ((Buffer) buffer.put(bytes)).flip();
if (buffer.get() == (byte) 0) { // small set
int cardinality = buffer.get();
if (byteLen == 1) {
byte[] values = new byte[cardinality];
for (int i = 0; i < cardinality; i++) {
values[i] = buffer.get();
}
rb = ClickHouseBitmap.wrap(values);
} else if (byteLen == 2) {
short[] values = new short[cardinality];
for (int i = 0; i < cardinality; i++) {
values[i] = buffer.getShort();
}
rb = ClickHouseBitmap.wrap(values);
} else if (byteLen == 4) {
int[] values = new int[cardinality];
for (int i = 0; i < cardinality; i++) {
values[i] = buffer.getInt();
}
rb = ClickHouseBitmap.wrap(values);
} else {
long[] values = new long[cardinality];
for (int i = 0; i < cardinality; i++) {
values[i] = buffer.getLong();
}
rb = ClickHouseBitmap.wrap(values);
}
} else { // serialized bitmap
int len = Utils.readVarInt(buffer);
if (buffer.remaining() < len) {
throw new IllegalStateException(
"Need " + len + " bytes to deserialize ClickHouseBitmap but only got " + buffer.remaining());
}
if (byteLen <= 4) {
RoaringBitmap b = new RoaringBitmap();
b.deserialize(buffer);
rb = ClickHouseBitmap.wrap(b, innerType);
} else {
// consume map size(long in little-endian byte order)
byte[] bitmaps = new byte[4];
buffer.get(bitmaps);
if (buffer.get() != 0 || buffer.get() != 0 || buffer.get() != 0 || buffer.get() != 0) {
throw new IllegalStateException(
"Not able to deserialize ClickHouseBitmap for too many bitmaps(>" + 0xFFFFFFFFL + ")!");
}
// replace the last 5 bytes to flag(boolean for signed/unsigned) and map
// size(integer)
buffer.position(buffer.position() - 5);
// always unsigned due to limit of CRoaring
buffer.put((byte) 0);
// big-endian -> little-endian
for (int i = 3; i >= 0; i--) {
buffer.put(bitmaps[i]);
}
buffer.position(buffer.position() - 5);
bitmaps = new byte[buffer.remaining()];
buffer.get(bitmaps);
Roaring64NavigableMap b = new Roaring64NavigableMap();
b.deserialize(new DataInputStream(new ByteArrayInputStream(bitmaps)));
rb = ClickHouseBitmap.wrap(b, innerType);
}
}
return rb;
}
private static ByteBuffer newBuffer(int capacity) {
ByteBuffer buffer = ByteBuffer.allocate(capacity);
if (buffer.order() != ByteOrder.LITTLE_ENDIAN) {
buffer = buffer.slice().order(ByteOrder.LITTLE_ENDIAN);
}
return buffer;
}
private static ByteBuffer flip(ByteBuffer buffer) {
return (ByteBuffer) ((Buffer) buffer).flip();
}
private static int byteLength(ClickHouseDataType type) {
int byteLen = 0;
switch (Objects.requireNonNull(type)) {
case Int8:
case UInt8:
byteLen = 1;
break;
case Int16:
case UInt16:
byteLen = 2;
break;
case Int32:
case UInt32:
byteLen = 4;
break;
case Int64:
case UInt64:
byteLen = 8;
break;
default:
throw new IllegalArgumentException("Only native integer types are supported but we got: " + type.name());
}
return byteLen;
}
protected final ClickHouseDataType innerType;
protected final int byteLen;
protected final Object reference;
protected ClickHouseBitmap(Object bitmap, ClickHouseDataType innerType) {
this.innerType = innerType;
this.byteLen = byteLength(innerType);
this.reference = Objects.requireNonNull(bitmap);
}
public abstract int getCardinality();
public long getLongCardinality() {
return getCardinality();
}
public abstract void serialize(ByteBuffer buffer);
public abstract int serializedSizeInBytes();
public long serializedSizeInBytesAsLong() {
return serializedSizeInBytes();
}
public abstract int[] toIntArray();
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null || getClass() != obj.getClass()) {
return false;
}
ClickHouseBitmap b = (ClickHouseBitmap) obj;
return Objects.equals(innerType, b.innerType) && Objects.equals(byteLen, b.byteLen)
&& Objects.equals(reference, b.reference);
}
@Override
public int hashCode() {
return Objects.hash(innerType, byteLen, reference);
}
public long[] toLongArray() {
int[] ints = toIntArray();
int len = ints.length;
long[] longs = new long[len];
for (int i = 0; i < len; i++) {
longs[i] = ints[i];
}
return longs;
}
/**
* Serialize the bitmap into a flipped ByteBuffer.
*
* @return flipped byte buffer
*/
public ByteBuffer toByteBuffer() {
ByteBuffer buf;
int cardinality = getCardinality();
if (cardinality <= 32) {
buf = newBuffer(2 + byteLen * cardinality);
buf.put((byte) 0);
buf.put((byte) cardinality);
if (byteLen == 1) {
for (int v : toIntArray()) {
buf.put((byte) v);
}
} else if (byteLen == 2) {
for (int v : toIntArray()) {
buf.putShort((short) v);
}
} else if (byteLen == 4) {
for (int v : toIntArray()) {
buf.putInt(v);
}
} else { // 64
for (long v : toLongArray()) {
buf.putLong(v);
}
}
} else if (byteLen <= 4) {
int size = serializedSizeInBytes();
int varIntSize = Utils.getVarIntSize(size);
buf = newBuffer(1 + varIntSize + size);
buf.put((byte) 1);
Utils.writeVarInt(size, buf);
serialize(buf);
} else { // 64
// 1) deduct one to exclude the leading byte - boolean flag, see below:
// https://github.com/RoaringBitmap/RoaringBitmap/blob/0.9.9/RoaringBitmap/src/main/java/org/roaringbitmap/longlong/Roaring64NavigableMap.java#L1107
// 2) add 4 bytes because CRoaring uses long to store count of 32-bit bitmaps,
// while Java uses int - see
// https://github.com/RoaringBitmap/CRoaring/blob/v0.2.66/cpp/roaring64map.hh#L597
long size = serializedSizeInBytesAsLong() - 1 + 4;
int varIntSize = Utils.getVarLongSize(size);
// TODO add serialize(DataOutput) to handle more
int intSize = (int) size;
buf = newBuffer(1 + varIntSize + intSize);
buf.put((byte) 1);
Utils.writeVarInt(intSize, buf);
serialize(buf);
}
return (ByteBuffer) ((Buffer) buf).flip();
}
public byte[] toBytes() {
ByteBuffer buffer = toByteBuffer();
byte[] bytes = new byte[buffer.remaining()];
buffer.get(bytes);
return bytes;
}
public String toBitmapBuildExpression() {
StringBuilder sb = new StringBuilder();
if (byteLen <= 4) {
for (int v : toIntArray()) {
sb.append(',').append("to").append(innerType.name()).append('(').append(v).append(')');
}
} else {
for (long v : toLongArray()) {
sb.append(',').append("to").append(innerType.name()).append('(').append(v).append(')');
}
}
if (sb.length() > 0) {
sb.deleteCharAt(0).insert(0, '[').append(']');
} else {
sb.append("cast([] as Array(").append(innerType.name()).append(')').append(')');
}
return sb.insert(0, "bitmapBuild(").append(')').toString();
}
public Object unwrap() {
return this.reference;
}
}
