io.trino.spi.block.Int128ArrayBlockBuilder Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of trino-spi Show documentation
There is a newer version: 468
/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.trino.spi.block;

import io.airlift.slice.Slice;
import io.airlift.slice.Slices;
import org.openjdk.jol.info.ClassLayout;

import javax.annotation.Nullable;

import java.util.Arrays;
import java.util.OptionalInt;
import java.util.function.ObjLongConsumer;

import static io.airlift.slice.SizeOf.SIZE_OF_LONG;
import static io.airlift.slice.SizeOf.sizeOf;
import static io.trino.spi.block.BlockUtil.calculateBlockResetSize;
import static io.trino.spi.block.BlockUtil.checkArrayRange;
import static io.trino.spi.block.BlockUtil.checkValidRegion;
import static io.trino.spi.block.BlockUtil.compactArray;
import static io.trino.spi.block.Int128ArrayBlock.INT128_BYTES;
import static java.lang.Math.max;

public class Int128ArrayBlockBuilder
        implements BlockBuilder
{
    private static final int INSTANCE_SIZE = ClassLayout.parseClass(Int128ArrayBlockBuilder.class).instanceSize();
    private static final Block NULL_VALUE_BLOCK = new Int128ArrayBlock(0, 1, new boolean[] {true}, new long[2]);

    @Nullable
    private final BlockBuilderStatus blockBuilderStatus;
    private boolean initialized;
    private final int initialEntryCount;

    private int positionCount;
    private boolean hasNullValue;
    private boolean hasNonNullValue;

    // it is assumed that these arrays are the same length
    private boolean[] valueIsNull = new boolean[0];
    private long[] values = new long[0];

    private long retainedSizeInBytes;

    private int entryPositionCount;

    public Int128ArrayBlockBuilder(@Nullable BlockBuilderStatus blockBuilderStatus, int expectedEntries)
    {
        this.blockBuilderStatus = blockBuilderStatus;
        this.initialEntryCount = max(expectedEntries, 1);

        updateDataSize();
    }

    @Override
    public BlockBuilder writeLong(long value)
    {
        if (valueIsNull.length <= positionCount) {
            growCapacity();
        }

        values[(positionCount * 2) + entryPositionCount] = value;
        entryPositionCount++;

        hasNonNullValue = true;
        return this;
    }

    @Override
    public BlockBuilder closeEntry()
    {
        if (entryPositionCount != 2) {
            throw new IllegalStateException("Expected entry size to be exactly " + INT128_BYTES + " bytes but was " + (entryPositionCount * SIZE_OF_LONG));
        }

        positionCount++;
        entryPositionCount = 0;
        if (blockBuilderStatus != null) {
            blockBuilderStatus.addBytes(Int128ArrayBlock.SIZE_IN_BYTES_PER_POSITION);
        }
        return this;
    }

    @Override
    public BlockBuilder appendNull()
    {
        if (valueIsNull.length <= positionCount) {
            growCapacity();
        }
        if (entryPositionCount != 0) {
            throw new IllegalStateException("Current entry must be closed before a null can be written");
        }

        valueIsNull[positionCount] = true;

        hasNullValue = true;
        positionCount++;
        if (blockBuilderStatus != null) {
            blockBuilderStatus.addBytes(Int128ArrayBlock.SIZE_IN_BYTES_PER_POSITION);
        }
        return this;
    }

    @Override
    public Block build()
    {
        if (!hasNonNullValue) {
            return new RunLengthEncodedBlock(NULL_VALUE_BLOCK, positionCount);
        }
        return new Int128ArrayBlock(0, positionCount, hasNullValue ? valueIsNull : null, values);
    }

    @Override
    public BlockBuilder newBlockBuilderLike(BlockBuilderStatus blockBuilderStatus)
    {
        return new Int128ArrayBlockBuilder(blockBuilderStatus, calculateBlockResetSize(positionCount));
    }

    private void growCapacity()
    {
        int newSize;
        if (initialized) {
            newSize = BlockUtil.calculateNewArraySize(valueIsNull.length);
        }
        else {
            newSize = initialEntryCount;
            initialized = true;
        }

        valueIsNull = Arrays.copyOf(valueIsNull, newSize);
        values = Arrays.copyOf(values, newSize * 2);
        updateDataSize();
    }

    private void updateDataSize()
    {
        retainedSizeInBytes = INSTANCE_SIZE + sizeOf(valueIsNull) + sizeOf(values);
        if (blockBuilderStatus != null) {
            retainedSizeInBytes += BlockBuilderStatus.INSTANCE_SIZE;
        }
    }

    @Override
    public OptionalInt fixedSizeInBytesPerPosition()
    {
        return OptionalInt.of(Int128ArrayBlock.SIZE_IN_BYTES_PER_POSITION);
    }

    @Override
    public long getSizeInBytes()
    {
        return Int128ArrayBlock.SIZE_IN_BYTES_PER_POSITION * (long) positionCount;
    }

    @Override
    public long getRegionSizeInBytes(int position, int length)
    {
        return Int128ArrayBlock.SIZE_IN_BYTES_PER_POSITION * (long) length;
    }

    @Override
    public long getPositionsSizeInBytes(boolean[] positions, int selectedPositionsCount)
    {
        return Int128ArrayBlock.SIZE_IN_BYTES_PER_POSITION * (long) selectedPositionsCount;
    }

    @Override
    public long getRetainedSizeInBytes()
    {
        return retainedSizeInBytes;
    }

    @Override
    public long getEstimatedDataSizeForStats(int position)
    {
        return isNull(position) ? 0 : INT128_BYTES;
    }

    @Override
    public void retainedBytesForEachPart(ObjLongConsumer