io.deephaven.engine.table.impl.updateby.sum.ByteCumSumOperator Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of deephaven-engine-table Show documentation

Engine Table: Implementation and closely-coupled utilities

There is a newer version: 0.37.1

Show newest version

/*
 * ---------------------------------------------------------------------------------------------------------------------
 * AUTO-GENERATED CLASS - DO NOT EDIT MANUALLY - for any changes edit CharCumSumOperator and regenerate
 * ---------------------------------------------------------------------------------------------------------------------
 */
package io.deephaven.engine.table.impl.updateby.sum;

import io.deephaven.base.verify.Assert;
import io.deephaven.chunk.ByteChunk;
import io.deephaven.chunk.Chunk;
import io.deephaven.chunk.attributes.Values;
import io.deephaven.engine.table.impl.MatchPair;
import io.deephaven.engine.table.impl.updateby.UpdateByOperator;
import io.deephaven.engine.table.impl.updateby.internal.BaseLongUpdateByOperator;
import org.jetbrains.annotations.NotNull;

import static io.deephaven.util.QueryConstants.NULL_BYTE;
import static io.deephaven.util.QueryConstants.NULL_LONG;

public class ByteCumSumOperator extends BaseLongUpdateByOperator {
    // region extra-fields
    final byte nullValue;
    // endregion extra-fields

    protected class Context extends BaseLongUpdateByOperator.Context {
        public ByteChunk byteValueChunk;

        protected Context(final int chunkSize) {
            super(chunkSize);
        }

        @Override
        public void setValueChunks(@NotNull final Chunk[] valueChunks) {
            byteValueChunk = valueChunks[0].asByteChunk();
        }

        @Override
        public void push(int pos, int count) {
            Assert.eq(count, "push count", 1);

            // read the value from the values chunk
            final byte currentVal = byteValueChunk.get(pos);

            if(curVal == NULL_LONG) {
                curVal = currentVal == nullValue ? NULL_LONG : currentVal;
            } else if (currentVal != nullValue) {
                curVal += currentVal;
            }
        }
    }

    public ByteCumSumOperator(@NotNull final MatchPair pair
                              // region extra-constructor-args
            ,final byte nullValue
                              // endregion extra-constructor-args
    ) {
        super(pair, new String[] { pair.rightColumn });
        // region constructor
        this.nullValue = nullValue;
        // endregion constructor
    }

    @Override
    public UpdateByOperator copy() {
        return new ByteCumSumOperator(pair
              // region extra-copy-args
                , nullValue
              // endregion extra-copy-args
        );
    }

    @NotNull
    @Override
    public UpdateByOperator.Context makeUpdateContext(final int affectedChunkSize, final int influencerChunkSize) {
        return new Context(affectedChunkSize);
    }
}