io.deephaven.engine.table.impl.updateby.sum.DoubleCumSumOperator 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 FloatCumSumOperator and regenerate
 * ---------------------------------------------------------------------------------------------------------------------
 */
package io.deephaven.engine.table.impl.updateby.sum;

import io.deephaven.base.verify.Assert;
import io.deephaven.chunk.Chunk;
import io.deephaven.chunk.DoubleChunk;
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.BaseDoubleUpdateByOperator;
import org.jetbrains.annotations.NotNull;

import static io.deephaven.util.QueryConstants.NULL_DOUBLE;

public class DoubleCumSumOperator extends BaseDoubleUpdateByOperator {

    protected class Context extends BaseDoubleUpdateByOperator.Context {
        public DoubleChunk doubleValueChunk;

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

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

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

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

            if (curVal == NULL_DOUBLE) {
                curVal = currentVal;
            } else if (currentVal != NULL_DOUBLE) {
                curVal += currentVal;
            }
        }
    }

    public DoubleCumSumOperator(@NotNull final MatchPair pair) {
        super(pair, new String[] { pair.rightColumn });
    }

    @Override
    public UpdateByOperator copy() {
        return new DoubleCumSumOperator(pair);
    }

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