io.deephaven.engine.table.impl.updateby.sum.FloatCumSumOperator 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
Show all versions of deephaven-engine-table Show documentation
Engine Table: Implementation and closely-coupled utilities
package io.deephaven.engine.table.impl.updateby.sum;
import io.deephaven.base.verify.Assert;
import io.deephaven.chunk.Chunk;
import io.deephaven.chunk.FloatChunk;
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.BaseFloatUpdateByOperator;
import org.jetbrains.annotations.NotNull;
import static io.deephaven.util.QueryConstants.NULL_FLOAT;
public class FloatCumSumOperator extends BaseFloatUpdateByOperator {
protected class Context extends BaseFloatUpdateByOperator.Context {
public FloatChunk extends Values> floatValueChunk;
protected Context(final int chunkSize) {
super(chunkSize);
}
@Override
public void setValueChunks(@NotNull final Chunk extends Values>[] valueChunks) {
floatValueChunk = valueChunks[0].asFloatChunk();
}
@Override
public void push(int pos, int count) {
Assert.eq(count, "push count", 1);
// read the value from the values chunk
final float currentVal = floatValueChunk.get(pos);
if (curVal == NULL_FLOAT) {
curVal = currentVal;
} else if (currentVal != NULL_FLOAT) {
curVal += currentVal;
}
}
}
public FloatCumSumOperator(@NotNull final MatchPair pair) {
super(pair, new String[] { pair.rightColumn });
}
@Override
public UpdateByOperator copy() {
return new FloatCumSumOperator(pair);
}
@NotNull
@Override
public UpdateByOperator.Context makeUpdateContext(final int affectedChunkSize, final int influencerChunkSize) {
return new Context(affectedChunkSize);
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy