@Override
public void evaluate(VectorizedRowBatch batch) {
if (childExpressions != null) {
this.evaluateChildren(batch);
}
DoubleColumnVector outputColVector = (DoubleColumnVector) batch.cols[outputCol];
int[] sel = batch.selected;
int n = batch.size;
double[] outputVector = outputColVector.vector;
outputColVector.noNulls = true;
outputColVector.isRepeating = false;
// return immediately if batch is empty
if (n == 0) {
return;
}
// For no-seed case, create new random number generator locally.
if (random == null) {
random = new Random();
}
if (batch.selectedInUse) {
for (int j = 0; j != n; j++) {
int i = sel[j];
outputVector[i] = random.nextDouble();
}
} else {
for (int i = 0; i != n; i++) {
outputVector[i] = random.nextDouble();
}
}
}
protected DoubleColumnVector getDoubleColumnVectorWithNull() {
DoubleColumnVector columnVector = new DoubleColumnVector(VectorizedRowBatch.DEFAULT_SIZE);
columnVector.noNulls = false;
Random random = new Random();
for (int i = 0; i != VectorizedRowBatch.DEFAULT_SIZE; i++) {
if (i % 100 == 0) {
columnVector.isNull[i] = true;
}
columnVector.vector[i] = random.nextDouble();
}
return columnVector;
}
protected DoubleColumnVector getRepeatingDoubleColumnVector() {
DoubleColumnVector columnVector = new DoubleColumnVector(VectorizedRowBatch.DEFAULT_SIZE);
columnVector.fill(2.0d);
return columnVector;
}
