/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.drill.exec.store.mock;
import java.util.Random;
import org.apache.drill.exec.vector.Float8Vector;
import org.apache.drill.exec.vector.ValueVector;
/**
* Generates random field values uniformly distributed over
* the range +-1 million, with any number of digits past
* the decimal point.
*/
public class DoubleGen implements FieldGen {
private final Random rand = new Random();
@Override
public void setup(ColumnDef colDef) { }
private double value() {
return rand.nextDouble() * 2_000_000 - 1_000_000;
}
@Override
public void setValue(ValueVector v, int index) {
Float8Vector vector = (Float8Vector) v;
vector.getMutator().set(index, value());
}
}