/**
* 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.sqoop.manager.oracle.util;
import java.math.BigDecimal;
import java.math.BigInteger;
/**
* Generates test data for Oracle FLOAT columns.
*/
public class FloatGenerator extends OraOopTestDataGenerator<BigDecimal> {
private static final int MIN_SCALE = -125;
private static final int MAX_SCALE = 125;
private final int precision;
/**
* Create a float generator with the specified binary precision.
*
* @param precision
* The number of bits in the value of generated numbers
*/
public FloatGenerator(int precision) {
super();
this.precision = precision;
}
@Override
public BigDecimal next() {
BigInteger unscaled = new BigInteger(precision, rng);
BigDecimal unscaledBD = new BigDecimal(unscaled);
int scale =
rng.nextInt(MAX_SCALE - MIN_SCALE + 1) + MIN_SCALE
- unscaledBD.precision();
BigDecimal result = new BigDecimal(unscaled, -scale);
if (rng.nextBoolean()) {
result = result.negate();
}
return result;
}
}