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/*
* 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.planner.types.decimal;
import static org.apache.drill.exec.planner.types.DrillRelDataTypeSystem.DRILL_REL_DATATYPE_SYSTEM;
public class DecimalScalePrecisionModFunction extends DrillBaseComputeScalePrecision {
public DecimalScalePrecisionModFunction(int leftPrecision, int leftScale, int rightPrecision, int rightScale) {
super(leftPrecision, leftScale, rightPrecision, rightScale);
}
@Override
public void computeScalePrecision(int leftPrecision, int leftScale, int rightPrecision, int rightScale) {
// compute the output scale and precision here
outputScale = Math.max(leftScale, rightScale);
int leftIntegerDigits = leftPrecision - leftScale;
outputPrecision = DRILL_REL_DATATYPE_SYSTEM.getMaxNumericPrecision();
if (outputScale + leftIntegerDigits > outputPrecision) {
outputScale = outputPrecision - leftIntegerDigits;
}
// Output precision should atleast be greater or equal to the input precision
outputPrecision = Math.max(outputPrecision, Math.max(leftPrecision, rightPrecision));
}
}
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