/*
* 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.phoenix.expression;
import java.util.List;
import org.apache.phoenix.schema.PDataType;
public abstract class ArithmeticExpression extends BaseCompoundExpression {
public ArithmeticExpression() {
}
public ArithmeticExpression(List<Expression> children) {
super(children);
}
@Override
public String toString() {
StringBuilder buf = new StringBuilder("(");
for (int i = 0; i < children.size() - 1; i++) {
buf.append(children.get(i) + getOperatorString());
}
buf.append(children.get(children.size()-1));
buf.append(')');
return buf.toString();
}
protected Integer getScale(Expression e) {
Integer scale = e.getScale();
if (scale != null) {
return scale;
}
PDataType dataType = e.getDataType();
if (dataType != null) {
scale = dataType.getScale(null);
if (scale != null) {
return scale;
}
}
return null;
}
protected int getPrecision(Expression e) {
Integer precision = e.getMaxLength();
if (precision != null) {
return precision;
}
PDataType dataType = e.getDataType();
if (dataType != null) {
precision = dataType.getMaxLength(null);
if (precision != null) {
return precision;
}
}
return PDataType.MAX_PRECISION;
}
abstract protected String getOperatorString();
}