/*
* 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.math.BigDecimal;
import java.util.List;
import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
import org.apache.phoenix.exception.ValueTypeIncompatibleException;
import org.apache.phoenix.schema.PDataType;
import org.apache.phoenix.schema.SortOrder;
import org.apache.phoenix.schema.tuple.Tuple;
import org.apache.phoenix.util.NumberUtil;
public class DecimalMultiplyExpression extends MultiplyExpression {
public DecimalMultiplyExpression() {
}
public DecimalMultiplyExpression(List<Expression> children) {
super(children);
}
@Override
public boolean evaluate(Tuple tuple, ImmutableBytesWritable ptr) {
BigDecimal result = null;
for (int i=0; i<children.size(); i++) {
Expression childExpr = children.get(i);
if (!childExpr.evaluate(tuple, ptr)) {
return false;
}
if (ptr.getLength() == 0) {
return true;
}
PDataType childType = children.get(i).getDataType();
SortOrder childSortOrder = children.get(i).getSortOrder();
BigDecimal bd = (BigDecimal)PDataType.DECIMAL.toObject(ptr, childType, childSortOrder);
if (result == null) {
result = bd;
} else {
result = result.multiply(bd);
}
}
if (getMaxLength() != null || getScale() != null) {
result = NumberUtil.setDecimalWidthAndScale(result, getMaxLength(), getScale());
}
if (result == null) {
throw new ValueTypeIncompatibleException(PDataType.DECIMAL, getMaxLength(), getScale());
}
ptr.set(PDataType.DECIMAL.toBytes(result));
return true;
}
@Override
public PDataType getDataType() {
return PDataType.DECIMAL;
}
}