/**
* 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.ref.values;
import java.math.BigDecimal;
import java.math.BigInteger;
import org.apache.drill.common.exceptions.DrillRuntimeException;
import org.apache.drill.common.types.Types;
import org.apache.drill.exec.ref.eval.EvaluatorTypes.BasicEvaluator;
import org.apache.drill.exec.ref.values.ScalarValues.DoubleScalar;
import org.apache.drill.exec.ref.values.ScalarValues.FloatScalar;
import org.apache.drill.exec.ref.values.ScalarValues.IntegerScalar;
import org.apache.drill.exec.ref.values.ScalarValues.LongScalar;
public abstract class NumericValue extends BaseDataValue implements ComparableValue, BasicEvaluator{
static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(NumericValue.class);
public static enum NumericType {
// order is important for conversion
INT, LONG, BIG_INTEGER, FLOAT, DOUBLE, BIG_DECIMAL;
}
public abstract NumericType getNumericType();
@Override
public int compareTo(DataValue dv2) {
NumericValue other = dv2.getAsNumeric();
NumericType mutual = getMutualType(this, other);
switch(mutual){
case BIG_DECIMAL:
return this.getAsBigDecimal().compareTo(other.getAsBigDecimal());
case BIG_INTEGER:
return this.getAsBigInteger().compareTo(other.getAsBigInteger());
case DOUBLE:
return Double.compare(this.getAsDouble(), other.getAsDouble());
case FLOAT:
return Float.compare(this.getAsFloat(), other.getAsFloat());
case INT:
return Integer.compare(this.getAsInt(), other.getAsInt());
case LONG:
return Long.compare(this.getAsLong(), other.getAsLong());
default:
throw new UnsupportedOperationException();
}
}
public int getHashCode(double d){
Long l = Double.doubleToLongBits(d);
return (int)(l ^ (l >>> 32));
}
@Override
public DataValue eval() {
return this;
}
private static NumericType getMutualType(NumericValue... values){
int ord = 0;
for(int i =0; i < values.length; i++){
ord = Math.max(ord, values[i].getNumericType().ordinal());
}
return NumericType.values()[ord];
}
@Override
public boolean equals(DataValue v) {
if(v == null) return false;
if(Types.isNumericType(v.getDataType())){
return this.compareTo(v) == 0;
}else{
return false;
}
}
public static NumericValue add(NumericValue... values){
NumericType mutual = getMutualType(values);
switch(mutual){
case BIG_DECIMAL:
throw new UnsupportedOperationException();
// BigDecimal bd = new BigDecimal(0);
// for(int i =0; i < values.length; i++){
// bd = bd.add(values[i].getAsBigDecimal());
// }
// return new BigDecimalScalar(bd);
case BIG_INTEGER:
throw new UnsupportedOperationException();
//
// BigInteger bi = BigInteger.valueOf(0);
// for(int i =0; i < values.length; i++){
// bi = bi.add(values[i].getAsBigInteger());
// }
// return new BigIntegerScalar(bi);
case DOUBLE:
double d = 0d;
for(int i =0; i < values.length; i++){
d += values[i].getAsDouble();
}
return new DoubleScalar(d);
case FLOAT:
float f = 0f;
for(int i =0; i < values.length; i++){
f += values[i].getAsFloat();
}
return new FloatScalar(f);
case INT:
int x = 0;
for(int i =0; i < values.length; i++){
x += values[i].getAsInt();
}
return new IntegerScalar(x);
case LONG:
int l = 0;
for(int i =0; i < values.length; i++){
l += values[i].getAsLong();
}
return new LongScalar(l);
default:
throw new UnsupportedOperationException();
}
}
@Override
public boolean supportsCompare(DataValue dv2) {
return Types.isNumericType(dv2.getDataType());
}
@Override
public NumericValue getAsNumeric() {
return this;
}
public long getAsLong(){
throw new DrillRuntimeException(String.format("A %s value can not be implicitly cast to a long.", this.getDataType()));
}
public int getAsInt(){
throw new DrillRuntimeException(String.format("A %s value can not be implicitly cast to an int.", this.getDataType()));
}
public float getAsFloat(){
throw new DrillRuntimeException(String.format("A %s value can not be implicitly cast to an float.", this.getDataType()));
}
public double getAsDouble(){
throw new DrillRuntimeException(String.format("A %s value can not be implicitly cast to a double.", this.getDataType()));
}
public BigDecimal getAsBigDecimal(){
throw new DrillRuntimeException(String.format("A %s value can not be implicitly cast to an big decimal.", this.getDataType()));
}
public BigInteger getAsBigInteger(){
throw new DrillRuntimeException(String.format("A %s value can not be implicitly cast to a big integer.", this.getDataType()));
}
}