org.apache.hadoop.hive.ql.exec.vector.expressions.CastDecimalToLong Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
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* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.hadoop.hive.ql.exec.vector.expressions;
import org.apache.hadoop.hive.ql.exec.vector.DecimalColumnVector;
import org.apache.hadoop.hive.ql.exec.vector.LongColumnVector;
import org.apache.hadoop.hive.serde2.io.HiveDecimalWritable;
/**
* Type cast decimal to long
*/
public class CastDecimalToLong extends FuncDecimalToLong {
private static final long serialVersionUID = 1L;
public CastDecimalToLong() {
super();
}
public CastDecimalToLong(int inputColumn, int outputColumnNum) {
super(inputColumn, outputColumnNum);
}
@Override
protected void func(LongColumnVector outV, DecimalColumnVector inV, int i) {
HiveDecimalWritable decWritable = inV.vector[i];
// Check based on the Hive integer type we need to test with isByte, isShort, isInt, isLong,
// so we do not use corrupted (truncated) values for the Hive integer type.
boolean isInRange;
switch (integerPrimitiveCategory) {
case BYTE:
isInRange = decWritable.isByte();
break;
case SHORT:
isInRange = decWritable.isShort();
break;
case INT:
isInRange = decWritable.isInt();
break;
case LONG:
isInRange = decWritable.isLong();
break;
default:
throw new RuntimeException("Unexpected integer primitive category " + integerPrimitiveCategory);
}
if (!isInRange) {
outV.isNull[i] = true;
outV.noNulls = false;
return;
}
outV.isNull[i] = false;
switch (integerPrimitiveCategory) {
case BYTE:
outV.vector[i] = decWritable.byteValue();
break;
case SHORT:
outV.vector[i] = decWritable.shortValue();
break;
case INT:
outV.vector[i] = decWritable.intValue();
break;
case LONG:
outV.vector[i] = decWritable.longValue();
break;
default:
throw new RuntimeException("Unexpected integer primitive category " + integerPrimitiveCategory);
}
}
}