public static String getTypeName(TypeInfo typeInfo, DataTypePhysicalVariation dataTypePhysicalVariation) {
    if (typeInfo == null) {
      return "<input type is null>";
    }
    if (dataTypePhysicalVariation != null && dataTypePhysicalVariation != DataTypePhysicalVariation.NONE) {
      return typeInfo.toString() + "/" + dataTypePhysicalVariation;
    } else {
      return typeInfo.toString();
    }
  }
Evaluate the child expressions on the given input batch.
@param vrg {@link VectorizedRowBatch}
ql/src/java/org/apache/hadoop/hive/ql/exec/vector/expressions/VectorExpression.java