java.lang.Object
- java.lang.Enum<CalculationEnum>
- - net.sf.jasperreports.engine.type.CalculationEnum

All Implemented Interfaces:

Serializable, Comparable<CalculationEnum>, NamedEnum
```
public enum CalculationEnum
extends Enum<CalculationEnum>
implements NamedEnum
```
Author:

Sanda Zaharia (shertage@users.sourceforge.net)

Enum Constant Summary

Enum Constants
Enum Constant	Description
`AVERAGE`	The value is obtained by calculating the average for the series of values obtained by evaluating the variable's expression for each record in the data source.
`COUNT`	The value is calculated by counting the non-null values of the variable expression with every iteration in the data source.
`DISTINCT_COUNT`	The value is calculated by counting the distinct non-null values of the variable expression with every iteration in the data source.
`FIRST`	The variable keeps the first value and does not increment it on subsequent iterations.
`HIGHEST`	The value of the variable represents the highest in the series of values obtained by evaluating the variable's expression for each data source record.
`LOWEST`	The value of the variable represents the lowest in the series of values obtained by evaluating the variable's expression for each data source record.
`NOTHING`	The value is calculated by simply evaluating the variable expression.
`STANDARD_DEVIATION`	The value is obtained by calculating the standard deviation for the series of values returned by evaluating the variable's expression.
`SUM`	The value is calculated by summing up the values returned by the variable's expression.
`SYSTEM`	The value is not calculated by JasperReports.
`VARIANCE`	The value is obtained by calculating the variance for the series of values returned by evaluating the variable's expression.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static CalculationEnum`	`getByName(String name)`
`CalculationEnum`	`getDefault()`
`String`	`getName()`
`static CalculationEnum`	`getValueOrDefault(CalculationEnum value)`
`static CalculationEnum`	`valueOf(String name)`	Returns the enum constant of this type with the specified name.
`static CalculationEnum[]`	`values()`	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- Enum Constant Detail
  - NOTHING
```
public static final CalculationEnum NOTHING
```
    The value is calculated by simply evaluating the variable expression.
  - COUNT
```
public static final CalculationEnum COUNT
```
    The value is calculated by counting the non-null values of the variable expression with every iteration in the data source. The count variable must be numeric, but the variable expression needs not, since its value is not important. On the other hand, the initial value expression must be numeric since it will be the count variable initial value.
  - SUM
```
public static final CalculationEnum SUM
```
    The value is calculated by summing up the values returned by the variable's expression. Both the main expression and initial expression must have numeric type.
  - AVERAGE
```
public static final CalculationEnum AVERAGE
```
    The value is obtained by calculating the average for the series of values obtained by evaluating the variable's expression for each record in the data source. Both the main expression and initial expression must have numeric type.
    In order to calculate the average, the engine creates behind the scenes a helper report variable that calculates the sum of the values and uses it to calculate the average for those values. This helper sum variable gets its name from the corresponding average variable suffixed with "_SUM" sequence. This helper variable can be used in other report expressions just like any normal variable.
  - LOWEST
```
public static final CalculationEnum LOWEST
```
    The value of the variable represents the lowest in the series of values obtained by evaluating the variable's expression for each data source record.
  - HIGHEST
```
public static final CalculationEnum HIGHEST
```
    The value of the variable represents the highest in the series of values obtained by evaluating the variable's expression for each data source record.
  - STANDARD_DEVIATION
```
public static final CalculationEnum STANDARD_DEVIATION
```
    The value is obtained by calculating the standard deviation for the series of values returned by evaluating the variable's expression.
    Just like for the variables that calculate the average, the engine creates and uses helper report variables for first obtaining the sum and the count that correspond to your current series of values. The name for those helper variables that are created behind the scenes is obtained by suffixing the user variable with the "_SUM" or "_COUNT" suffix and they can be used in other report expressions like any other report variable.
    For variables that calculate the standard deviation, there is always a helper variable present, that first calculates the variance for the series of values and it has the "_VARIANCE" suffix added to its name.
  - VARIANCE
```
public static final CalculationEnum VARIANCE
```
    The value is obtained by calculating the variance for the series of values returned by evaluating the variable's expression.
  - SYSTEM
```
public static final CalculationEnum SYSTEM
```
    The value is not calculated by JasperReports. The user must calculate the value of the variable, almost certainly using the scriptlets functionality. For this type of calculation, the only thing the engine does is to conserve the value users have calculated, from one iteration in the data source to the next.
  - FIRST
```
public static final CalculationEnum FIRST
```
    The variable keeps the first value and does not increment it on subsequent iterations.
  - DISTINCT_COUNT
```
public static final CalculationEnum DISTINCT_COUNT
```
    The value is calculated by counting the distinct non-null values of the variable expression with every iteration in the data source. The count variable must be numeric, but the variable expression needs not, since its value is not important. On the other hand, the initial value expression must be numeric since it will be the count variable initial value.
- Method Detail
  - values
```
public static CalculationEnum[] values()
```
    Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
    for (CalculationEnum c : CalculationEnum.values()) System.out.println(c);
    Returns:
    
    an array containing the constants of this enum type, in the order they are declared
  - valueOf
```
public static CalculationEnum valueOf(String name)
```
    Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
    
    Parameters:
    
    name - the name of the enum constant to be returned.
    
    Returns:
    
    the enum constant with the specified name
    
    Throws:
    
    IllegalArgumentException - if this enum type has no constant with the specified name
    
    NullPointerException - if the argument is null
  - getName
```
public String getName()
```
    Specified by:
    
    getName in interface NamedEnum
  - getByName
```
public static CalculationEnum getByName(String name)
```
  - getValueOrDefault
```
public static CalculationEnum getValueOrDefault(CalculationEnum value)
```
  - getDefault
```
public CalculationEnum getDefault()
```
    Specified by:
    
    getDefault in interface NamedEnum

Enum CalculationEnum

Enum Constant Summary

Method Summary

Methods inherited from class java.lang.Enum

Methods inherited from class java.lang.Object

Enum Constant Detail

NOTHING

COUNT

SUM

AVERAGE

LOWEST

HIGHEST

STANDARD_DEVIATION

VARIANCE

SYSTEM

FIRST

DISTINCT_COUNT

Method Detail

values

valueOf

getName

getByName

getValueOrDefault

getDefault