All Superinterfaces:

Cloneable, JRCloneable

All Known Implementing Classes:

BaseDataLevelBucket, DesignDataLevelBucket
```
public interface DataLevelBucket
extends JRCloneable
```
Author:

Lucian Chirita (lucianc@users.sourceforge.net)

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`List<DataLevelBucketProperty>`	`getBucketProperties()`
`JRExpression`	`getComparatorExpression()`	Returns the comparator expression.
`JRExpression`	`getExpression()`	Returns the grouping expression.
`JRExpression`	`getLabelExpression()`	Optional expression that provides labels for buckets.
`BucketOrder`	`getOrder()`	Returns the bucket sorting type.
`Class<?>`	`getValueClass()`	Returns the class of the bucket value.
`String`	`getValueClassName()`	Returns the string name of the bucket value class.

Methods inherited from interface net.sf.jasperreports.engine.JRCloneable
clone

- Method Detail
  - getValueClass
```
Class<?> getValueClass()
```
    Returns the class of the bucket value. Any class is allowed as long as it is in the classpath at compile and run time.
    
    Returns:
    
    a Class instance representing the bucket value class
  - getValueClassName
```
String getValueClassName()
```
    Returns the string name of the bucket value class.
  - getOrder
```
BucketOrder getOrder()
```
    Returns the bucket sorting type.
    The possible values are:
    
    BucketOrder.ASCENDING
    
    BucketOrder.DESCENDING
    
    BucketOrder.NONE
    Returns:
    
    the bucket sorting type
    
    See Also:
    
    getComparatorExpression()
  - getExpression
```
JRExpression getExpression()
```
    Returns the grouping expression.
    
    Returns:
    
    the grouping expression
  - getLabelExpression
```
JRExpression getLabelExpression()
```
    Optional expression that provides labels for buckets.
    
    Returns:
    
    the bucket label expression
  - getComparatorExpression
```
JRExpression getComparatorExpression()
```
    Returns the comparator expression.
    The result of this expression is used to sort the buckets, in ascending or descending order (given by getOrder(). If the order type is BucketOrder.NONE, no sorting will be performed and the comparator expression will be ignored.
    
    If no comparator expression is specified, the natural order will be used.
    
    If the bucket has an order by expression, the comparator will be used to compare values as produced by that expression.
    
    Returns:
    
    the comparator expression
  - getBucketProperties
```
List<DataLevelBucketProperty> getBucketProperties()
```

Interface DataLevelBucket

Method Summary

Methods inherited from interface net.sf.jasperreports.engine.JRCloneable

Method Detail

getValueClass

getValueClassName

getOrder

getExpression

getLabelExpression

getComparatorExpression

getBucketProperties