Package net.sf.jasperreports.engine.analytics.dataset

Class BaseDataLevelBucket

java.lang.Object

net.sf.jasperreports.engine.analytics.dataset.BaseDataLevelBucket

All Implemented Interfaces:

Serializable, Cloneable, DataLevelBucket, JRCloneable

Direct Known Subclasses:

DesignDataLevelBucket

public class BaseDataLevelBucket
extends Object
implements DataLevelBucket, Serializable

Author:

Lucian Chirita (lucianc@users.sourceforge.net)

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected List<DataLevelBucketProperty>	bucketProperties
protected JRExpression	comparatorExpression
static final String	EXCEPTION_MESSAGE_KEY_BUCKET_LOAD_ERROR
protected JRExpression	expression
protected JRExpression	labelExpression
protected BucketOrder	order
protected Class<?>	valueClass
protected String	valueClassName
protected String	valueClassRealName

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	BaseDataLevelBucket()
	BaseDataLevelBucket(DataLevelBucket bucket, JRBaseObjectFactory factory)

Method Summary

Modifier and Type	Method	Description
Object	clone()
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 class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

EXCEPTION_MESSAGE_KEY_BUCKET_LOAD_ERROR

public static final String EXCEPTION_MESSAGE_KEY_BUCKET_LOAD_ERROR

See Also:

• Constant Field Values

valueClassName

protected String valueClassName

valueClassRealName

protected String valueClassRealName

valueClass

protected Class<?> valueClass

order

protected BucketOrder order

expression

protected JRExpression expression

labelExpression

protected JRExpression labelExpression

comparatorExpression

protected JRExpression comparatorExpression

bucketProperties

protected List<DataLevelBucketProperty> bucketProperties

Constructor Details

BaseDataLevelBucket

protected BaseDataLevelBucket()

BaseDataLevelBucket

public BaseDataLevelBucket(DataLevelBucket bucket,
 JRBaseObjectFactory factory)

Method Details

getValueClassName

public String getValueClassName()

Description copied from interface: DataLevelBucket

Returns the string name of the bucket value class.

Specified by:

getValueClassName in interface DataLevelBucket

getOrder

public BucketOrder getOrder()

Description copied from interface: DataLevelBucket

Returns the bucket sorting type.

The possible values are:

• BucketOrder.ASCENDING
• BucketOrder.DESCENDING
• BucketOrder.NONE

Specified by:

getOrder in interface DataLevelBucket

Returns:

the bucket sorting type

See Also:

• DataLevelBucket.getComparatorExpression()

getExpression

public JRExpression getExpression()

Description copied from interface: DataLevelBucket

Returns the grouping expression.

Specified by:

getExpression in interface DataLevelBucket

Returns:

the grouping expression

getLabelExpression

public JRExpression getLabelExpression()

Description copied from interface: DataLevelBucket

Optional expression that provides labels for buckets.

Specified by:

getLabelExpression in interface DataLevelBucket

Returns:

the bucket label expression

getComparatorExpression

public JRExpression getComparatorExpression()

Description copied from interface: DataLevelBucket

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.

Specified by:

getComparatorExpression in interface DataLevelBucket

Returns:

the comparator expression

getValueClass

public Class<?> getValueClass()

Description copied from interface: DataLevelBucket

Returns the class of the bucket value. Any class is allowed as long as it is in the classpath at compile and run time.

Specified by:

getValueClass in interface DataLevelBucket

Returns:

a Class instance representing the bucket value class

getBucketProperties

public List<DataLevelBucketProperty> getBucketProperties()

Specified by:

getBucketProperties in interface DataLevelBucket

clone

public Object clone()

Specified by:

clone in interface JRCloneable

Overrides:

clone in class Object