Package net.sf.jasperreports.crosstabs.base

Class JRBaseCrosstabBucket

java.lang.Object

net.sf.jasperreports.crosstabs.base.JRBaseCrosstabBucket

All Implemented Interfaces:

Serializable, Cloneable, JRCrosstabBucket, JRCloneable

Direct Known Subclasses:

JRDesignCrosstabBucket

public class JRBaseCrosstabBucket
extends Object
implements JRCrosstabBucket, Serializable

Base read-only implementation of JRCrosstabBucket.

Author:

Lucian Chirita (lucianc@users.sourceforge.net)

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected BucketOrder	bucketOrder
protected JRExpression	comparatorExpression
static final String	EXCEPTION_MESSAGE_KEY_BUCKET_LOAD_ERROR
protected JRExpression	expression
protected JRExpression	orderByExpression
protected Class<?>	valueClass
protected String	valueClassName
protected String	valueClassRealName

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	JRBaseCrosstabBucket()
	JRBaseCrosstabBucket(JRCrosstabBucket bucket, JRBaseObjectFactory factory)

Method Summary

Modifier and Type	Method	Description
Object	clone()
JRExpression	getComparatorExpression()	Returns the comparator expression.
JRExpression	getExpression()	Returns the grouping expression.
BucketOrder	getOrder()	Returns the bucket sorting type.
JRExpression	getOrderByExpression()	Returns an expression that provides order by values for group buckets.
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 transient Class<?> valueClass

bucketOrder

protected BucketOrder bucketOrder

expression

protected JRExpression expression

orderByExpression

protected JRExpression orderByExpression

comparatorExpression

protected JRExpression comparatorExpression

Constructor Details

JRBaseCrosstabBucket

protected JRBaseCrosstabBucket()

JRBaseCrosstabBucket

public JRBaseCrosstabBucket(JRCrosstabBucket bucket,
 JRBaseObjectFactory factory)

Method Details

getValueClassName

public String getValueClassName()

Description copied from interface: JRCrosstabBucket

Returns the string name of the bucket value class.

Specified by:

getValueClassName in interface JRCrosstabBucket

getOrder

public BucketOrder getOrder()

Description copied from interface: JRCrosstabBucket

Returns the bucket sorting type.

The possible values are:

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

Specified by:

getOrder in interface JRCrosstabBucket

Returns:

the bucket sorting type

See Also:

• JRCrosstabBucket.getComparatorExpression()

getExpression

public JRExpression getExpression()

Description copied from interface: JRCrosstabBucket

Returns the grouping expression.

Specified by:

getExpression in interface JRCrosstabBucket

Returns:

the grouping expression

getOrderByExpression

public JRExpression getOrderByExpression()

Description copied from interface: JRCrosstabBucket

Returns an expression that provides order by values for group buckets. If not set, the bucket values as returned by JRCrosstabBucket.getExpression() are used to order the buckets.

The expression is evaluated in the context of the crosstab group and can reference measure variables, which evaluate to group totals.

Specified by:

getOrderByExpression in interface JRCrosstabBucket

Returns:

the order by value expression for the group bucket

getComparatorExpression

public JRExpression getComparatorExpression()

Description copied from interface: JRCrosstabBucket

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 bucket has an order by expression, the comparator will be used to compare values as produced by that expression. If no comparator expression is specified, the natural order will be used.

Specified by:

getComparatorExpression in interface JRCrosstabBucket

Returns:

the comparator expression

See Also:

• JRCrosstabBucket.getOrderByExpression()

getValueClass

public Class<?> getValueClass()

Description copied from interface: JRCrosstabBucket

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 JRCrosstabBucket

Returns:

a Class instance representing the bucket value class

clone

public Object clone()

Specified by:

clone in interface JRCloneable

Overrides:

clone in class Object