Module is.codion.plugin.jasperreports

Package is.codion.plugin.jasperreports

Class JasperReportsDataSource<T>

java.lang.Object

is.codion.plugin.jasperreports.JasperReportsDataSource<T>

Type Parameters:

T - the type to fetch the data from

All Implemented Interfaces:

net.sf.jasperreports.engine.JRDataSource

public class JasperReportsDataSource<T>
extends Object
implements net.sf.jasperreports.engine.JRDataSource

A default JRDataSource implementation which iterates through the iterator received via the constructor.

Constructor Summary

Constructors

Constructor	Description
JasperReportsDataSource(Iterator<T> reportIterator, BiFunction<T,net.sf.jasperreports.engine.JRField,Object> valueProvider)	Instantiates a new JasperReportsDataSource.
JasperReportsDataSource(Iterator<T> reportIterator, BiFunction<T,net.sf.jasperreports.engine.JRField,Object> valueProvider, Consumer<T> onNext)	Instantiates a new JasperReportsDataSource.

Method Summary

Modifier and Type	Method	Description
final T	currentItem()
final Object	getFieldValue(net.sf.jasperreports.engine.JRField field)	Returns value of the attribute with the name field.getName()
final boolean	next()

Methods inherited from class java.lang.Object

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

Constructor Details

JasperReportsDataSource

public JasperReportsDataSource(Iterator<T> reportIterator,
 BiFunction<T,net.sf.jasperreports.engine.JRField,Object> valueProvider)

Instantiates a new JasperReportsDataSource.

Parameters:

reportIterator - the iterator providing the report data

valueProvider - a Function returning the value for a given field from the given item

JasperReportsDataSource

public JasperReportsDataSource(Iterator<T> reportIterator,
 BiFunction<T,net.sf.jasperreports.engine.JRField,Object> valueProvider,
 Consumer<T> onNext)

Instantiates a new JasperReportsDataSource.

Parameters:

reportIterator - the iterator providing the report data

valueProvider - a Function returning the value for a given field from the given item

onNext - called each time next has been called

Method Details

next

public final boolean next()

Specified by:

next in interface net.sf.jasperreports.engine.JRDataSource

getFieldValue

public final Object getFieldValue(net.sf.jasperreports.engine.JRField field)
                           throws net.sf.jasperreports.engine.JRException

Returns value of the attribute with the name field.getName()

Specified by:

getFieldValue in interface net.sf.jasperreports.engine.JRDataSource

Parameters:

field - the report field which value to retrieve

Returns:

the value of the attribute with the name field.getName()

Throws:

net.sf.jasperreports.engine.JRException - in case of an exception

currentItem

public final T currentItem()

Returns:

the current item

Throws:

IllegalStateException - in case next has not been called and no current item is available