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 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 the value associated with the attributed named field.getName()
      Specified by:
      getFieldValue in interface net.sf.jasperreports.engine.JRDataSource
      Parameters:
      field - the report field which value to retrieve
      Returns:
      the value associated with the attribute named 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