JRJpaDataSource (JasperReports EJBQL Java EE (Deprecated) 7.0.0 API)

java.lang.Object
- net.sf.jasperreports.engine.data.JRAbstractBeanDataSource
- - net.sf.jasperreports.j2ee.ejbql.JRJpaDataSource

All Implemented Interfaces:

JRDataSource, JRRewindableDataSource
```
public class JRJpaDataSource
extends JRAbstractBeanDataSource
```
Java Persistence API data source that uses javax.persistence.Query.getResultList().
The query result can be paginated by not retrieving all the rows at once.
Fields are mapped to values in the result following these rules:
- if the query returns a single object/bean (e.g. SELECT m FROM Movie m or SELECT NEW MovieDescription(m.title, m.genre) FROM Movie m), then the fields are mapped to bean property names.
- if the query returns multiple objects per row (e.g. SELECT m.title, m.gender FROM Movie m), the fields are mapped using the following syntax: COLUMN_index[.property], with the indexes starting from 1. Example mappings: COLUMN_1, COLUMN_2, COLUMN_2.title, COLUMN_2.movie.title.
Author:

Marcel Overdijk (marceloverdijk@hotmail.com)

See Also:

JRJpaQueryExecuter.PROPERTY_JPA_QUERY_PAGE_SIZE

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`protected static interface`	`JRJpaDataSource.FieldValueReader`
`protected class`	`JRJpaDataSource.IndexPropertyReader`
`protected class`	`JRJpaDataSource.IndexReader`
`protected class`	`JRJpaDataSource.PropertyReader`

Nested classes/interfaces inherited from class net.sf.jasperreports.engine.data.JRAbstractBeanDataSource
JRAbstractBeanDataSource.DefaultPropertyNameProvider, JRAbstractBeanDataSource.PropertyNameProvider

Field Summary

Fields
Modifier and Type Field Description

protected Object currentRow

static String EXCEPTION_MESSAGE_KEY_INDEX_OUT_OF_BOUNDS
- Fields inherited from class net.sf.jasperreports.engine.data.JRAbstractBeanDataSource
  CURRENT_BEAN_MAPPING, EXCEPTION_MESSAGE_KEY_BEAN_FIELD_VALUE_NOT_RETRIEVED, PROPERTY_JAVABEAN_FIELD_PROPERTY, propertyNameProvider

Constructor Summary

Constructors
Constructor Description

JRJpaDataSource(JRJpaQueryExecuter queryExecuter, int pageSize)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected void`	`fetchPage()`
`Object`	`getFieldValue(JRField field)`
`protected JRJpaDataSource.FieldValueReader`	`getFieldValueReader(JRField field)`
`void`	`moveFirst()`
`boolean`	`next()`

Methods inherited from class net.sf.jasperreports.engine.data.JRAbstractBeanDataSource
getBeanProperty, getFieldValue, getPropertyName, isCurrentBeanMapping

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

EXCEPTION_MESSAGE_KEY_INDEX_OUT_OF_BOUNDS

public static final String EXCEPTION_MESSAGE_KEY_INDEX_OUT_OF_BOUNDS

See Also:: Constant Field Values

currentRow
```
protected Object currentRow
```

Constructor Detail

JRJpaDataSource

public JRJpaDataSource(JRJpaQueryExecuter queryExecuter,
                       int pageSize)

Method Detail

fetchPage
```
protected void fetchPage()
```

next
```
public boolean next()
```

moveFirst
```
public void moveFirst()
```

getFieldValue

public Object getFieldValue(JRField field)
                     throws JRException

Throws:: JRException

getFieldValueReader

protected JRJpaDataSource.FieldValueReader getFieldValueReader(JRField field)