net.sf.jasperreports.engine.data

## Class JRBeanArrayDataSource

- java.lang.Object
- - net.sf.jasperreports.engine.data.JRAbstractBeanDataSource
  - - net.sf.jasperreports.engine.data.JRBeanArrayDataSource

- All Implemented Interfaces:
    JRDataSource, JRRewindableDataSource

      public class JRBeanArrayDataSource
      extends JRAbstractBeanDataSource

  A data source implementation that wraps an array of JavaBean objects.

  It is common to access application data through object persistence layers like EJB, Hibernate, or JDO. Such applications may need to generate reports using data they already have available as arrays or collections of in-memory JavaBean objects.

  This JavaBean-compliant data source cand be used when data comes in an array of JavaBean objects.

  Version:
    $Id: JRBeanArrayDataSource.java 7017 2014-04-15 10:18:40Z shertage $
  Author:
    Teodor Danciu (teodord@users.sourceforge.net)

- - ### Field Summary

    - ### Fields inherited from class net.sf.jasperreports.engine.data.JRAbstractBeanDataSource

      `CURRENT_BEAN_MAPPING, FIELD_DESCRIPTION_PROPERTY_NAME_PROVIDER, FIELD_NAME_PROPERTY_NAME_PROVIDER, propertyNameProvider`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `JRBeanArrayDataSource(java.lang.Object[] beanArray)`
    `JRBeanArrayDataSource(java.lang.Object[] beanArray, boolean isUseFieldDescription)`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `JRBeanArrayDataSource` | `cloneDataSource()` Clones this data source by creating a new instance that reuses the same underlying bean array.
    `java.lang.Object[]` | `getData()` Returns the underlying bean array used by this data source.
    `java.lang.Object` | `getFieldValue(JRField field)` Gets the field value for the current position.
    `int` | `getRecordCount()` Returns the total number of records/beans that this data source contains.
    `void` | `moveFirst()` Moves back to the first element in the data source.
    `boolean` | `next()` Tries to position the cursor on the next element in the data source.

    - ### 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`

- - ### Constructor Detail

    - #### JRBeanArrayDataSource

          public JRBeanArrayDataSource(java.lang.Object[] beanArray)

    - #### JRBeanArrayDataSource

          public JRBeanArrayDataSource(java.lang.Object[] beanArray,
                               boolean isUseFieldDescription)

  - ### Method Detail

    - #### next

          public boolean next()

      Description copied from interface: `JRDataSource`
      Tries to position the cursor on the next element in the data source.
      Returns:
        true if there is a next record, false otherwise

    - #### getFieldValue

          public java.lang.Object getFieldValue(JRField field)
                                         throws JRException

      Description copied from interface: `JRDataSource`
      Gets the field value for the current position.
      Returns:
        an object containing the field value. The object type must be the field object type.
      Throws:
        `JRException`

    - #### moveFirst

          public void moveFirst()

      Description copied from interface: `JRRewindableDataSource`
      Moves back to the first element in the data source.

    - #### getData

          public java.lang.Object[] getData()

      Returns the underlying bean array used by this data source.
      Returns:
        the underlying bean array

    - #### getRecordCount

          public int getRecordCount()

      Returns the total number of records/beans that this data source contains.
      Returns:
        the total number of records of this data source

    - #### cloneDataSource

          public JRBeanArrayDataSource cloneDataSource()

      Clones this data source by creating a new instance that reuses the same underlying bean array.
      Returns:
        a clone of this data source

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