All Implemented Interfaces:

ItemReader

public abstract class AbstractItemReader
extends Object
implements ItemReader 

• Constructor Summary

  Constructors

  Constructor and Description
  AbstractItemReader ()

• Method Summary

  All Methods

  Modifier and Type	Method and Description
  Serializable	checkpointInfo () Override this method if the ItemReader supports checkpoints.
  void	close () Override this method if the ItemReader requires any close time processing.
  void	open (Serializable checkpoint) Override this method if the ItemReader requires any open time processing.
  abstract Object	readItem () Implement read logic for the ItemReader in this method.

  • Methods inherited from class java.lang.Object

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

• Constructor Detail

  • AbstractItemReader

    public AbstractItemReader()

• Method Detail

  • open

    public void open(Serializable checkpoint)
     throws Exception 

    Override this method if the ItemReader requires any open time processing. The default implementation does nothing.

    Specified by:

    open in interface ItemReader

    Parameters:

    last - checkpoint for this ItemReader - may be null.

    Throws:

    Exception - (or subclass) if an error occurs.

  • close

    public void close()
     throws Exception 

    Override this method if the ItemReader requires any close time processing. The default implementation does nothing.

    Specified by:

    close in interface ItemReader

    Throws:

    Exception - (or subclass) if an error occurs.

  • readItem

    public abstract Object readItem()
     throws Exception 

    Implement read logic for the ItemReader in this method.

    Specified by:

    readItem in interface ItemReader

    Returns:

    next item or null

    Throws:

    Exception - (or subclass) if an error occurs.

  • checkpointInfo

    public Serializable checkpointInfo()
     throws Exception 

    Override this method if the ItemReader supports checkpoints. The default implementation returns null.

    Specified by:

    checkpointInfo in interface ItemReader

    Returns:

    checkpoint data

    Throws:

    Exception - (or subclass) if an error occurs.