Interface ItemWriter

Method Detail

• open

  void open(Serializable checkpoint)
     throws Exception

  The open method prepares the writer to write items. The input parameter represents the last checkpoint for this writer in a given job instance. The checkpoint data is defined by this writer and is provided by the checkpointInfo method. The checkpoint data provides the writer whatever information it needs to resume writing items upon restart. A checkpoint value of null is passed upon initial start.

  Parameters:

  checkpoint - specifies the last checkpoint

  Throws:

  Exception - is thrown for any errors.

• close

  void close()
      throws Exception

  The close method marks the end of use of the ItemWriter. The writer is free to do any cleanup necessary.

  Throws:

  Exception - is thrown for any errors.

• writeItems

  void writeItems(List<Object> items)
           throws Exception

  The writeItems method writes a list of item for the current chunk.

  Parameters:

  items - specifies the list of items to write.

  Throws:

  Exception - is thrown for any errors.

• checkpointInfo

  Serializable checkpointInfo()
                       throws Exception

  The checkpointInfo method returns the current checkpoint data for this writer. It is called before a chunk checkpoint is committed.

  Returns:

  checkpoint data

  Throws:

  Exception - is thrown for any errors.