RowSetWriter (Java SE 12 & JDK 12 )
Keywords: javax.sql.RowSetWriter interface

Module java.sql
Package javax.sql

## Interface RowSetWriter

- All Known Subinterfaces:
    `TransactionalWriter`, `XmlWriter`

      public interface RowSetWriter

  An object that implements the `RowSetWriter` interface, called a writer. A writer may be registered with a `RowSet` object that supports the reader/writer paradigm.

  If a disconnected `RowSet` object modifies some of its data, and it has a writer associated with it, it may be implemented so that it calls on the writer's `writeData` method internally to write the updates back to the data source. In order to do this, the writer must first establish a connection with the rowset's data source.

  If the data to be updated has already been changed in the data source, there is a conflict, in which case the writer will not write the changes to the data source. The algorithm the writer uses for preventing or limiting conflicts depends entirely on its implementation.

  Since:
    1.4

- - ### Method Summary

    Modifier and Type | Method | Description
    --- | --- | ---
    `boolean` | `writeData​(RowSetInternal caller)` | Writes the changes in this `RowSetWriter` object's rowset back to the data source from which it got its data.

- - ### Method Detail

    - #### writeData

          boolean writeData​(RowSetInternal caller)
                     throws SQLException

      Writes the changes in this `RowSetWriter` object's rowset back to the data source from which it got its data.
      Parameters:
        `caller` - the `RowSet` object (1) that has implemented the `RowSetInternal` interface, (2) with which this writer is registered, and (3) that called this method internally
      Returns:
        `true` if the modified data was written; `false` if not, which will be the case if there is a conflict
      Throws:
        `SQLException` - if a database access error occurs