RowSetWriter (Java SE 26 & JDK 26)
Description: declaration: module: java.sql, package: javax.sql, interface: RowSetWriter
Keywords: javax.sql.RowSetWriter interface

# 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 Details

  - ### 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