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Java™ Platform Standard Ed. 6 |
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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.
Method Summary | |
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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 |
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boolean writeData(RowSetInternal caller) throws SQLException
RowSetWriter
object's
rowset back to the data source from which it got its data.
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
true
if the modified data was written; false
if not, which will be the case if there is a conflict
SQLException
- if a database access error occurs
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Java™ Platform Standard Ed. 6 |
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