Interface RowSetWriter
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- All Known Subinterfaces:
- TransactionalWriter, XmlWriter
public interface RowSetWriterAn object that implements theRowSetWriterinterface, called a writer. A writer may be registered with aRowSetobject that supports the reader/writer paradigm.If a disconnected
RowSetobject modifies some of its data, and it has a writer associated with it, it may be implemented so that it calls on the writer'swriteDatamethod 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
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method and Description booleanwriteData(RowSetInternal caller)Writes the changes in thisRowSetWriterobject's rowset back to the data source from which it got its data.
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Method Detail
writeData
boolean writeData(RowSetInternal caller) throws SQLException
Writes the changes in thisRowSetWriterobject's rowset back to the data source from which it got its data.- Parameters:
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caller- theRowSetobject (1) that has implemented theRowSetInternalinterface, (2) with which this writer is registered, and (3) that called this method internally - Returns:
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trueif the modified data was written;falseif not, which will be the case if there is a conflict - Throws:
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SQLException- if a database access error occurs
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