OpenJDK 27 · javax.sql.RowSetReader · APIdia, the JavaDoc alternative

The facility that a disconnected RowSet object calls on to populate itself with rows of data. A reader (an object implementing the RowSetReader interface) may be registered with a RowSet object that supports the reader/writer paradigm. When the RowSet object's execute method is called, it in turn calls the reader's readData method.

Method Summary

Modifier and Type	Method and Description
public void	readData(RowSetInternal the `RowSet` object (1) that has implemented the `RowSetInternal` interface, (2) with which this reader is registered, and (3) whose `execute` method called this reader caller) Reads the new contents of the calling `RowSet` object.

Method Detail

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public void readData(RowSetInternal caller) throws SQLException Reads the new contents of the calling `RowSet` object. In order to call this method, a `RowSet` object must have implemented the `RowSetInternal` interface and registered this `RowSetReader` object as its reader. The `readData` method is invoked internally by the `RowSet.execute` method for rowsets that support the reader/writer paradigm. The `readData` method adds rows to the caller. It can be implemented in a wide variety of ways and can even populate the caller with rows from a nonrelational data source. In general, a reader may invoke any of the rowset's methods, with one exception. Calling the method `execute` will cause an `SQLException` to be thrown because `execute` may not be called recursively. Also, when a reader invokes `RowSet` methods, no listeners are notified; that is, no `RowSetEvent` objects are generated and no `RowSetListener` methods are invoked. This is true because listeners are already being notified by the method `execute`. Parameters caller:RowSetInternal the `RowSet` object (1) that has implemented the `RowSetInternal` interface, (2) with which this reader is registered, and (3) whose `execute` method called this reader Exceptions SQLException: if a database access error occurs or this method invokes the `RowSet.execute` method

public void readData(RowSetInternal caller) throws SQLException

Reads the new contents of the calling RowSet object. In order to call this method, a RowSet object must have implemented the RowSetInternal interface and registered this RowSetReader object as its reader. The readData method is invoked internally by the RowSet.execute method for rowsets that support the reader/writer paradigm.

The readData method adds rows to the caller. It can be implemented in a wide variety of ways and can even populate the caller with rows from a nonrelational data source. In general, a reader may invoke any of the rowset's methods, with one exception. Calling the method execute will cause an SQLException to be thrown because execute may not be called recursively. Also, when a reader invokes RowSet methods, no listeners are notified; that is, no RowSetEvent objects are generated and no RowSetListener methods are invoked. This is true because listeners are already being notified by the method execute.

Parameters

caller:RowSetInternal: the RowSet object (1) that has implemented the RowSetInternal interface, (2) with which this reader is registered, and (3) whose execute method called this reader

Exceptions

SQLException:: if a database access error occurs or this method invokes the RowSet.execute method

public Interface RowSetReader

Method Summary

Method Detail