/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
/**
* The facility that a disconnected <code>RowSet</code> object calls on
* to populate itself with rows of data. A reader (an object implementing the
* <code>RowSetReader</code> interface) may be registered with
* When the <code>RowSet</code> object's <code>execute</code> method is
* called, it in turn calls the reader's <code>readData</code> method.
*
* @since 1.4
*/
public interface RowSetReader {
/**
* Reads the new contents of the calling <code>RowSet</code> object.
* In order to call this method, a <code>RowSet</code>
* object must have implemented the <code>RowSetInternal</code> interface
* and registered this <code>RowSetReader</code> object as its reader.
* The <code>readData</code> method is invoked internally
* by the <code>RowSet.execute</code> method for rowsets that support the
*
* <P>The <code>readData</code> 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 <code>execute</code> will
* cause an <code>SQLException</code> to be thrown
* because <code>execute</code> may not be called recursively. Also,
* when a reader invokes <code>RowSet</code> methods, no listeners
* are notified; that is, no <code>RowSetEvent</code> objects are
* generated and no <code>RowSetListener</code> methods are invoked.
* This is true because listeners are already being notified by the method
* <code>execute</code>.
*
* @param caller the <code>RowSet</code> object (1) that has implemented the
* <code>RowSetInternal</code> interface, (2) with which this reader is
* registered, and (3) whose <code>execute</code> method called this reader
* @exception SQLException if a database access error occurs or this method
* invokes the <code>RowSet.execute</code> method
*/
}