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 * Licensed to the Apache Software Foundation (ASF) under one
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 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
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 */
package org.apache.cassandra.db.rows;

An iterator over rows belonging to a partition.
A RowIterator is an UnfilteredRowIterator to which any deletion information has been
filtered out. As such, all cell of all rows returned by this iterator are,
by definition, live, and hence code using a RowIterator don't have to worry
about tombstones and other deletion information.
Note that as for UnfilteredRowIterator, the rows returned must be in clustering order (or
reverse clustering order if isReverseOrder is true), and the Row objects returned
by next() are only valid until the next call to hasNext() or next().
/**
 * An iterator over rows belonging to a partition.
 *
 * A RowIterator is an UnfilteredRowIterator to which any deletion information has been
 * filtered out. As such, all cell of all rows returned by this iterator are,
 * by definition, live, and hence code using a RowIterator don't have to worry
 * about tombstones and other deletion information.
 *
 * Note that as for UnfilteredRowIterator, the rows returned must be in clustering order (or
 * reverse clustering order if isReverseOrder is true), and the Row objects returned
 * by next() are only valid until the next call to hasNext() or next().
 */
public interface RowIterator extends BaseRowIterator<Row>
{
    
Returns whether the provided iterator has no data.
/**
     * Returns whether the provided iterator has no data.
     */
    public default boolean isEmpty()
    {
        return staticRow().isEmpty() && !hasNext();
    }
}