/* * * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * 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 limitations * under the License. * */ package org.apache.cassandra.db.transform; import org.apache.cassandra.db.rows.BaseRowIterator; import org.apache.cassandra.db.rows.Row; import org.apache.cassandra.db.rows.RowIterator; import org.apache.cassandra.db.rows.UnfilteredRowIterator; public final class FilteredRows extends BaseRows<Row, BaseRowIterator<?>> implements RowIterator { FilteredRows(RowIterator input) { super(input); } FilteredRows(UnfilteredRowIterator input, Filter filter) { super(input); add(filter); } FilteredRows(Filter filter, UnfilteredRows input) { super(input); add(filter); } @Override public boolean isEmpty() { return staticRow().isEmpty() && !hasNext(); } /** * Filter any RangeTombstoneMarker from the iterator, transforming it into a RowIterator. */ public static RowIterator filter(UnfilteredRowIterator iterator, int nowInSecs) { return new Filter(false, nowInSecs).applyToPartition(iterator); } }