| /* |
| * 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.rows; |
| |
| import org.apache.cassandra.db.*; |
| import org.apache.cassandra.db.filter.ColumnFilter; |
| import org.apache.cassandra.db.transform.Transformation; |
| |
| /** |
| * Function to skip cells (from an iterator) that are not part of those queried by the user |
| * according to the provided {@code ColumnFilter}. See {@link UnfilteredRowIterators#withoutSkippedValues} |
| * for more details. |
| */ |
| public class WithOnlyQueriedData<I extends BaseRowIterator<?>> extends Transformation<I> |
| { |
| private final ColumnFilter filter; |
| |
| public WithOnlyQueriedData(ColumnFilter filter) |
| { |
| this.filter = filter; |
| } |
| |
| @Override |
| protected Row applyToStatic(Row row) |
| { |
| return row.withOnlyQueriedData(filter); |
| } |
| |
| @Override |
| protected Row applyToRow(Row row) |
| { |
| return row.withOnlyQueriedData(filter); |
| } |
| }; |