| /* |
| * 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 com.google.common.collect.UnmodifiableIterator; |
| |
| import org.apache.cassandra.config.CFMetaData; |
| import org.apache.cassandra.db.*; |
| |
| /** |
| * Abstract class to make writing unfiltered iterators that wrap another iterator |
| * easier. By default, the wrapping iterator simply delegate every call to |
| * the wrapped iterator so concrete implementations will have to override |
| * some of the methods. |
| * <p> |
| * Note that if most of what you want to do is modifying/filtering the returned |
| * {@code Unfiltered}, {@link org.apache.cassandra.db.transform.Transformation.apply} can be a simpler option. |
| */ |
| public abstract class WrappingUnfilteredRowIterator extends UnmodifiableIterator<Unfiltered> implements UnfilteredRowIterator |
| { |
| protected final UnfilteredRowIterator wrapped; |
| |
| protected WrappingUnfilteredRowIterator(UnfilteredRowIterator wrapped) |
| { |
| this.wrapped = wrapped; |
| } |
| |
| public CFMetaData metadata() |
| { |
| return wrapped.metadata(); |
| } |
| |
| public PartitionColumns columns() |
| { |
| return wrapped.columns(); |
| } |
| |
| public boolean isReverseOrder() |
| { |
| return wrapped.isReverseOrder(); |
| } |
| |
| public DecoratedKey partitionKey() |
| { |
| return wrapped.partitionKey(); |
| } |
| |
| public DeletionTime partitionLevelDeletion() |
| { |
| return wrapped.partitionLevelDeletion(); |
| } |
| |
| public Row staticRow() |
| { |
| return wrapped.staticRow(); |
| } |
| |
| public EncodingStats stats() |
| { |
| return wrapped.stats(); |
| } |
| |
| public boolean hasNext() |
| { |
| return wrapped.hasNext(); |
| } |
| |
| public Unfiltered next() |
| { |
| return wrapped.next(); |
| } |
| |
| public void close() |
| { |
| wrapped.close(); |
| } |
| } |