| /* |
| * 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.druid.segment; |
| |
| /** |
| * Implementation of {@link TransformableRowIterator} that just delegates all methods to some baseIterator (adapter |
| * pattern). Subclass should override some methods. |
| */ |
| public abstract class ForwardingRowIterator implements TransformableRowIterator |
| { |
| protected final TransformableRowIterator baseIterator; |
| |
| protected ForwardingRowIterator(TransformableRowIterator baseIterator) |
| { |
| this.baseIterator = baseIterator; |
| } |
| |
| @Override |
| public void mark() |
| { |
| baseIterator.mark(); |
| } |
| |
| @Override |
| public TimeAndDimsPointer getMarkedPointer() |
| { |
| return baseIterator.getMarkedPointer(); |
| } |
| |
| @Override |
| public boolean hasTimeAndDimsChangedSinceMark() |
| { |
| return baseIterator.hasTimeAndDimsChangedSinceMark(); |
| } |
| |
| @Override |
| public RowPointer getPointer() |
| { |
| return baseIterator.getPointer(); |
| } |
| |
| @Override |
| public boolean moveToNext() |
| { |
| return baseIterator.moveToNext(); |
| } |
| |
| @Override |
| public void close() |
| { |
| baseIterator.close(); |
| } |
| } |