| /* |
| * 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.index.sasi.analyzer.filter; |
| |
| /** |
| * Creates a Pipeline object for applying n pieces of logic |
| * from the provided methods to the builder in a guaranteed order |
| */ |
| public class FilterPipelineBuilder |
| { |
| private final FilterPipelineTask<?,?> parent; |
| private FilterPipelineTask<?,?> current; |
| |
| public FilterPipelineBuilder(FilterPipelineTask<?, ?> first) |
| { |
| this(first, first); |
| } |
| |
| private FilterPipelineBuilder(FilterPipelineTask<?, ?> first, FilterPipelineTask<?, ?> current) |
| { |
| this.parent = first; |
| this.current = current; |
| } |
| |
| public FilterPipelineBuilder add(String name, FilterPipelineTask<?,?> nextTask) |
| { |
| this.current.setLast(name, nextTask); |
| this.current = nextTask; |
| return this; |
| } |
| |
| public FilterPipelineTask<?,?> build() |
| { |
| return this.parent; |
| } |
| } |