| /* |
| * 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.lucene.analysis.miscellaneous; |
| |
| import org.apache.lucene.analysis.FilteringTokenFilter; |
| import org.apache.lucene.analysis.TokenStream; |
| import org.apache.lucene.analysis.tokenattributes.FlagsAttribute; |
| |
| /** |
| * Allows Tokens with a given combination of flags to be dropped. If all flags specified are present |
| * the token is dropped, otherwise it is retained. |
| * |
| * @see DropIfFlaggedFilterFactory |
| * @since 8.8.0 |
| */ |
| public final class DropIfFlaggedFilter extends FilteringTokenFilter { |
| private final FlagsAttribute flagsAtt = addAttribute(FlagsAttribute.class); |
| private final int dropFlags; |
| |
| /** |
| * Construct a token stream filtering the given input. |
| * |
| * @param input the source stream |
| * @param dropFlags a combination of flags that indicates that the token should be dropped. |
| */ |
| public DropIfFlaggedFilter(TokenStream input, int dropFlags) { |
| super(input); |
| this.dropFlags = dropFlags; |
| } |
| |
| @Override |
| protected boolean accept() { |
| return (flagsAtt.getFlags() & dropFlags) != dropFlags; |
| } |
| } |