| /* |
| * 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 opennlp.tools.namefind; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| |
| import opennlp.tools.util.FilterObjectStream; |
| import opennlp.tools.util.ObjectStream; |
| import opennlp.tools.util.Span; |
| |
| /** |
| * A stream which removes Name Samples which do not have a certain type. |
| */ |
| public class NameSampleTypeFilter extends FilterObjectStream<NameSample, NameSample> { |
| |
| private final Set<String> types; |
| |
| public NameSampleTypeFilter(String[] types, ObjectStream<NameSample> samples) { |
| super(samples); |
| this.types = Collections.unmodifiableSet(new HashSet<>(Arrays.asList(types))); |
| } |
| |
| public NameSampleTypeFilter(Set<String> types, ObjectStream<NameSample> samples) { |
| super(samples); |
| this.types = Collections.unmodifiableSet(new HashSet<>(types)); |
| } |
| |
| public NameSample read() throws IOException { |
| |
| NameSample sample = samples.read(); |
| |
| if (sample != null) { |
| |
| List<Span> filteredNames = new ArrayList<>(); |
| |
| for (Span name : sample.getNames()) { |
| if (types.contains(name.getType())) { |
| filteredNames.add(name); |
| } |
| } |
| |
| return new NameSample(sample.getId(), sample.getSentence(), |
| filteredNames.toArray(new Span[filteredNames.size()]), null, sample.isClearAdaptiveDataSet()); |
| } |
| else { |
| return null; |
| } |
| } |
| } |