1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.tika.parser;
18
19 import java.io.IOException;
20 import java.io.InputStream;
21 import java.util.Collections;
22 import java.util.Set;
23
24 import org.apache.tika.exception.TikaException;
25 import org.apache.tika.metadata.Metadata;
26 import org.apache.tika.mime.MediaType;
27 import org.xml.sax.ContentHandler;
28 import org.xml.sax.SAXException;
29
30 /**
31 * Dummy parser that always throws a {@link TikaException} without even
32 * attempting to parse the given document stream. Useful as a sentinel parser
33 * for unknown document types.
34 */
35 public class ErrorParser implements Parser {
36
37 /**
38 * Singleton instance of this class.
39 */
40 public static final ErrorParser INSTANCE = new ErrorParser();
41
42 public Set<MediaType> getSupportedTypes(ParseContext context) {
43 return Collections.emptySet();
44 }
45
46 public void parse(
47 InputStream stream, ContentHandler handler,
48 Metadata metadata, ParseContext context)
49 throws TikaException {
50 throw new TikaException("Parse error");
51 }
52
53 /**
54 * @deprecated This method will be removed in Apache Tika 1.0.
55 */
56 public void parse(
57 InputStream stream, ContentHandler handler, Metadata metadata)
58 throws IOException, SAXException, TikaException {
59 parse(stream, handler, metadata, new ParseContext());
60 }
61
62 }