Class HTMLTextExtractor

  extended by org.apache.jackrabbit.extractor.AbstractTextExtractor
      extended by org.apache.jackrabbit.extractor.HTMLTextExtractor
All Implemented Interfaces:

public class HTMLTextExtractor
extends AbstractTextExtractor

Text extractor for HyperText Markup Language (HTML).

Constructor Summary
          Creates a new HTMLTextExtractor instance.
Method Summary
 Reader extractText(InputStream stream, String type, String encoding)
          Returns a reader for the text content of the given binary document.
Methods inherited from class org.apache.jackrabbit.extractor.AbstractTextExtractor
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail


public HTMLTextExtractor()
Creates a new HTMLTextExtractor instance.

Method Detail


public Reader extractText(InputStream stream,
                          String type,
                          String encoding)
                   throws IOException
Returns a reader for the text content of the given binary document. The content type and character encoding (if available and applicable) are given as arguments. The given content type is guaranteed to be one of the types reported by TextExtractor.getContentTypes() unless the implementation explicitly permits other content types.

The implementation can choose either to read and parse the given document immediately or to return a reader that does it incrementally. The only constraint is that the implementation must close the given stream latest when the returned reader is closed. The caller on the other hand is responsible for closing the returned reader.

The implemenation should only throw an exception on transient errors, i.e. when it can expect to be able to successfully extract the text content of the same binary at another time. An effort should be made to recover from syntax errors and other similar problems.

This method should be thread-safe, i.e. it is possible that this method is invoked simultaneously by different threads to extract the text content of different documents. On the other hand the returned reader does not need to be thread-safe.

stream - binary document from which to extract text
type - MIME type of the given document, lower case
encoding - the character encoding of the binary data, or null if not available
reader for the extracted text content
IOException - on transient errors

Copyright © 2004-2007 The Apache Software Foundation. All Rights Reserved.