org.apache.jackrabbit.core.query.lucene
Class TextFilterExtractor

java.lang.Object
  org.apache.jackrabbit.core.query.lucene.TextFilterExtractor

All Implemented Interfaces:

TextExtractor

public class TextFilterExtractor
extends Object
implements TextExtractor

Adapter class for achieving backwards compatibility with classes implementing the deprectated TextFilter interface. This class implements the TextExtractor interface through calls to an underlying TextFilter instance.

Constructor Summary

TextFilterExtractor(String[] types, TextFilter filter)
Creates a text extractor adapter that supports the given content types using the given text filter.

TextFilterExtractor(String type, TextFilter filter)
Creates a text extractor adapter that supports the given content type using the given text filter.

Method Summary

Reader	extractText(InputStream stream, String type, String encoding) Extracts the text content of the given binary stream by calling the underlying TextFilter instance.
String[]	getContentTypes() Returns the supported content types.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TextFilterExtractor

public TextFilterExtractor(String[] types,
                           TextFilter filter)

Creates a text extractor adapter that supports the given content types using the given text filter.

Parameters:

types - supported content types

filter - text filter to be adapted

TextFilterExtractor

public TextFilterExtractor(String type,
                           TextFilter filter)

Creates a text extractor adapter that supports the given content type using the given text filter.

Parameters:

type - supported content type

filter - text filter to be adapted

Method Detail

getContentTypes

public String[] getContentTypes()

Returns the supported content types.

Specified by:

getContentTypes in interface TextExtractor

Returns:

supported content types

extractText

public Reader extractText(InputStream stream,
                          String type,
                          String encoding)
                   throws IOException

Extracts the text content of the given binary stream by calling the underlying TextFilter instance. A dummy PropertyState instance is created to comply with the TextFilter.doFilter(PropertyState, String) method signature.

Specified by:

extractText in interface TextExtractor

Parameters:

stream - binary stream

type - content type

encoding - character encoding, or null

Returns:

reader reader for the extracted text content

Throws:

IOException - if the adapted call fails