org.semanticdesktop.aperture.extractor.office
Class OfficeExtractor

java.lang.Object
  org.semanticdesktop.aperture.extractor.office.OfficeExtractor

All Implemented Interfaces:

Extractor

public class OfficeExtractor
extends Object
implements Extractor

An Extractor implementation that can be used to process MS Office documents when we don't know its specific subtype (e.g. Word, Excel, PowerPoint) or when we don't have an Extractor for that particular subtype. This extractor is capable of extracting all metadata but not the textual contents.

Constructor Summary

OfficeExtractor()

Method Summary

void	extract(URI id, InputStream stream, Charset charset, String mimeType, RDFContainer result) Extracts full-text and metadata from the specified binary stream and stores the extracted information as RDF statements in the specified RDFContainer.

Methods inherited from class java.lang.Object

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

Constructor Detail

OfficeExtractor

public OfficeExtractor()

Method Detail

extract

public void extract(URI id,
                    InputStream stream,
                    Charset charset,
                    String mimeType,
                    RDFContainer result)
             throws ExtractorException

Description copied from interface: Extractor

Extracts full-text and metadata from the specified binary stream and stores the extracted information as RDF statements in the specified RDFContainer. The optionally specified Charset and MIME type can be used to direct how the stream should be parsed.

The specified InputStream is expected to already use some kind of buffering so that the Extractors are not required to internally buffer bytes to improve performance.

Specified by:

extract in interface Extractor

Parameters:

id - the URI identifying the object (e.g. a file or web page) from which the stream was obtained. The generated statements should describe this URI.

stream - the InputStream delivering the raw bytes.

charset - the charset in which the inputstream is encoded (optional).

mimeType - the MIME type of the passed stream (optional).

result - the container in which this Extractor can put its created RDF statements.

Throws:

ExtractorException - in case of any error during the extraction process.