org.apache.tika.detect

Class CompositeDetector

java.lang.Object

org.apache.tika.detect.CompositeDetector

All Implemented Interfaces:

Serializable, Detector

Direct Known Subclasses:

DefaultDetector, DefaultProbDetector

public class CompositeDetector
extends Object
implements Detector

Content type detector that combines multiple different detection mechanisms.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
CompositeDetector(Detector... detectors)
CompositeDetector(List<Detector> detectors)
CompositeDetector(MediaTypeRegistry registry, List<Detector> detectors)
CompositeDetector(MediaTypeRegistry registry, List<Detector> detectors, Collection<Class<? extends Detector>> excludeDetectors)

Method Summary

Modifier and Type	Method and Description
MediaType	detect(InputStream input, Metadata metadata) Detects the content type of the given input document.
List<Detector>	getDetectors() Returns the component detectors.

Methods inherited from class java.lang.Object

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

Constructor Detail

CompositeDetector

public CompositeDetector(MediaTypeRegistry registry,
                         List<Detector> detectors,
                         Collection<Class<? extends Detector>> excludeDetectors)

CompositeDetector

public CompositeDetector(MediaTypeRegistry registry,
                         List<Detector> detectors)

CompositeDetector

public CompositeDetector(List<Detector> detectors)

CompositeDetector

public CompositeDetector(Detector... detectors)

Method Detail

detect

public MediaType detect(InputStream input,
                        Metadata metadata)
                 throws IOException

Description copied from interface: Detector

Detects the content type of the given input document. Returns application/octet-stream if the type of the document can not be detected.

If the document input stream is not available, then the first argument may be null. Otherwise the detector may read bytes from the start of the stream to help in type detection. The given stream is guaranteed to support the mark feature and the detector is expected to mark the stream before reading any bytes from it, and to reset the stream before returning. The stream must not be closed by the detector.

The given input metadata is only read, not modified, by the detector.

Specified by:

detect in interface Detector

Parameters:

input - document input stream, or null

metadata - input metadata for the document

Returns:

detected media type, or application/octet-stream

Throws:

IOException - if the document input stream could not be read

getDetectors

public List<Detector> getDetectors()

Returns the component detectors.