Package org.apache.tika.detect
Class CompositeDetector
- java.lang.Object
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- org.apache.tika.detect.CompositeDetector
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- 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
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Constructor Summary
Constructors Constructor Description CompositeDetector(List<Detector> detectors)
CompositeDetector(Detector... detectors)
CompositeDetector(MediaTypeRegistry registry, List<Detector> detectors)
CompositeDetector(MediaTypeRegistry registry, List<Detector> detectors, Collection<Class<? extends Detector>> excludeDetectors)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description MediaType
detect(InputStream input, Metadata metadata)
Detects the content type of the given input document.List<Detector>
getDetectors()
Returns the component detectors.
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Constructor Detail
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CompositeDetector
public CompositeDetector(MediaTypeRegistry registry, List<Detector> detectors, Collection<Class<? extends Detector>> excludeDetectors)
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CompositeDetector
public CompositeDetector(MediaTypeRegistry registry, List<Detector> detectors)
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CompositeDetector
public CompositeDetector(Detector... detectors)
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Method Detail
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detect
public MediaType detect(InputStream input, Metadata metadata) throws IOException
Description copied from interface:Detector
Detects the content type of the given input document. Returnsapplication/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 themark feature
and the detector is expected tomark
the stream before reading any bytes from it, and toreset
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 interfaceDetector
- Parameters:
input
- document input stream, ornull
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
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