Interface MetaEncodingDetector

All Superinterfaces:
EncodingDetector, SelfConfiguring, Serializable
All Known Implementing Classes:
JunkFilterEncodingDetector
public interface MetaEncodingDetector extends EncodingDetector
Marker interface for encoding detectors that arbitrate among candidates collected by base detectors rather than detecting encoding directly from the stream.

When a MetaEncodingDetector is present in a CompositeEncodingDetector, the composite switches from first-match-wins to collect-all mode: all base detectors run first and their results are collected in an EncodingDetectorContext, then the meta detector's EncodingDetector.detect(TikaInputStream, Metadata, ParseContext) method is called to pick the winner.

The EncodingDetectorContext is placed in the ParseContext before the meta detector is invoked, so implementations can retrieve it via parseContext.get(EncodingDetectorContext.class).

Since:
Apache Tika 3.2