# Package org.apache.tapestry5.services.meta

Services for extracting component metadata.

- Interface Summary
  Interface | Description
  --- | ---
  MetaDataExtractor<T extends java.lang.annotation.Annotation> | Used to extract a meta data value from a component annotation.
  MetaWorker | Service that makes it easy to identify a class annotation and use its presence, or the value of an attribute, to set a meta-data key.

- Class Summary
  Class | Description
  --- | ---
  FixedExtractor<T extends java.lang.annotation.Annotation> | Implementation of `MetaDataExtractor` that is used to set a fixed value for a fixed meta-data key, when a given annotation is present.