Class MultiFields

  • All Implemented Interfaces:

    public final class MultiFields
    extends Fields
    Provides a single Fields term index view over an IndexReader. This is useful when you're interacting with an IndexReader implementation that consists of sequential sub-readers (eg DirectoryReader or MultiReader) and you must treat it as a LeafReader.

    NOTE: for composite readers, you'll get better performance by gathering the sub readers using IndexReader.getContext() to get the atomic leaves and then operate per-LeafReader, instead of using this class.

    NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.
    • Constructor Detail

      • MultiFields

        public MultiFields​(Fields[] subs,
                           ReaderSlice[] subSlices)
        Sole constructor.
    • Method Detail

      • size

        public int size()
        Description copied from class: Fields
        Returns the number of fields or -1 if the number of distinct field names is unknown. If >= 0, Fields.iterator() will return as many field names.
        Specified by:
        size in class Fields