Package org.hibernate.search.backend.lucene.lowlevel.join.impl

Class ChildDocIds

  • public class ChildDocIds
extends Object
    A provider of children docIds for a given parent docId.

    • Constructor Detail

      • ChildDocIds

        public ChildDocIds​(org.apache.lucene.util.BitSet parentDocs,
                   org.apache.lucene.search.DocIdSetIterator childDocs)

    • Method Detail

      • advanceExactParent

        public boolean advanceExactParent​(int parentDocId)
                           throws IOException
        Parameters:
        parentDocId - The docID of a parent document. Must be strictly greater than the docId passed to this method the last time it was invoked.
        Returns:
        true if there is at least one child for the given parent.
        Throws:
        IOException - If advancing underlying iterators throws an exception.

      • nextChild

        public int nextChild()
              throws IOException
        Returns:
        The docId of the next child of the parent doc set by the last call to advanceExactParent(int), or DocIdSetIterator.NO_MORE_DOCS if there isn't any more child for this parent doc.
        Throws:
        IOException - If advancing underlying iterators throws an exception.

      • nextChild

        public int nextChild​(int target)
              throws IOException
        Parameters:
        target - The docID of a document. Must be greater than or equal to the docId of the last retrieved child.
        Returns:
        The docId of the next child of the parent doc set by the last call to advanceExactParent(int), beyond previousIdExcluded, or DocIdSetIterator.NO_MORE_DOCS if there isn't any more child for this parent doc beyond previousIdExcluded.
        Throws:
        IOException - If advancing underlying iterators throws an exception.