Class AncestorNodeJoin

  • All Implemented Interfaces:

    public class AncestorNodeJoin
    extends AbstractCondition
    AncestorNodeJoin implements an ancestor node join condition.
    • Constructor Detail

      • AncestorNodeJoin

        public AncestorNodeJoin​(MultiColumnQueryHits context,
                                Name contextSelectorName,
                                org.apache.lucene.index.IndexReader reader,
                                HierarchyResolver resolver)
                         throws IOException
        Creates a new ancestor node join condition.
        context - the inner query hits.
        contextSelectorName - the selector name for the inner query hits.
        reader - the index reader.
        resolver - the hierarchy resolver.
        IOException - if an error occurs while reading from the index.
    • Method Detail

      • getMatchingScoreNodes

        public ScoreNode[][] getMatchingScoreNodes​(ScoreNode ancestor)
                                            throws IOException
        Returns the matching inner score nodes for the given outer score node sn.

        The outer query hits loop contains the ancestor score nodes.

        ancestor - the current score nodes of the outer source.
        the matching score nodes in the inner source.
        IOException - if an error occurs while evaluating the condition.