Class SpanNotQuery


public final class SpanNotQuery extends SpanQuery
Removes matches which overlap with another SpanQuery or which are within x tokens before or y tokens after another SpanQuery.
  • Field Details

    • include

      private SpanQuery include
    • exclude

      private SpanQuery exclude
    • pre

      private final int pre
    • post

      private final int post
  • Constructor Details

    • SpanNotQuery

      public SpanNotQuery(SpanQuery include, SpanQuery exclude)
      Construct a SpanNotQuery matching spans from include which have no overlap with spans from exclude.
    • SpanNotQuery

      public SpanNotQuery(SpanQuery include, SpanQuery exclude, int dist)
      Construct a SpanNotQuery matching spans from include which have no overlap with spans from exclude within dist tokens of include. Inversely, a negative dist value may be used to specify a certain amount of allowable overlap.
    • SpanNotQuery

      public SpanNotQuery(SpanQuery include, SpanQuery exclude, int pre, int post)
      Construct a SpanNotQuery matching spans from include which have no overlap with spans from exclude within pre tokens before or post tokens of include. Inversely, negative values for pre and/or post allow a certain amount of overlap to occur.
  • Method Details

    • getInclude

      public SpanQuery getInclude()
      Return the SpanQuery whose matches are filtered.
    • getExclude

      public SpanQuery getExclude()
      Return the SpanQuery whose matches must not overlap those returned.
    • getField

      public String getField()
      Description copied from class: SpanQuery
      Returns the name of the field matched by this query.
      Specified by:
      getField in class SpanQuery
    • toString

      public String toString(String field)
      Description copied from class: Query
      Prints a query to a string, with field assumed to be the default field and omitted.
      Specified by:
      toString in class Query
    • createWeight

      public SpanWeight createWeight(IndexSearcher searcher, ScoreMode scoreMode, float boost) throws IOException
      Description copied from class: Query
      Expert: Constructs an appropriate Weight implementation for this query.

      Only implemented by primitive queries, which re-write to themselves.

      Specified by:
      createWeight in class SpanQuery
      scoreMode - How the produced scorers will be consumed.
      boost - The boost that is propagated by the parent queries.
      Throws:
      IOException
    • rewrite

      public Query rewrite(IndexReader reader) throws IOException
      Description copied from class: Query
      Expert: called to re-write queries into primitive queries. For example, a PrefixQuery will be rewritten into a BooleanQuery that consists of TermQuerys.

      Callers are expected to call rewrite multiple times if necessary, until the rewritten query is the same as the original query.

      Overrides:
      rewrite in class Query
      Throws:
      IOException
      See Also:
    • visit

      public void visit(QueryVisitor visitor)
      Description copied from class: Query
      Recurse through the query tree, visiting any child queries
      Specified by:
      visit in class Query
      Parameters:
      visitor - a QueryVisitor to be called by each query in the tree
    • equals

      public boolean equals(Object other)
      Returns true iff o is equal to this.
      Specified by:
      equals in class Query
      See Also:
    • equalsTo

      private boolean equalsTo(SpanNotQuery other)
    • hashCode

      public int hashCode()
      Description copied from class: Query
      Override and implement query hash code properly in a subclass. This is required so that QueryCache works properly.
      Specified by:
      hashCode in class Query
      See Also: