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(IndexSearcher indexSearcher) 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.

      The rewrite process may be able to make use of IndexSearcher's executor and be executed in parallel if the executor is provided.

      However, if any of the intermediary queries do not satisfy the new API, parallel rewrite is not possible for any subsequent sub-queries. To take advantage of this API, the entire query tree must override this method.

      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: