Method intersectionSize

solr/core/src/java/org/apache/solr/search/DocSet.java:86–86

Returns the number of documents of the intersection of this set with another set. May be more efficient than actually creating the intersection and then getting its size.

(DocSet other)

   * efficient than actually creating the intersection and then getting its size.
   */
  public abstract int intersectionSize(DocSet other);

  /** Returns true if these sets have any elements in common */
  public abstract boolean intersects(DocSet other);