org.apache.lucene.search.spans
Class SpanNotQuery

java.lang.Object
  extended byorg.apache.lucene.search.Query
      extended byorg.apache.lucene.search.spans.SpanQuery
          extended byorg.apache.lucene.search.spans.SpanNotQuery
All Implemented Interfaces:
Cloneable, Serializable

public class SpanNotQuery
extends SpanQuery

Removes matches which overlap with another SpanQuery.

See Also:
Serialized Form

Constructor Summary
SpanNotQuery(SpanQuery include, SpanQuery exclude)
          Construct a SpanNotQuery matching spans from include which have no overlap with spans from exclude.
 
Method Summary
 boolean equals(Object o)
          Returns true iff o is equal to this.
 SpanQuery getExclude()
          Return the SpanQuery whose matches must not overlap those returned.
 String getField()
          Returns the name of the field matched by this query.
 SpanQuery getInclude()
          Return the SpanQuery whose matches are filtered.
 Spans getSpans(IndexReader reader)
          Expert: Returns the matches for this query in an index.
 Collection getTerms()
          Returns a collection of all terms matched by this query.
 int hashCode()
           
 Query rewrite(IndexReader reader)
          Expert: called to re-write queries into primitive queries.
 String toString(String field)
          Prints a query to a string, with field as the default field for terms.
 
Methods inherited from class org.apache.lucene.search.spans.SpanQuery
createWeight
 
Methods inherited from class org.apache.lucene.search.Query
clone, combine, extractTerms, getBoost, getSimilarity, mergeBooleanQueries, setBoost, toString, weight
 
Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait
 

Constructor Detail

SpanNotQuery

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

Method Detail

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

getTerms

public Collection getTerms()
Description copied from class: SpanQuery
Returns a collection of all terms matched by this query.

Specified by:
getTerms in class SpanQuery

toString

public String toString(String field)
Description copied from class: Query
Prints a query to a string, with field as the default field for terms.

The representation used is one that is supposed to be readable by QueryParser. However, there are the following limitations:

Specified by:
toString in class Query

getSpans

public Spans getSpans(IndexReader reader)
               throws IOException
Description copied from class: SpanQuery
Expert: Returns the matches for this query in an index. Used internally to search for spans.

Specified by:
getSpans in class SpanQuery
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.

Overrides:
rewrite in class Query
Throws:
IOException

equals

public boolean equals(Object o)
Returns true iff o is equal to this.


hashCode

public int hashCode()


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