org.apache.lucene.search.spans
Class SpanPositionRangeQuery

java.lang.Object
  org.apache.lucene.search.Query
      org.apache.lucene.search.spans.SpanQuery
          org.apache.lucene.search.spans.SpanPositionCheckQuery
              org.apache.lucene.search.spans.SpanPositionRangeQuery

All Implemented Interfaces:

Serializable, Cloneable

Direct Known Subclasses:

SpanFirstQuery

public class SpanPositionRangeQuery
extends SpanPositionCheckQuery

Checks to see if the SpanPositionCheckQuery.getMatch() lies between a start and end position

See Also:

for a derivation that is optimized for the case where start position is 0, Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.search.spans.SpanPositionCheckQuery

SpanPositionCheckQuery.AcceptStatus, SpanPositionCheckQuery.PositionCheckSpan

Field Summary

protected int	end
protected int	start

Fields inherited from class org.apache.lucene.search.spans.SpanPositionCheckQuery

match

Constructor Summary

SpanPositionRangeQuery(SpanQuery match, int start, int end)

Method Summary

protected SpanPositionCheckQuery.AcceptStatus	acceptPosition(Spans spans) Implementing classes are required to return whether the current position is a match for the passed in "match" SpanQuery.
Object	clone() Returns a clone of this query.
boolean	equals(Object o)
int	getEnd()
int	getStart()
int	hashCode()
String	toString(String field) Prints a query to a string, with field assumed to be the default field and omitted.

Methods inherited from class org.apache.lucene.search.spans.SpanPositionCheckQuery

extractTerms, getField, getMatch, getSpans, rewrite

Methods inherited from class org.apache.lucene.search.spans.SpanQuery

createWeight

Methods inherited from class org.apache.lucene.search.Query

combine, getBoost, getSimilarity, mergeBooleanQueries, setBoost, toString, weight

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

start

protected int start

end

protected int end

Constructor Detail

SpanPositionRangeQuery

public SpanPositionRangeQuery(SpanQuery match,
                              int start,
                              int end)

Method Detail

acceptPosition

protected SpanPositionCheckQuery.AcceptStatus acceptPosition(Spans spans)
                                                      throws IOException

Description copied from class: SpanPositionCheckQuery

Implementing classes are required to return whether the current position is a match for the passed in "match" SpanQuery. This is only called if the underlying Spans.next() for the match is successful

Specified by:

acceptPosition in class SpanPositionCheckQuery

Parameters:

spans - The Spans instance, positioned at the spot to check

Returns:

whether the match is accepted, rejected, or rejected and should move to the next doc.

Throws:

IOException

See Also:

Spans.next()

getStart

public int getStart()

Returns:

The minimum position permitted in a match

getEnd

public int getEnd()

Returns:

the maximum end position permitted in a match.

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.

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

• If the query was created by the parser, the printed representation may not be exactly what was parsed. For example, characters that need to be escaped will be represented without the required backslash.
• Some of the more complicated queries (e.g. span queries) don't have a representation that can be parsed by QueryParser.

Specified by:

toString in class Query

clone

public Object clone()

Description copied from class: Query

Returns a clone of this query.

Overrides:

clone in class Query

equals

public boolean equals(Object o)

Overrides:

equals in class Query

hashCode

public int hashCode()

Overrides:

hashCode in class Query