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:

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 SpanFirstQuery for a derivation that is optimized for the case where start position is 0.

Nested Class Summary

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

SpanPositionCheckQuery.SpanPositionCheckWeight

Field Summary

Fields

Modifier and Type	Field and Description
protected int	end
protected int	start

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

match

Constructor Summary

Constructors

Constructor and Description
SpanPositionRangeQuery(SpanQuery match, int start, int end)

Method Summary

Modifier and Type	Method and Description
protected FilterSpans.AcceptStatus	acceptPosition(Spans spans) Implementing classes are required to return whether the current position is a match for the passed in "match" SpanQuery.
boolean	equals(Object o) Returns true iff other is equal to this.
int	getEnd()
int	getStart()
int	hashCode() Override and implement query hash code properly in a subclass.
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

createWeight, getField, getMatch, rewrite, visit

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

getTermStates, getTermStates

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

classHash, sameClassAs, toString

Methods inherited from class java.lang.Object

clone, 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 FilterSpans.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 last Spans.nextStartPosition() for the match indicated a valid start position.

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:

DocIdSetIterator.nextDoc()

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.

Specified by:

toString in class Query

equals

public boolean equals(Object o)

Description copied from class: SpanPositionCheckQuery

Returns true iff other is equal to this.

Overrides:

equals in class SpanPositionCheckQuery

See Also:

Query.sameClassAs(Object), Query.classHash()

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.

Overrides:

hashCode in class SpanPositionCheckQuery

See Also:

Query.equals(Object)