org.apache.lucene.spatial.bbox

Class BBoxSimilarityValueSource

java.lang.Object

org.apache.lucene.queries.function.ValueSource

org.apache.lucene.spatial.bbox.BBoxSimilarityValueSource

Direct Known Subclasses:

BBoxOverlapRatioValueSource

public abstract class BBoxSimilarityValueSource
extends ValueSource

A base class for calculating a spatial relevance rank per document from a provided ValueSource in which FunctionValues.objectVal(int) returns a Rectangle.

Implementers: remember to implement equals and hashCode if you have fields!

Constructor Summary

Constructors

Constructor and Description
BBoxSimilarityValueSource(ValueSource bboxValueSource)

Method Summary

Modifier and Type	Method and Description
void	createWeight(Map context, IndexSearcher searcher) Implementations should propagate createWeight to sub-ValueSources which can optionally store weight info in the context.
String	description() description of field, used in explain()
boolean	equals(Object o)
FunctionValues	getValues(Map context, LeafReaderContext readerContext) Gets the values for this reader and the context that was previously passed to createWeight()
int	hashCode()
protected abstract double	score(com.spatial4j.core.shape.Rectangle rect, AtomicReference<Explanation> exp) Return a relevancy score.
protected abstract String	similarityDescription() A comma-separated list of configurable items of the subclass to put into description().

Methods inherited from class org.apache.lucene.queries.function.ValueSource

getSortField, newContext, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

BBoxSimilarityValueSource

public BBoxSimilarityValueSource(ValueSource bboxValueSource)

Method Detail

createWeight

public void createWeight(Map context,
                         IndexSearcher searcher)
                  throws IOException

Description copied from class: ValueSource

Implementations should propagate createWeight to sub-ValueSources which can optionally store weight info in the context. The context object will be passed to getValues() where this info can be retrieved.

Overrides:

createWeight in class ValueSource

Throws:

IOException

description

public String description()

Description copied from class: ValueSource

description of field, used in explain()

Specified by:

description in class ValueSource

similarityDescription

protected abstract String similarityDescription()

A comma-separated list of configurable items of the subclass to put into description().

getValues

public FunctionValues getValues(Map context,
                                LeafReaderContext readerContext)
                         throws IOException

Description copied from class: ValueSource

Gets the values for this reader and the context that was previously passed to createWeight()

Specified by:

getValues in class ValueSource

Throws:

IOException

score

protected abstract double score(com.spatial4j.core.shape.Rectangle rect,
                                AtomicReference<Explanation> exp)

Return a relevancy score. If exp is provided then diagnostic information is added.

Parameters:

rect - The indexed rectangle; not null.

exp - Optional diagnostic holder.

Returns:

a score.

equals

public boolean equals(Object o)

Specified by:

equals in class ValueSource

hashCode

public int hashCode()

Specified by:

hashCode in class ValueSource