org.apache.lucene.spatial.prefix

Class AbstractVisitingPrefixTreeFilter

java.lang.Object

org.apache.lucene.search.Filter

org.apache.lucene.spatial.prefix.AbstractPrefixTreeFilter

org.apache.lucene.spatial.prefix.AbstractVisitingPrefixTreeFilter

Direct Known Subclasses:

IntersectsPrefixTreeFilter, WithinPrefixTreeFilter

public abstract class AbstractVisitingPrefixTreeFilter
extends AbstractPrefixTreeFilter

Traverses a SpatialPrefixTree indexed field, using the template and visitor design patterns for subclasses to guide the traversal and collect matching documents.

Subclasses implement Filter.getDocIdSet(org.apache.lucene.index.LeafReaderContext, org.apache.lucene.util.Bits) by instantiating a custom AbstractVisitingPrefixTreeFilter.VisitorTemplate subclass (i.e. an anonymous inner class) and implement the required methods.

NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	AbstractVisitingPrefixTreeFilter.VisitorTemplate An abstract class designed to make it easy to implement predicates or other operations on a SpatialPrefixTree indexed field.
protected static class	AbstractVisitingPrefixTreeFilter.VNode A visitor node/cell found via the query shape for AbstractVisitingPrefixTreeFilter.VisitorTemplate.

Nested classes/interfaces inherited from class org.apache.lucene.spatial.prefix.AbstractPrefixTreeFilter

AbstractPrefixTreeFilter.BaseTermsEnumTraverser

Field Summary

Fields

Modifier and Type	Field and Description
protected int	prefixGridScanLevel

Fields inherited from class org.apache.lucene.spatial.prefix.AbstractPrefixTreeFilter

detailLevel, fieldName, grid, queryShape

Constructor Summary

Constructors

Constructor and Description
AbstractVisitingPrefixTreeFilter(com.spatial4j.core.shape.Shape queryShape, String fieldName, SpatialPrefixTree grid, int detailLevel, int prefixGridScanLevel)

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object o)
int	hashCode()

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

getDocIdSet

Methods inherited from class java.lang.Object

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

Field Detail

prefixGridScanLevel

protected final int prefixGridScanLevel

Constructor Detail

AbstractVisitingPrefixTreeFilter

public AbstractVisitingPrefixTreeFilter(com.spatial4j.core.shape.Shape queryShape,
                                String fieldName,
                                SpatialPrefixTree grid,
                                int detailLevel,
                                int prefixGridScanLevel)

Method Detail

equals

public boolean equals(Object o)

Overrides:

equals in class AbstractPrefixTreeFilter

hashCode

public int hashCode()

Overrides:

hashCode in class AbstractPrefixTreeFilter