org.apache.lucene.spatial.util
Class ShapeFieldCacheProvider<T extends com.spatial4j.core.shape.Shape>

java.lang.Object
  org.apache.lucene.spatial.util.ShapeFieldCacheProvider<T>

Direct Known Subclasses:

PointPrefixTreeFieldCacheProvider

public abstract class ShapeFieldCacheProvider<T extends com.spatial4j.core.shape.Shape>
extends Object

Provides access to a ShapeFieldCache for a given AtomicReader. If a Cache does not exist for the Reader, then it is built by iterating over the all terms for a given field, reconstructing the Shape from them, and adding them to the Cache.

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

Field Summary

protected int	defaultSize
protected String	shapeField

Constructor Summary

ShapeFieldCacheProvider(String shapeField, int defaultSize)

Method Summary

ShapeFieldCache<T>	getCache(AtomicReader reader)
protected abstract T	readShape(BytesRef term)

Methods inherited from class java.lang.Object

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

Field Detail

defaultSize

protected final int defaultSize

shapeField

protected final String shapeField

Constructor Detail

ShapeFieldCacheProvider

public ShapeFieldCacheProvider(String shapeField,
                               int defaultSize)

Method Detail

readShape

protected abstract T readShape(BytesRef term)

getCache

public ShapeFieldCache<T> getCache(AtomicReader reader)
                                                                   throws IOException

Throws:

IOException