org.apache.lucene.facet.enhancements

Class EnhancementsPayloadIterator

java.lang.Object

org.apache.lucene.facet.search.PayloadIterator

org.apache.lucene.facet.enhancements.EnhancementsPayloadIterator

public class EnhancementsPayloadIterator
extends PayloadIterator

A PayloadIterator for iterating over category posting lists generated using EnhancementsCategoryTokenizer.

WARNING: This API is experimental and might change in incompatible ways in the next release.

Field Summary

Fields inherited from class org.apache.lucene.facet.search.PayloadIterator

buffer, payloadLength

Constructor Summary

Constructors

Constructor and Description
EnhancementsPayloadIterator(List<CategoryEnhancement> enhancementsList, IndexReader indexReader, Term term) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
Object	getCategoryData(CategoryEnhancement enhancedCategory) Get the data of the current category and document for a certain enhancement, or null if no such enhancement exists.
boolean	setdoc(int docId) Skip forward to document docId.

Methods inherited from class org.apache.lucene.facet.search.PayloadIterator

getBuffer, getPayloadLength, init

Methods inherited from class java.lang.Object

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

Constructor Detail

EnhancementsPayloadIterator

public EnhancementsPayloadIterator(List<CategoryEnhancement> enhancementsList,
                           IndexReader indexReader,
                           Term term)
                            throws IOException

Constructor.

Parameters:

enhancementsList - A list of the CategoryEnhancements from the indexing params.

indexReader - A reader of the index.

term - The category term to iterate.

Throws:

IOException - If there is a low-level I/O error.

Method Detail

setdoc

public boolean setdoc(int docId)
               throws IOException

Description copied from class: PayloadIterator

Skip forward to document docId. Return true if this document exists and has any payload.

Users should call this method with increasing docIds, and implementations can assume that this is the case.

Overrides:

setdoc in class PayloadIterator

Throws:

IOException

getCategoryData

public Object getCategoryData(CategoryEnhancement enhancedCategory)

Get the data of the current category and document for a certain enhancement, or null if no such enhancement exists.

Parameters:

enhancedCategory - The category enhancement to apply.

Returns:

the data of the current category and document for a certain enhancement, or null if no such enhancement exists.