org.apache.lucene.facet.index.streaming

Class CategoryTokenizerBase

java.lang.Object

org.apache.lucene.util.AttributeSource

org.apache.lucene.analysis.TokenStream

org.apache.lucene.analysis.TokenFilter

org.apache.lucene.facet.index.streaming.CategoryTokenizerBase

All Implemented Interfaces:

Closeable

Direct Known Subclasses:

CategoryListTokenizer, CategoryTokenizer

public abstract class CategoryTokenizerBase
extends TokenFilter

A base class for all token filters which add term and payload attributes to tokens and are to be used in CategoryDocumentBuilder. Contains three attributes: CategoryAttribute, CharTermAttribute and PayloadAttribute.

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

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.util.AttributeSource

AttributeSource.AttributeFactory, AttributeSource.State

Field Summary

Fields

Modifier and Type	Field and Description
protected CategoryAttribute	categoryAttribute The stream's category attributes.
protected FacetIndexingParams	indexingParams Indexing params for creating term text
protected BytesRef	payload The object used for constructing payloads.
protected PayloadAttribute	payloadAttribute The stream's payload attribute.
protected CharTermAttribute	termAttribute The stream's term attribute.

Fields inherited from class org.apache.lucene.analysis.TokenFilter

input

Constructor Summary

Constructors

Constructor and Description
CategoryTokenizerBase(TokenStream input, FacetIndexingParams indexingParams) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
abstract boolean	incrementToken()

Methods inherited from class org.apache.lucene.analysis.TokenFilter

close, end, reset

Methods inherited from class org.apache.lucene.util.AttributeSource

addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, copyTo, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, reflectAsString, reflectWith, restoreState

Methods inherited from class java.lang.Object

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

Field Detail

categoryAttribute

protected CategoryAttribute categoryAttribute

The stream's category attributes.

payloadAttribute

protected PayloadAttribute payloadAttribute

The stream's payload attribute.

termAttribute

protected CharTermAttribute termAttribute

The stream's term attribute.

payload

protected BytesRef payload

The object used for constructing payloads.

indexingParams

protected FacetIndexingParams indexingParams

Indexing params for creating term text

Constructor Detail

CategoryTokenizerBase

public CategoryTokenizerBase(TokenStream input,
                     FacetIndexingParams indexingParams)

Constructor.

Parameters:

input - The input stream, either CategoryParentsStream or an extension of CategoryTokenizerBase.

indexingParams - The indexing params to use.

Method Detail

incrementToken

public abstract boolean incrementToken()
                                throws IOException

Specified by:

incrementToken in class TokenStream

Throws:

IOException