org.apache.lucene.analysis.boost

Class DelimitedBoostTokenFilter

java.lang.Object

org.apache.lucene.util.AttributeSource

org.apache.lucene.analysis.TokenStream

org.apache.lucene.analysis.TokenFilter

org.apache.lucene.analysis.boost.DelimitedBoostTokenFilter

All Implemented Interfaces:

Closeable, AutoCloseable

public final class DelimitedBoostTokenFilter
extends TokenFilter

Characters before the delimiter are the "token", those after are the boost.

For example, if the delimiter is '|', then for the string "foo|0.7", foo is the token and 0.7 is the boost.

Note make sure your Tokenizer doesn't split on the delimiter, or this won't work

Nested Class Summary

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

AttributeSource.State

Field Summary

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

input

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

DEFAULT_TOKEN_ATTRIBUTE_FACTORY

Constructor Summary

Constructors

Constructor and Description
DelimitedBoostTokenFilter(TokenStream input, char delimiter)

Method Summary

Modifier and Type	Method and Description
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, endAttributes, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, reflectAsString, reflectWith, removeAllAttributes, restoreState, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

DelimitedBoostTokenFilter

public DelimitedBoostTokenFilter(TokenStream input,
                                 char delimiter)

Method Detail

incrementToken

public boolean incrementToken()
                       throws IOException

Specified by:

incrementToken in class TokenStream

Throws:

IOException