org.apache.lucene.analysis.sinks

Class DateRecognizerSinkTokenizer

java.lang.Object

org.apache.lucene.analysis.TokenStream

org.apache.lucene.analysis.Tokenizer

org.apache.lucene.analysis.SinkTokenizer

org.apache.lucene.analysis.sinks.DateRecognizerSinkTokenizer

public class DateRecognizerSinkTokenizer
extends SinkTokenizer

Attempts to parse the Token.termBuffer() as a Date using a DateFormat. If the value is a Date, it will add it to the sink.

Also marks the sink token with Token.type() equal to DATE_TYPE

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	DATE_TYPE
protected java.text.DateFormat	dateFormat

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

iter, lst

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

input

Constructor Summary

Constructors

Constructor and Description
DateRecognizerSinkTokenizer() Uses DateFormat.getDateInstance() as the DateFormat object.
DateRecognizerSinkTokenizer(java.text.DateFormat dateFormat)
DateRecognizerSinkTokenizer(java.util.List input) Uses DateFormat.getDateInstance() as the DateFormat object.
DateRecognizerSinkTokenizer(java.util.List input, java.text.DateFormat dateFormat)

Method Summary

Methods

Modifier and Type	Method and Description
void	add(Token t) Override this method to cache only certain tokens, or new tokens based on the old tokens.

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

close, getTokens, next, reset

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

reset

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

next

Methods inherited from class java.lang.Object

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

Field Detail

DATE_TYPE

public static final java.lang.String DATE_TYPE

See Also:

Constant Field Values

dateFormat

protected java.text.DateFormat dateFormat

Constructor Detail

DateRecognizerSinkTokenizer

public DateRecognizerSinkTokenizer()

Uses DateFormat.getDateInstance() as the DateFormat object.

DateRecognizerSinkTokenizer

public DateRecognizerSinkTokenizer(java.text.DateFormat dateFormat)

DateRecognizerSinkTokenizer

public DateRecognizerSinkTokenizer(java.util.List input)

Uses DateFormat.getDateInstance() as the DateFormat object.

Parameters:

input - The input list of Tokens that are already Dates. They should be marked as type DATE_TYPE for completeness

DateRecognizerSinkTokenizer

public DateRecognizerSinkTokenizer(java.util.List input,
                           java.text.DateFormat dateFormat)

Parameters:

input -

dateFormat - The date format to use to try and parse the date. Note, this SinkTokenizer makes no attempt to synchronize the DateFormat object

Method Detail

add

public void add(Token t)

Description copied from class: SinkTokenizer

Override this method to cache only certain tokens, or new tokens based on the old tokens.

Overrides:

add in class SinkTokenizer

Parameters:

t - The Token to add to the sink