com.arangodb.entity.arangosearch.analyzer

Class NGramAnalyzerProperties

java.lang.Object

com.arangodb.entity.arangosearch.analyzer.NGramAnalyzerProperties

public class NGramAnalyzerProperties
extends Object

An Analyzer capable of producing n-grams from a specified input in a range of min..max (inclusive). Can optionally preserve the original input.

This Analyzer type can be used to implement substring matching. Note that it slices the input based on bytes and not characters by default (streamType). The “binary” mode supports single-byte characters only; multi-byte UTF-8 characters raise an Invalid UTF-8 sequence query error.

Author:

Michele Rastelli

See Also:

API Documentation

Constructor Summary

Constructors

Constructor and Description
NGramAnalyzerProperties()

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
String	getEndMarker()
long	getMax()
long	getMin()
String	getStartMarker()
StreamType	getStreamType()
int	hashCode()
boolean	isPreserveOriginal()
void	setEndMarker(String endMarker)
void	setMax(long max)
void	setMin(long min)
void	setPreserveOriginal(boolean preserveOriginal)
void	setStartMarker(String startMarker)
void	setStreamType(StreamType streamType)

Methods inherited from class java.lang.Object

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

Constructor Detail

NGramAnalyzerProperties

public NGramAnalyzerProperties()

Method Detail

getMin

public long getMin()

Returns:

minimum n-gram length

setMin

public void setMin(long min)

getMax

public long getMax()

Returns:

maximum n-gram length

setMax

public void setMax(long max)

isPreserveOriginal

public boolean isPreserveOriginal()

Returns:

true to include the original value as well false to produce the n-grams based on min and max only

setPreserveOriginal

public void setPreserveOriginal(boolean preserveOriginal)

getStartMarker

public String getStartMarker()

Returns:

this value will be prepended to n-grams which include the beginning of the input. Can be used for matching prefixes. Choose a character or sequence as marker which does not occur in the input

setStartMarker

public void setStartMarker(String startMarker)

getEndMarker

public String getEndMarker()

Returns:

this value will be appended to n-grams which include the end of the input. Can be used for matching suffixes. Choose a character or sequence as marker which does not occur in the input.

setEndMarker

public void setEndMarker(String endMarker)

getStreamType

public StreamType getStreamType()

setStreamType

public void setStreamType(StreamType streamType)

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object