org.hibernate.search.test.util.textbuilder
Class SentenceInventor

java.lang.Object
  org.hibernate.search.test.util.textbuilder.SentenceInventor

public class SentenceInventor
extends java.lang.Object

Test utility meant to produce sentences of a randomly generated language, having some properties of natural languages. The goal is to produce sentences which look like a western text, but are not. All sentences from the same SentenceInventor will share a limited dictionary, making the frequencies suitable to test with Lucene. Sentences produced depend from the constructor arguments, making the output predictable for testing purposes.

Author:

Sanne Grinovero

Constructor Summary

SentenceInventor(long randomSeed, int dictionarySize)

Method Summary

static void	main(java.lang.String[] args)
java.lang.String	nextPeriod() Combines a random (gaussian) number of sentences in a period, using some punctuation symbols and capitalizing first char, terminating with dot and newline.
java.lang.String	nextSentence() Builds a sentence concatenating terms from the generated dictionary and spaces
char	randomCharacter()
java.lang.String	randomString() Produces a randomly generated String, using only western alphabet characters and selecting the length as a normal distribution of natural languages.
java.lang.String	randomString(int length)
java.lang.String	randomTerm() Produces a random String, which might be lowercase, completely uppercase, or uppercasing the first char (randomly selected)

Methods inherited from class java.lang.Object

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

Constructor Detail

SentenceInventor

public SentenceInventor(long randomSeed,
                        int dictionarySize)

Parameters:

randomSeed - the seed to use for random generator

dictionarySize - the number of terms to insert in the dictionary used to build sentences

Method Detail

randomCharacter

public char randomCharacter()

Returns:

a random character from the ASCII table (text chars only)

randomString

public java.lang.String randomString(int length)

Parameters:

length - the desired length

Returns:

a randomly generated String

randomString

public java.lang.String randomString()

Produces a randomly generated String, using only western alphabet characters and selecting the length as a normal distribution of natural languages.

Returns:

the generated String

randomTerm

public java.lang.String randomTerm()

Produces a random String, which might be lowercase, completely uppercase, or uppercasing the first char (randomly selected)

Returns:

produced String

nextSentence

public java.lang.String nextSentence()

Builds a sentence concatenating terms from the generated dictionary and spaces

Returns:

a sentence

nextPeriod

public java.lang.String nextPeriod()

Combines a random (gaussian) number of sentences in a period, using some punctuation symbols and capitalizing first char, terminating with dot and newline.

Returns:

main

public static void main(java.lang.String[] args)