DefaultWordSifter

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net.axyana.qizxopen.util
Class DefaultWordSifter

java.lang.Object
  net.axyana.qizxopen.util.DefaultWordSifter

All Implemented Interfaces:: java.io.Serializable, WordSifter

Direct Known Subclasses:: DefaultWordSifterU

public class DefaultWordSifter
extends java.lang.Object
implements WordSifter, java.io.Serializable

A default word extractor suitable for European languages compatible with ISO-8859-1.

By default, words start on a letter, accept letters/digits inside. Optionally (and by default), characters are folded to lowercase and accented letters are converted to the corresponding non-accented letters.

See Also:: Serialized Form

Constructor Summary
`DefaultWordSifter()` Builds a case-insensitive and accents-insensitive sifter.
`DefaultWordSifter(boolean caseSensitive, boolean accentSensitive)` Builds a sifter specifying case and accent sensitiveness.

Method Summary
`char`	`charAt(int ahead)` Returns the character at current position + ahead, or 0 if after end.
`boolean`	`isWordPart(char c)` Returns true if the char can be part of a word.
`boolean`	`isWordStart(char c)` Returns true if the char can be at start of a word.
`char`	`mapChar(char c)` Normalizes a character (belonging to a word)
`char`	`nextChar()` Moves to next character and return it, returns 0 if at end.
`char[]`	`nextWord()` Gets the next normalized word, or null if no more words.
`void`	`start(char[] text, int length)` Starts the analysis of a new text chunk.
`char`	`wildcardSeveral()` Returns the wildcard character which matches several characters.
`char`	`wildcardSingle()` Returns the wildcard character which matches a single character.
`int`	`wordLength()` Returns the original length of the last word returned by nextWord.
`int`	`wordOffset()` Returns the offset of the last word returned by nextWord.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultWordSifter

public DefaultWordSifter()

Builds a case-insensitive and accents-insensitive sifter.

DefaultWordSifter

public DefaultWordSifter(boolean caseSensitive,
                         boolean accentSensitive)

Builds a sifter specifying case and accent sensitiveness.
Parameters:: caseSensitive - if false, uppercase and lowercase characters are equivalent.; accentSensitive - if false, a letter with diacritic signs is equivalent to the same letter without diacritic sign, for example '?' is equivalent to 'e'.

Method Detail