Search/Lucene/Search/QueryLexer.php

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Zend Framework

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Category: Zend
Copyright: Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
License: New BSD License
Package: Zend_Search_Lucene
Subpackage: Search
Version: $Id$

\Zend_Search_Lucene_Search_QueryLexer
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Package: Zend_Search_Lucene\Search

Abstract Finite State Machine

Take a look on Wikipedia state machine description: http://en.wikipedia.org/wiki/Finite_state_machine Any type of Transducers (Moore machine or Mealy machine) also may be implemented by using this abstract FSM. process() methods invokes a specified actions which may construct FSM output. Actions may be also used to signal, that we have reached Accept State

Parent(s): \Zend_Search_Lucene_FSM
Category: Zend
Copyright: Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
License: New BSD License

Constants

 
                ST_WHITE_SPACE
                = 0

State Machine states

 
                ST_SYNT_LEXEME
                = 1

 
                ST_LEXEME
                = 2

 
                ST_QUOTED_LEXEME
                = 3

 
                ST_ESCAPED_CHAR
                = 4

 
                ST_ESCAPED_QCHAR
                = 5

 
                ST_LEXEME_MODIFIER
                = 6

 
                ST_NUMBER
                = 7

 
                ST_MANTISSA
                = 8

 
                ST_ERROR
                = 9

 
                IN_WHITE_SPACE
                = 0

Input symbols

 
                IN_SYNT_CHAR
                = 1

 
                IN_LEXEME_MODIFIER
                = 2

 
                IN_ESCAPE_CHAR
                = 3

 
                IN_QUOTE
                = 4

 
                IN_DECIMAL_POINT
                = 5

 
                IN_ASCII_DIGIT
                = 6

 
                IN_CHAR
                = 7

 
                IN_MUTABLE_CHAR
                = 8

 
                QUERY_WHITE_SPACE_CHARS
                = " \n\r\t"

 
                QUERY_SYNT_CHARS
                = ':()[]{}!|&'

 
                QUERY_MUTABLE_CHARS
                = '+-'

 
                QUERY_DOUBLECHARLEXEME_CHARS
                = '|&'

 
                QUERY_LEXEMEMODIFIER_CHARS
                = '~^'

 
                QUERY_ASCIIDIGITS_CHARS
                = '0123456789'

Properties

string $_currentLexeme

Recognized part of current lexeme

Details

Type: string

array $_lexemes

List of recognized lexemes

Details

Type: array

array $_queryString

Query string (array of single- or non single-byte characters)

Details

Type: array

integer $_queryStringPosition

Current position within a query string Used to create appropriate error messages

Details

Type: integer

Methods

__construct() : void

_positionMsg() : string

Position message

Returns

Type	Description
string

_translateInput(string $char) : integer

Translate input char to an input symbol of state machine

Parameters

Name	Type	Description
$char	string

Returns

Type	Description
integer

addLexeme() : void

Add lexeme

addLexemeChar() : void

Extend lexeme by one char

addLexemeModifier() : void

Add lexeme modifier

addNumberLexeme() : void

Add number lexeme

addQuerySyntaxLexeme() : void

Add query syntax lexeme

Throws

Exception	Description
\Zend_Search_Lucene_Search_QueryParserException

addQuotedLexeme() : void

Add quoted lexeme

lexModifierErrException() : void

quoteWithinLexemeErrException() : void

tokenize(string $inputString, string $encoding) : array

This method is used to tokenize query string into lexemes

Parameters

Name	Type	Description
$inputString	string
$encoding	string

Returns

Type	Description
array

Throws

Exception	Description
\Zend_Search_Lucene_Search_QueryParserException

wrongNumberErrException() : void

Search/Lucene/Search/QueryLexer.php

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Constants

Properties

Methods

\Zend_Search_Lucene_Search_QueryLexer
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