ilQueryParser Class Reference

Collaboration diagram for ilQueryParser:

Public Member Functions
	__construct ($a_query_str)
	Constructor public. More...
	setMinWordLength ($a_length, $a_force=false)
	getMinWordLength ()
	setGlobalMinLength ($a_value)
	getGlobalMinLength ()
	setAllowedWildcards ($a_value)
	getAllowedWildcards ()
	setMessage ($a_msg)
	getMessage ()
	appendMessage ($a_msg)
	setCombination ($a_combination)
	getCombination ()
	getQueryString ()
	getWords ()
	getQuotedWords ($with_quotation=false)
	getLuceneQueryString ()
	parse ()
	__parseQuotation ()
	validate ()

Data Fields
const	MIN_WORD_LENGTH = 3
	Minimum of characters required for search. More...
	$lng = null
	$min_word_length = 0
	$global_min_length = null
	$query_str
	$quoted_words = array()
	$message
	$combination

Protected Attributes
	$settings = null
	$wildcards_allowed

Detailed Description

Definition at line 38 of file class.ilQueryParser.php.

Constructor & Destructor Documentation

__construct()

ilQueryParser::__construct

(

$a_query_str

)

Constructor public.

Definition at line 61 of file class.ilQueryParser.php.

References $lng, ilSearchSettings\getInstance(), MIN_WORD_LENGTH, setAllowedWildcards(), setMinWordLength(), and settings().

    {
        global $lng;

        define('MIN_WORD_LENGTH', self::MIN_WORD_LENGTH);

        $this->lng = $lng;

        $this->query_str = $a_query_str;
        $this->message = '';

        include_once './Services/Search/classes/class.ilSearchSettings.php';
        $this->settings = ilSearchSettings::getInstance();

        if (!$this->setMinWordLength(1)) {
            $this->setMinWordLength(MIN_WORD_LENGTH);
        }
        
        $this->setAllowedWildcards(false);
    }

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Member Function Documentation

__parseQuotation()

ilQueryParser::__parseQuotation

(

)

Definition at line 229 of file class.ilQueryParser.php.

References $query_str, getAllowedWildcards(), getQueryString(), and ilUtil\prepareDBString().

Referenced by parse().

    {
        if (!strlen($this->getQueryString())) {
            $this->quoted_words[] = '';
            return false;
        }
        $query_str = $this->getQueryString();
        while (preg_match("/\".*?\"/", $query_str, $matches)) {
            $query_str = str_replace($matches[0], '', $query_str);
            $this->quoted_words[] = ilUtil::prepareDBString($matches[0]);
        }

        // Parse the rest
        $words = explode(' ', trim($query_str));
        foreach ($words as $word) {
            if (!strlen(trim($word))) {
                continue;
            }
            
            $this->quoted_words[] = ilUtil::prepareDBString($word);
        }
                        
        if (!$this->getAllowedWildcards()) {
            // #14768
            foreach ($this->quoted_words as $idx => $word) {
                if (!stristr($word, '\\')) {
                    $word = str_replace('%', '\%', $word);
                    $word = str_replace('_', '\_', $word);
                }
                $this->quoted_words[$idx] = $word;
            }
        }
    }

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appendMessage()

ilQueryParser::appendMessage

(

$a_msg

)

Definition at line 133 of file class.ilQueryParser.php.

References getMessage().

    {
        if (strlen($this->getMessage())) {
            $this->message .= '<br />';
        }
        $this->message .= $a_msg;
    }

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getAllowedWildcards()

ilQueryParser::getAllowedWildcards

(

)

Definition at line 120 of file class.ilQueryParser.php.

References $wildcards_allowed.

Referenced by __parseQuotation(), and parse().

    {
        return $this->wildcards_allowed;
    }

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getCombination()

ilQueryParser::getCombination

(

)

Definition at line 145 of file class.ilQueryParser.php.

References $combination.

Referenced by getLuceneQueryString().

    {
        return $this->combination;
    }

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getGlobalMinLength()

ilQueryParser::getGlobalMinLength

(

)

Definition at line 110 of file class.ilQueryParser.php.

References $global_min_length.

Referenced by validate().

    {
        return $this->global_min_length;
    }

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getLuceneQueryString()

ilQueryParser::getLuceneQueryString

(

)

Definition at line 171 of file class.ilQueryParser.php.

References $counter, getCombination(), and getQuotedWords().

    {
        $counter = 0;
        $tmp_str = "";
        foreach ($this->getQuotedWords(true) as $word) {
            if ($counter++) {
                $tmp_str .= (" " . strtoupper($this->getCombination()) . " ");
            }
            $tmp_str .= $word;
        }
        return $tmp_str;
    }

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getMessage()

ilQueryParser::getMessage

(

)

Definition at line 129 of file class.ilQueryParser.php.

References $message.

Referenced by appendMessage(), and validate().

    {
        return $this->message;
    }

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getMinWordLength()

ilQueryParser::getMinWordLength

(

)

Definition at line 94 of file class.ilQueryParser.php.

References $min_word_length.

Referenced by parse(), and validate().

    {
        return $this->min_word_length;
    }

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getQueryString()

ilQueryParser::getQueryString

(

)

Definition at line 150 of file class.ilQueryParser.php.

Referenced by __parseQuotation(), parse(), and validate().

    {
        return trim($this->query_str);
    }

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getQuotedWords()

ilQueryParser::getQuotedWords

(

$with_quotation = false

)

Definition at line 159 of file class.ilQueryParser.php.

References array.

Referenced by getLuceneQueryString(), and ilAdvancedMDFieldDefinitionText\searchObjects().

    {
        if ($with_quotation) {
            return $this->quoted_words ? $this->quoted_words : array();
        } else {
            foreach ($this->quoted_words as $word) {
                $tmp_word[] = str_replace('\"', '', $word);
            }
            return $tmp_word ? $tmp_word : array();
        }
    }

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getWords()

ilQueryParser::getWords

(

)

Definition at line 154 of file class.ilQueryParser.php.

References array.

Referenced by validate().

    {
        return $this->words ? $this->words : array();
    }

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parse()

ilQueryParser::parse

(

)

Definition at line 183 of file class.ilQueryParser.php.

References __parseQuotation(), array, getAllowedWildcards(), getMinWordLength(), getQueryString(), ilUtil\prepareDBString(), and setMessage().

    {
        $this->words = array();

        #if(!strlen($this->getQueryString()))
        #{
        #       return false;
        #}

        $words = explode(' ', trim($this->getQueryString()));
        foreach ($words as $word) {
            if (!strlen(trim($word))) {
                continue;
            }
            
            if (strlen(trim($word)) < $this->getMinWordLength()) {
                $this->setMessage(sprintf($this->lng->txt('search_minimum_info'), $this->getMinWordLength()));
                continue;
            }
            
            $this->words[] = ilUtil::prepareDBString($word);
        }
        
        $fullstr = trim($this->getQueryString());
        if (!in_array($fullstr, $this->words)) {
            $this->words[] = ilUtil::prepareDBString($fullstr);
        }
                
        if (!$this->getAllowedWildcards()) {
            // #14768
            foreach ($this->words as $idx => $word) {
                if (!stristr($word, '\\')) {
                    $word = str_replace('%', '\%', $word);
                    $word = str_replace('_', '\_', $word);
                }
                $this->words[$idx] = $word;
            }
        }

        // Parse strings like && 'A "B C D" E' as 'A' && 'B C D' && 'E'
        // Can be used in LIKE search or fulltext search > MYSQL 4.0
        $this->__parseQuotation();
        
        return true;
    }

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setAllowedWildcards()

ilQueryParser::setAllowedWildcards

(

$a_value

)

Definition at line 115 of file class.ilQueryParser.php.

Referenced by __construct().

    {
        $this->wildcards_allowed = (bool) $a_value;
    }

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setCombination()

ilQueryParser::setCombination

(

$a_combination

)

Definition at line 141 of file class.ilQueryParser.php.

    {
        $this->combination = $a_combination;
    }

setGlobalMinLength()

ilQueryParser::setGlobalMinLength

(

$a_value

)

Definition at line 99 of file class.ilQueryParser.php.

    {
        if ($a_value !== null) {
            $a_value = (int) $a_value;
            if ($a_value < 1) {
                return;
            }
        }
        $this->global_min_length = $a_value;
    }

setMessage()

ilQueryParser::setMessage

(

$a_msg

)

Definition at line 125 of file class.ilQueryParser.php.

Referenced by parse(), and validate().

    {
        $this->message = $a_msg;
    }

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setMinWordLength()

ilQueryParser::setMinWordLength	(		$a_length,
			$a_force = false
	)

Definition at line 82 of file class.ilQueryParser.php.

References ilLoggerFactory\getLogger(), and settings().

Referenced by __construct(), and ilObjectCopyGUI\searchSource().

    {
        // Due to a bug in mysql fulltext search queries with min_word_legth < 3
        // might freeze the system.
        // Thus min_word_length cannot be set to values < 3 if the mysql fulltext is used.
        if (!$a_force and $this->settings->enabledIndex() and $a_length < 3) {
            ilLoggerFactory::getLogger('src')->debug('Disabled min word length');
            return false;
        }
        $this->min_word_length = $a_length;
        return true;
    }

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validate()

ilQueryParser::validate

(

)

Definition at line 263 of file class.ilQueryParser.php.

References getGlobalMinLength(), getMessage(), getMinWordLength(), getQueryString(), getWords(), and setMessage().

    {
        // Words with less than 3 characters
        if (strlen($this->getMessage())) {
            return false;
        }
        // No search string given
        if ($this->getMinWordLength() and !count($this->getWords())) {
            $this->setMessage($this->lng->txt('msg_no_search_string'));
            return false;
        }
        // No search string given
        if ($this->getGlobalMinLength() and strlen(str_replace('"', '', $this->getQueryString())) < $this->getGlobalMinLength()) {
            $this->setMessage(sprintf($this->lng->txt('search_minimum_info'), $this->getGlobalMinLength()));
            return false;
        }

        return true;
    }

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Field Documentation

$combination

ilQueryParser::$combination

Definition at line 53 of file class.ilQueryParser.php.

Referenced by getCombination().

$global_min_length

ilQueryParser::$global_min_length = null

Definition at line 48 of file class.ilQueryParser.php.

Referenced by getGlobalMinLength().

$lng

ilQueryParser::$lng = null

Definition at line 45 of file class.ilQueryParser.php.

Referenced by __construct().

$message

ilQueryParser::$message

Definition at line 52 of file class.ilQueryParser.php.

Referenced by getMessage().

$min_word_length

ilQueryParser::$min_word_length = 0

Definition at line 47 of file class.ilQueryParser.php.

Referenced by getMinWordLength().

$query_str

ilQueryParser::$query_str

Definition at line 50 of file class.ilQueryParser.php.

Referenced by __parseQuotation().

$quoted_words

ilQueryParser::$quoted_words = array()

Definition at line 51 of file class.ilQueryParser.php.

$settings

ilQueryParser::$settings = null

protected

Definition at line 54 of file class.ilQueryParser.php.

$wildcards_allowed

ilQueryParser::$wildcards_allowed

protected

Definition at line 55 of file class.ilQueryParser.php.

Referenced by getAllowedWildcards().

MIN_WORD_LENGTH

const ilQueryParser::MIN_WORD_LENGTH = 3

Minimum of characters required for search.

Definition at line 43 of file class.ilQueryParser.php.

Referenced by __construct(), and ilUserAutoComplete\setResultField().

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The documentation for this class was generated from the following file:

• Services/Search/classes/class.ilQueryParser.php