Collaboration diagram for ilQueryParser:

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

Data Fields
	$lng = null
	$min_word_length = 0
	$query_str
	$quoted_words = array()
	$message
	$combination

Protected Attributes
	$settings = null

Detailed Description

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

Member Function Documentation

ilQueryParser::__parseQuotation ( )

Definition at line 189 of file class.ilQueryParser.php.

References $query_str, 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);
                }
                
        }

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ilQueryParser::appendMessage ( $a_msg )

Definition at line 101 of file class.ilQueryParser.php.

References getMessage().

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

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ilQueryParser::getCombination ( )

Definition at line 114 of file class.ilQueryParser.php.

References $combination.

Referenced by getLuceneQueryString().

        {
                return $this->combination;
        }

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ilQueryParser::getLuceneQueryString ( )

Definition at line 144 of file class.ilQueryParser.php.

References 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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ilQueryParser::getMessage ( )

Definition at line 97 of file class.ilQueryParser.php.

References $message.

Referenced by appendMessage(), and validate().

        {
                return $this->message;
        }

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ilQueryParser::getMinWordLength ( )

Definition at line 88 of file class.ilQueryParser.php.

References $min_word_length.

Referenced by parse(), and validate().

        {
                return $this->min_word_length;
        }

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ilQueryParser::getQueryString ( )

Definition at line 119 of file class.ilQueryParser.php.

Referenced by __parseQuotation(), and parse().

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

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ilQueryParser::getQuotedWords ( $with_quotation = false )

Definition at line 128 of file class.ilQueryParser.php.

Referenced by getLuceneQueryString().

        {
                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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ilQueryParser::getWords ( )

Definition at line 123 of file class.ilQueryParser.php.

Referenced by validate().

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

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ilQueryParser::ilQueryParser ( $a_query_str )

Constructor public.

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

References $lng, and setMinWordLength().

        {
                global $lng;
                define(MIN_WORD_LENGTH,3);
                $this->lng =& $lng;
                $this->query_str = $a_query_str;
                $this->message = '';
                include_once './Services/Search/classes/class.ilSearchSettings.php';
                $this->settings = new ilSearchSettings();
                if(!$this->setMinWordLength(1))
                {
                        $this->setMinWordLength(MIN_WORD_LENGTH);
                }
        }

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ilQueryParser::parse ( )

Definition at line 157 of file class.ilQueryParser.php.

References __parseQuotation(), 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())
                        {
                                $this->setMessage($this->lng->txt('search_minimum_three'));
                                continue;
                        }
                        $this->words[] = ilUtil::prepareDBString($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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ilQueryParser::setCombination ( $a_combination )

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

        {
                $this->combination = $a_combination;
        }

ilQueryParser::setMessage ( $a_msg )

Definition at line 93 of file class.ilQueryParser.php.

Referenced by parse(), and validate().

        {
                $this->message = $a_msg;
        }

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

Definition at line 75 of file class.ilQueryParser.php.

References $GLOBALS.

Referenced by ilQueryParser().

        {
                // 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)
                {
                        $GLOBALS['ilLog']->write(__METHOD__.': Disabled min word length');
                        return false;                   
                }
                $this->min_word_length = $a_length;
                return true;
        }

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ilQueryParser::validate ( )

Definition at line 216 of file class.ilQueryParser.php.

References getMessage(), getMinWordLength(), 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;
                }
                return true;
        }