/**
* Parses a query string
*
* @param string $strQuery
* @param string $encoding
* @return Zend_Search_Lucene_Search_Query
* @throws Zend_Search_Lucene_Search_QueryParserException
*/
public static function parse($strQuery, $encoding = null)
{
self::_getInstance();
// Reset FSM if previous parse operation didn't return it into a correct state
self::$_instance->reset();
require_once 'Zend/Search/Lucene/Search/QueryParserException.php';
try {
self::$_instance->_encoding = ($encoding !== null) ? $encoding : self::$_instance->_defaultEncoding;
self::$_instance->_lastToken = null;
self::$_instance->_context = new Zend_Search_Lucene_Search_QueryParserContext(self::$_instance->_encoding);
self::$_instance->_contextStack = array();
self::$_instance->_tokens = self::$_instance->_lexer->tokenize($strQuery, self::$_instance->_encoding);
// Empty query
if (count(self::$_instance->_tokens) == 0) {
return new Zend_Search_Lucene_Search_Query_Insignificant();
}
foreach (self::$_instance->_tokens as $token) {
try {
self::$_instance->_currentToken = $token;
self::$_instance->process($token->type);
self::$_instance->_lastToken = $token;
} catch (Exception $e) {
if (strpos($e->getMessage(), 'There is no any rule for') !== false) {
throw new Zend_Search_Lucene_Search_QueryParserException( 'Syntax error at char position ' . $token->position . '.' );
}
throw $e;
}
}
if (count(self::$_instance->_contextStack) != 0) {
throw new Zend_Search_Lucene_Search_QueryParserException('Syntax Error: mismatched parentheses, every opening must have closing.' );
}
return self::$_instance->_context->getQuery();
} catch (Zend_Search_Lucene_Search_QueryParserException $e) {
if (self::$_instance->_suppressQueryParsingExceptions) {
$queryTokens = Zend_Search_Lucene_Analysis_Analyzer::getDefault()->tokenize($strQuery, self::$_instance->_encoding);
$query = new Zend_Search_Lucene_Search_Query_MultiTerm();
$termsSign = (self::$_instance->_defaultOperator == self::B_AND) ? true /* required term */ :
null /* optional term */;
foreach ($queryTokens as $token) {
$query->addTerm(new Zend_Search_Lucene_Index_Term($token->getTermText()), $termsSign);
}
return $query;
} else {
throw $e;
}
}
}
