/**
* Parses a query string
*
* @param string $strQuery
* @param string $encoding
* @throws \ZendSearch\Lucene\Search\Exception\QueryParserException
* @throws \ZendSearch\Lucene\Exception\RuntimeException
* @return \ZendSearch\Lucene\Search\Query\AbstractQuery
*/
public static function parse($strQuery, $encoding = null)
{
self::_getInstance();
// Reset FSM if previous parse operation didn't return it into a correct state
self::$_instance->reset();
try {
self::$_instance->_encoding = $encoding !== null ? $encoding : self::$_instance->_defaultEncoding;
self::$_instance->_lastToken = null;
self::$_instance->_context = new QueryParserContext(self::$_instance->_encoding);
self::$_instance->_contextStack = array();
self::$_instance->_tokens = self::$_instance->_lexer->tokenize($strQuery, self::$_instance->_encoding);
// Empty query
if (count(self::$_instance->_tokens) == 0) {
return new Query\Insignificant();
}
foreach (self::$_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 QueryParserException('Syntax error at char position ' . $token->position . '.', 0, $e);
}
throw new RuntimeException($e->getMessage(), $e->getCode(), $e);
}
}
if (count(self::$_instance->_contextStack) != 0) {
throw new QueryParserException('Syntax Error: mismatched parentheses, every opening must have closing.');
}
return self::$_instance->_context->getQuery();
} catch (QueryParserException $e) {
if (self::$_instance->_suppressQueryParsingExceptions) {
$queryTokens = Analyzer\Analyzer::getDefault()->tokenize($strQuery, self::$_instance->_encoding);
$query = new Query\MultiTerm();
$termsSign = self::$_instance->_defaultOperator == self::B_AND ? true : null;
foreach ($queryTokens as $token) {
$query->addTerm(new Index\Term($token->getTermText()), $termsSign);
}
return $query;
} else {
throw new RuntimeException($e->getMessage(), $e->getCode(), $e);
}
}
}
