Zend_Search_Luncene handle Querys - zend-framework

Question

iam trying to implement an Searchmachine into my site. Iam using Zend_Search_Lucene for this.
The index is created like this :
public function create($config, $create = true)
{
$this->_config = $config;
// create a new index
if ($create) {
Zend_Search_Lucene_Analysis_Analyzer::setDefault(
new Zend_Search_Lucene_Analysis_Analyzer_Common_TextNum_CaseInsensitive()
);
$this->_index = Zend_Search_Lucene::create(APPLICATION_PATH . $this->_config->index->path);
} else {
$this->_index = Zend_Search_Lucene::open(APPLICATION_PATH . $this->_config->index->path);
}
}
{
public function addToIndex($data)
$i = 0;
foreach ($data as $val) {
$scriptObj = new Sl_Model_Script();
$scriptObj->title = $val['title'];
$scriptObj->description = $val['description'];
$scriptObj->link = $val['link'];
$scriptObj->tutorials = $val['tutorials'];
$scriptObj->screenshot = $val['screenshot'];
$scriptObj->download = $val['download'];
$scriptObj->tags = $val['tags'];
$scriptObj->version = $val['version'];
$this->_dao->add($scriptObj);
$i++;
}
return $i;
}
/**
* Add to Index
*
* #param Sl_Interface_Model $scriptObj
*/
public function add(Sl_Interface_Model $scriptObj)
{
// UTF-8 for INDEX
$doc = new Zend_Search_Lucene_Document();
$doc->addField(Zend_Search_Lucene_Field::text('title', $scriptObj->title, 'utf-8'));
$doc->addField(Zend_Search_Lucene_Field::text('tags', $scriptObj->tags, 'utf-8'));
$doc->addField(Zend_Search_Lucene_Field::text('version', $scriptObj->version, 'utf-8'));
$doc->addField(Zend_Search_Lucene_Field::text('download', $scriptObj->download, 'utf-8'));
$doc->addField(Zend_Search_Lucene_Field::text('link', $scriptObj->link));
$doc->addField(Zend_Search_Lucene_Field::text('description', $scriptObj->description, 'utf-8'));
$doc->addField(Zend_Search_Lucene_Field::text('tutorials', $scriptObj->tutorials, 'utf-8'));
$doc->addField(Zend_Search_Lucene_Field::text('screenshot', $scriptObj->screenshot));
$this->_index->addDocument($doc);
}
But when i try to query the index with :
$index->find('Wordpress 2.8.1' . '*');
im getting the following error :
"non-wildcard characters are required at the beginning of pattern."
any ideas how to query for a string like mine ? an query for "wordpress" works like excepted.

Answer 1

Lucene cannot handle leading wildcards, only trailing ones. That is, it does not support queries like 'tell me everyone whose name ends with 'att'' which would be something like
first_name: *att
It only supports trailing wildcards. Tell me everyone whose names end that start with 'ma'
first_name: ma*
See this Lucene FAQ entry:
http://wiki.apache.org/lucene-java/LuceneFAQ#head-4d62118417eaef0dcb87f4370583f809848ea695
There IS a workaround for Lucene 2.1 but the developers say it can be "expensive".