/**
* Create dicrionary, frequency and positions files and write necessary headers
*/
public function initializeDictionaryFiles()
{
$this->_tisFile = $this->_directory->createFile($this->_name . '.tis');
$this->_tisFile->writeInt((int) 0xfffffffd);
$this->_tisFile->writeLong(0);
$this->_tisFile->writeInt(self::$indexInterval);
$this->_tisFile->writeInt(self::$skipInterval);
$this->_tisFile->writeInt(self::$maxSkipLevels);
$this->_tiiFile = $this->_directory->createFile($this->_name . '.tii');
$this->_tiiFile->writeInt((int) 0xfffffffd);
$this->_tiiFile->writeLong(0);
$this->_tiiFile->writeInt(self::$indexInterval);
$this->_tiiFile->writeInt(self::$skipInterval);
$this->_tiiFile->writeInt(self::$maxSkipLevels);
/** Dump dictionary header */
$this->_tiiFile->writeVInt(0);
// preffix length
$this->_tiiFile->writeString('');
// suffix
$this->_tiiFile->writeInt((int) 0xffffffff);
// field number
$this->_tiiFile->writeByte((int) 0xf);
$this->_tiiFile->writeVInt(0);
// DocFreq
$this->_tiiFile->writeVInt(0);
// FreqDelta
$this->_tiiFile->writeVInt(0);
// ProxDelta
$this->_tiiFile->writeVInt(24);
// IndexDelta
$this->_frqFile = $this->_directory->createFile($this->_name . '.frq');
$this->_prxFile = $this->_directory->createFile($this->_name . '.prx');
$this->_files[] = $this->_name . '.tis';
$this->_files[] = $this->_name . '.tii';
$this->_files[] = $this->_name . '.frq';
$this->_files[] = $this->_name . '.prx';
$this->_prevTerm = null;
$this->_prevTermInfo = null;
$this->_prevIndexTerm = null;
$this->_prevIndexTermInfo = null;
$this->_lastIndexPosition = 24;
$this->_termCount = 0;
}
/**
* Adds a document to this segment.
*
* @param Zend_Search_Lucene_Document $document
* @throws Zend_Search_Lucene_Exception
*/
public function addDocument(Zend_Search_Lucene_Document $document)
{
$storedFields = array();
foreach ($document->getFieldNames() as $fieldName) {
$field = $document->getField($fieldName);
$this->_addFieldInfo($field);
if ($field->storeTermVector) {
/**
* @todo term vector storing support
*/
throw new Zend_Search_Lucene_Exception('Store term vector functionality is not supported yet.');
}
if ($field->isIndexed) {
if ($field->isTokenized) {
$tokenList = Zend_Search_Lucene_Analysis_Analyzer::getDefault()->tokenize($field->stringValue);
} else {
$tokenList = array();
$tokenList[] = new Zend_Search_Lucene_Analysis_Token($field->stringValue, 0, strlen($field->stringValue));
}
$this->_fieldLengths[$field->name][$this->_docCount] = count($tokenList);
$position = 0;
foreach ($tokenList as $token) {
$term = new Zend_Search_Lucene_Index_Term($token->getTermText(), $field->name);
$termKey = $term->key();
if (!isset($this->_termDictionary[$termKey])) {
// New term
$this->_termDictionary[$termKey] = $term;
$this->_termDocs[$termKey] = array();
$this->_termDocs[$termKey][$this->_docCount] = array();
} else {
if (!isset($this->_termDocs[$termKey][$this->_docCount])) {
// Existing term, but new term entry
$this->_termDocs[$termKey][$this->_docCount] = array();
}
}
$position += $token->getPositionIncrement();
$this->_termDocs[$termKey][$this->_docCount][] = $position;
}
}
if ($field->isStored) {
$storedFields[] = $field;
}
}
if (count($storedFields) != 0) {
if (!isset($this->_fdxFile)) {
$this->_fdxFile = $this->_directory->createFile($this->_name . '.fdx');
$this->_fdtFile = $this->_directory->createFile($this->_name . '.fdt');
$this->_files[] = $this->_name . '.fdx';
$this->_files[] = $this->_name . '.fdt';
}
$this->_fdxFile->writeLong($this->_fdtFile->tell());
$this->_fdtFile->writeVInt(count($storedFields));
foreach ($storedFields as $field) {
$this->_fdtFile->writeVInt($this->_fields[$field->name]->number);
$fieldBits = ($field->isTokenized ? 0x1 : 0x0) | ($field->isBinary ? 0x2 : 0x0) | 0x0;
/* 0x04 - third bit, compressed (ZLIB) */
$this->_fdtFile->writeByte($fieldBits);
if ($field->isBinary) {
$this->_fdtFile->writeVInt(strlen($field->stringValue));
$this->_fdtFile->writeBytes($field->stringValue);
} else {
$this->_fdtFile->writeString($field->stringValue);
}
}
}
$this->_docCount++;
}
