public function createIndex($schemaId, $tableId, $indexId, TableSchemaInterface $tableSchema, IndexSchema $indexSchema)
{
$indexDataFilepath = sprintf(FilePathes::FILEPATH_INDEX_DATA, $schemaId, $tableId, $indexId);
$indexDataFile = $this->filesystem->getFile($indexDataFilepath);
$filePath = sprintf(FilePathes::FILEPATH_TABLE_COLUMN_INDEX, $schemaId, $tableId, $indexId);
$indexDoublesFilepath = "";
$indexDoublesFile = null;
if (!$indexSchema->isUnique()) {
$indexDoublesFilepath = sprintf(FilePathes::FILEPATH_INDEX_DOUBLES, $schemaId, $tableId, $indexId);
$indexDoublesFile = $this->filesystem->getFile($indexDoublesFilepath);
}
$engine = $indexSchema->getEngine();
/* @var $index IndexInterface */
$index = null;
if ($this->hasIndexFactory($engine)) {
/* @var $indexFactory IndexFactoryInterface */
$indexFactory = $this->getIndexFactory($engine);
$index = $indexFactory->createIndex($schemaId, $tableId, $indexId, $tableSchema, $indexSchema);
} else {
switch ($engine) {
default:
case IndexEngine::RTREE():
$engineName = "UNKNOWN";
if (is_object($indexSchema->getEngine())) {
$engineName = $indexSchema->getEngine()->getName();
}
trigger_error("Requested unimplemented INDEX-ENGINE {$engineName}, using B-TREE instead!", E_USER_NOTICE);
# Use B-TREE instead of unimplemented index-engine
# Use B-TREE instead of unimplemented index-engine
case IndexEngine::BTREE():
$index = new BTree($indexDataFile, $tableSchema, $indexSchema);
if (!$indexSchema->isUnique()) {
$index->setDoublesFile($indexDoublesFile);
}
break;
case IndexEngine::HASH():
$index = new HashTable($indexDataFile, $indexSchema->getKeyLength());
if (!$indexSchema->isUnique()) {
$index->setDoublesFile($indexDoublesFile);
}
break;
}
}
return $index;
}
