public function __construct(FileInterface $file, TableSchemaInterface $tableSchema, IndexSchema $indexPage = null, $forkRate = 33)
{
$keyLength = 0;
foreach ($indexPage->getColumns() as $columnId) {
/* @var $columnPage ColumnSchema */
$columnPage = $tableSchema->getColumn($columnId);
assert(!is_null($columnPage));
$keyLength += $columnPage->getCellSize();
}
if ($keyLength < 4) {
$keyLength = 4;
}
if (!is_numeric($forkRate)) {
throw new \ErrorException("Forkrate has to specified as integer!");
}
$forkRate = (int) $forkRate;
$this->file = $file;
$this->setKeyLength($keyLength);
$this->forkRate = $forkRate;
$this->tableSchema = $tableSchema;
$this->indexPage = $indexPage;
// if file is empty, initialize it
if ($file->getLength() <= 1) {
$file->setData(str_pad("", $keyLength * 8, ""));
$rootNode = new BTreeNodePage();
$rootNode->setKeyLength($keyLength);
$rootNode->setForkRate($this->forkRate);
// make sure root-reference is in index 1, not 0.
// that way we can use reference 0 as 'not defined'/'not used'
$this->setRootReference(1);
$this->writeNode($rootNode, 1);
}
}
public function createTable($schemaId, $tableId, TableSchemaInterface $tableSchema, IndexFactoryInterface $indexFactory)
{
$autoincrementFilePath = sprintf(FilePathes::FILEPATH_AUTOINCREMENT, $schemaId, $tableId);
$deletedRowsFilepath = sprintf(FilePathes::FILEPATH_DELETED_ROWS, $schemaId, $tableId);
/* @var $autoincrementFile FileInterface */
$autoincrementFile = $this->filesystem->getFile($autoincrementFilePath);
/* @var $deletedRowsFile FileInterface */
$deletedRowsFile = $this->filesystem->getFile($deletedRowsFilepath);
$columnDatas = array();
foreach ($tableSchema->getColumnIterator() as $columnId => $columnSchema) {
/* @var $columnSchema ColumnSchema */
$columnDatas[$columnId] = $this->columnDataFactory->createColumnData($schemaId, $tableId, $columnId, $columnSchema);
}
$indexes = array();
foreach ($tableSchema->getIndexIterator() as $indexId => $indexSchema) {
/* @var $indexSchema IndexSchema */
$indexes[$indexId] = $indexFactory->createIndex($schemaId, $tableId, $indexId, $tableSchema, $indexSchema);
}
$table = new Table($tableSchema, $columnDatas, $indexes, $autoincrementFile, $deletedRowsFile, $valueResolver = null, $dataConverter = null);
return $table;
}