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 setUp()
{
$forkRate = 16;
$file = new FileResourceProxy(fopen("php://memory", "w"));
$doublesFile = new FileResourceProxy(fopen("php://memory", "w"));
$tableSchemaFile = new FileResourceProxy(fopen("php://memory", "w"));
$indexSchemaFile = new FileResourceProxy(fopen("php://memory", "w"));
$tableSchema = new TableSchema($tableSchemaFile, $indexSchemaFile);
$columnPageA = new ColumnSchema();
$columnPageA->setName("columnB");
$columnPageA->setIndex(0);
$columnPageA->setDataType(DataType::INT());
$columnPageA->setLength(4);
$tableSchema->addColumnSchema($columnPageA);
$columnPageB = new ColumnSchema();
$columnPageB->setName("columnC");
$columnPageB->setIndex(1);
$columnPageB->setDataType(DataType::VARCHAR());
$columnPageB->setLength(4);
$tableSchema->addColumnSchema($columnPageB);
$indexPage = new IndexSchema();
$indexPage->setName("test-index");
$indexPage->setColumns([0, 1]);
$indexPage->setType(Type::INDEX());
$indexPage->setEngine(IndexEngine::BTREE());
$this->btree = new BTree($file, $tableSchema, $indexPage, $forkRate);
$this->btree->setDoublesFile($doublesFile);
$this->btree->setIsDevelopmentMode(true);
}
public function createIndex($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;
}
public function setUp()
{
$columnSchemaA = new ColumnSchema();
$columnSchemaA->setName("foo");
$columnSchemaA->setDataType(DataType::INTEGER());
$columnSchemaA->setLength(4);
$columnSchemaA->setExtraFlags(ColumnSchema::EXTRA_PRIMARY_KEY);
$columnSchemaB = new ColumnSchema();
$columnSchemaB->setName("baz");
$columnSchemaB->setDataType(DataType::VARCHAR());
$columnSchemaB->setLength(12);
$columnSchemaC = new ColumnSchema();
$columnSchemaC->setName("bar");
$columnSchemaC->setDataType(DataType::DATETIME());
$columnSchemaC->setLength(19);
$indexSchema = new IndexSchema();
$indexSchema->setName("idx_foo");
$indexSchema->setColumns([0]);
# n'th index in $columnData's
$indexSchema->setEngine(IndexEngine::BTREE());
$indexSchema->setType(Type::UNIQUE());
$indexSchema->setKeyLength(4);
$tableSchema = new TableSchema(new FileResourceProxy(fopen("php://memory", "w")), new FileResourceProxy(fopen("php://memory", "w")));
$tableSchema->addColumnSchema($columnSchemaA);
$tableSchema->addColumnSchema($columnSchemaB);
$tableSchema->addColumnSchema($columnSchemaC);
$tableSchema->addIndexSchema($indexSchema);
$this->table = new Table($tableSchema, [new ColumnData(new FileResourceProxy(fopen("php://memory", "w")), $columnSchemaA), new ColumnData(new FileResourceProxy(fopen("php://memory", "w")), $columnSchemaB), new ColumnData(new FileResourceProxy(fopen("php://memory", "w")), $columnSchemaC)], [new BTree(new FileResourceProxy(fopen("php://memory", "w")), $tableSchema, $indexSchema)], new FileResourceProxy(fopen("php://memory", "w")), new FileResourceProxy(fopen("php://memory", "w")));
}
public function executeJob(StatementJob $statement, array $parameters = array())
{
/* @var $statement CreateTableStatement */
$context = new ExecutionContext($this->schemaManager, $statement, $parameters);
/* @var $databaseSchema Schema */
$databaseSchema = $this->schemaManager->getSchema();
$schemaId = $this->schemaManager->getCurrentlyUsedDatabaseId();
$tableName = $this->valueResolver->resolveValue($statement->getName(), $context);
$schemaPage = new DatabaseSchemaPage();
$schemaPage->setName($tableName);
$schemaPage->setType(Type::TABLE());
$schemaPage->setEngine(Engine::factory($statement->getEngine()->getName()));
$schemaPage->setCollation(strtoupper($statement->getCollate()));
$schemaPage->setUseChecksum($statement->getUseChecksum());
$schemaPage->setMaxRows($statement->getMaximumRows());
$schemaPage->setMinRows($statement->getMinimumRows());
$schemaPage->setPackKeys($statement->getPackKeys());
$schemaPage->setDelayKeyWrite($statement->getDelayKeyWrite());
$schemaPage->setRowFormat(RowFormat::factory($statement->getRowFormat()));
$schemaPage->setInsertMethod(InsertMethod::factory($statement->getInsertMethod()));
$databaseSchema->registerTableSchema($schemaPage);
/* @var $tableSchema TableSchema */
$tableSchema = $this->schemaManager->getTableSchema($tableName);
assert($tableSchema instanceof TableSchema);
### WRITE COLUMNS
switch (true) {
case is_array($statement->getColumnDefinition()):
foreach ($statement->getColumnDefinition() as $name => $column) {
/* @var $column ColumnDefinition */
$columnPage = new ColumnSchema();
$columnPage->setName($name);
$columnPage->setDataType(DataType::factory($column->getDataType()->getName()));
/* @var $dataType DataType */
$dataType = $columnPage->getDataType();
$flags = 0;
if ($column->getIsPrimaryKey()) {
$flags = $flags ^ ColumnSchema::EXTRA_PRIMARY_KEY;
}
if ($column->getIsUnique()) {
$flags = $flags ^ ColumnSchema::EXTRA_UNIQUE_KEY;
}
if (!$column->getIsNullable()) {
$flags = $flags ^ ColumnSchema::EXTRA_NOT_NULL;
}
if ($column->getIsAutoIncrement()) {
$flags = $flags ^ ColumnSchema::EXTRA_AUTO_INCREMENT;
}
$columnPage->setExtraFlags($flags);
/* @var $dataType DataType */
$dataType = $column->getDataType();
$columnPage->setLength($dataType->getByteLength());
$columnPage->setSecondLength($dataType->getSecondByteLength());
if (!is_null($column->getDataTypeLength())) {
$columnPage->setLength($column->getDataTypeLength());
}
if (!is_null($column->getDataTypeSecondLength())) {
$columnPage->setSecondLength($column->getDataTypeSecondLength());
}
if (!is_null($column->getDefaultValue()) && !$columnPage->isDefaultValueInFile()) {
$columnPage->setDefaultValue($column->getDefaultValue());
}
$columnIndex = $tableSchema->addColumnSchema($columnPage);
if (!is_null($column->getDefaultValue()) && $columnPage->isDefaultValueInFile()) {
$defaultValueFilepath = sprintf(FilePathes::FILEPATH_DEFAULT_VALUE, $schemaId, $tableName, $columnIndex);
$this->tableManager->getFilesystem()->putFileContents($defaultValueFilepath, $column->getDefaultValue());
}
}
break;
case $statement->getColumnDefinition() instanceof Select:
break;
case $statement->getColumnDefinition() instanceof TableInterface:
break;
}
foreach ($statement->getIndexes() as $indexName => $index) {
/* @var $index Index */
$indexSchemaPage = new IndexSchema();
$indexSchemaPage->setName($indexName);
$indexSchemaPage->setEngine(IndexEngine::BTREE());
switch (true) {
case $index->getIsPrimary():
$indexSchemaPage->setType(IndexType::PRIMARY());
break;
case $index->getIsUnique():
$indexSchemaPage->setType(IndexType::UNIQUE());
break;
default:
$indexSchemaPage->setType(IndexType::INDEX());
break;
}
$method = ForeignKeyMethod::factory($index->getForeignKeyOnDeleteReferenceOption()->getName());
$indexSchemaPage->setForeignKeyOnDeleteMethod($method);
$method = ForeignKeyMethod::factory($index->getForeignKeyOnUpdateReferenceOption()->getName());
$indexSchemaPage->setForeignKeyOnUpdateMethod($method);
$keyLength = 0;
$columns = array();
foreach ($index->getColumns() as $indexColumnName) {
$indexColumnId = $tableSchema->getColumnIndex((string) $indexColumnName);
if (strlen($indexColumnId) <= 0) {
throw new ErrorException("Could not find index column '{$indexColumnName}' in table-schema!");
}
$columns[] = $indexColumnId;
$keyLength += $statement->getColumnDefinition()[(string) $indexColumnName]->getDataSize();
}
$indexSchemaPage->setColumns($columns);
$indexSchemaPage->setKeyLength($keyLength);
$tableSchema->addIndexSchema($indexSchemaPage);
}
foreach ($this->tableManager->getTableFactories() as $tableFactory) {
/* @var $tableFactory TableFactoryInterface */
if ($tableFactory instanceof InformationSchemaTableFactory) {
$tableFactory->clearCache();
}
}
### RESULT
$result = new TemporaryResult();
$result->setIsSuccess(true);
return $result;
}
public function getIndexSchema($index)
{
$file = $this->getIndexFile();
$file->seek($index * IndexSchema::PAGE_SIZE, SEEK_SET);
$data = $file->read(IndexSchema::PAGE_SIZE);
if (strlen($data) !== IndexSchema::PAGE_SIZE) {
return null;
}
$indexSchema = new IndexSchema();
$indexSchema->setData($data);
$indexSchema->setId($index);
return $indexSchema;
}