// Inherit interface docs.
@Override
public TableInfo createTable(String tableName, TableSchema schema, CommandProperties properties)
throws IOException {
int pageSize = StorageManager.getCurrentPageSize();
String storageType = "heap";
ArrayList<Integer> hashColumns = new ArrayList<Integer>();
if (properties != null) {
logger.info("Using command properties " + properties);
pageSize = properties.getInt("pagesize", pageSize);
storageType = properties.getString("storage", storageType);
String hashString = properties.getString("hashkey", null);
if (hashString != null) {
List<String> hashList = Arrays.asList(hashString.split("\\s*,\\s*"));
for (String s : hashList) {
hashColumns.add(Integer.valueOf(s));
}
}
HashSet<String> names = new HashSet<String>(properties.getNames());
names.remove("pagesize");
names.remove("storage");
names.remove("hashkey");
if (!names.isEmpty()) {
throw new IllegalArgumentException(
"Unrecognized property " + "name(s) specified: " + names);
}
}
String tblFileName = getTableFileName(tableName);
DBFileType type;
if ("heap".equals(storageType)) {
type = DBFileType.HEAP_TUPLE_FILE;
} else if ("btree".equals(storageType)) {
type = DBFileType.BTREE_TUPLE_FILE;
} else if ("lin-hash".equals(storageType)) {
type = DBFileType.LINEAR_HASH_FILE;
if (hashColumns.isEmpty()) {
throw new IllegalArgumentException("Hash storage must specify a key!");
}
} else {
throw new IllegalArgumentException("Unrecognized table file " + "type: " + storageType);
}
TupleFileManager tupleFileManager = storageManager.getTupleFileManager(type);
// First, create a new DBFile that the tuple file will go into.
FileManager fileManager = storageManager.getFileManager();
DBFile dbFile = fileManager.createDBFile(tblFileName, type, pageSize);
logger.debug("Created new DBFile for table " + tableName + " at path " + dbFile.getDataFile());
// Now, initialize it to be a tuple file with the specified type and
// schema.
TupleFile tupleFile;
if (type == DBFileType.LINEAR_HASH_FILE) {
DBFile overflow =
fileManager.createDBFile("ovflw_" + tblFileName, DBFileType.OVERFLOW_FILE, pageSize);
HashTupleFileManager hashManager = (HashTupleFileManager) tupleFileManager;
tupleFile = hashManager.createTupleFile(dbFile, schema, hashColumns, overflow);
} else {
tupleFile = tupleFileManager.createTupleFile(dbFile, schema);
}
// Cache this table since it's now considered "open".
TableInfo tableInfo = new TableInfo(tableName, tupleFile);
openTables.put(tableName, tableInfo);
return tableInfo;
}
// Inherit interface docs.
@Override
public void saveTableInfo(TableInfo tableInfo) throws IOException {
TupleFile tupleFile = tableInfo.getTupleFile();
TupleFileManager manager = tupleFile.getManager();
manager.saveMetadata(tupleFile);
}
