/**
* Method declaration
*
* @throws SQLException
*/
void checkpoint(boolean defrag) throws SQLException {
if (defrag) {
ArrayList rootsArray = cCache.defrag();
for (int i = 0; i < rootsArray.size(); i++) {
int[] roots = (int[]) rootsArray.get(i);
if (roots != null) {
Trace.printSystemOut(org.hsqldb.lib.StringUtil.getList(roots, " ", ""));
}
}
DataFileDefrag2.updateTableIndexRoots(dDatabase.getTables(), rootsArray);
}
close(false);
pProperties.setProperty("modified", "yes");
pProperties.save();
if (cCache != null) {
cCache.open(false);
}
reopenAllTextCaches();
openScript();
}
private void create() throws SQLException {
if (Trace.TRACE) {
Trace.trace(sName);
}
pProperties.setProperty("version", jdbcDriver.VERSION);
pProperties.setProperty("sql.strict_fk", true);
pProperties.save();
}
/**
* Opens this database. The database should be opened after construction. or reopened by the
* close(int closemode) method during a "shutdown compact". Closes the log if there is an error.
*/
void reopen() throws HsqlException {
setState(DATABASE_OPENING);
try {
User sysUser;
isNew =
(sType == DatabaseManager.S_MEM
|| !HsqlProperties.checkFileExists(sPath, isFilesInJar(), getClass()));
databaseProperties = new HsqlDatabaseProperties(this);
databaseProperties.load();
databaseProperties.setURLProperties(urlProperties);
compiledStatementManager.reset();
tTable = new HsqlArrayList();
userManager = new UserManager();
hAlias = Library.getAliasMap();
nameManager = new HsqlNameManager();
triggerNameList = new DatabaseObjectNames();
indexNameList = new DatabaseObjectNames();
constraintNameList = new DatabaseObjectNames();
sequenceManager = new SequenceManager();
bReferentialIntegrity = true;
sysUser = userManager.createSysUser(this);
sessionManager = new SessionManager(this, sysUser);
dInfo = DatabaseInformation.newDatabaseInformation(this);
if (sType != DatabaseManager.S_MEM) {
logger.openLog(this);
}
if (isNew) {
sessionManager
.getSysSession()
.sqlExecuteDirectNoPreChecks("CREATE USER SA PASSWORD \"\" ADMIN");
}
dInfo.setWithContent(true);
} catch (Throwable e) {
logger.closeLog(Database.CLOSEMODE_IMMEDIATELY);
logger.releaseLock();
setState(DATABASE_SHUTDOWN);
clearStructures();
if (!(e instanceof HsqlException)) {
e = Trace.error(Trace.GENERAL_ERROR, e.toString());
}
throw (HsqlException) e;
}
setState(DATABASE_ONLINE);
}
/**
* Method declaration
*
* @return
* @throws SQLException
*/
private boolean isAlreadyOpen() throws SQLException {
// reading the last modified, wait 3 seconds, read again.
// if the same information was read the file was not changed
// and is probably, except the other process is blocked
if (Trace.TRACE) {
Trace.trace();
}
File f = new File(sName + ".lock");
long l1 = f.lastModified();
try {
Thread.sleep(3000);
} catch (Exception e) {
}
long l2 = f.lastModified();
if (l1 != l2) {
return true;
}
return pProperties.isFileOpen();
}
Cache openTextCache(String table, String source, boolean readOnlyData, boolean reversed)
throws SQLException {
closeTextCache(table);
if (pProperties.getProperty("textdb.allow_full_path", "false").equals("false")) {
if (source.indexOf("..") != -1) {
throw (Trace.error(Trace.ACCESS_IS_DENIED, source));
}
String path = new File(new File(sName).getAbsolutePath()).getParent();
if (path != null) {
source = path + File.separator + source;
}
}
String prefix = "textdb." + table.toLowerCase() + ".";
TextCache c;
if (reversed) {
c = new ReverseTextCache(source, prefix, dDatabase);
} else {
c = new TextCache(source, prefix, dDatabase);
}
c.open(readOnlyData || bReadOnly);
textCacheList.put(table, c);
return (c);
}
/**
* Method declaration
*
* @param compact
* @throws SQLException
*/
void close(boolean compact) throws SQLException {
if (Trace.TRACE) {
Trace.trace();
}
if (bReadOnly) {
return;
}
// no more scripting
closeScript();
// create '.script.new' (for this the cache may be still required)
writeScript(compact);
// flush the cache (important: after writing the script)
if (cCache != null) {
cCache.flush();
}
closeAllTextCaches(compact);
// create '.backup.new' using the '.data'
backup();
// we have the new files
pProperties.setProperty("modified", "yes-new-files");
pProperties.save();
// old files can be removed and new files renamed
renameNewToCurrent(sFileScript);
renameNewToCurrent(sFileBackup);
// now its done completely
pProperties.setProperty("modified", "no");
pProperties.setProperty("version", jdbcDriver.VERSION);
pProperties.setProperty("hsqldb.compatible_version", "1.7.0");
pProperties.save();
pProperties.close();
if (compact) {
// stop the runner thread of this process (just for security)
stop();
// delete the .data so then a new file is created
(new File(sFileCache)).delete();
(new File(sFileBackup)).delete();
// tony_lai@users 20020820
// The database re-open and close has been moved to
// Database#close(int closemode) for saving memory usage.
}
}
/**
* Method declaration
*
* @throws SQLException
*/
void shutdown() throws SQLException {
tRunner = null;
if (cCache != null) {
cCache.closeFile();
cCache = null;
}
shutdownAllTextCaches();
closeScript();
pProperties.close();
}
/**
* Opens this database. The database can be opened by the constructor, or reopened by the
* close(int closemode) method during a "shutdown compact".
*
* @see #close(int closemode)
* @throws SQLException if a database access error occurs
*/
private void open() throws SQLException {
boolean newdatabase;
User sysUser;
if (sName.length() == 0) {
throw Trace.error(Trace.GENERAL_ERROR, "bad database name");
}
setState(DATABASE_OPENING);
compiledStatementManager.reset();
tTable = new HsqlArrayList();
aAccess = new UserManager();
hAlias = Library.getAliasMap();
triggerNameList = new DatabaseObjectNames();
indexNameList = new DatabaseObjectNames();
bReferentialIntegrity = true;
newdatabase = false;
sysUser = aAccess.createSysUser(this);
sessionManager = new SessionManager(this, sysUser);
databaseProperties = new HsqlDatabaseProperties(this);
dInfo = DatabaseInformation.newDatabaseInformation(this);
if (sName.equals(".")) {
newdatabase = true;
} else {
// create properties file if not exits and report if new file
newdatabase = !databaseProperties.load();
logger.openLog(this, sName);
}
if (newdatabase) {
execute("CREATE USER SA PASSWORD \"\" ADMIN", sessionManager.getSysSession());
}
setState(DATABASE_ONLINE);
dInfo.setWithContent(true);
}
/**
* Method declaration
*
* @param mb
*/
void setLogSize(int mb) {
iLogSize = mb;
pProperties.setProperty("hsqldb.log_size", iLogSize);
}
/**
* When opening a database, the hsqldb.compatible_version property is used to determine if this
* version of the engine is equal to or greater than the earliest version of the engine capable of
* opening that database.
*
* <p>
*
* @return
* @throws SQLException
*/
boolean open() throws SQLException {
if (Trace.TRACE) {
Trace.trace();
}
if (!pProperties.checkFileExists()) {
create();
open();
// this is a new database
return true;
}
// todo: some parts are not necessary for ready-only access
pProperties.load();
sFileScript = sName + ".script";
sFileCache = sName + ".data";
sFileBackup = sName + ".backup";
scriptChecker = new File(sFileScript);
// tony_lai@users 20020820
// Allows the user to modify log size from the properties file.
iLogSize = pProperties.getIntegerProperty("hsqldb.log_size", iLogSize);
String version = pProperties.getProperty("hsqldb.compatible_version");
// fredt@users 20020428 - patch 1.7.0 by fredt
int check = version.substring(0, 5).compareTo(jdbcDriver.VERSION);
Trace.check(check <= 0, Trace.WRONG_DATABASE_FILE_VERSION);
// save the current version
pProperties.setProperty("hsqldb.version", jdbcDriver.VERSION);
if (pProperties.isPropertyTrue("readonly")) {
bReadOnly = true;
dDatabase.setReadOnly();
if (cCache != null) {
cCache.open(true);
}
reopenAllTextCaches();
runScript();
return false;
}
boolean needbackup = false;
String state = pProperties.getProperty("modified");
if (state.equals("yes-new-files")) {
renameNewToCurrent(sFileScript);
renameNewToCurrent(sFileBackup);
} else if (state.equals("yes")) {
if (isAlreadyOpen()) {
throw Trace.error(Trace.DATABASE_ALREADY_IN_USE);
}
// recovering after a crash (or forgot to close correctly)
restoreBackup();
needbackup = true;
}
pProperties.setProperty("modified", "yes");
pProperties.save();
if (cCache != null) {
cCache.open(false);
}
reopenAllTextCaches();
runScript();
if (needbackup) {
close(false);
pProperties.setProperty("modified", "yes");
pProperties.save();
if (cCache != null) {
cCache.open(false);
}
reopenAllTextCaches();
}
openScript();
// this is an existing database
return false;
}
