/**
* Create a connection info object.
*
* @param u the database URL (must start with jdbc:h2:)
* @param info the connection properties
*/
public ConnectionInfo(String u, Properties info) {
u = remapURL(u);
this.originalURL = u; // originalURL不会再变
if (!u.startsWith(Constants.START_URL)) { // "jdbc:h2:"
throw DbException.getInvalidValueException("url", u);
}
this.url = u; // url在接下来的代码中会再变，去掉参数
readProperties(info);
readSettingsFromURL();
setUserName(removeProperty("USER", ""));
convertPasswords();
// 去掉"jdbc:h2:"，比如jdbc:h2:tcp://localhost:9092/test9
// name = tcp://localhost:9092/test9
name = url.substring(Constants.START_URL.length());
parseName();
String recoverTest = removeProperty("RECOVER_TEST", null);
if (recoverTest != null) {
FilePathRec.register();
try {
Utils.callStaticMethod("org.h2.store.RecoverTester.init", recoverTest);
} catch (Exception e) {
throw DbException.convert(e);
}
name = "rec:" + name;
}
}
private void sendError(Throwable t) {
try {
SQLException e = DbException.convert(t).getSQLException();
StringWriter writer = new StringWriter();
e.printStackTrace(new PrintWriter(writer));
String trace = writer.toString();
String message;
String sql;
if (e instanceof JdbcSQLException) {
JdbcSQLException j = (JdbcSQLException) e;
message = j.getOriginalMessage();
sql = j.getSQL();
} else {
message = e.getMessage();
sql = null;
}
transfer
.writeInt(SessionRemote.STATUS_ERROR)
.writeString(e.getSQLState())
.writeString(message)
.writeString(sql)
.writeInt(e.getErrorCode())
.writeString(trace)
.flush();
} catch (Exception e2) {
if (!transfer.isClosed()) {
server.traceError(e2);
}
// if writing the error does not work, close the connection
stop = true;
}
}
private static String remapURL(String url) {
// 比如System.setProperty("h2.urlMap", "E:/H2/my-h2/my-h2-src/my/test/h2.urlMap.properties");
// 假设url="my.url"，那么可以在h2.urlMap.properties中重新映射:
// my.url=my.url=jdbc:h2:tcp://localhost:9092/test9
// 最后返回的url实际是jdbc:h2:tcp://localhost:9092/test9
String urlMap = SysProperties.URL_MAP;
if (urlMap != null && urlMap.length() > 0) {
try {
SortedProperties prop;
prop = SortedProperties.loadProperties(urlMap);
String url2 = prop.getProperty(url);
if (url2 == null) {
prop.put(url, "");
prop.store(urlMap);
} else {
url2 = url2.trim();
if (url2.length() > 0) {
return url2;
}
}
} catch (IOException e) {
throw DbException.convert(e);
}
}
return url;
}
/**
* Called to flush the output after data has been sent to the server and just before receiving
* data. This method also reads the status code from the server and throws any exception the
* server sent.
*
* @param transfer the transfer object
* @throws DbException if the server sent an exception
* @throws IOException if there is a communication problem between client and server
*/
public void done(Transfer transfer) throws IOException {
transfer.flush();
int status = transfer.readInt();
if (status == STATUS_ERROR) {
String sqlstate = transfer.readString();
String message = transfer.readString();
String sql = transfer.readString();
int errorCode = transfer.readInt();
String stackTrace = transfer.readString();
JdbcSQLException s =
new JdbcSQLException(message, sql, sqlstate, errorCode, null, stackTrace);
if (errorCode == ErrorCode.CONNECTION_BROKEN_1) {
// allow re-connect
IOException e = new IOException(s.toString(), s);
throw e;
}
throw DbException.convert(s);
} else if (status == STATUS_CLOSED) {
transferList = null;
} else if (status == STATUS_OK_STATE_CHANGED) {
sessionStateChanged = true;
} else if (status == STATUS_OK) {
// ok
} else {
throw DbException.get(ErrorCode.CONNECTION_BROKEN_1, "unexpected status " + status);
}
}
/**
* Encode the string as an URL.
*
* @param s the string to encode
* @return the encoded string
*/
public static String urlEncode(String s) {
try {
return URLEncoder.encode(s, "UTF-8");
} catch (Exception e) {
// UnsupportedEncodingException
throw DbException.convert(e);
}
}
public AggregateFunction getInstance() {
if (javaClass == null) {
javaClass = Utils.loadUserClass(className);
}
Object obj;
try {
obj = javaClass.newInstance();
AggregateFunction agg = (AggregateFunction) obj;
return agg;
} catch (Exception e) {
throw DbException.convert(e);
}
}
@Override
public Expression optimize(Session session) {
userConnection = session.createConnection(false);
int len = args.length;
argTypes = new int[len];
for (int i = 0; i < len; i++) {
Expression expr = args[i];
args[i] = expr.optimize(session);
int type = expr.getType();
argTypes[i] = type;
}
try {
Aggregate aggregate = getInstance();
dataType = aggregate.getInternalType(argTypes);
} catch (SQLException e) {
throw DbException.convert(e);
}
return this;
}
/**
* Open a new (remote or embedded) session.
*
* @param openNew whether to open a new session in any case
* @return the session
*/
public SessionInterface connectEmbeddedOrServer(boolean openNew) {
ConnectionInfo ci = connectionInfo;
if (ci.isRemote()) {
connectServer(ci);
return this;
}
// create the session using reflection,
// so that the JDBC layer can be compiled without it
boolean autoServerMode = Boolean.parseBoolean(ci.getProperty("AUTO_SERVER", "false"));
ConnectionInfo backup = null;
try {
if (autoServerMode) {
backup = ci.clone();
connectionInfo = ci.clone();
}
if (openNew) {
ci.setProperty("OPEN_NEW", "true");
}
if (sessionFactory == null) {
sessionFactory =
(SessionFactory)
Class.forName("org.h2.engine.Engine").getMethod("getInstance").invoke(null);
}
return sessionFactory.createSession(ci);
} catch (Exception re) {
DbException e = DbException.convert(re);
if (e.getErrorCode() == ErrorCode.DATABASE_ALREADY_OPEN_1) {
if (autoServerMode) {
String serverKey = ((JdbcSQLException) e.getSQLException()).getSQL();
if (serverKey != null) {
backup.setServerKey(serverKey);
// OPEN_NEW must be removed now, otherwise
// opening a session with AUTO_SERVER fails
// if another connection is already open
backup.removeProperty("OPEN_NEW", null);
connectServer(backup);
return this;
}
}
}
throw e;
}
}
@Override
public Value getValue(Session session) {
HashMap<Expression, Object> group = select.getCurrentGroup();
if (group == null) {
throw DbException.get(ErrorCode.INVALID_USE_OF_AGGREGATE_FUNCTION_1, getSQL());
}
try {
Aggregate agg = (Aggregate) group.get(this);
if (agg == null) {
agg = getInstance();
}
Object obj = agg.getResult();
if (obj == null) {
return ValueNull.INSTANCE;
}
return DataType.convertToValue(session, obj, dataType);
} catch (SQLException e) {
throw DbException.convert(e);
}
}
@Override
public void updateAggregate(Session session) {
HashMap<Expression, Object> group = select.getCurrentGroup();
if (group == null) {
// this is a different level (the enclosing query)
return;
}
int groupRowId = select.getCurrentGroupRowId();
if (lastGroupRowId == groupRowId) {
// already visited
return;
}
lastGroupRowId = groupRowId;
Aggregate agg = (Aggregate) group.get(this);
try {
if (agg == null) {
agg = getInstance();
group.put(this, agg);
}
Object[] argValues = new Object[args.length];
Object arg = null;
for (int i = 0, len = args.length; i < len; i++) {
Value v = args[i].getValue(session);
v = v.convertTo(argTypes[i]);
arg = v.getObject();
argValues[i] = arg;
}
if (args.length == 1) {
agg.add(arg);
} else {
agg.add(argValues);
}
} catch (SQLException e) {
throw DbException.convert(e);
}
}
private void initJavaObjectSerializer() {
if (javaObjectSerializerInitialized) {
return;
}
synchronized (this) {
if (javaObjectSerializerInitialized) {
return;
}
String serializerFQN = readSerializationSettings();
if (serializerFQN != null) {
serializerFQN = serializerFQN.trim();
if (!serializerFQN.isEmpty() && !serializerFQN.equals("null")) {
try {
javaObjectSerializer =
(JavaObjectSerializer) JdbcUtils.loadUserClass(serializerFQN).newInstance();
} catch (Exception e) {
throw DbException.convert(e);
}
}
}
javaObjectSerializerInitialized = true;
}
}
/**
* Calculate the number of bytes required to encode the given value.
*
* @param v the value
* @param handler the data handler for lobs
* @return the number of bytes required to store this value
*/
public static int getValueLen(Value v, DataHandler handler) {
if (v == ValueNull.INSTANCE) {
return 1;
}
switch (v.getType()) {
case Value.BOOLEAN:
return 1;
case Value.BYTE:
return 2;
case Value.SHORT:
return 3;
case Value.INT:
{
int x = v.getInt();
if (x < 0) {
return 1 + getVarIntLen(-x);
} else if (x < 16) {
return 1;
} else {
return 1 + getVarIntLen(x);
}
}
case Value.LONG:
{
long x = v.getLong();
if (x < 0) {
return 1 + getVarLongLen(-x);
} else if (x < 8) {
return 1;
} else {
return 1 + getVarLongLen(x);
}
}
case Value.DOUBLE:
{
double x = v.getDouble();
if (x == 1.0d) {
return 1;
}
long d = Double.doubleToLongBits(x);
if (d == ValueDouble.ZERO_BITS) {
return 1;
}
return 1 + getVarLongLen(Long.reverse(d));
}
case Value.FLOAT:
{
float x = v.getFloat();
if (x == 1.0f) {
return 1;
}
int f = Float.floatToIntBits(x);
if (f == ValueFloat.ZERO_BITS) {
return 1;
}
return 1 + getVarIntLen(Integer.reverse(f));
}
case Value.STRING:
{
String s = v.getString();
int len = s.length();
if (len < 32) {
return 1 + getStringWithoutLengthLen(s, len);
}
return 1 + getStringLen(s);
}
case Value.STRING_IGNORECASE:
case Value.STRING_FIXED:
return 1 + getStringLen(v.getString());
case Value.DECIMAL:
{
BigDecimal x = v.getBigDecimal();
if (BigDecimal.ZERO.equals(x)) {
return 1;
} else if (BigDecimal.ONE.equals(x)) {
return 1;
}
int scale = x.scale();
BigInteger b = x.unscaledValue();
int bits = b.bitLength();
if (bits <= 63) {
if (scale == 0) {
return 1 + getVarLongLen(b.longValue());
}
return 1 + getVarIntLen(scale) + getVarLongLen(b.longValue());
}
byte[] bytes = b.toByteArray();
return 1 + getVarIntLen(scale) + getVarIntLen(bytes.length) + bytes.length;
}
case Value.TIME:
if (SysProperties.STORE_LOCAL_TIME) {
long nanos = ((ValueTime) v).getNanos();
long millis = nanos / 1000000;
nanos -= millis * 1000000;
return 1 + getVarLongLen(millis) + getVarLongLen(nanos);
}
return 1 + getVarLongLen(DateTimeUtils.getTimeLocalWithoutDst(v.getTime()));
case Value.DATE:
{
if (SysProperties.STORE_LOCAL_TIME) {
long dateValue = ((ValueDate) v).getDateValue();
return 1 + getVarLongLen(dateValue);
}
long x = DateTimeUtils.getTimeLocalWithoutDst(v.getDate());
return 1 + getVarLongLen(x / MILLIS_PER_MINUTE);
}
case Value.TIMESTAMP:
{
if (SysProperties.STORE_LOCAL_TIME) {
ValueTimestamp ts = (ValueTimestamp) v;
long dateValue = ts.getDateValue();
long nanos = ts.getNanos();
long millis = nanos / 1000000;
nanos -= millis * 1000000;
return 1 + getVarLongLen(dateValue) + getVarLongLen(millis) + getVarLongLen(nanos);
}
Timestamp ts = v.getTimestamp();
return 1
+ getVarLongLen(DateTimeUtils.getTimeLocalWithoutDst(ts))
+ getVarIntLen(ts.getNanos());
}
case Value.GEOMETRY:
case Value.JAVA_OBJECT:
{
byte[] b = v.getBytesNoCopy();
return 1 + getVarIntLen(b.length) + b.length;
}
case Value.BYTES:
{
byte[] b = v.getBytesNoCopy();
int len = b.length;
if (len < 32) {
return 1 + b.length;
}
return 1 + getVarIntLen(b.length) + b.length;
}
case Value.UUID:
return 1 + LENGTH_LONG + LENGTH_LONG;
case Value.BLOB:
case Value.CLOB:
{
int len = 1;
if (v instanceof ValueLob) {
ValueLob lob = (ValueLob) v;
lob.convertToFileIfRequired(handler);
byte[] small = lob.getSmall();
if (small == null) {
int t = -1;
if (!lob.isLinked()) {
t = -2;
}
len += getVarIntLen(t);
len += getVarIntLen(lob.getTableId());
len += getVarIntLen(lob.getObjectId());
len += getVarLongLen(lob.getPrecision());
len += 1;
if (t == -2) {
len += getStringLen(lob.getFileName());
}
} else {
len += getVarIntLen(small.length);
len += small.length;
}
} else {
ValueLobDb lob = (ValueLobDb) v;
byte[] small = lob.getSmall();
if (small == null) {
len += getVarIntLen(-3);
len += getVarIntLen(lob.getTableId());
len += getVarLongLen(lob.getLobId());
len += getVarLongLen(lob.getPrecision());
} else {
len += getVarIntLen(small.length);
len += small.length;
}
}
return len;
}
case Value.ARRAY:
{
Value[] list = ((ValueArray) v).getList();
int len = 1 + getVarIntLen(list.length);
for (Value x : list) {
len += getValueLen(x, handler);
}
return len;
}
case Value.RESULT_SET:
{
int len = 1;
try {
ResultSet rs = ((ValueResultSet) v).getResultSet();
rs.beforeFirst();
ResultSetMetaData meta = rs.getMetaData();
int columnCount = meta.getColumnCount();
len += getVarIntLen(columnCount);
for (int i = 0; i < columnCount; i++) {
len += getStringLen(meta.getColumnName(i + 1));
len += getVarIntLen(meta.getColumnType(i + 1));
len += getVarIntLen(meta.getPrecision(i + 1));
len += getVarIntLen(meta.getScale(i + 1));
}
while (rs.next()) {
len++;
for (int i = 0; i < columnCount; i++) {
int t = DataType.getValueTypeFromResultSet(meta, i + 1);
Value val = DataType.readValue(null, rs, i + 1, t);
len += getValueLen(val, handler);
}
}
len++;
rs.beforeFirst();
} catch (SQLException e) {
throw DbException.convert(e);
}
return len;
}
default:
throw DbException.throwInternalError("type=" + v.getType());
}
}
/**
* Append a value.
*
* @param v the value
*/
public void writeValue(Value v) {
int start = pos;
if (v == ValueNull.INSTANCE) {
data[pos++] = 0;
return;
}
int type = v.getType();
switch (type) {
case Value.BOOLEAN:
writeByte((byte) (v.getBoolean().booleanValue() ? BOOLEAN_TRUE : BOOLEAN_FALSE));
break;
case Value.BYTE:
writeByte((byte) type);
writeByte(v.getByte());
break;
case Value.SHORT:
writeByte((byte) type);
writeShortInt(v.getShort());
break;
case Value.INT:
{
int x = v.getInt();
if (x < 0) {
writeByte((byte) INT_NEG);
writeVarInt(-x);
} else if (x < 16) {
writeByte((byte) (INT_0_15 + x));
} else {
writeByte((byte) type);
writeVarInt(x);
}
break;
}
case Value.LONG:
{
long x = v.getLong();
if (x < 0) {
writeByte((byte) LONG_NEG);
writeVarLong(-x);
} else if (x < 8) {
writeByte((byte) (LONG_0_7 + x));
} else {
writeByte((byte) type);
writeVarLong(x);
}
break;
}
case Value.DECIMAL:
{
BigDecimal x = v.getBigDecimal();
if (BigDecimal.ZERO.equals(x)) {
writeByte((byte) DECIMAL_0_1);
} else if (BigDecimal.ONE.equals(x)) {
writeByte((byte) (DECIMAL_0_1 + 1));
} else {
int scale = x.scale();
BigInteger b = x.unscaledValue();
int bits = b.bitLength();
if (bits <= 63) {
if (scale == 0) {
writeByte((byte) DECIMAL_SMALL_0);
writeVarLong(b.longValue());
} else {
writeByte((byte) DECIMAL_SMALL);
writeVarInt(scale);
writeVarLong(b.longValue());
}
} else {
writeByte((byte) type);
writeVarInt(scale);
byte[] bytes = b.toByteArray();
writeVarInt(bytes.length);
write(bytes, 0, bytes.length);
}
}
break;
}
case Value.TIME:
if (SysProperties.STORE_LOCAL_TIME) {
writeByte((byte) LOCAL_TIME);
ValueTime t = (ValueTime) v;
long nanos = t.getNanos();
long millis = nanos / 1000000;
nanos -= millis * 1000000;
writeVarLong(millis);
writeVarLong(nanos);
} else {
writeByte((byte) type);
writeVarLong(DateTimeUtils.getTimeLocalWithoutDst(v.getTime()));
}
break;
case Value.DATE:
{
if (SysProperties.STORE_LOCAL_TIME) {
writeByte((byte) LOCAL_DATE);
long x = ((ValueDate) v).getDateValue();
writeVarLong(x);
} else {
writeByte((byte) type);
long x = DateTimeUtils.getTimeLocalWithoutDst(v.getDate());
writeVarLong(x / MILLIS_PER_MINUTE);
}
break;
}
case Value.TIMESTAMP:
{
if (SysProperties.STORE_LOCAL_TIME) {
writeByte((byte) LOCAL_TIMESTAMP);
ValueTimestamp ts = (ValueTimestamp) v;
long dateValue = ts.getDateValue();
writeVarLong(dateValue);
long nanos = ts.getNanos();
long millis = nanos / 1000000;
nanos -= millis * 1000000;
writeVarLong(millis);
writeVarLong(nanos);
} else {
Timestamp ts = v.getTimestamp();
writeByte((byte) type);
writeVarLong(DateTimeUtils.getTimeLocalWithoutDst(ts));
writeVarInt(ts.getNanos());
}
break;
}
case Value.GEOMETRY:
case Value.JAVA_OBJECT:
{
writeByte((byte) type);
byte[] b = v.getBytesNoCopy();
int len = b.length;
writeVarInt(len);
write(b, 0, len);
break;
}
case Value.BYTES:
{
byte[] b = v.getBytesNoCopy();
int len = b.length;
if (len < 32) {
writeByte((byte) (BYTES_0_31 + len));
write(b, 0, len);
} else {
writeByte((byte) type);
writeVarInt(len);
write(b, 0, len);
}
break;
}
case Value.UUID:
{
writeByte((byte) type);
ValueUuid uuid = (ValueUuid) v;
writeLong(uuid.getHigh());
writeLong(uuid.getLow());
break;
}
case Value.STRING:
{
String s = v.getString();
int len = s.length();
if (len < 32) {
writeByte((byte) (STRING_0_31 + len));
writeStringWithoutLength(s, len);
} else {
writeByte((byte) type);
writeString(s);
}
break;
}
case Value.STRING_IGNORECASE:
case Value.STRING_FIXED:
writeByte((byte) type);
writeString(v.getString());
break;
case Value.DOUBLE:
{
double x = v.getDouble();
if (x == 1.0d) {
writeByte((byte) (DOUBLE_0_1 + 1));
} else {
long d = Double.doubleToLongBits(x);
if (d == ValueDouble.ZERO_BITS) {
writeByte((byte) DOUBLE_0_1);
} else {
writeByte((byte) type);
writeVarLong(Long.reverse(d));
}
}
break;
}
case Value.FLOAT:
{
float x = v.getFloat();
if (x == 1.0f) {
writeByte((byte) (FLOAT_0_1 + 1));
} else {
int f = Float.floatToIntBits(x);
if (f == ValueFloat.ZERO_BITS) {
writeByte((byte) FLOAT_0_1);
} else {
writeByte((byte) type);
writeVarInt(Integer.reverse(f));
}
}
break;
}
case Value.BLOB:
case Value.CLOB:
{
writeByte((byte) type);
if (v instanceof ValueLob) {
ValueLob lob = (ValueLob) v;
lob.convertToFileIfRequired(handler);
byte[] small = lob.getSmall();
if (small == null) {
int t = -1;
if (!lob.isLinked()) {
t = -2;
}
writeVarInt(t);
writeVarInt(lob.getTableId());
writeVarInt(lob.getObjectId());
writeVarLong(lob.getPrecision());
writeByte((byte) (lob.isCompressed() ? 1 : 0));
if (t == -2) {
writeString(lob.getFileName());
}
} else {
writeVarInt(small.length);
write(small, 0, small.length);
}
} else {
ValueLobDb lob = (ValueLobDb) v;
byte[] small = lob.getSmall();
if (small == null) {
writeVarInt(-3);
writeVarInt(lob.getTableId());
writeVarLong(lob.getLobId());
writeVarLong(lob.getPrecision());
} else {
writeVarInt(small.length);
write(small, 0, small.length);
}
}
break;
}
case Value.ARRAY:
{
writeByte((byte) type);
Value[] list = ((ValueArray) v).getList();
writeVarInt(list.length);
for (Value x : list) {
writeValue(x);
}
break;
}
case Value.RESULT_SET:
{
writeByte((byte) type);
try {
ResultSet rs = ((ValueResultSet) v).getResultSet();
rs.beforeFirst();
ResultSetMetaData meta = rs.getMetaData();
int columnCount = meta.getColumnCount();
writeVarInt(columnCount);
for (int i = 0; i < columnCount; i++) {
writeString(meta.getColumnName(i + 1));
writeVarInt(meta.getColumnType(i + 1));
writeVarInt(meta.getPrecision(i + 1));
writeVarInt(meta.getScale(i + 1));
}
while (rs.next()) {
writeByte((byte) 1);
for (int i = 0; i < columnCount; i++) {
int t = DataType.getValueTypeFromResultSet(meta, i + 1);
Value val = DataType.readValue(null, rs, i + 1, t);
writeValue(val);
}
}
writeByte((byte) 0);
rs.beforeFirst();
} catch (SQLException e) {
throw DbException.convert(e);
}
break;
}
default:
DbException.throwInternalError("type=" + v.getType());
}
if (SysProperties.CHECK2) {
if (pos - start != getValueLen(v, handler)) {
throw DbException.throwInternalError(
"value size error: got " + (pos - start) + " expected " + getValueLen(v, handler));
}
}
}
private void connectServer(ConnectionInfo ci) {
String name = ci.getName();
if (name.startsWith("//")) {
name = name.substring("//".length());
}
int idx = name.indexOf('/');
if (idx < 0) {
throw ci.getFormatException();
}
databaseName = name.substring(idx + 1);
String server = name.substring(0, idx);
traceSystem = new TraceSystem(null);
String traceLevelFile = ci.getProperty(SetTypes.TRACE_LEVEL_FILE, null);
if (traceLevelFile != null) {
int level = Integer.parseInt(traceLevelFile);
String prefix = getFilePrefix(SysProperties.CLIENT_TRACE_DIRECTORY);
try {
traceSystem.setLevelFile(level);
if (level > 0 && level < 4) {
String file = FileUtils.createTempFile(prefix, Constants.SUFFIX_TRACE_FILE, false, false);
traceSystem.setFileName(file);
}
} catch (IOException e) {
throw DbException.convertIOException(e, prefix);
}
}
String traceLevelSystemOut = ci.getProperty(SetTypes.TRACE_LEVEL_SYSTEM_OUT, null);
if (traceLevelSystemOut != null) {
int level = Integer.parseInt(traceLevelSystemOut);
traceSystem.setLevelSystemOut(level);
}
trace = traceSystem.getTrace(Trace.JDBC);
String serverList = null;
if (server.indexOf(',') >= 0) {
serverList = StringUtils.quoteStringSQL(server);
ci.setProperty("CLUSTER", Constants.CLUSTERING_ENABLED);
}
autoReconnect = Boolean.parseBoolean(ci.getProperty("AUTO_RECONNECT", "false"));
// AUTO_SERVER implies AUTO_RECONNECT
boolean autoServer = Boolean.parseBoolean(ci.getProperty("AUTO_SERVER", "false"));
if (autoServer && serverList != null) {
throw DbException.getUnsupportedException("autoServer && serverList != null");
}
autoReconnect |= autoServer;
if (autoReconnect) {
String className = ci.getProperty("DATABASE_EVENT_LISTENER");
if (className != null) {
className = StringUtils.trim(className, true, true, "'");
try {
eventListener = (DatabaseEventListener) JdbcUtils.loadUserClass(className).newInstance();
} catch (Throwable e) {
throw DbException.convert(e);
}
}
}
cipher = ci.getProperty("CIPHER");
if (cipher != null) {
fileEncryptionKey = MathUtils.secureRandomBytes(32);
}
String[] servers = StringUtils.arraySplit(server, ',', true);
int len = servers.length;
transferList.clear();
sessionId = StringUtils.convertBytesToHex(MathUtils.secureRandomBytes(32));
// TODO cluster: support more than 2 connections
boolean switchOffCluster = false;
try {
for (int i = 0; i < len; i++) {
String s = servers[i];
try {
Transfer trans = initTransfer(ci, databaseName, s);
transferList.add(trans);
} catch (IOException e) {
if (len == 1) {
throw DbException.get(ErrorCode.CONNECTION_BROKEN_1, e, e + ": " + s);
}
switchOffCluster = true;
}
}
checkClosed();
if (switchOffCluster) {
switchOffCluster();
}
checkClusterDisableAutoCommit(serverList);
} catch (DbException e) {
traceSystem.close();
throw e;
}
}