protected SQLException readError() throws SQLException {
SQLException ex = null;
int status = msg.readInt();
String sqlState = msg.readString(5);
byte type = msg.readByte();
String message = msg.readString();
switch (type) {
case MSG_ET_ERR:
if (trace.enabled(1))
trace.write(
tr_id
+ ": Received error '"
+ sqlState
+ "' 0x"
+ Integer.toHexString(status)
+ " -- "
+ message);
ex = SqlExFactory.get(message, sqlState, status);
break;
case MSG_ET_WRN:
if (trace.enabled(1))
trace.write(
tr_id
+ ": Received warning '"
+ sqlState
+ "' 0x"
+ Integer.toHexString(status)
+ " -- "
+ message);
setWarning(new SqlWarn(message, sqlState, status));
break;
case MSG_ET_MSG:
if (trace.enabled(3))
trace.write(
tr_id
+ ": Received message '"
+ sqlState
+ "' 0x"
+ Integer.toHexString(status)
+ " -- "
+ message);
setWarning(new SqlWarn(message, sqlState, status));
break;
case MSG_ET_XA:
if (trace.enabled(1)) trace.write(tr_id + ": Received XA error " + status);
ex = new XaEx(status);
break;
}
return (ex);
} // readError
protected JdbcRSMD readResults() throws SQLException, XaEx {
SQLException ex_list = null;
XaEx xa_list = null;
JdbcRSMD rsmd = null;
byte msg_id;
try {
msg_process_loop:
do {
switch (msg_id = msg.receive()) {
case MSG_DESC:
rsmd = readDesc();
break;
case MSG_DATA:
if (readData()) break msg_process_loop; // interrupt
break;
case MSG_INFO:
readInfo();
break;
case MSG_ERROR:
SQLException ex = readError();
if (ex != null)
if (ex instanceof XaEx) xa_list = (XaEx) ex; /* Save only last error */
else if (ex_list == null) ex_list = ex;
else ex_list.setNextException(ex);
break;
case MSG_RESULT:
if (readResult()) break msg_process_loop; // interrupt
break;
default:
if (trace.enabled(1)) trace.write(tr_id + ": Invalid message ID " + msg_id);
throw SqlExFactory.get(ERR_GC4002_PROTOCOL_ERR);
}
if (msg.moreData()) {
if (trace.enabled(1)) trace.write(tr_id + ": end-of-message not reached");
throw SqlExFactory.get(ERR_GC4002_PROTOCOL_ERR);
}
} while (msg.moreMessages());
} catch (SQLException ex) {
if (ex_list == null) ex_list = ex;
else ex_list.setNextException(ex);
}
if (xa_list != null) throw xa_list;
if (ex_list != null) throw ex_list;
return (rsmd);
} // readResults
protected void writeQueryText(String text) throws SQLException {
byte ba[];
try {
ba = msg.getCharSet().getBytes(text);
} catch (Exception ex) {
throw SqlExFactory.get(ERR_GC401E_CHAR_ENCODE);
} // Should not happen!
for (int offset = 0; offset < ba.length; ) {
int length = Math.min(ba.length - offset, 32000);
msg.write(MSG_QP_QTXT);
msg.write((short) length);
msg.write(ba, offset, length);
offset += length;
}
return;
}
protected void readInfo() throws SQLException {
while (msg.moreData()) {
short param_id = msg.readShort();
short param_len = msg.readShort();
switch (param_id) {
case MSG_IP_TRACE:
{
if (trace.enabled() || conn.dbms_log.enabled()) {
String txt = msg.readString(param_len);
trace.log("DBMS TRACE: " + txt);
conn.dbms_log.write(txt);
} else msg.skip(param_len);
break;
}
default:
if (trace.enabled(1)) trace.write(tr_id + ": Invalid info param ID " + param_id);
throw SqlExFactory.get(ERR_GC4002_PROTOCOL_ERR);
}
}
return;
} // readInfo
protected boolean readResult() throws SQLException {
while (msg.moreData()) {
short param_id = msg.readShort();
short param_len = msg.readShort();
switch (param_id) {
case MSG_RP_ROWCOUNT:
switch (param_len) {
case 1:
rslt_val_rowcnt = msg.readByte();
break;
case 2:
rslt_val_rowcnt = msg.readShort();
break;
case 4:
rslt_val_rowcnt = msg.readInt();
break;
default:
if (trace.enabled(1)) trace.write(tr_id + ": Invalid row count length: " + param_len);
throw SqlExFactory.get(ERR_GC4002_PROTOCOL_ERR);
}
rslt_items |= RSLT_ROW_CNT;
break;
case MSG_RP_XACT_END:
if (param_len > 0) {
if (trace.enabled(1)) trace.write(tr_id + ": Invalid XACT param length: " + param_len);
throw SqlExFactory.get(ERR_GC4002_PROTOCOL_ERR);
}
rslt_flags |= MSG_RF_XACT_END;
conn.endXact();
break;
case MSG_RP_STMT_ID:
if (param_len != 8) {
if (trace.enabled(1)) trace.write(tr_id + ": Invalid stmt ID length: " + param_len);
throw SqlExFactory.get(ERR_GC4002_PROTOCOL_ERR);
}
rslt_val_stmt = (((long) msg.readInt()) << 32) | (((long) msg.readInt()) & 0xffffffff);
rslt_items |= RSLT_STMT_ID;
break;
case MSG_RP_FETCH_LIMIT:
switch (param_len) {
case 1:
rslt_val_fetch = msg.readByte();
break;
case 2:
rslt_val_fetch = msg.readShort();
break;
case 4:
rslt_val_fetch = msg.readInt();
break;
default:
if (trace.enabled(1))
trace.write(tr_id + ": Invalid fetch limit length: " + param_len);
throw SqlExFactory.get(ERR_GC4002_PROTOCOL_ERR);
}
rslt_items |= RSLT_PREFETCH;
break;
case MSG_RP_EOD:
if (param_len != 0) {
trace.write(tr_id + ": Invalid EOD length: " + param_len);
throw SqlExFactory.get(ERR_GC4002_PROTOCOL_ERR);
}
rslt_flags |= MSG_RF_EOD;
break;
case MSG_RP_PROC_RESULT:
switch (param_len) {
case 1:
setProcResult((int) msg.readByte());
break;
case 2:
setProcResult((int) msg.readShort());
break;
case 4:
setProcResult(msg.readInt());
break;
default:
if (trace.enabled(1))
trace.write(tr_id + ": Invalid proc result length: " + param_len);
throw SqlExFactory.get(ERR_GC4002_PROTOCOL_ERR);
}
break;
case MSG_RP_READ_ONLY:
if (param_len != 0) {
trace.write(tr_id + ": Invalid READ_ONLY length: " + param_len);
throw SqlExFactory.get(ERR_GC4002_PROTOCOL_ERR);
}
rslt_flags |= MSG_RF_READ_ONLY;
break;
case MSG_RP_TBLKEY:
if (param_len != MSG_RPV_TBLKEY_LEN) {
if (trace.enabled(1)) trace.write(tr_id + ": Invalid table key length: " + param_len);
throw SqlExFactory.get(ERR_GC4002_PROTOCOL_ERR);
}
if (rslt_val_tblkey == null) rslt_val_tblkey = new byte[param_len];
msg.readBytes(rslt_val_tblkey, 0, param_len);
rslt_items |= RSLT_TBLKEY;
break;
case MSG_RP_OBJKEY:
if (param_len != MSG_RPV_OBJKEY_LEN) {
if (trace.enabled(1)) trace.write(tr_id + ": Invalid object key length: " + param_len);
throw SqlExFactory.get(ERR_GC4002_PROTOCOL_ERR);
}
if (rslt_val_objkey == null) rslt_val_objkey = new byte[param_len];
msg.readBytes(rslt_val_objkey, 0, param_len);
rslt_items |= RSLT_OBJKEY;
break;
case MSG_RP_FLAGS:
{
int flags;
switch (param_len) {
case 1:
flags = (int) msg.readByte();
break;
case 2:
flags = (int) msg.readShort();
break;
case 4:
flags = msg.readInt();
break;
default:
if (trace.enabled(1))
trace.write(tr_id + ": Invalid result flags length: " + param_len);
throw SqlExFactory.get(ERR_GC4002_PROTOCOL_ERR);
}
rslt_flags |= flags;
if ((flags & MSG_RF_XACT_END) != 0) conn.endXact();
break;
}
case MSG_RP_ROW_STATUS:
switch (param_len) {
case 1:
rslt_val_rowstat = msg.readByte();
break;
case 2:
rslt_val_rowstat = msg.readShort();
break;
case 4:
rslt_val_rowstat = msg.readInt();
break;
default:
if (trace.enabled(1))
trace.write(tr_id + ": Invalid row status length: " + param_len);
throw SqlExFactory.get(ERR_GC4002_PROTOCOL_ERR);
}
rslt_items |= RSLT_ROW_STAT;
break;
case MSG_RP_ROW_POS:
switch (param_len) {
case 1:
rslt_val_rowpos = msg.readByte();
break;
case 2:
rslt_val_rowpos = msg.readShort();
break;
case 4:
rslt_val_rowpos = msg.readInt();
break;
default:
if (trace.enabled(1))
trace.write(tr_id + ": Invalid row position length: " + param_len);
throw SqlExFactory.get(ERR_GC4002_PROTOCOL_ERR);
}
rslt_items |= RSLT_ROW_POS;
break;
default:
if (trace.enabled(1)) trace.write(tr_id + ": Invalid result param ID " + param_id);
throw SqlExFactory.get(ERR_GC4002_PROTOCOL_ERR);
}
}
return (false);
} // readResult