cubrid.jdbc.jci.UInputBuffer Maven / Gradle / Ivy
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* Copyright (C) 2008 Search Solution Corporation. All rights reserved by Search Solution.
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/**
* Title: CUBRID Java Client Interface
* Description: CUBRID Java Client Interface
* @version 2.0
*/
package cubrid.jdbc.jci;
import java.io.IOException;
import java.sql.Date;
import java.sql.Time;
import java.util.Calendar;
import cubrid.jdbc.driver.CUBRIDBlob;
import cubrid.jdbc.driver.CUBRIDClob;
import cubrid.jdbc.driver.CUBRIDConnection;
import cubrid.jdbc.driver.CUBRIDXid;
import cubrid.sql.CUBRIDOID;
import cubrid.sql.CUBRIDTimestamp;
class UInputBuffer {
private UTimedDataInputStream input;
private int position;
private int capacity;
private byte casinfo[];
private byte buffer[];
private int resCode;
private final static int CAS_INFO_SIZE = 4;
private UConnection uconn;
UInputBuffer(UTimedDataInputStream relatedI, UConnection con)
throws IOException, UJciException {
input = relatedI;
position = 0;
uconn = con;
int readLen = 0;
int totalReadLen = 0;
byte[] headerData = new byte[8];
while (totalReadLen < 8) {
readLen = input.read(headerData, totalReadLen, 8 - totalReadLen);
if (readLen == -1) {
throw uconn.createJciException(UErrorCode.ER_ILLEGAL_DATA_SIZE);
}
totalReadLen = totalReadLen + readLen;
}
capacity = UJCIUtil.bytes2int(headerData, 0);
casinfo = new byte[CAS_INFO_SIZE];
System.arraycopy(headerData, 4, casinfo, 0, 4);
con.setCASInfo(casinfo);
if (capacity <= 0) {
resCode = 0;
capacity = 0;
return;
}
buffer = new byte[capacity];
readData();
resCode = readInt();
if (resCode < 0) {
int eCode = readInt();
String msg;
if (con.isRenewedSessionId()) {
byte[] newSessionId = new byte[20];
msg = readString(remainedCapacity() - newSessionId.length,
UJCIManager.sysCharsetName);
readBytes(newSessionId);
con.setNewSessionId (newSessionId);
} else {
msg = readString(remainedCapacity(),
UJCIManager.sysCharsetName);
}
eCode = convertErrorByVersion(resCode, eCode);
throw uconn.createJciException(UErrorCode.ER_DBMS, resCode, eCode, msg);
}
}
int convertErrorByVersion(int indicator, int error) {
if (!uconn.protoVersionIsSame(UConnection.PROTOCOL_V2)
&& !uconn.brokerInfoRenewedErrorCode()) {
if (indicator == UErrorCode.CAS_ERROR_INDICATOR
|| error == UErrorCode.CAS_ER_NOT_AUTHORIZED_CLIENT) {
// old error converts to new error
return error - 9000;
}
}
return error;
}
byte[] getCasInfo() {
return casinfo;
}
int getResCode() {
return resCode;
}
byte readByte() throws UJciException {
if (position >= capacity) {
throw uconn.createJciException(UErrorCode.ER_ILLEGAL_DATA_SIZE);
}
return buffer[position++];
}
void readBytes(byte value[], int offset, int len) throws UJciException {
if (value == null)
return;
if (position + len > capacity) {
throw uconn.createJciException(UErrorCode.ER_ILLEGAL_DATA_SIZE);
}
System.arraycopy(buffer, position, value, offset, len);
position += len;
}
void readBytes(byte value[]) throws UJciException {
readBytes(value, 0, value.length);
}
byte[] readBytes(int size) throws UJciException {
byte[] value = new byte[size];
readBytes(value, 0, size);
return value;
}
double readDouble() throws UJciException {
return Double.longBitsToDouble(readLong());
}
float readFloat() throws UJciException {
return Float.intBitsToFloat(readInt());
}
int readInt() throws UJciException {
if (position + 4 > capacity) {
throw uconn.createJciException(UErrorCode.ER_ILLEGAL_DATA_SIZE);
}
int data = UJCIUtil.bytes2int(buffer, position);
position += 4;
return data;
}
long readLong() throws UJciException {
long data = 0;
if (position + 8 > capacity) {
throw uconn.createJciException(UErrorCode.ER_ILLEGAL_DATA_SIZE);
}
for (int i = 0; i < 8; i++) {
data <<= 8;
data |= (buffer[position++] & 0xff);
}
return data;
}
short readShort() throws UJciException {
if (position + 2 > capacity) {
throw uconn.createJciException(UErrorCode.ER_ILLEGAL_DATA_SIZE);
}
short data = UJCIUtil.bytes2short(buffer, position);
position += 2;
return data;
}
String readString(int size, String charsetName) throws UJciException {
String stringData;
if (size <= 0)
return null;
if (position + size > capacity) {
throw uconn.createJciException(UErrorCode.ER_ILLEGAL_DATA_SIZE);
}
try {
stringData = new String(buffer, position, size - 1, charsetName);
} catch (java.io.UnsupportedEncodingException e) {
stringData = new String(buffer, position, size - 1);
}
position += size;
return stringData;
}
Date readDate() throws UJciException {
int year, month, day;
year = readShort();
month = readShort();
day = readShort();
if (year == 0 && month == 0 && day == 0) {
if (uconn.getZeroDateTimeBehavior().equals(
UConnection.ZERO_DATETIME_BEHAVIOR_EXCEPTION)) {
throw new UJciException(UErrorCode.ER_ILLEGAL_TIMESTAMP);
} else if (uconn.getZeroDateTimeBehavior().equals(
UConnection.ZERO_DATETIME_BEHAVIOR_CONVERT_TO_NULL)) {
return null;
}
}
Calendar cal = Calendar.getInstance();
if (year == 0 && month == 0 && day == 0) {
cal.set(0, 0, 1, 0, 0, 0); /* round to 0001-01-01 00:00:00) */
} else {
cal.set(year, month - 1, day, 0, 0, 0);
}
cal.set(Calendar.MILLISECOND, 0);
return new Date(cal.getTimeInMillis());
}
Time readTime() throws UJciException {
int hour, minute, second;
hour = readShort();
minute = readShort();
second = readShort();
Calendar cal = Calendar.getInstance();
cal.set(1970, 0, 1, hour, minute, second);
cal.set(Calendar.MILLISECOND, 0);
return new Time(cal.getTimeInMillis());
}
CUBRIDTimestamp readTimestamp() throws UJciException {
int year, month, day, hour, minute, second;
year = readShort();
month = readShort();
day = readShort();
hour = readShort();
minute = readShort();
second = readShort();
if (year == 0 && month == 0 && day == 0) {
if (uconn.getZeroDateTimeBehavior().equals(
UConnection.ZERO_DATETIME_BEHAVIOR_EXCEPTION)) {
throw new UJciException(UErrorCode.ER_ILLEGAL_TIMESTAMP);
} else if (uconn.getZeroDateTimeBehavior().equals(
UConnection.ZERO_DATETIME_BEHAVIOR_CONVERT_TO_NULL)) {
return null;
}
}
Calendar cal = Calendar.getInstance();
if (year == 0 && month == 0 && day == 0) {
cal.setTimeInMillis(0); /* round to 1970-01-01 00:00:00 UTC */
} else {
cal.set(year, month - 1, day, hour, minute, second);
}
cal.set(Calendar.MILLISECOND, 0);
return new CUBRIDTimestamp(cal.getTimeInMillis(),
CUBRIDTimestamp.TIMESTAMP);
}
CUBRIDTimestamp readDatetime() throws UJciException {
int year, month, day, hour, minute, second, millisecond;
year = readShort();
month = readShort();
day = readShort();
hour = readShort();
minute = readShort();
second = readShort();
millisecond = readShort();
if (year == 0 && month == 0 && day == 0) {
if (uconn.getZeroDateTimeBehavior().equals(
UConnection.ZERO_DATETIME_BEHAVIOR_EXCEPTION)) {
throw new UJciException(UErrorCode.ER_ILLEGAL_TIMESTAMP);
} else if (uconn.getZeroDateTimeBehavior().equals(
UConnection.ZERO_DATETIME_BEHAVIOR_CONVERT_TO_NULL)) {
return null;
}
}
Calendar cal = Calendar.getInstance();
if (year == 0 && month == 0 && day == 0) {
cal.set(0, 0, 1, 0, 0, 0); /* round to 0001-01-01 00:00:00) */
} else {
cal.set(year, month - 1, day, hour, minute, second);
}
cal.set(Calendar.MILLISECOND, millisecond);
return new CUBRIDTimestamp(cal.getTimeInMillis(),
CUBRIDTimestamp.DATETIME);
}
CUBRIDOID readOID(CUBRIDConnection con) throws UJciException {
byte[] oid = readBytes(UConnection.OID_BYTE_SIZE);
for (int i = 0; i < oid.length; i++) {
if (oid[i] != (byte) 0) {
return (new CUBRIDOID(con, oid));
}
}
return null;
}
CUBRIDBlob readBlob(int packedLobHandleSize, CUBRIDConnection conn)
throws UJciException {
try {
byte[] packedLobHandle = readBytes(packedLobHandleSize);
return new CUBRIDBlob(conn, packedLobHandle);
} catch (Exception e) {
throw uconn.createJciException(UErrorCode.ER_UNKNOWN);
}
}
CUBRIDClob readClob(int packedLobHandleSize, CUBRIDConnection conn)
throws UJciException {
try {
byte[] packedLobHandle = readBytes(packedLobHandleSize);
return new CUBRIDClob(conn, packedLobHandle, conn.getUConnection()
.getCharset());
} catch (Exception e) {
throw uconn.createJciException(UErrorCode.ER_UNKNOWN);
}
}
int remainedCapacity() {
return capacity - position;
}
CUBRIDXid readXid() throws UJciException {
readInt(); // msg_size
int formatId = readInt();
int gid_size = readInt();
int bid_size = readInt();
byte[] gid = readBytes(gid_size);
byte[] bid = readBytes(bid_size);
return (new CUBRIDXid(formatId, gid, bid));
}
private void readData() throws IOException {
int realRead = 0, tempRead = 0;
while (realRead < capacity) {
tempRead = input.read(buffer, realRead, capacity - realRead);
if (tempRead < 0) {
capacity = realRead;
break;
}
realRead += tempRead;
}
}
}