How to use host variable in Java?

Question

How do I use host variable in java? I am getting SQL code of -404 and description of SQL code is The UPDATE or INSERT statement specifies a String that is too long column-name SQLSTATE=22001. Below is my code:
* i n s e r t M e s s a g e
* insertMessage: This method will retrive detail message and other fields for
* selected item from screen1.
public final Collection insertMessage(String businessId,String messageNumber,String messageType,
String messageTitle,String printStyle,String statusIndicator,
String approverId,String lastUpdateId,String longMessage) {
MessageTransport msi = new MessageTransport();
PreparedStatement ps = null;
Connection connection = null;
MessageTransport msi1 = new MessageTransport();
PreparedStatement ps1 = null;
Connection connection1 = null;
ArrayList list = new ArrayList();
try {
if (businessId != null) {
businessId = businessId.trim();
if (messageNumber != null) {
messageNumber = messageNumber.trim();
if (messageType != null) {
messageType = messageType.trim();
if (messageTitle != null) {
messageTitle = messageTitle.trim();
if (printStyle != null) {
printStyle = printStyle.trim();
if (statusIndicator != null) {
statusIndicator = statusIndicator.trim();
if (approverId != null) {
approverId = approverId.trim();
if (lastUpdateId != null) {
lastUpdateId = lastUpdateId.trim();
if (longMessage != null) {
longMessage = longMessage.trim();
int len = longMessage.length();
if (len > 254) {
int constant = 254;
int k = len % constant; //k will hold value that has number of loops including initial insert.
k = k - 1; //this is for total number of loop.
int j = len / constant; //this will have remainder if any to insert rest of longmessage.
System.out.println("Display remainder: " + k);
System.out.println("Display divisible: " + j);
System.out.println("Display Length of longMessage: " + len);
StringBuffer sql = new StringBuffer();
sql.append("INSERT INTO " + MESSAGE_TBL + " ( MT_BUS_ID,MT_MSG_NBR,MT_MSG_TYPE,MT_MSG_TITLE,MT_PRINT_STYLE,MT_APV_STATUS,MT_APV_ID,MT_APV_DT,MT_APV_TM,MT_LAST_UPDATE_ID,MT_LAST_UPDATE_DT,MT_LAST_UPDATE_TM,MT_MSG_TXT ) VALUES ");
sql.append("(");
sql.append("'");
sql.append(businessId).append("'");
sql.append(",").append(messageNumber);
sql.append(",").append("'I'");
sql.append(",").append("'").append(messageTitle).append("'");
sql.append(",").append("'").append(printStyle).append("'");
sql.append(",").append("'P'");
sql.append(",").append("' '");
sql.append(",").append("CURRENT DATE");
sql.append(",").append("CURRENT TIME");
sql.append(",").append("'").append(lastUpdateId).append("'");
sql.append(",").append("CURRENT DATE");
sql.append(",").append("CURRENT TIME");
sql.append(",").append("'").append(longMessage).append("'");
sql.append(")");
System.out.println("Display SQL Statement: " + sql);
connection = DriverManager.getConnection(DATABASE_URI, USER, PASS);
ps = connection.prepareStatement(sql.toString());
ps.executeUpdate();
System.out.println("Refreshed Record: ");
catch (SQLException sqle) {
System.out.println("SQLException: "+ sqle + ". SQLSTATE=" + sqle.getSQLState()+" SQLCODE=" + sqle.getErrorCode());
finally {
if (ps != null) {
try {
ps.close();
ps=null;
catch (Exception e) {}
if (ps1 != null) {
try {
ps1.close();
ps1=null;
catch (Exception e) {}
if (connection != null) {
try {
connection.close();
connection = null;
catch (Exception e) {}
if (connection1 != null) {
try {
connection1.close();
connection1 = null;
catch (Exception e) {}
return list;
if my longMessage is smaller like one line then everything works fine, but as soon as my longMessage if greater than 254 it starts giving me -404. How do I work around or Is there any way to use host variable in Java?
All kind of help is appreciated. Any question then please email me at [email protected].
Thank you.

Answer 1

This is what you got to do to insert a larger value.
//Assuming that message length is less than 254+ 254 characters.
//If larger then run the update loop that many times.
String longMessage = "Blah blah ... ";
String firstPart = "";
String secondPart = "";
int messageLength = longMessage.length();
if (messageLength > 254)
     try
          firstPart = longMessage.subString(0, 253);
          secondPart = longMessage.subString(254, message);
     catch (IndexOutOfBoundsException e)
//In the first insert  set the first 254 characters
ps.setString(1, firstPart);
int result = ps.executeUpdate();
if (result != 0)
       System.out.println("Insert  sucessful  ");
       if (messageLength > 254)
            //now update with the second part.
            static String UPDATE_SECOND_PART = UPDATE my.table SET LONG_COL = LONG_COL || ? WHERE KEY_COL = ?;
            ps2 = connection.getPreparedStatement(UPDATE_SECOND_PART);
            ps2.setString(1, secondPart);
            ps2.setString(2, businessId);  //assuming that businessId is the primary key.
            int result2 = ps2.executeUpdate();
            if (result2 != 0)
                  System.out.println("Update  sucessful  ");
            else
                 System.out.println("Update failed ");
else
       System.out.println("Insert failed ");
}Hope this helps.