UUID vs Int as a bdb key

Dear All,
We are having to maintain a lookup table mapping int<>UUID as the objects we are storing are keyed on UUID but the BDB has been designed using an int as the key.
This strikes me as overly complex etc. & as such I was wondering what the performance implications of using UUID instead of Int would be within a BDB.
TIA
Adam

The UUID key will be longer than the int key, of course, and longer keys take more JE cache memory. However, it is likely that this will be offset by the memory savings of removing your UUID-to-int mapping table. So if you change the JE key to UUID, you may want to increase the JE cache size. In general, you should size your JE cache by using DbCacheSize as described in the FAQ.
--mark

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Mapping a key string to the KeyEvent int value

/** Returns the int value of a key
* @param the String representing the key. example "SHIFT" for the shift key
* @return KeyEvent.VK_keyName
public static int mapKeyCode(String keyName) {
// we don't have access to an instance of KeyEvent!!!
Class.forName("java.awt.event.KeyEvent").getDeclaredField("VK_"+keyName).getInt(obj..@#@#@
//+ exception handling
}

public int keyTyped( KeyEvent event ) {
try {
     return java.lang.Integer( String.valueOf( event.getKeyChar() ) );
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HashMap , int [][] - key , compareTo override problem , help

i've a hashmap Map<int [][] , Integer> and i want to get the corresponding value for int a[][] from the map.
if i use , map.containsKey(a)
it doesn't compare as required( it doesn't consider order )
so i thought of using class key implementing comparable like this,
class key implements Comparable
          int a[][];
          public key(int p[][])
          {     a=p;     }
          public int compareTo(Object o)
                        key k = (key)o;
               for(int i = 0 ; i < 3 ; i++)
                    for(int j = 0 ;j < 3 ; j++)
                         if(a[i][j]!=k.a[i][j])     return 1;
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}now when i create a key ,
key KK = new key(a) // a is int[][]
map.containsKey(KK) doesn't invoke compareTo method itself ..
don't what the problem is.
but when i try . TreeMap it invokes compareTo method
but don't know why , it acts as before when Map<int [][] , Integer> was used.. any idea
Thanx

manishmulani@nitk wrote:
wil the following way of overriding hashcode work??
class key
          int a[][];
          public key(int p[][])
          {     a=p;     }
          public boolean equals(Object o)
               key k = (key)o;
               for(int i = 0 ; i < 3 ; i++)
                    for(int j = 0 ; j < 3 ; j++)
                         if(a[i][j]!=k.a[i][j])     return false;
               return true;
          public int hashCode()
               return a.hashCode();
NO! When doing that, you will get undesirable results. Execute the following lines of code and examine the output:
System.out.println(new int[][]{{1,2},{3,4}}.hashCode());
System.out.println(new int[][]{{1,2},{3,4}}.hashCode());This is better:
public int hashCode() {
int hash = 1, mutliplier = 1;
for(int[] row: array) {
    for(int val: row) {
      hash ^= (val * mutliplier);
      mutliplier *= 10;
return hash;
}(Untested!!!)
ok this will be same if i use TreeMap and implement Comparable<key> and override compareTo() right??Err, yes, more or less. Of course, a HashMap and TreeMap are not the same.

Is there a way to detect two keys at the same time?

Is there a way to detect the keys if the user is holding two keys down at the same time?

yes, but you'll have to check outside of the event loop (i.e. don't check for it in the keyPressed method).
just use an array of keys that keeps track of which keys are currently down and which are up. you could use a boolean array but I use an int array because... Im not sure I've just done it probably because of my C background. anyway, basic setup:
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
public class MultiKey extends JFrame {
     int keys[];
     public MultiKey() {
          super();
          keys = new int[256];
          Arrays.fill(keys,0); // 0 = key is up
          enableEvents(AWTEvent.KEY_EVENT_MASK);
          show();
     public void processKeyEvent(KeyEvent e) {
          // the 0xff below binds the key code to below 256
          int key = (e.getKeyCode()&0xff);
          if (e.getID() == KeyEvent.KEY_PRESSED) {
               keys[key] = 1; // 1 = key is down
          else if (e.getID() == KeyEvent.KEY_RELEASED) {
               keys[key] = 0; // 0 = key is up
     protected boolean isKeyDown(int key) {
          return (keys[key] != 0);
     protected boolean isKeyUp(int key) {
          return (keys[key] == 0);
}so now at any time in your code you can check key state by using the isKeyUp and isKeyDown methods. this is about as close as you get to input polling in java unless you use LWJGL or something similiar ;)
you can try out a full executable example at my site here - just open up the jar and start holding keys down :)

How to get the value in a hashmap with a key of expression "123-456"?

Hi all,
I new to java and having a problem with getting values from a hashmap.here is the code which i wrote
Map map = new HashMap();
int m = 123;
int n = 456;
String key = String.valueOf(m) + "-" + String.valueOf(n);
    map.put(key, true);
    Now i am trying to get the value and i get an exception
boolean b = map.get(String.valueOf(m) + "-" + String.valueOf(n));Can someone help me how to pass this expression as key in the hashamp

Hi corlettk,
Thanks for your reply. I have defined my map as Map<String, Boolean> selectedIds = new HashMap<String, Boolean>();
            selectedIds.put("123-456", true);
            int m=123; int n=456;
                                 selectedIds.put(String.valueOf(m) + "-" + String.valueOf(n),true);
            boolean viv = selectedIds.get("String.valueOf(m)-String.valueOf(n)");
            System.out.println(viv);
            My problem is the hashmap key must be set dynamically ("123-456" is just an example) and when i get the value i should be able to pass those varibales in an expression correctly. Please let me know how can i pass an expression like the one above as a hashmap key. Please advise.

Syndicator - Remote Key

I'm trying to map some Remote Keys at the Syndicator, but i'm having the following problem:
The key mapping values from source do not transfer any value to destination. My Remote System is the "MDC R/3 & ERP", but I have tried to configure the "Output Remote System" property as "MDC R/3 & ERP" and I have inserted the remote key values in flat tables (lookup).
What need I to do to get the key mapping values in Syndicator?
Evandro.

Hi Evandro,
The key mapping values from source do not transfer any value to destination. My Remote System is the "MDC R/3 & ERP", but I have tried to configure the "Output Remote System" property as "MDC R/3 & ERP" and I have inserted the remote key values in flat tables (lookup).
To syndicate out remote Key form Remote system in MDM syndiactor you need to take care of the following:
- Enable the Key mapping as Yes in MDM Console.
- While Importing data either for the main table records or the Lookup table records make sure to map the Unique key field from the source side to the <Remote key> in the destination in MDM Import manager.
- In the syndicator you need to take care of two imp things
- Firstly while opening the syndicator you need to select the Remote system in the destination properties(File>New)
- This will make sure that you are sending the key mappings to that remote system.Output remote system property works slightly differnt.
- You need to make sure that the first property in MDM syndicator under the map property tab(remote system) is having your Remote system name.
- Then you need to map the the value field(under remote key in the source) to the destination field for remote key.
You will understand better in the below related links:
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/7051c376-f939-2b10-7da1-c4f8f9eecc8c (Key mapping)
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/30843106-5539-2b10-75a9-da483911b0d9 (Key mapping)
Hope It Helped
Thanks & Regards
Simona Pinto

Session key and MAC generation in SCP '02' i='15'

Hi,
I am trying send a PUT KEY command and it resolves to '6982' after a '9000' EXTERNAL AUTHENTICATE.
I suspect that my encryption is causing the problem.(not really sure!)
I compare my session keys to some that ppl had derived and posted on the forum and I don't really get what they did.
I am trying to find out if I'm deriving the correct session keys or not?!?!
e.g
//Calculating session keys with
//static key = '404142434445464748494a4b4c4d4e4f' (keyData)
//sequence counter = '003b'
//"0101" + sequenceCounter + "000000000000000000000000" for session CMAC key (data)
//"0102" + sequenceCounter + "000000000000000000000000" for session RMAC key (data)
//"0181" + sequenceCounter + "000000000000000000000000" for session DEK key (data)
//"0182" + sequenceCounter + "000000000000000000000000" for session ENC key (data)
//sessionCMAC is :3213860da8f8d9796794cbcec43ef7a23213860da8f8d979: with sequence counter:003b (result)
//sessionRMAC is :042a687f6e0dd3f80eabf1e5d51ccefe042a687f6e0dd3f8: with sequence counter:003b (result)
//sessionDEK is :1fe31370c22354e3b90d6b8ad5686d371fe31370c22354e3: with sequence counter:003b (result)
//sessionENC is :94a47ad54ffbf423fe4a9d915befab5294a47ad54ffbf423: with sequence counter:003b (result)
<code>
if (keyData.length == 16) {
byte[] temp = (byte[]) keyData.clone();
keyData = new byte[24];
System.arraycopy(temp, 0, keyData, 0, temp.length);
System.arraycopy(temp, 0, keyData, 16, 8);
DESedeKeySpec keySpec = new DESedeKeySpec(keyData);
SecretKeyFactory secretKeyFactory = SecretKeyFactory.getInstance("DESede");
SecretKey key = secretKeyFactory.generateSecret(keySpec);
IvParameterSpec iv = new IvParameterSpec(new byte[]{0, 0, 0, 0, 0, 0, 0, 0});
Cipher desedeCBCCipher = Cipher.getInstance("DESede/CBC/NoPadding");
desedeCBCCipher.init(Cipher.ENCRYPT_MODE, key, iv);
byte[] result = desedeCBCCipher.doFinal(data);
if (result .length == 16) {
byte[] temp = (byte[]) result .clone();
result = new byte[24];
System.arraycopy(temp, 0, result , 0, temp.length);
System.arraycopy(temp, 0, result , 16, 8);
keySpec = new DESedeKeySpec(result);
secretKeyFactory = SecretKeyFactory.getInstance("DESede");
key = secretKeyFactory.generateSecret(keySpec);
</code>
I use the same encrytion to derive KeyCheckValue with
newKey ='505152535455565758595a5b5c5d5e5f', data = '0000000000000000'
and it results to : '6d377e' (of course the last 3 bytes)
Even though my CMAC session key is different from others (e.g "RLopes" in "http://192.9.162.102/thread.jspa?threadID=5365173&tstart=363" and I have seen it in others too and its really odd to me that its slightly different if you take a close look you will get what i mean) i get the EXTERNAL AUTHENTICATION to work.
If there is anyone who is 100% sure meaning he/she got other commands to work after EXTERNAL AUTHENTICATE using CMAC please help me verify the keys I got?
Can he/she test with his code to see if he/she is getting the same session keys or check value?
Thanks in advance
Kamran

Hi,
Here is the Class and thanks for the tip, I've honestly tried these <code></code> but didn't work and I know it is indeed annoying without the tags :D
I really hope it helps...
* To change this template, choose Tools | Templates
* and open the template in the editor.
package terminalpcsc;
import java.lang.Exception;
import java.security.GeneralSecurityException;
import java.security.Key;
import java.security.SecureRandom;
import java.util.List;
import javax.crypto.*;
import javax.crypto.spec.*;
import javax.security.sasl.AuthenticationException;
import javax.smartcardio.*;
* @author Kamran
* @param args the command line arguments
public class Main {
    private static CardChannel channel;
    private static Card card;
    private static int CHALLENGE_LENGTH = 8;
    private static byte[] keyDiversification = new byte[10];
    private static byte[] keyInformation = new byte[2];
    private static byte[] sequenceCounter = new byte[2];
    private static byte[] cardChallenge = new byte[6];
    private static byte[] cardCryptogram = new byte[8];
    private static byte[] hostChallenge = new byte[8];
    private static byte[] hostCryptogram = new byte[8];
    private static String keyDiversificationHexString;
    private static String keyInformationHexString;
    private static String sequenceCounterHexString;
    private static String cardChallengeHexString;
    private static String cardCryptogramHexString;
    private static String hostChallengeHexString;
    private static String hostCryptogramHexString;
    private static byte[] sessionCMAC;
    private static byte[] sessionDEK;
    private static byte[] sessionENC;
    private static byte[] sessionRMAC;
    private static byte[] icvNextCommand;
    private static IvParameterSpec ivAllZeros = new IvParameterSpec(new byte[]{0, 0, 0, 0, 0, 0, 0, 0});
    private static byte[] staticKey = hexStringToByteArray("404142434445464748494a4b4c4d4e4f4041424344454647");
    private static byte[] newKey = hexStringToByteArray("505152535455565758595a5b5c5d5e5f");
    private static byte[] CMAC;
     * @param args the command line arguments
    public static void main(String[] args) throws Exception {
        initiateCardChannel();
        String apduString = generateSelectAPDU("a000000003535041");
        byte[] bufferC = hexStringToByteArray(apduString);
        CommandAPDU capdu = new CommandAPDU(bufferC);
        System.out.println("Sending APDU Select AID: " + byteArrayToHexString(bufferC));
        ResponseAPDU rapdu = channel.transmit(capdu);
        System.out.println("Sending Apdu: Done!");
        System.out.println("Waiting For Response...");
        byte[] bufferR = rapdu.getData();
        String responseData = byteArrayToHexString(rapdu.getBytes());
        System.out.println("Response: " + responseData);
        apduString = generateInitializeUpdateAPDU();
        bufferC = hexStringToByteArray(apduString);
        capdu = new CommandAPDU(bufferC);
        System.out.println("Sending APDU Initialize Update: " + byteArrayToHexString(bufferC));
        rapdu = channel.transmit(capdu);
        System.out.println("Sending Apdu: Done!");
        System.out.println("Waiting For Response...");
        bufferR = rapdu.getData();
        responseData = byteArrayToHexString(rapdu.getBytes());
        System.out.println("Response: " + responseData);
        // protocol 01
        //System.arraycopy(bufferR,0,keyDiversification,0,10);
        //System.arraycopy(bufferR,10,keyInformation,0,2);
        //System.arraycopy(bufferR,12,cardChallenge,0,8);
        //System.arraycopy(bufferR,20,cardCryptogram,0,8);
        // protocol 02
        System.arraycopy(bufferR, 0, keyDiversification, 0, 10);
        System.arraycopy(bufferR, 10, keyInformation, 0, 2);
        System.arraycopy(bufferR, 12, sequenceCounter, 0, 2);
        System.arraycopy(bufferR, 14, cardChallenge, 0, 6);
        System.arraycopy(bufferR, 20, cardCryptogram, 0, 8);
        keyDiversificationHexString = byteArrayToHexString(keyDiversification);
        keyInformationHexString = byteArrayToHexString(keyInformation);
        sequenceCounterHexString = byteArrayToHexString(sequenceCounter);
        cardChallengeHexString = byteArrayToHexString(cardChallenge);
        cardCryptogramHexString = byteArrayToHexString(cardCryptogram);
        System.out.println("keyDiversification: " + keyDiversificationHexString);
        System.out.println("keyInformation: " + keyInformationHexString);
        System.out.println("sequenceCounter: " + sequenceCounterHexString);
        System.out.println("cardChallenge: " + cardChallengeHexString);
        System.out.println("cardCryptogram: " + cardCryptogramHexString);
        System.out.println("Calculating Session Keys... encryption with CBC");
        //E.4.1 GP 2.1.1
        sessionCMAC = deriveEncryptionCBC(staticKey, hexStringToByteArray("0101" + sequenceCounterHexString + "000000000000000000000000"));
        System.out.println("sessionCMAC is :" + byteArrayToHexString(sessionCMAC) + ": with sequence counter:" + sequenceCounterHexString);
        sessionRMAC = deriveEncryptionCBC(staticKey, hexStringToByteArray("0102" + sequenceCounterHexString + "000000000000000000000000"));
        System.out.println("sessionRMAC is :" + byteArrayToHexString(sessionRMAC) + ": with sequence counter:" + sequenceCounterHexString);
        sessionDEK = deriveEncryptionCBC(staticKey, hexStringToByteArray("0181" + sequenceCounterHexString + "000000000000000000000000"));
        System.out.println("sessionDEK is :" + byteArrayToHexString(sessionDEK) + ": with sequence counter:" + sequenceCounterHexString);
        sessionENC = deriveEncryptionCBC(staticKey, hexStringToByteArray("0182" + sequenceCounterHexString + "000000000000000000000000"));
        System.out.println("sessionENC is :" + byteArrayToHexString(sessionENC) + ": with sequence counter:" + sequenceCounterHexString);
        System.out.println("Calculating and Verifying Card Cryptogram...");
        byte[] signature = cbcMACSignature(hexStringToByteArray(hostChallengeHexString + sequenceCounterHexString + cardChallengeHexString + "8000000000000000"), sessionENC);
        String signatureHexString = byteArrayToHexString(signature);
        if (signatureHexString.equalsIgnoreCase(cardCryptogramHexString)) {
            System.out.println("signature is :" + signatureHexString + "\ncardCryptogram is :" + cardCryptogramHexString + " \nCard cryptogram authenticated");
            apduString = generateExternalAuthenticateAPDU();
            bufferC = hexStringToByteArray(apduString);
            capdu = new CommandAPDU(bufferC);
            System.out.println("Sending APDU External Authenticate: " + byteArrayToHexString(bufferC));
            rapdu = channel.transmit(capdu);
            System.out.println("Sending Apdu: Done!");
            System.out.println("Waiting For Response...");
            bufferR = rapdu.getData();
            responseData = byteArrayToHexString(rapdu.getBytes());
            System.out.println("Response: " + responseData);
            apduString = generatePutKeyAPDU();
            bufferC = hexStringToByteArray(apduString);
            capdu = new CommandAPDU(bufferC);
            System.out.println("Sending APDU Put Key: " + byteArrayToHexString(bufferC));
            rapdu = channel.transmit(capdu);
            System.out.println("Sending Apdu: Done!");
            System.out.println("Waiting For Response...");
            bufferR = rapdu.getData();
            responseData = byteArrayToHexString(rapdu.getBytes());
            System.out.println("Response: " + responseData);
        } else {
            System.out.println("signature is :" + signatureHexString + "\ncardCryptogram is :" + cardCryptogramHexString + " \nCard cryptogram is not authenticated");
        releaseCardChannel();
    public static byte[] cbcMACSignature(byte[] data, byte[] sessionSENC) throws AuthenticationException {
        IvParameterSpec params =
                new IvParameterSpec(new byte[]{0, 0, 0, 0, 0, 0, 0, 0});
        if (sessionSENC.length == 16) {
            byte[] temp = (byte[]) sessionSENC.clone();
            sessionSENC = new byte[24];
            System.arraycopy(temp, 0, sessionSENC, 0, temp.length);
            System.arraycopy(temp, 0, sessionSENC, 16, 8);
        byte[] temp = null;
        SecretKey secretKey = new SecretKeySpec(sessionSENC, "DESede");
        try {
            Cipher cbcDES = Cipher.getInstance("DESede/CBC/NoPadding");
            cbcDES.init(Cipher.ENCRYPT_MODE, secretKey, params);
            temp = cbcDES.doFinal(data);
        } catch (GeneralSecurityException e) {
            e.printStackTrace();
        byte[] signature = new byte[8];
        System.arraycopy(temp, temp.length - 8, signature, 0, signature.length);
        return signature;
    // generateInitialUpdateAPDU()
    //CLA '80'
    //INS '50' INITIALIZE UPDATE
    //P1 'xx' Key Version Number
    //P2 '00' Reference control parameter P2
    //Lc '08' Length of host challenge
    //Data 'xx xx…' Host challenge
    //Le '00'
    //RESPONSE TEMPLATE
    //Key diversification data 10 bytes
    //Key information 2 bytes
    //Card challenge 8 bytes
    //Card cryptogram 8 bytes
    public static String generateInitializeUpdateAPDU() throws Exception {
        hostChallenge = generateHostChallenge();
        hostChallengeHexString = byteArrayToHexString(hostChallenge);
        return "8050000008" + hostChallengeHexString + "00";
    //CLA '80' or '84'
    //INS 'D8' PUT KEY
    //P1 'xx' Reference control parameter P1 Key Version Number -- '00' is new key range is '01' to '7F'
    //P2 'xx' Reference control parameter P2 Key Identifier     -- '00' to '7F'
    //Lc 'xx' Length of data field
    //Data 'xxxx..' Key data (and MAC if present)
    //Le '00'
    public static String generatePutKeyAPDU() throws Exception {
        String keyCheckValue = new String();
        //keyCheckValue = keyCheckValue.substring(keyCheckValue.length() - (3 * 2));
        keyCheckValue = byteArrayToHexString(deriveEncryptionECB(newKey, hexStringToByteArray("0000000000000000")));
        keyCheckValue = keyCheckValue.substring(keyCheckValue.length() - (3 * 2));
        System.out.println("keyCheckValue :" + keyCheckValue + " 3DES ECB, key is new key '505152535455565758595a5b5c5d5e5f5051525354555657', data is 8 zeroes");
        String encryptedNewKey = byteArrayToHexString(deriveEncryptionECB(sessionDEK, newKey));
        //System.out.println("sessionDEK.getEncoded() :" + sessionDEK.getEncoded() + " len is:" + sessionDEK.getEncoded().length);
        System.out.println("encryptedNewKey :" + encryptedNewKey);
        //testing newKey
        String dataField = "01" + "8010" + encryptedNewKey + "03" + keyCheckValue + "8010" + encryptedNewKey + "03" + keyCheckValue + "8010" + encryptedNewKey + "03" + keyCheckValue;
        // String dataField2 = "01" + "8010" + byteArrayToHexString(newKey) + "03" + keyCheckValue + "8010" + byteArrayToHexString(newKey) + "03" + keyCheckValue + "8010" + byteArrayToHexString(newKey) + "03" + keyCheckValue;
        System.out.println("datafield to calculate cmac :" + dataField);
        System.out.println("icv to calculate cmac is previous mac first 8 byte sessionCMAC in CBC single des :" + byteArrayToHexString(icvNextCommand));
        CMAC = generateCMac2((byte) 0x84, (byte) 0xD8, (byte) 0x00, (byte) 0x81, hexStringToByteArray(dataField), sessionCMAC, icvNextCommand);
        System.out.println("data field with des padding for encryption (encryption in CBC sessionENC) :" + desPadding(dataField));
        String dataField3 = byteArrayToHexString(deriveEncryptionCBC(sessionENC, hexStringToByteArray(desPadding(dataField))));
        System.out.println("data field after encryption :" + dataField3);
        Integer CMACLen = byteArrayToHexString(CMAC).length() / 2;
        System.out.println("CMACLen :" + CMACLen);
        Integer dataFieldLen = dataField3.length() / 2;
        System.out.println("dataFieldLen :" + dataFieldLen);
        Integer intLc = dataFieldLen + CMACLen;
        System.out.println("intLc :" + intLc);
        String hexLc = Integer.toString(intLc, 16);
        System.out.println("hexLc :" + hexLc);
        return "84D80081" + hexLc + dataField3 + byteArrayToHexString(CMAC) + "00";
    //generateExternalAuthenticateAPDU()
    //CLA '84'
    //INS '82' EXTERNAL AUTHENTICATE
    //P1 'xx' Security level --'03' C-DECRYPTION and C-MAC.--'01' C-MAC.'00' No secure messaging expected.
    //P2 '00' Reference control parameter P2
    //Lc '10' Length of host cryptogram and MAC
    //Data 'xx xx…' Host cryptogram and MAC
    //Le Not present
    public static String generateExternalAuthenticateAPDU() throws Exception {
        System.out.println("Calculating and Verifying Host Cryptogram...");
        hostCryptogram = cbcMACSignature(hexStringToByteArray(sequenceCounterHexString + cardChallengeHexString + hostChallengeHexString + "8000000000000000"), sessionENC);
        hostCryptogramHexString = byteArrayToHexString(hostCryptogram);
        System.out.println("hostCryptogram is :" + hostCryptogramHexString);
        CMAC = generateCMac2((byte) 0x84, (byte) 0x82, (byte) 0x03, (byte) 0x00, hostCryptogram, sessionCMAC, new byte[]{0, 0, 0, 0, 0, 0, 0, 0});
        return "8482030010" + hostCryptogramHexString + byteArrayToHexString(CMAC);
    // generateSelectAPDU()
    //CLA '00' ISO/IEC 7816-4 command
    //INS 'A4' SELECT
    //P1 'xx' Reference control parameter P1 --'04' select by name
    //P2 'xx' Reference control parameter P2 --'00' First or only occurrence --'02' Next occurrence
    //Lc 'xx' Length of AID
    //Data 'xxxx..' AID of Application to be selected
    //Le '00'
    // RESPONSE TEMPLATE
    //'6F' File Control Information (FCI template) Mandatory
    //'84' Application / file AID Mandatory
    //'A5' Proprietary data Mandatory
    //'73' Security Domain Management Data (see Appendix F for detailed coding) Optional
    //'9F6E' Application production life cycle data Optional
    //'9F65' Maximum length of data field in command message Mandatory
    public static String generateSelectAPDU(String AID) throws Exception {
        String AIDlen = Integer.toString(AID.length() / 2, 16);
        if (AIDlen.length() == 1) {
            AIDlen = "0" + AIDlen;
        System.out.println("00A40400" + AIDlen + AID);
        return "00A40400" + AIDlen + AID;
    public static String byteArrayToHexString(byte[] b) throws Exception {
        String result = "";
        for (int i = 0; i < b.length; i++) {
            result +=
                    Integer.toString((b[i] & 0xff) + 0x100, 16).substring(1);
        return result;
    public static void initiateCardChannel() throws CardException {
        System.out.println("Connecting to Java Card...");
        TerminalFactory factory = TerminalFactory.getDefault();
        List<CardTerminal> terminals = factory.terminals().list();
        System.out.println("Terminals Detected: " + terminals);
        // get the first terminal
        System.out.println("Connecting to: " + terminals + "...");
        CardTerminal terminal = terminals.get(0);
        System.out.println("Connected to: " + terminals);
        // establish a connection with the card
        System.out.println("Connecting to Java Card...");
        card = terminal.connect("T=0");
        System.out.println("Connected to card: " + card);
        System.out.println("Obtaining Channel...");
        channel = card.getBasicChannel();
        System.out.println("Connecting to Channel: " + channel.getChannelNumber());
    public static void releaseCardChannel() throws CardException {
        System.out.println("Disconnection all...");
        card.disconnect(false);
        System.out.println("Disconnection Done");
        System.out.println("*END*");
    public static byte[] hexStringToByteArray(String s) {
        int len = s.length();
        byte[] data = new byte[len / 2];
        for (int i = 0; i < len; i += 2) {
            data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4) + Character.digit(s.charAt(i + 1), 16));
        return data;
    //To generate the derivation data:
    public static byte[] deriveEncryptionCBC(byte[] keyData, byte[] data) throws GeneralSecurityException {
        //Key key = getSecretKey(keyData);
        if (keyData.length == 16) {
            byte[] temp = (byte[]) keyData.clone();
            keyData = new byte[24];
            System.arraycopy(temp, 0, keyData, 0, temp.length);
            System.arraycopy(temp, 0, keyData, 16, 8);
        SecretKey secretKey = new SecretKeySpec(keyData, "DESede");
        IvParameterSpec dps =
                new IvParameterSpec(new byte[]{0, 0, 0, 0, 0, 0, 0, 0});
        String algorithm = "DESede/CBC/NoPadding";
        Cipher desedeCBCCipher = Cipher.getInstance(algorithm);
        desedeCBCCipher.init(Cipher.ENCRYPT_MODE, secretKey, dps);
        byte[] result = desedeCBCCipher.doFinal(data);
        //adjustParity(result);
        return result;
    public static byte[] deriveEncryptionECB(byte[] keyData, byte[] data) throws GeneralSecurityException {
        //Key key = getSecretKey(keyData);
        if (keyData.length == 16) {
            byte[] temp = (byte[]) keyData.clone();
            keyData = new byte[24];
            System.arraycopy(temp, 0, keyData, 0, temp.length);
            System.arraycopy(temp, 0, keyData, 16, 8);
        SecretKey secretKey = new SecretKeySpec(keyData, "DESede");
        String algorithm = "DESede/ECB/NoPadding";
        Cipher desedeCBCCipher = Cipher.getInstance(algorithm);
        desedeCBCCipher.init(Cipher.ENCRYPT_MODE, secretKey);
        byte[] result = desedeCBCCipher.doFinal(data);
        //adjustParity(result);
        return result;
     * Adjust a DES key to odd parity
     * @param key
     *            to be adjusted
    public static byte[] adjustParity(byte[] key) {
        for (int i = 0; i < key.length; i++) {
            int akku = (key[i] & 0xFF) | 1;
            for (int c = 7; c > 0; c--) {
                akku = (akku & 1) ^ (akku >> 1);
            key[i] = (byte) ((key[i] & 0xFE) | akku);
        return key;
    public static byte[] generateCMac2(byte cla, byte ins, byte p1, byte p2, byte[] dataField, byte[] SMacSessionKey, byte[] icv) throws GeneralSecurityException, Exception {
        if (SMacSessionKey.length == 16) {
            byte[] temp = (byte[]) SMacSessionKey.clone();
            SMacSessionKey = new byte[24];
            System.arraycopy(temp, 0, SMacSessionKey, 0, temp.length);
            System.arraycopy(temp, 0, SMacSessionKey, 16, 8);
        byte[] cMac = new byte[8];
        byte[] padding = {(byte) 0x80, 0, 0, 0, 0, 0, 0, 0};
        int paddingRequired = 8 - (5 + dataField.length) % 8;
        byte[] data = new byte[5 + dataField.length + paddingRequired];
        //Build APDU
        data[0] = cla;
        data[1] = ins;
        data[2] = p1;
        data[3] = p2;
        data[4] = (byte) ((byte) dataField.length + (byte) 0x08);
        System.arraycopy(dataField, 0, data, 5, dataField.length);
        System.arraycopy(padding, 0, data, 5 + dataField.length, paddingRequired);
        System.out.println("data to calculate mac :" + byteArrayToHexString(data));
        System.out.println("icv to calculate mac :" + byteArrayToHexString(icv));
        Cipher cipher = Cipher.getInstance("DESede/CBC/NoPadding");
        Cipher singleDesCipher = Cipher.getInstance("DES/CBC/NoPadding", "SunJCE");
        SecretKeySpec desSingleKey = new SecretKeySpec(SMacSessionKey, 0, 8, "DES");
        SecretKey secretKey = new SecretKeySpec(SMacSessionKey, "DESede");
        //Calculate the first n - 1 block. For this case, n = 1
        IvParameterSpec ivSpec = new IvParameterSpec(icv);
        singleDesCipher.init(Cipher.ENCRYPT_MODE, desSingleKey, ivSpec);
        byte ivForLastBlock[] = singleDesCipher.doFinal(data, 0, 8);
        int blocks = data.length / 8;
        for (int i = 0; i < blocks - 1; i++) {
            singleDesCipher.init(Cipher.ENCRYPT_MODE, desSingleKey, ivSpec);
            byte[] block = singleDesCipher.doFinal(data, i * 8, 8);
            ivSpec = new IvParameterSpec(block);
        int offset = (blocks - 1) * 8;
        cipher.init(Cipher.ENCRYPT_MODE, secretKey, ivSpec);
        cMac = cipher.doFinal(data, offset, 8);
        ivSpec = new IvParameterSpec(new byte[8]);
        singleDesCipher.init(Cipher.ENCRYPT_MODE, desSingleKey, ivSpec);
        icvNextCommand = singleDesCipher.doFinal(cMac);
        return cMac;
    public static byte[] generateHostChallenge() {
        byte[] hostChallenge = new byte[CHALLENGE_LENGTH];
        SecureRandom random = new SecureRandom();
        random.nextBytes(hostChallenge);
        return hostChallenge;
    public static String desPadding(String hexString) {
        System.out.println("String to pad before:" + hexString);
        hexString = hexString + "80";
        int hexStringLen = hexString.length() / 2;
        int padding = 8 - (hexStringLen % 8);
        for (int i = 0; i < padding; i++) {
            hexString = hexString + "00";
        System.out.println("String to pad after :" + hexString);
        return hexString;
}Thanks in advance
Kamran

Unique Key Violation error while updating table

Hi All,
I am having problem with UNIQUE CONSTRAINT. I am trying to update a table and getting the violation error. Here is the over view. We have a table called ActivityAttendee. ActivityAttendee has the following columns. The problem to debug is this table has
over 23 million records. How can I catch where my query is going wrong?
ActivityAttendeeID INT PRIMARY KEY IDENTITY(1,1)
,ActivityID INT NOT NULL (Foreign key to parent table Activity)
,AtendeeTypeCodeID INT NOT NULL
,ObjectID INT NOT NULL
,EmailAddress VARCHAR(255) NULL
UNIQUE KEY is on ActivityID,AtendeeTypeCodeID,ObjectID,EmailAddress
We have a requirement where we need to update the ObjectID. There is a new mapping where I dump that into a temp table #tempActivityMapping (intObjectID INT NOT NULL, intNewObjectID INT NULL)
The problem is ActivityAttendee table might already have the new ObjectID and the unique combination.
For example: ActivityAttendee Table have the following rows
1,1,1,1,NULL
2,1,1,2,NULL
3,1,1,4,'abc'
AND the temp table has 2,1
So essentially when I update in this scenario, It should ignore the second row because, if I try updating that there will be a violation of key as the first record has the exact value. When I ran my query on test data it worked fine. But for 23 million records,
its going wrong some where and I am unable to debug that. Here is my query
UPDATE AA
SET AA.ObjectID = TMP.NewObjectID
FROM dbo.ActivityAttendee AA
INNER JOIN #tmpActivityMapping TMP ON AA.ObjectID = TMP.ObjectID
WHERE TMP.NewObjectID IS NOT NULL
AND NOT EXISTS(SELECT 1
FROM dbo.ActivityAttendee AA1
WHERE AA1.ActivityID = AA.ActivityID
AND AA1.AttendeeTypeCodeID = AA.AttendeeTypeCodeID
AND AA1.ObjectID = TMP.NewObjectID
AND ISNULL(AA1.EmailAddress,'') = ISNULL(AA.EmailAddress,'')

>> I am having problem with UNIQUE CONSTRAINT. I am trying to update a table and getting the violation error. Here is the over view. We have a table called Activity_Attendee. <<
Your problem is schema design. Singular table names tell us there is only one of them the set. Activities are one kind of entity; Attendees are a totally different kind of entity; Attendees are a totally different kind of entity. Where are those tables? Then
they can have a relationship which will be a third table with REFERENCES to the other two.
Your table is total garbage. Think about how absurd “attendee_type_code_id” is. You have never read a single thing about data modeling. An attribute can be “attendee_type”, “attendee_code” or “attendee_id”but not that horrible mess. I have used something like
this in one of my busk to demonstrate the wrong way to do RDBMS as a joke, but you did it for real. The postfix is called an attribute property in ISO-11179 standards.
You also do not know that RDBMS is not OO. We have keys and not OIDs; but bad programmers use the IDENTITY table property (NOT a column!), By definition, it cannot be a key; let me say that again, by definition.
>> ActivityAttendee has the following columns. The problem to debug is this table has over 23 million records [sic: rows are not records]<<
Where did you get “UNIQUE KEY” as syntax in SQL?? What math are you doing the attendee_id? That is the only reason to make it INTEGER. I will guess that you meant attendee_type and have not taken the time to create an abbreviation encoding it.
The term “patent/child” table is wrong! That was network databases, not RDBMS. We have referenced and referencing table. Totally different concept!
CREATE TABLE Attendees
(attendee_id CHAR(10) NOT NULL PRIMARY KEY,
attendee_type INTEGER NOT NULL --- bad design.
CHECK (attendee_type BETWEEN ?? AND ??),
email_address VARCHAR(255),
CREATE TABLE Activities
(activity_id CHAR(10) NOT NULL PRIMARY KEY,
Now the relationship table. I have to make a guess about the cardinally be 1:1, 1:m or n:m.
CREATE TABLE Attendance_Roster
(attendee_id CHAR(10) NOT NULL --- UNIQUE??
REFERENCES Attendees (attendee_id),
activity_id Activities CHAR(10) NOT NULL ---UNIQUE??
REFERENCES Activities (activity_id)
PRIMARY KEY (attendee_id, activity_id), --- wild guess!
>> UNIQUE KEY is on activity_id, attendee_type_code_id_value_category, object_id, email_address <<
Aside from the incorrect “UNIQUE KEY” syntax, think about having things like an email_address in a key. This is what we SQL people call a non-key attribute.
>> We have a requirement where we need to update the ObjectID. There is a new mapping where I dump that into a temp table #tempActivityMapping (intObjectID INTEGER NOT NULL, intNewObjectID INTEGER NULL) <<
Mapping?? We do not have that concept in RDBMS. Also putting meta data prefixes like “int_” is called a “tibble” and we SQL people laugh (or cry) when we see it.
Then you have old proprietary Sybase UODATE .. FROM .. syntax. Google it; it is flawed and will fail.
Please stop programming until you have a basic understanding of RDBMS versus OO and traditional file systems. Look at my credits; when I tell you, I think I have some authority.
--CELKO-- Books in Celko Series for Morgan-Kaufmann Publishing: Analytics and OLAP in SQL / Data and Databases: Concepts in Practice Data / Measurements and Standards in SQL SQL for Smarties / SQL Programming Style / SQL Puzzles and Answers / Thinking
in Sets / Trees and Hierarchies in SQL

How do I do SELECT * FROM TABLE WHERE KEY IN ({list})?

The title says it all really.
Is there a reasonable performant way to perform the query
SELECT * FROM TABLE WHERE KEY IN ({list})where {list} is String []?
I am currently creating a PreparedStatement with a for loop like this StringBuffer sb = new StringBuffer ("SELECT * FROM TABLE WHERE ID IN (");
for (int ii=0;ii<keys.length;ii++) {
sb.append (keys [ii]);
if (ii != keys.length-1) sb.append (",");
sb.append (")");but this means that the prepared statement is created each time I call my method and so I'm not sure that the optimizer will find it easy to cope with. Is there a construction that I'm missing along the lines of SELECT * FROM TABLE WHERE KEY = ? where I can create the PreparedStatement once and just call setObject or something on it when the values in {list} change?

but this means that the prepared statement is created
each time I call my method and so I'm not sure that
the optimizer will find it easy to cope with.You are right, the optimizer won't find that easy to deal with (presuming that is even relevant for your driver/database.) But most optimizers won't do anything with statements that change and that is what you are doing.
You could create several prepared statements which have a common number of bind variables. For example 10 statements with from 1 to 10 bind values. This will work if most of the queries use those.

How to read the Key value from the Message using the text value.. Urgent

I need to read the Key valuefrom the message pool using the text value for the Key.. Is it possible.. Please help me with sample code..
Thanks and Regards
Avijit

Avijit,
I got your requirement. I really dont know the scenario your working on but its possible to do it. There is no direct way to do so, but complexity is in getting to know the Keys dynamically from interface.
Here you go..
     try
          Class msgClass      = IMessageTestWDApps.class;
//Replace IMessageTestWDApps with IMessage<Your WD Component name>
          Field keys[]      = msgClass.getFields();
          IWDTextAccessor textAccessor = wdComponentAPI.getTextAccessor();
          if(keys != null)
               String key = "";
               for(int index=0;index<keys.length;index++)
                    key = keys[index].getName();
                    wdComponentAPI.getMessageManager().reportSuccess("Key= "+key);
                    if(textAccessor.getText(key).equals("My message text"))
                         //your logic.
     catch(Exception cnfe)
          wdComponentAPI.getMessageManager().reportException("Exe "+cnfe.getMessage(),false);
Regards
Abhilash
Message was edited by:
        Abhilash Gampa

Remove the Enter key binding from a JPopupMenu

Hi,
Does anyone know how to remove the Enter key binding from a JPopupMenu?
So when the popupmenu is showing and you type Enter, nothing should happen and the menu should stay where it is.
I have tried:
popup.getActionMap().put("enter", null);
popup.getInputMap().put(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0), "enter");but the popup always disappears.
Any ideas?
Cheers,
patumaire

First of all, that is not the proper way to "remove" a key binding. Read the Swing tutorial on [How to Use Key Bindings|http://java.sun.com/docs/books/tutorial/uiswing/misc/keybinding.html#howto] for more information.
However, we still have a couple of problems:
a) the input map is dynamically built as the popup menu is displayed
b) the input map is built for the root pane, not the popup menu
The following seems to work:
popup.show(...);
InputMap map = getRootPane().getInputMap(JTable.WHEN_IN_FOCUSED_WINDOW);
map.put(KeyStroke.getKeyStroke("ENTER"), "none");
KeyStroke[] keys = map.allKeys();
for (int i = 0; i < keys.length; i++)
     KeyStroke key = keys;
     Object action = map.get( key );
     System.out.println(key + " : " + action);

Error when i set primary key to a field in table

I created a table. with one primary key field
on saving it following error happened
at Microsoft.SqlServer.Management.DataTools.Interop.IDTDocTool.Save(Object dsRef, String path, Boolean okToOverwrite)
at Microsoft.SqlServer.Management.UI.VSIntegration.Editors.VsDataDesignerNode.Save(VSSAVEFLAGS dwSave, String strSilentSaveAsName, IVsUIShell pIVsUIShell, IntPtr punkDocDataIntPtr, String& strMkDocumentNew, Int32& pfCanceled)
then i removed primary key. Table was saved successfully.
I need to make primary key field.. how can i solve it?

CREATE TABLE tblname (c INT NOT NULL PRIMARY KEY)
Have you ran the above statement successfully? Do you create a table in VS?
Best Regards,Uri Dimant SQL Server MVP,
http://sqlblog.com/blogs/uri_dimant/
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Business Intelligence

To populate dynamically created int table with data from other table

Hi everybody,
I have already created an internal table dynamically, but now want to populate it with data from another IT depending on the plant name.
My dynamic int table contains fields with plant name like '8001' ,'8002' and so on.
no I want to read data from the other table and depending on bwkey which contains similar data like plant name , want to append to this new dynamic int table through read key statement.
I cannot reference the field name hard coded as it does not allow field symbol reference to be hard coded.
Pls help.

Hi,
Check the code below:
REPORT ztestdyn.
TYPE-POOLS : slis.
TABLES: yyle0003.
DATA:
g_exit    TYPE c,
g_save    VALUE 'A',               "For parameter I_SAVE
g_repid   LIKE sy-repid,           "For program name
g_variant TYPE disvariant.         "For parameter IS_VARIANT
*Tables
DATA: d_ref TYPE REF TO data,
        d_ref1 TYPE REF TO data,
        i_alv_cat1 TYPE TABLE OF lvc_s_fcat,
        ls_alv_cat1 LIKE LINE OF i_alv_cat1.
DATA: BEGIN OF total_tab OCCURS 0 ,
        tknum TYPE yyle0003-tknum,
        quantity TYPE p, "yyle0003-QUANTITY,
        END OF total_tab.
DATA: BEGIN OF g_scandata_tab OCCURS 0.
          INCLUDE STRUCTURE yyle0003.
DATA: END OF g_scandata_tab.
DATA: g_yyle0003_tab LIKE yyle0003 OCCURS 0 WITH HEADER LINE.
DATA: g_itab1 TYPE TABLE OF yyle0003.
DATA: wa_itab1 LIKE g_scandata_tab.
TYPES: BEGIN OF itab2,
         tknum TYPE yyle0003-tknum,
         vhilm TYPE yyle0003-vhilm,
         quantity TYPE p,
         END OF itab2.
DATA: g_itab3 TYPE TABLE OF itab2.
DATA: wa_itab3 TYPE itab2.
DATA: g_itab5 TYPE TABLE OF itab2.
DATA: wa_itab5 TYPE itab2.
DATA: g_itab4 TYPE TABLE OF itab2.
DATA: wa_itab4 TYPE itab2.
DATA: gv_wa TYPE REF TO data.
DATA : wa_tab TYPE itab2.
DATA: BEGIN OF itab6 OCCURS 0,
         vhilm TYPE yyle0003-vhilm,
         quantity TYPE p,
         END OF itab6.
******************Start of Internal Table Definition *******************
DATA:
        g_custom_container_0100 TYPE REF TO cl_gui_custom_container,
        g_alv_grid_0100    TYPE REF TO cl_gui_alv_grid,
        g_container_0100   TYPE scrfname VALUE 'LIST',
        g_mylayout         TYPE lvc_s_layo,
        ok_code            LIKE sy-ucomm.
FIELD-SYMBOLS :<f_fs> TYPE table,
                 <f_fs11> TYPE table,
                 <f_fs1> TYPE table,
                 <f_fs3> TYPE ANY,
                 <f_fs4> TYPE ANY,
                 <f_field> TYPE ANY,
                 <f_fs5> TYPE ANY.
FIELD-SYMBOLS: <fs_wa> TYPE ANY.
DATA: l_var TYPE i,
        l_i   TYPE i.
DATA: l_var1 TYPE char20,
        l_var2 TYPE char20.
DATA: l_TOTAL TYPE I,
      L_FILL TYPE i,
      L_TOT TYPE I.
DATA: l_int TYPE i,
       l_sum TYPE i.
FIELD-SYMBOLS: <f_fs2> TYPE itab2, "
                 <f_fs6> TYPE ANY,
                 <f_fs7> TYPE ANY.
DATA: l_var3 TYPE char15.
DATA: l_quant TYPE p.
FIELD-SYMBOLS: <f_fs8> LIKE itab6, "
                 <f_fs9> TYPE ANY,
                 <f_fs10> TYPE ANY.
FIELD-SYMBOLS : <f_fs12> TYPE ANY,
                  <f_fs13> TYPE ANY.
SORT g_scandata_tab BY tknum vhilm.
LOOP AT g_scandata_tab INTO wa_itab1.
    MOVE-CORRESPONDING wa_itab1 TO wa_itab3.
    APPEND wa_itab3 TO g_itab3.
ENDLOOP.
LOOP AT g_itab3 INTO wa_itab3.
    COLLECT wa_itab3 INTO g_itab4.
ENDLOOP.
LOOP AT g_itab4 INTO wa_itab4.
    MOVE-CORRESPONDING wa_itab4 TO wa_itab5.
    MOVE-CORRESPONDING wa_itab4 TO itab6.
    APPEND wa_itab5 TO g_itab5.
    COLLECT itab6.
ENDLOOP.
CLEAR wa_itab3.
SORT g_itab4 BY tknum vhilm.
DELETE ADJACENT DUPLICATES FROM g_itab4 COMPARING vhilm.
DESCRIBE TABLE g_itab4 LINES l_var.
l_i = '2'.
ls_alv_cat1-fieldname = 'TKNUM'.
ls_alv_cat1-col_pos = 1.
ls_alv_cat1-coltext ='ShipmentNo.'.
APPEND ls_alv_cat1 TO i_alv_cat1.
DATA: l_var4(10) TYPE c,
        l_var5(10) TYPE c,
        l_fieldname(20) TYPE c..
LOOP AT g_itab4 INTO wa_itab4.
    IF l_var >= 1.
      CONDENSE wa_itab4-vhilm NO-GAPS.
      ls_alv_cat1-fieldname = wa_itab4-vhilm. "l_fieldname.
      ls_alv_cat1-col_pos = l_i.
      ls_alv_cat1-coltext = wa_itab4-vhilm.
      ls_alv_cat1-do_sum ='X'.
      APPEND ls_alv_cat1 TO i_alv_cat1.
      CLEAR : ls_alv_cat1, l_fieldname.
      l_i = l_i + 1.
    ENDIF.
    AT LAST.
      ls_alv_cat1-fieldname = 'TOTAL'. "l_fieldname.
      ls_alv_cat1-col_pos = l_i.
      ls_alv_cat1-coltext = 'TOTAL'.
      ls_alv_cat1-do_sum ='X'.
      APPEND ls_alv_cat1 TO i_alv_cat1.
      CLEAR : ls_alv_cat1, l_fieldname.
    ENDAT.
    SORT i_alv_cat1 BY fieldname.
    DELETE ADJACENT DUPLICATES FROM i_alv_cat1.
ENDLOOP.
SORT i_alv_cat1 BY col_pos.
CALL METHOD cl_alv_table_create=>create_dynamic_table
    EXPORTING
      it_fieldcatalog = i_alv_cat1
    IMPORTING
      ep_table = d_ref.
ASSIGN d_ref->* TO <f_fs>.
CREATE DATA gv_wa LIKE LINE OF <f_fs>.
ASSIGN gv_wa->* TO <fs_wa>.
DELETE ADJACENT DUPLICATES FROM <f_fs> COMPARING ALL FIELDS.
    LOOP AT itab6.
    CLEAR wa_itab5.
    wa_itab5-tknum = 'Total'.
    MOVE-CORRESPONDING itab6 TO wa_itab5.
    APPEND wa_itab5 TO g_itab5.
    CLEAR wa_itab5.
ENDLOOP.
     DESCRIBE TABLE g_itab5 LINES L_TOT.
       LOOP AT TOTAL_TAB.
      L_TOTAL = L_TOTAL + total_tab-quantity.
     ENDLOOP.
LOOP AT g_final ASSIGNING <f_fs2>.
    ASSIGN COMPONENT 'TKNUM' OF STRUCTURE <f_fs2> TO <f_fs6>.
    ASSIGN COMPONENT 'TKNUM' OF STRUCTURE <fs_wa> TO <f_fs7>.
    <f_fs7> = <f_fs6>.
    CONDENSE <f_fs2>-vhilm NO-GAPS.
    ASSIGN COMPONENT 'VHILM' OF STRUCTURE <f_fs2> TO <f_fs3>.
    ASSIGN COMPONENT 3 OF STRUCTURE <f_fs2> TO <f_fs4>.
    MOVE <f_fs3> TO l_var1.
    ASSIGN COMPONENT l_var1 OF STRUCTURE <fs_wa> TO <f_fs5>.
    <f_fs5> = <f_fs4>.
    CLEAR total_tab-quantity.
    READ TABLE total_tab WITH KEY tknum = <f_fs6>.
    IF sy-subrc = 0.
      ASSIGN total_tab-quantity TO <f_fs12>.
      ASSIGN COMPONENT 'TOTAL' OF STRUCTURE <fs_wa> TO <f_fs13>.
      <f_fs13> = <f_fs12>.
    ENDIF.
    L_FILL = L_FILL + 1.
    IF L_FILL = L_TOT.
     ASSIGN L_TOTAL TO <f_fs12>.
      ASSIGN COMPONENT 'TOTAL' OF STRUCTURE <fs_wa> TO <f_fs13>.
      <f_fs13> = <f_fs12>.
    ENDIF.
    AT END OF <f_fs2>-tknum.
      APPEND <fs_wa> TO <f_fs>.
      CLEAR <fs_wa>.
    ENDAT.
ENDLOOP.
CLEAR: <f_fs6>,
          <f_fs7>.
CLEAR <fs_wa>.
CALL SCREEN 0100.
*&      Module STATUS_0100 OUTPUT
      text
MODULE status_0100 OUTPUT.
SET PF-STATUS 'ZVKS'.
SET TITLEBAR 'ZVKS'.
CHECK sy-ucomm IS INITIAL.
SORT g_scandata_tab BY tknum vhilm.
CREATE OBJECT g_custom_container_0100
         EXPORTING container_name = g_container_0100
         EXCEPTIONS
           cntl_error = 1
           cntl_system_error = 2
           create_error = 3
           lifetime_error = 4
           lifetime_dynpro_dynpro_link = 5.
CREATE OBJECT g_alv_grid_0100
         EXPORTING i_parent = g_custom_container_0100.
g_mylayout-grid_title = 'Display Scanning data'.
CALL METHOD g_alv_grid_0100->set_table_for_first_display
    CHANGING
      it_outtab                     = <f_fs>
      it_fieldcatalog               = i_alv_cat1
                EXCEPTIONS
                  invalid_parameter_combination = 1
                  program_error                 = 2
                  too_many_lines                = 3
                  OTHERS                        = 4.
IF sy-subrc <> 0.
              MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
                         WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
ENDMODULE.                 " STATUS_0100 OUTPUT
Regards
Kannaiah

How can I use a mySQL database schema with numeric auto increment primary key instead of GUID?

Hello!
I'm using the TestStand "MySQL Insert (NI)" database schema with GUID as primary key. So everything works fine.
But I prever using numeric values as primary key, because the database is in conjunction with another database which uses numeric values as primary key.
Is this possible?
Has anyone an idea how I can modify the "Generic Recordset (NI)" for use with MySQL?
Thanks!
Configuration:
Microsoft Windows XP
TestStand 3.1
MySQL 4.1.12a
MySQL ODBC 3.51 Driver
Brosig

Adam -
The TestStand Database Logging feature does not allow you to run a separate SQL command after executing the command for a statement(table), so I do not think that you can use an auto incrementing column for the tables. There is just no way to get it back in a generic way. One option that I tried is something similar to the Oracle schema where you call a store procedure to return a sequence ID for each record that you want to add.
So you would have to create the following sequence table in MySQL:
CREATE TABLE sequence (id INT NOT NULL);
INSERT INTO sequence VALUES (0);
Then create a stored procedure as shown below that will increment the sequence value and return it in a recordset:
CREATE PROCEDURE `getseqid`()
BEGIN
        UPDATE sequence SET id=LAST_INSERT_ID(id+1);
        SELECT LAST_INSERT_ID();
END
Then update the MySQL tables to use INT primary and foreign key values, so the TestStand MySQL SQL file to create all tables would have text like this:
CREATE TABLE UUT_RESULT
ID    INT PRIMARY KEY,
~
CREATE TABLE STEP_RESULT
ID    INT PRIMARY KEY,
UUT_RESULT   INT NOT NULL,
~
Then update the schema primary and foreign key columns in the TestStand Database Options dialog box to be INT to match the table. For the primary key columns, you will have to set the Primary Key Type to "Get Value from Recordset" and set the Primary Key Command Text to "call getseqid()". This will call the stored procedure to determine the next value to use as the ID value.
Hope this helps...
Scott Richardson
National Instruments

Primary key and Foreign Key

Hello,
I have a question which was asked in an interview
Can a Primary key in a table also act as a foreign key in the same table ?
If yes than please provide a simple example
Thanks
www.techgulf.blogspot.com

See this illustration
create table t
id int identity(1,1) not null primary key,
val varchar(100)
create table t2
id int not null primary key,
val varchar(100)
-- make pk itself as fk to table t
alter table t2 add constraint fk_t2 foreign key (id) references t(id)
--some test values to t
insert t (val)
values ('test'),('test1'),('test2')
-- populate t2 first two suceeds
insert t2(id,val)
values (1,'iuyi')
insert t2(id,val)
values (2,'ef24r')
-- this will fail as we dont have record with id 4 in t
insert t2(id,val)
values (4,'weqw')
--check the output
select * from t
select * from t2
Please Mark This As Answer if it helps to solve the issue Visakh ---------------------------- http://visakhm.blogspot.com/ https://www.facebook.com/VmBlogs

UUID vs Int as a bdb key

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