Substring Chinese Character

Hi guys,
I'm a newbie to this forum and I just started using PL/SQL again after 2 years. I'm working with oracle form and I have a field with size of VARCHAR2(30). My stuff should work for chinese and latin and I got into trouble when i try to substring from varchar2(90) to varchar2(30) with chinese character.
vstring VARCHAR2(90);
SUBSTR(vstring,1,30) "INCOTERMS_REF" VARCHAR2(30)
If I just used substr(), it'll become 60 bytes because the chinese character and causing buffer too small. Any idea???

Chinese, and most languages, are multibyte so you must determine lengths and perform substrings and instrings in bytes ... not characters.
Look at the following functions
INSTRB
INSTRC
INSTR2
INSTR4
LENGTHB
LENGTHC
LENGTH2
LENGTH4
SUBSTRB
SUBSTRC
SUBSTR2
SUBSTR4
here:
http://www.psoug.org/reference/builtin_functions.html
Also be aware that, when working in Chinese and other languages your ORDER BY clause, and your SORT ORDER options, have a very different meaning. Look at Oracle's globalization docs for advice.

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Retrieve the unicode from a chinese character stored in MS Access database

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I have a table in MS Access database with chinese character. When I read it from my sql queries I get the "?" instead of the chinese character. When I calculate the unicode I get the 003F which is the unicode for the questionmark. How do I get the correct unicode of the chinese character?
Connection conn = DriverManager.getConnection("jdbc:odbc:myDB"); Statement stmt = conn.createStatement(); String sqlString = "SELECT Char FROM MyTable WHERE id=2"; ResultSet rs = stmt.executeQuery(sqlString); String s1 = rs.getString("Char"); // the s1 is the ? instead of the chinese character. byte[] b = s1.getBytes(Charset.forName("UTF-16")); int firstByte = 0; short anUnsignedByte = 0; String unicode = ""; for(int n = 0; n < b.length; n++){ String temp = ""; firstByte = (0x000000FF & ((int)b[n])); anUnsignedByte = (short)firstByte; temp = Integer.toHexString(anUnsignedByte); if(temp.length() == 1){ temp = "0" + temp; } unicode = unicode + temp; } unicode = unicode.substring(4); System.out.println("unicode: " + unicode); //Here I get the unicode, 003f, for the question mark.

Apparently getString() is already applying the wrong encoding to the bytes which are in the data, so you can't do anything with what it returns. (This isn't surprising since it's Access you are asking about.) I suggest using the getObject() method and see what it returns. If it returns the same string then you are out of luck. But maybe you'll get lucky and it will return an array of bytes containing the correct data. Don't get too hopeful though.

How can i convert jstring to PSTR with chinese character

Hi all,
I'm not an expert of C++. So please help me to fix the following problem.
I'm using jni to call the dll. In java side, the input parameter is jstring. In C++ side, the input parameter of PrintDrugReceipt are PSTR.
The following is the code of my C++:
#include <windows.h>
#include <stdio.h>
#include <jni.h>
#include "DrugReceiptWrapper.h"
#include "DrugReceipt.h"
const char * JNU_GetStringNativeChars(JNIEnv *env, jobject obj, jstring jstr) {
jbyteArray bytes = 0;
jthrowable exc;
     jclass cls;
     jmethodID getBytes;
char *result = 0;
if ((*env)->EnsureLocalCapacity(env, 2) < 0) {
return 0; /* out of memory error */
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     if (!exc) {
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         result = (char *)malloc(len + 1);
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             //JNU_ThrowByName(env, "java/lang/OutOfMemoryError", 0);
             (*env)->DeleteLocalRef(env, bytes);
             return 0;
(*env)->GetByteArrayRegion(env, bytes, 0, len, (jbyte *)result);
result[len] = 0; /* NULL-terminate */
} else {
(*env)->DeleteLocalRef(env, exc);
(*env)->DeleteLocalRef(env, bytes);
return result;
JNIEXPORT jlong JNICALL
Java_TestPrint_PrintDrugReceiptWrapper(
JNIEnv *env, jobject obj,
jstring jlprPrinterPort, jstring jlprSourceChiName,
jstring jlprTargetChiName, jstring jlprPrintData1,
jstring jlprPrintData2, jstring jlprCaseNo, jstring jlprReceiptNo){
     PSTR lprPrinterPort;
     PSTR lprSourceChiName;
     PSTR lprTargetChiName, lprPrintData1;
PSTR lprPrintData2 , lprCaseNo, lprReceiptNo;
     printf("before %s", jlprSourceChiName);
     lprPrinterPort = (*env)->GetStringChars(env, jlprPrinterPort , 0);
     lprSourceChiName = (*env)->GetStringChars(env, jlprSourceChiName, 0);
     lprTargetChiName = (*env)->GetStringChars(env, jlprTargetChiName, 0);
     lprPrintData1 = (*env)->GetStringChars(env, jlprPrintData1 , 0);
     lprPrintData2 = (*env)->GetStringChars(env, jlprPrintData2 , 0);
lprCaseNo = (*env)->GetStringChars(env, jlprCaseNo , 0);
     lprReceiptNo = (*env)->GetStringChars(env, jlprReceiptNo , 0);
     PrintDrugReceipt(lprPrinterPort, lprSourceChiName, lprTargetChiName, lprPrintData1, lprPrintData2, lprCaseNo, lprReceiptNo);
     (*env)->ReleaseStringChars(env, jlprPrinterPort , lprPrinterPort);
     (*env)->ReleaseStringChars(env, jlprSourceChiName, lprSourceChiName);
     (*env)->ReleaseStringChars(env, jlprTargetChiName, lprTargetChiName);
     (*env)->ReleaseStringChars(env, jlprPrintData1 , lprPrintData1);
     (*env)->ReleaseStringChars(env, jlprPrintData2 , lprPrintData2);
     (*env)->ReleaseStringChars(env, jlprCaseNo , lprCaseNo);
     (*env)->ReleaseStringChars(env, jlprReceiptNo , lprReceiptNo);
     return 1;
the h file:
/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class TestPrint */
#ifndef _Included_TestPrint
#define _Included_TestPrint
#ifdef __cplusplus
extern "C" {
#endif
* Class: TestPrint
* Method: PrintDrugReceipt
* Signature: (Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)J
JNIEXPORT jlong JNICALL Java_TestPrint_PrintDrugReceiptWrapper
(JNIEnv *, jobject, jstring, jstring, jstring, jstring, jstring, jstring, jstring);
#ifdef __cplusplus
#endif
#endif
Note: the jstring input parameters are the chinese character. If i print out the jstring, it will display dirty character, why? and how to fix it? and the PrintDrugReceipt will expected accept the chinese character and print it to the printer.
Thank you for you guys help.
Matthew

you can't use char...have to use a wchar....and look around at the wide character handling function in C/C++.

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Hi All,
I really runs out of idea about my problem now. The problem is about Print Chinese character to dot matrix printer (Epson LQ-1600K III). I tried to so many device type to solve this issue, looks like the only device type can be use are CNSAPWIN and CNEPSON with CNSONG font type. The others if I print to the printer, the chinese character became # (although in the print preview it`s okay and display correctly).
Here is the bottleneck if I use CNEPSON:
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Here is the bottleneck if I use CNSAPWIN:
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Regards,
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Hi friends , we are using the same model ....
Are you using the chinese version operation system ? because we can print the chinese charaters without problem in LQ 1600KIII .....
We are using CNSAPWIN device type + Frondend printing access method ....
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Hi Bala,
Goto he Initial screen of SAP and click the ALT+F12 costomizating of local setup.the choose the options-->choose the I18N Tab in that POP up and check the Activate the multi byte support.
press Apply and OK.
close the SAP Log on and Re-loag on.if u r not closing the Logon screen the changes wiil not effect.
or
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GUI Download Chinese Character to Excel gibberish character

Hi Experts,
I'm facing a problem where I'm using FM gui_download to save Chinese Character into Excel file.
Upon double click to open the excel file, funny character shows up.
But if I were to open the same file using a blank Ms Excel application (Go to File->Open->choose file),
Excel will prompt me to select a proper encoding (GB2312 in this case), and the Chinese character can be seen thereafter.
But, my user doesn't want to go through this.
I've browsed through the forum and someone has posted about this before and it's unanswered.
How to download the chinese character using GUI_DOWNLOAD - unanswered
And, Re: GUI_DOWNLOAD give 2 bytes for each chinese character - I need fixed len which is not related to my problem.
Below is my code:
DATA: lv_codepage   TYPE cpcodepage,
        lv_char_cpage TYPE abap_encod,
        lv_encoding   TYPE abap_encod.
Get Code Page for Chinese Character Spras = '1' or 'ZH'
CALL FUNCTION 'NLS_GET_FRONTEND_CP'
    EXPORTING
      langu                 = '1'   " Chinese Simplified Table T002
      fetype                = 'MS' " Manufacturer is Microsoft Table TCP05
    IMPORTING
      frontend_codepage     = lv_codepage
    EXCEPTIONS
      illegal_syst_codepage = 1
      no_frontend_cp_found = 2
      internal_or_db_error = 3
      OTHERS                = 4.
Conversion c(4) = n(10)
lv_char_cpage = lv_codepage.
CALL FUNCTION 'GUI_DOWNLOAD'
    EXPORTING
      filename                = p_file
      filetype                = 'DAT'                       "tried ASC and not working as well
      codepage                = lv_char_cpage   "8404 in this case tried 8400 and same result
      replacement             = '#'
      write_field_separator   = 'X'
    TABLES
      data_tab                = i_data_cnvr        "table content
      fieldnames              = i_data_head      "table header
Please help. Does this has something to do with utf-8 encoding?
Thank you.
Thanks,
ZY See

Hi Nitesh,
Is there a way to check the Excel codepage? Do you mean by codepage = 936 for GB2312 encoding?
Anyway, this issue is fixed. Issue is related to unicode system.
Below codes for gui_download solved the problem.
CALL FUNCTION 'GUI_DOWNLOAD'
    EXPORTING
      filename                = p_file
      filetype                = 'DAT'
      codepage                = '4103'
      replacement             = '#'
      write_field_separator   = 'X'
      write_bom               = 'X'
    TABLES
      data_tab                = i_data_cnvr
      fieldnames              = i_data_head
Codepage = 4103 for utf-16 Unicode system.
Write-bom = 'X' to write Byte-Order-Mark.
Thanks,
ZY See

GUI_DOWNLOAD give 2 bytes for each chinese character - I need fixed length

Due to the Unicode system takes each Chinese character as a byte, the field(10) can take 10 Chinese Characters, not like before only 5 characters allowed.
The problem is when the data is downloaded to a txt file. Some records contains only Western Europe charactes and will fill 10 bytes in the output file and other records contains only Chinese characters and will fill up 20 bytes in the output file.
The data is exported for a system that can upload chinese characters, but only allow fixed record length file (always 10 bytes).
In other words: the records with Western Europe characters should contain 10 characters = 10 bytes but the records with Chinese characters should only contain 5 characters = 10 bytes.
Anyone who can solve this, thanks in advance.
My code:
CALL METHOD CL_GUI_FRONTEND_SERVICES=>GUI_DOWNLOAD
    EXPORTING
      FILENAME                = p_file
      CONFIRM_OVERWRITE       = 'X'
      codepage                = '8400' "Chinese
    CHANGING
      DATA_TAB                = it_output
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Hi Thomas,
Now I understand.
Pl. check the class CL_ABAP_CONV_X2X_CE.
May it can help u.
Here is it's documentation.
CL CL_ABAP_CONV_X2X_CE
Short Text
Code Page and Endian Conversion Between External Formats
Functionality
Instances of the class CL_ABAP_CONV_X2X_CE allow you to convert text data between different character sets and numeric data between different number formats (byte order).
Using the class corresponds to transforming data from a binary input stream to a binary output stream: The data objects are read from the input buffer sequentially and written to an output buffer.
The class methods are normally used as follows:
CL_ABAP_CONV_X2X_CE=>CREATE
This creates a conversion instance. Among other options, you can specify the following as parameters: The input buffer (that is the binary string that contains the data to be read), the character format at used in the input buffer, the byte order used in the input buffer, the character format to be used in the output buffer, or the byte order to be used in the output buffer.
CONVERT_C, CONVERT_...
This converts the data. Calling this method several times consecutively allows you to read data from the input buffer sequentially and add it to the end of the output buffer.
GET_OUT_BUFFER
This gets the output buffer, making it available for further processing (such as writing to a file, sending using RFC).
RESET
This allows you to reset individual attributes of the conversion instance. (This method is especially designed for restarting on a new input buffer and deleting the output buffer while retaining the remaining attributes.)
Relationships
CL_ABAP_CONV_IN_CE
Converting Binary Data into ABAP Data Objects
CL_ABAP_CONV_OUT_CE
Converting ABAP Data Objects to a Binary Format.
CL_ABAP_CHAR_UTILITIES
Various Attributes and Methods for Character Sets and Byte Order
Example
In the following example, UTF-8 texts are converted to the codepage 1100 (Latin-1) and numbers are converted from little-endian to big-endian format:
DATA:
in_buffer TYPE XSTRING,
out_buffer TYPE XSTRING,
conv TYPE REF TO cl_abap_conv_x2x_ce.
in_buffer = '414220C3B602010000'.
conv = cl_abap_conv_x2x_ce=>create(
         in_encoding = 'UTF-8'
         in_endian = 'L'
         out_encoding = '1100'
         out_endian = 'B'
         input = in_buffer
CALL METHOD conv->convert_c( n = 5 ).
CALL METHOD conv->convert_i( ).
out_buffer = conv->get_out_buffer( ).
The content of the in_buffer variable is made up of 5 bytes (hexadecimal "414220C3B6"), which represent 4 UTF-8 characters (A, B, SPACE, o-Umlaut), and 4 bytes (hexadecimal "02010000"), which represent the value 258 in little-endian format. This data is converted and the out_buffer variable now contains the hexadecimal string "414220F600000102". It is made up of:
4 bytes (hexadecimal "414220F6"), which represent the above 4 characters in codepage 1100 (ISO-8859-1). Note that the length specification n = 5 refers to the number of elementary characters to be converted. For multi-byte codepages like UTF-8 this means that the multi-byte character "C3B6" is counted in length 2.
4 Bytes (hexadecimal "00000102"), which represent the value 258 in big-endian format.
If you have the desired byte order in the old format as expected by TRANSLATE ... NUMBER FORMAT (as an N(4) value), you can proceed as follows:
TYPE-POOLS: ABAP.
CLASS cl_abap_char_utilities DEFINITION LOAD.
DATA:
in_number_format(4) TYPE N VALUE '0101',
out_number_format(4) TYPE N VALUE '0000'.
DATA:
in_endian TYPE ABAP_ENDIAN,
out_endian TYPE ABAP_ENDIAN,
conv TYPE REF TO cl_abap_conv_x2x_ce..
in_endian = cl_abap_char_utilities=>number_format_to_endian(
               in_number_format
out_endian = cl_abap_char_utilities=>number_format_to_endian(
               out_number_format
conv = cl_abap_conv_x2x_ce=>create(
         in_encoding = 'UTF-8'
         in_endian = in_endian
         out_encoding = '1100'
         out_endian = out_endian
         input = in_buffer
Notes
For details refer to the documentation for the individual methods.
Regards,
Joy.

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Kwangbock.

Hi James
Oh~ It perfectly works!!
I've been tried to solve this problem for a long time and
I really appreciate for your help~
Thanks~
Kwangbock.

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How to download the chinese character using GUI_DOWNLOAD

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Make sure that the chinese font is installed in your system, because when you download in excel, the character formats are taken from the Frontend. For detail see the below thread.
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Substring Chinese Character

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