Compiling with mysql

Wed Sep 3 14:53:00 GMT 2008

Andrew, i dont understand what do you mean with exactly, I will try to
explain again, i isolated the problem only compiling a short code that only
conects to the database and exit. 
1) The code is the following
import java.sql.*;
public class MysqlConnect{
 public static void main(String[] args) {
 System.out.println("MySQL Connect Example.");
 Connection conn = null;
 String url = "jdbc:mysql://localhost:3306/";
 String dbName = "myDatabase";
 String driver = "com.mysql.jdbc.Driver";
 String userName = "root";
 String password = "root";
 try {
 Class.forName(driver).newInstance();
 conn = DriverManager.getConnection(url+dbName,userName,password);
 System.out.println("Connected to the database");
 conn.close();
 System.out.println("Disconnected from database");
 } catch (Exception e) {
 e.printStackTrace();
 }
 }
}
2) I compile
gcj --main=MysqlConnect -o mysqlconnect MysqlConnect.java
(gcj version : 4.3.1)
3) Execution:
./mysqlconnect
4) Output:
MySQL Connect Example.
com.mysql.jdbc.exceptions.MySQLSyntaxErrorException: You have an error in
your SQL syntax; check the manual that corresponds to your MySQL server
version for the right syntax to use near '????????????????????????????????'
at line 1
 at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:936)
 at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2985)
 at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1631)
 at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1723)
 at com.mysql.jdbc.Connection.execSQL(Connection.java:3277)
 at
com.mysql.jdbc.Connection.configureClientCharacterSet(Connection.java:2525)
 at
com.mysql.jdbc.Connection.initializePropsFromServer(Connection.java:4139)
 at com.mysql.jdbc.Connection.createNewIO(Connection.java:2789)
 at com.mysql.jdbc.Connection.<init>(Connection.java:1555)
 at
com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:285)
 at java.sql.DriverManager.getConnection(libgcj.so.90)
 at java.sql.DriverManager.getConnection(libgcj.so.90)
 at MysqlConnect.main(MysqlConnect.java:14)
5) I installed a previous version of gcj 4.2 and repetead the compilation
and execution, and the result was the following:
MySQL Connect Example.
java.sql.SQLException: Error during query: Unexpected Exception:
java.io.CharConversionException message given: null
Nested Stack Trace:
** BEGIN NESTED EXCEPTION ** 
java.io.CharConversionException
STACKTRACE:
java.io.CharConversionException
 at gnu.gcj.convert.Input_iconv.read(libgcj.so.81)
 at java.lang.String.init(libgcj.so.81)
 at java.lang.String.<init>(libgcj.so.81)
 at
com.mysql.jdbc.SingleByteCharsetConverter.<init>(SingleByteCharsetConverter.java:153)
 at
com.mysql.jdbc.SingleByteCharsetConverter.initCharset(SingleByteCharsetConverter.java:108)
 at
com.mysql.jdbc.SingleByteCharsetConverter.getInstance(SingleByteCharsetConverter.java:86)
 at com.mysql.jdbc.Connection.getCharsetConverter(Connection.java:3505)
 at com.mysql.jdbc.StringUtils.getBytes(StringUtils.java:615)
 at com.mysql.jdbc.Buffer.writeStringNoNull(Buffer.java:655)
 at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1686)
 at com.mysql.jdbc.Connection.execSQL(Connection.java:3277)
 at
com.mysql.jdbc.Connection.configureClientCharacterSet(Connection.java:2525)
 at
com.mysql.jdbc.Connection.initializePropsFromServer(Connection.java:4139)
 at com.mysql.jdbc.Connection.createNewIO(Connection.java:2789)
 at com.mysql.jdbc.Connection.<init>(Connection.java:1555)
 at
com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:285)
 at java.sql.DriverManager.getConnection(libgcj.so.81)
 at java.sql.DriverManager.getConnection(libgcj.so.81)
 at MysqlConnect.main(mysqlconnect)
** END NESTED EXCEPTION **
 at com.mysql.jdbc.Connection.execSQL(Connection.java:3330)
 at
com.mysql.jdbc.Connection.configureClientCharacterSet(Connection.java:2525)
 at
com.mysql.jdbc.Connection.initializePropsFromServer(Connection.java:4139)
 at com.mysql.jdbc.Connection.createNewIO(Connection.java:2789)
 at com.mysql.jdbc.Connection.<init>(Connection.java:1555)
 at
com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:285)
 at java.sql.DriverManager.getConnection(libgcj.so.81)
 at java.sql.DriverManager.getConnection(libgcj.so.81)
 at MysqlConnect.main(mysqlconnect)
6) It seems it cant execute the line conn =
DriverManager.getConnection(url+dbName,userName,password);
>From the same machine executing with java sun, it did well, but not with the
java version from the gcj.. 
It was exactly what i did.. dont know what else could i add.
Andrew Haley wrote:
>> ezer wrote:
>> New try:
>>>> I generated mysql-connector-java-5.0.8-bin.o
>> and used it in the compilation of the program
>> gcj --main=Search --classpath=mysql-connector-java-5.0.8-bin.o 
>> Searcher.jar
>> -o search
>>>> It compiles without errors, but when i execute ./search i get
>> segmentation
>> fault
>>>> I dont know what to do.. help please...
>> the key problem here is that you haven't told us *exactly* what you are
> doing. We need to know if we can help you.
>> http://www.catb.org/~esr/faqs/smart-questions.html
>> Andrew.
>>>>
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