Exception:Unsupported method

Question

hi,
I use sqlserver 2000' jdbc driver(4 type) to connect sqlserver ,on jdbc's online help ,shows that the drivers supports 'Resultset.beforeFirst()" method . but when I use this method in my application ,it throws
java.sql.SQLException: [Microsoft][SQLServer JDBC Driver]Unsupported method: ResultSet.beforeFirst
at com.microsoft.jdbc.base.BaseExceptions.getException(Unknown Source)
at com.microsoft.jdbc.base.BaseResultSet.validateScrollable(Unknown Source)
at com.microsoft.jdbc.base.BaseResultSet.beforeFirst(Unknown Source)
at testjdb.main(testjdb.java:34)
I decompile com.microsoft.jdbc.base.BaseResultSet Class and find "beforeFirst()" method ,but why it isn't supported?

Answer 1

Hi,
Yes, it should work. Here, is my part of code
stmt =con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_READ_ONLY);
rs=stmt.executeQuery("select * from Skill_Master where Skill_Type='L'");
while(rs.next())
     out.println("<Option>");
     out.println(rs.getString(3));
     out.println("</select></td>");
     rs1=stmt.executeQuery("select * from Skill_Master where Skill_Type='DB'");
     int k=rs1.getFetchSize();
System.out.println("Size DB " +k);
     out.println("<tr><td>EMPLOYEE NAME:</td><td> <input type=text name=Employee_Name></td><td></td><td>Database: </td>");
     out.println("<td><select name=skill2 size =2 multiple>");
     rs1.beforeFirst();
while(rs1.next())
     out.println("<Option>");
     out.println(rs1.getString(3));
     out.println("</select></td>");     
Hope this helps.
Best Luck!
Senthil Babu J