Execute While in SQl Script in Java

Question

i want to execute the SQL Script below, therefore i used ibatis Script Runner

Connection "con = DriverManager.getConnection("jdbc:odbc:Database")" 

ScriptRunner sr = new ScriptRunner(con, true, false);
// Give the input file to Reader
Reader reader = new BufferedReader(new FileReader(aSQLScriptFilePath));
// Execute script
sr.runScript(reader);

But there is the Problem, that While loops will not be completely executed. I pointed out that the problem comes because the Script Runner didn´t wait until he while loop is completely done. So there are only 386 and not 1000 rows created. I got the same Problem using the Java Statement execute method( http://docs.oracle.com/javase/6/docs/api/java/sql/Statement.html ):

 stmnt.execute("DECLARE @variable int = 1 WHILE (@variable<=1000) BEGIN INSERT INTO BatchTest2 SELECT @variable SET @variable=@variable+1 END" );

But if i set

Thread.sleep(5000);

behind stmnt.execute the while loop is completeley done and i get 1000 rows like i wanted. So my question is, if it is possible to execute the complete While loop whitout using Thread.sleep.?

Thank you in advance!

IF OBJECT_ID('test') IS NOT NULL
DROP TABLE test;

CREATE TABLE test(
spalte1 int PRIMARY KEY NOT NULL);

DECLARE @variable int = 1
WHILE (@variable<=1000)
BEGIN
INSERT INTO test
SELECT @variable
SET @variable=@variable+1
END 

Answer 1

You can refer to below example from MKYONG for same. Hope this helps you out.

    import java.io.BufferedReader;
import java.io.FileReader;
import java.io.Reader;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;

import com.ibatis.common.jdbc.ScriptRunner;

/**
 * 
 @author Dhinakaran Pragasam
 */
public class RunSqlScript {
    /**
     * @param args
     *            the command line arguments
     */
    public static void main(String[] args) throws ClassNotFoundException,
        SQLException {

        String aSQLScriptFilePath = "path/to/sql/script.sql";

        // Create MySql Connection
        Class.forName("com.mysql.jdbc.Driver");
        Connection con = DriverManager.getConnection(
            "jdbc:mysql://localhost:3306/database", "username", "password");
        Statement stmt = null;

        try {
            // Initialize object for ScripRunner
            ScriptRunner sr = new ScriptRunner(con, false, false);

            // Give the input file to Reader
            Reader reader = new BufferedReader(
                               new FileReader(aSQLScriptFilePath));

            // Exctute script
            sr.runScript(reader);

        } catch (Exception e) {
            System.err.println("Failed to Execute" + aSQLScriptFilePath
                    + " The error is " + e.getMessage());
        }
    }
}

Answer 2

Without having ScriptRunner at hand, a possible solution might be to use a procedure and then calling the procedure in the script.

Create Procedure insertData()
As
Begin
  DECLARE @variable int = 1
  WHILE (@variable<=1000)
  BEGIN
    INSERT INTO test
    SELECT @variable
    SET @variable=@variable+1
  END
End

IF OBJECT_ID('test') IS NOT NULL
  DROP TABLE test;

CREATE TABLE test(
  spalte1 int PRIMARY KEY NOT NULL);
EXEC insertData;