Pointbase : How can I create a stored procedure with Pointbase database?

Question

Hello,
Excuse me for my english, I'm not anglophone. I try to create a stored procedure.
This is my file SampleExternalMethods.java :
  import java.sql.*;    //import com.pointbase.jdbc.jdbcInOutDoubleWrapper;          public class SampleExternalMethods    {      // A connection object to allow database callback      static Connection conn = null;      static Statement l_stmt;      static Statement m_stmt;      static CallableStatement m_callStmt = null;      static ResultSet l_rs = null;          public static void main(String[] args)      {        try        {          String url = "jdbc:pointbase:server://localhost/pointbaseDB";          String username = "PBPUBLIC";          String password = "PBPUBLIC";          conn = DriverManager.getConnection(url, username, password);          doCreateProcedure();          doInvokeProcedure();        } catch (SQLException e) {          e.printStackTrace();        } finally {          if (m_stmt != null) {            try {              m_stmt.close();            } catch (Exception e) {              e.printStackTrace();            }          }          if (m_callStmt != null) {            try {              m_callStmt.close();            } catch (Exception e) {              e.printStackTrace();            }          }          if (conn != null) {            try {              conn.close();            } catch (Exception e) {              e.printStackTrace();            }          }        }      }                  public static void getCountry(String Iso_Code)      {        try        {          // Query the database for the country iso code          l_stmt = conn.createStatement();          l_rs = l_stmt.executeQuery( "SELECT * FROM countries"          + " WHERE country_iso_code ='" + Iso_Code + "'");          //Affichage du résultat de la requête          l_rs.next();          System.out.print(l_rs.getString(1) + " - ");          System.out.print(l_rs.getString(2) + " - ");          System.out.println(l_rs.getString(3));          // Close the result set          l_rs.close();        } catch (SQLException e) {          e.printStackTrace();        } finally {          if (l_rs != null) {            try {              l_rs.close();            } catch (Exception e) {              e.printStackTrace();            }          }          if (l_stmt != null) {            try {              l_stmt.close();            } catch (Exception e) {              e.printStackTrace();            }          }        }      }            public static void doCreateProcedure() throws SQLException {        // SQL statement to create a stored procedure        String SQL_CREATE_PROC = "CREATE PROCEDURE getCountry(IN P1 VARCHAR(30))"        + " LANGUAGE JAVA"        + " SPECIFIC getCountry"        + " NO SQL"        + " EXTERNAL NAME \"SampleExternalMethods::getCountry\""        + " PARAMETER STYLE SQL";        // Create a SQL statement        m_stmt = conn.createStatement();        // Execute the SQL        m_stmt.executeUpdate(SQL_CREATE_PROC);        // Close the statement        //m_stmt.close();      }          public static void doInvokeProcedure() throws SQLException {        // Create SQL to invoke stored procedures        String SQL_USE_PROC = "{ call getCountry(?) }";        // Create a callable statement with three binding parameters        m_callStmt = conn.prepareCall(SQL_USE_PROC);        m_callStmt.setString(1, "CA");        m_callStmt.executeQuery();        // Close the callable statement        //m_callStmt.close();      }    } 
Afterwards, I have read this note in a Pointbase document:
To invoke the dateConvert external Java method from a stored function, you must use the
CREATE FUNCTION statement. The dateConvert external Java method is called from the
class, SampleExternalMethods.
In order for the database to access this external Java method, the class SampleExternalMethods
must be included in the database CLASSPATH. For PointBase Embedded - Server Option, it
must be in the Server CLASSPATH, but not in the Client CLASSPATH.
If PointBase Server is run with the Java Security Manager, in the java policy file grant
’com.pointbase.sp.spPermission’ to the class that implements the external Java method.
An "spPermission" consists of a class name with no action. The class name is a name of a class
that could be used in creating a Stored Procedure in PointBase. The naming convention follows
the hierarchical property naming convention and that is supported by
"java.security.BasicPermission". An asterisk may appear by itself, or if immediately preceded
by ".", may appear at the end of the name, to signify a wildcard match. The name cannot
contain any white spaces.
I'm not sure, but I suppose that I must include the class SampleExternalMethods in a .jar file.
The database CLASSPATH could be : C:\Sun\AppServer\pointbase\lib\
These my files in this database CLASSPATH:
pbclient.jar
pbembedded.jar
pbtools.jar
pbupgrade.jar
I have tryed to include the class SampleExternalMethods in pbclient.jar and pbembedded.jar with this command:
jar -uf pbembedded.jar SampleExternalMethods
Afterwards I do that,
1) Start Pointbase
2) Configuration of classpath
set classpath=C:\Sun\AppServer\pointbase\lib\pbclient.jar
set classpath=%classpath%;D:\J2EE\Ch07Code\Ch07_06
I precise that my file SampleExternalMethods is into D:\J2EE\Ch07Code\Ch07_06\Ch07.
Then, I run the program:
D:\J2EE\Ch07Code\Ch07_06>java -Djdbc.drivers=com.pointbase.jdbc.jdbcUniversalDriver Ch07.SampleExternalMethods
But I have an error message:
Exception in thread "main" java.lang.NoClassDefFoundError: Ch07.SampleExternalMethods (wrong name: SampleExternalMethods)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.DefineClass(ClassLoader.java:539)
The problem, I suppose, comes from that the class SampleExternalMethods
must be included in the database CLASSPATH, but there is a pbserver.jar with pointbase normally, but I didn't find it. That's why I use pbembedded.jar or pbclient.jar in order to include the class SampleExternalMethods. May be I must start from C:\Sun\AppServer\pointbase\lib\ instead of D:\J2EE\Ch07Code\Ch07_06\Ch07?
Please, can somebody helps me?
Thank you in advance.
cagou!

Answer 1

jschell wrote:
And I doubt you can recurse like that for embedded java. You must have a class that does the functionality and another class that creates the proc.
>And I doubt you can recurse like that for embedded java. You must have a class that does the functionality and another class that creates the proc.
>
And I doubt you can recurse like that for embedded java. You must have a class that does the functionality and another class that creates the proc.
Thank you for your response, I have done two classes:
SampleExternalMethods.java:
package Ch07;
import java.sql.*;*
*public class SampleExternalMethods*
*public static void getCountry(String Iso_Code)*
*// A connection object to allow database callback*
*Connection l_conn = null;*
*Statement l_stmt = null;*
*ResultSet l_rs = null;*
*try*
*String url = "jdbc:pointbase:server://localhost/pointbaseDB";*
*String username = "PBPUBLIC";*
*String password = "PBPUBLIC";*
*l_conn = DriverManager.getConnection(url, username, password);*
*// Query the database for the country iso code*
*l_stmt = l_conn.createStatement();*
*l_rs = l_stmt.executeQuery( "SELECT* FROM PBPUBLIC.COUNTRIES"
+" WHERE country_iso_code ='"+ Iso_Code +"'");+
+//Affichage du résultat de la requête+
+l_rs.next();+
+System.out.print(l_rs.getString(1)+ " - ");
System.out.print(l_rs.getString(2) +" - ");+
+System.out.println(l_rs.getString(3));+
+// Close the result set+
+l_rs.close();+
+} catch (SQLException e) {+
+e.printStackTrace();+
+} finally {+
+if (l_rs != null) {+
+try {+
+l_rs.close();+
+} catch (Exception e) {+
+e.printStackTrace();+
+}+
+}+
+if (l_stmt != null) {+
+try {+
+l_stmt.close();+
+} catch (Exception e) {+
+e.printStackTrace();+
+}+
+}+
+if (l_conn != null) {+
+try {+
+l_conn.close();+
+} catch (Exception e) {+
+e.printStackTrace();+
+}+
+}+
+}+
+}+
+}+
CreateMethods.java:
+package Ch07;+
+import java.sql.*;+
+public class CreateMethods+
+{+
+// A connection object to allow database callback+
+static Connection m_conn = null;+
+static Statement m_stmt;+
+static CallableStatement m_callStmt = null;+
+public static void main(String[] args)+
+{+
+try+
+{+
+String url = "jdbc:pointbase:server://localhost/pointbaseDB";+
+String username = "PBPUBLIC";+
+String password = "PBPUBLIC";+
+m_conn = DriverManager.getConnection(url, username, password);+
+doCreateProcedure();+
+doInvokeProcedure();+
+} catch (SQLException e) {+
+e.printStackTrace();+
+} finally {+
+if (m_stmt != null) {+
+try {+
+m_stmt.close();+
+} catch (Exception e) {+
+e.printStackTrace();+
+}+
+}+
+if (m_callStmt != null) {+
+try {+
+m_callStmt.close();+
+} catch (Exception e) {+
+e.printStackTrace();+
+}+
+}+
+if (m_conn != null) {+
+try {+
+m_conn.close();+
+} catch (Exception e) {+
+e.printStackTrace();+
+}+
+}+
+}+
+}+
+public static void doCreateProcedure() throws SQLException {+
+// SQL statement to create a stored procedure+
+String SQL_CREATE_PROC = "CREATE PROCEDURE PBPUBLIC.getCountry(IN P1 VARCHAR(30))"+
" LANGUAGE JAVA"
+" SPECIFIC getCountry"+
" NO SQL"
+" EXTERNAL NAME \"SampleExternalMethods::getCountry\""+
" PARAMETER STYLE SQL";
// Create a SQL statement
m_stmt = m_conn.createStatement();
// Execute the SQL
m_stmt.executeUpdate(SQL_CREATE_PROC);
// Close the statement
//m_stmt.close();
public static void doInvokeProcedure() throws SQLException {
// Create SQL to invoke stored procedures
String SQL_USE_PROC = "{ call getCountry(?) }";
// Create a callable statement with three binding parameters
m_callStmt = m_conn.prepareCall(SQL_USE_PROC);
m_callStmt.setString(2, "CA");
m_callStmt.executeQuery();
// Close the callable statement
//m_callStmt.close();
}But I have the same error message that previously.
I have read this note and I suppose that the problem is linked:
If PointBase Server is run with the Java Security Manager, in the java policy file grant
*’com.pointbase.sp.spPermission’ to the class that implements the external Java method.*
An "spPermission" consists of a class name with no action. The class name is a name of a class
that could be used in creating a Stored Procedure in PointBase. The naming convention follows
the hierarchical property naming convention and that is supported by
*"java.security.BasicPermission". An asterisk may appear by itself, or if immediately preceded*
by ".", may appear at the end of the name, to signify a wildcard match. The name cannot
contain any white spaces.
Can you explain me what I must to do in order to solve this problem of spPermission.
Thanks.