/*
 * Copyright (c) 2017, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package com.sun.s1asdev.jdbc.txlevelswitch.ejb;

import jakarta.ejb.*;
import javax.naming.*;
import javax.sql.*;
import java.rmi.*;
import java.util.*;
import java.sql.*;

public class SimpleSessionBean implements SessionBean
{

    private SessionContext ctxt_;
    private InitialContext ic_;
    public void setSessionContext(SessionContext context) {
        ctxt_ = context;
        try {
            ic_ = new InitialContext();
        } catch( NamingException ne ) {
            ne.printStackTrace();
        }
    }

    public void ejbCreate() throws CreateException {
    }

    /**
     * Get connection and do some database updates. Then throw
     * an exception before tx commits and ensure that the updates
     * did not happen
     */
    public boolean test1() throws Exception {
        DataSource ds = (DataSource)ic_.lookup("java:comp/env/DataSource");
        Connection conn1 = null;
        Statement stmt1 = null;
        ResultSet rs1 = null;
        int keyToCompare = 10;
        boolean passed = false;
        //clean the database
        try {
            conn1 = ds.getConnection();
            stmt1 = conn1.createStatement();
            stmt1.executeUpdate( "DELETE FROM TXLEVELSWITCH");
        } catch( SQLException e) {
            e.printStackTrace();
            return false;
        } finally {
            if (stmt1 != null) {
                try { stmt1.close(); } catch( Exception e1 ) {}
            }
            if (conn1 != null) {
                try { conn1.close(); } catch( Exception e1 ) {}
            }
        }

        try {
            //Call a method with tx=RequiresNew and have it throw
            //an exception
            updateDb( "TXLEVELSWITCH", keyToCompare );
        } catch( Exception e ) {
            if (!( e instanceof EJBException )) {
                e.printStackTrace();
                return false;
            } else {
                System.out.println("Caught expected EJBException");
            }
        }
        try {
            //since our updateDb threw an exception, we should not
            //find the inserted value here
            conn1 = ds.getConnection();
            stmt1 = conn1.createStatement();
            rs1 = stmt1.executeQuery("SELECT * FROM TXLEVELSWITCH");
            while( rs1.next() ) {
                int key = rs1.getInt("c_id");
                if ( key == 10 ) {
                    System.out.println("update happened successfully. It should have failed");
                    return false;
                }
            }
        } catch (Exception e) {
           e.printStackTrace();
           return false;
        } finally {
            if (rs1 != null ) {
                try { rs1.close(); } catch( Exception e1 ) {}
            }
            if ( stmt1 != null ) {
                try { stmt1.close(); } catch( Exception e1) {}
            }
            if ( conn1 != null ) {
                try { conn1.close(); } catch( Exception e1) {}
            }
        }

        return true;
    }

    private void updateDb( String table, int keyToInsert ) throws Exception {
        DataSource ds = (DataSource)ic_.lookup("java:comp/env/DataSource");
        Connection conn1 = null;
        Statement stmt1 = null;
        ResultSet rs1 = null;
        boolean passed = true;
        try {
            conn1 = ds.getConnection();
            stmt1 = conn1.createStatement();
            stmt1.executeUpdate("INSERT INTO " +table+" VALUES ("
                + keyToInsert+", 'ABCD')");
            throw new Exception("Rollback the tx");
        } catch( SQLException sqle ) {
            throw sqle;
        } catch (Exception e) {
           throw new EJBException( e );
        } finally {
            if (rs1 != null ) {
                try { rs1.close(); } catch( Exception e1 ) {}
            }
            if ( stmt1 != null ) {
                try { stmt1.close(); } catch( Exception e1) {}
            }
            if ( conn1 != null ) {
                try { conn1.close(); } catch( Exception e1) {}
            }
        }


    }
    /**
     * Get connection with two non-xa datasources.
     * Do some work using both. Should throw an
     * exception (that we catch ) since 2 non-xa
     * resources cannot be mixed. This test is run
     * after converting the 2 connection-pools to LocaTransaction
     * so by catching the exception we are asserting taht this
     * changeover is indeed successful
     */
    public boolean test2() throws Exception {
        System.out.println("************IN TEST 2*************");
        InitialContext ic = new InitialContext();
        DataSource ds1 = (DataSource)ic.lookup("java:comp/env/DataSource1");
        DataSource ds2 = (DataSource)ic.lookup("java:comp/env/DataSource2");
        Connection conn1 = null;
        Connection conn2 = null;
        Statement stmt1 = null;
        Statement stmt2 = null;
        ResultSet rs1 = null;
        ResultSet rs2 = null;
        boolean passed = true;
        try {
            System.out.println("Before getConnection 1");
            conn1 = ds1.getConnection();
            System.out.println("After getConnection 1");
            System.out.println("Before getConnection 2");
            conn2 = ds2.getConnection();
            System.out.println("After getConnection 2");

            System.out.println("Before createStatement 1");
            stmt1 = conn1.createStatement();
            System.out.println("After createStatement 1");
            System.out.println("Before createStatement 2");
            stmt2 = conn2.createStatement();
            System.out.println("After createStatement 2");

            System.out.println("executing statement 1");

            try {
                rs1 = stmt1.executeQuery("SELECT * FROM TXLEVELSWITCH");
            } catch( Exception e2 ) {
                System.out.println("Exception for first query :" + e2.getMessage() );
            } finally {
                passed = false;
            }

            System.out.println("executing statement 2");
            try {
                rs2 = stmt2.executeQuery("SELECT * FROM TXLEVELSWITCH2");
            } catch( Exception e2) {
                System.out.println("Exception for second query :" + e2.getMessage() );
            } finally {
                passed = false;
            }

            System.out.println("finished executing statements");
            passed = !(rs1.next() & rs2.next());
        } catch (Exception e) {
            passed = true;
            System.out.println("final exception : " + e.getMessage() );
            throw new EJBException(e);
        } finally {
            if (rs1 != null ) {
                try { rs1.close(); } catch( Exception e1 ) {}
            }

            if (rs2 != null ) {
                try { rs2.close(); } catch( Exception e1 ) {}
            }

            if ( stmt1 != null ) {
                try { stmt1.close(); } catch( Exception e1) {}
            }
            if ( stmt2 != null ) {
                try { stmt2.close(); } catch( Exception e1) {}
            }
            if ( conn1 != null ) {
                try { conn1.close(); } catch( Exception e1) {}
            }
            if ( conn2 != null ) {
                try { conn2.close(); } catch( Exception e1) {}
            }
        }
        return passed;
    }
    public void ejbLoad() {}
    public void ejbStore() {}
    public void ejbRemove() {}
    public void ejbActivate() {}
    public void ejbPassivate() {}
    public void unsetEntityContext() {}
    public void ejbPostCreate() {}
}