Examples of org.prevayler.Prevayler.execute()

org.prevayler.Prevayler.execute()
Executes the given Transaction on the prevalentSystem(). ALL operations that alter the observable state of the prevalentSystem() must be implemented as Transaction or TransactionWithQuery objects and must be executed using the Prevayler.execute() methods. This method synchronizes on the prevalentSystem() to execute the Transaction. It is therefore guaranteed that only one Transaction is executed at a time. This means the prevalentSystem() does not have to worry about concurrency issues among Transactions. Implementations of this interface can log the given Transaction for crash or shutdown recovery, for example, or execute it remotely on replicas of the prevalentSystem() for fault-tolerance and load-balancing purposes. @see org.prevayler.PrevaylerFactory

    
    public Object execute(PrevaylerCallback callback) {
        logger.debug("Executing callback into Prevayler.");
        try {
            Prevayler prevayler = this.configuration.getPrevaylerInstance();
            return prevayler.execute(new TransactionCommand(callback));
        } catch (Exception ex) {
            throw new PrevaylerTransactionException("Error while executing callback.", ex);
        }
    }

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    public void testSimplePersistence() throws Exception {


        Prevayler prevaylerToSave = PrevaylerFactory.createPrevayler(new PrevalentSystem(), dataDirectory);
        
        AddCourse addCourse = new AddCourse("1","Photoshop","100","10", 5, false);
        prevaylerToSave.execute(addCourse);
        
        String fName = "AAA";
        AddAndReturnStudent addStudent = new AddAndReturnStudent((String) GDSystem.getInstance().query(new GetPersonID()), "milhouse", fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, null, new ArrayList<Occurrence>());
        prevaylerToSave.execute(addStudent);

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        AddCourse addCourse = new AddCourse("1","Photoshop","100","10", 5, false);
        prevaylerToSave.execute(addCourse);
        
        String fName = "AAA";
        AddAndReturnStudent addStudent = new AddAndReturnStudent((String) GDSystem.getInstance().query(new GetPersonID()), "milhouse", fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, null, new ArrayList<Occurrence>());
        prevaylerToSave.execute(addStudent);
        
        AddAndReturnEmployee addEmployee = new AddAndReturnEmployee((String) GDSystem.getInstance().query(new GetPersonID()), "Havaiana", fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, null, fName, fName, fName, fName, fName, null, fName, fName, null, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName);
        prevaylerToSave.execute(addEmployee);
        
        List <String> groups = new ArrayList <String> ();

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        String fName = "AAA";
        AddAndReturnStudent addStudent = new AddAndReturnStudent((String) GDSystem.getInstance().query(new GetPersonID()), "milhouse", fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, null, new ArrayList<Occurrence>());
        prevaylerToSave.execute(addStudent);
        
        AddAndReturnEmployee addEmployee = new AddAndReturnEmployee((String) GDSystem.getInstance().query(new GetPersonID()), "Havaiana", fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, null, fName, fName, fName, fName, fName, null, fName, fName, null, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName, fName);
        prevaylerToSave.execute(addEmployee);
        
        List <String> groups = new ArrayList <String> ();
        groups.add("Administrador");
        
        Map <String, String> computers = new HashMap <String, String> ();

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        List <String> groups = new ArrayList <String> ();
        groups.add("Administrador");
        
        Map <String, String> computers = new HashMap <String, String> ();
        Map <String, Map<String, String>> schedule = new HashMap <String, Map<String, String>> ();
        prevaylerToSave.execute(new AddAndEditClassRoom("01", "sala1", computers, schedule));
        
        prevaylerToSave = null;
        
        Prevayler prevaylerToRead = PrevaylerFactory.createPrevayler(new PrevalentSystem(), dataDirectory);

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        prevaylerToSave = null;
        
        Prevayler prevaylerToRead = PrevaylerFactory.createPrevayler(new PrevalentSystem(), dataDirectory);
        
        Person person3 = (Person) prevaylerToRead.execute(new GetStudent("milhouse"));
        assertEquals("milhouse", person3.getName());
        
        ClassRoom classRoom = (ClassRoom) prevaylerToRead.execute(new GetClassRoom("sala1"));
        assertEquals("sala1", classRoom.getClassRoomName());

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        Prevayler prevaylerToRead = PrevaylerFactory.createPrevayler(new PrevalentSystem(), dataDirectory);
        
        Person person3 = (Person) prevaylerToRead.execute(new GetStudent("milhouse"));
        assertEquals("milhouse", person3.getName());
        
        ClassRoom classRoom = (ClassRoom) prevaylerToRead.execute(new GetClassRoom("sala1"));
        assertEquals("sala1", classRoom.getClassRoomName());
        
        Person person4 = (Person) prevaylerToRead.execute(new GetEmployee("Havaiana"));
        assertEquals("Havaiana", person4.getName());

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        assertEquals("milhouse", person3.getName());
        
        ClassRoom classRoom = (ClassRoom) prevaylerToRead.execute(new GetClassRoom("sala1"));
        assertEquals("sala1", classRoom.getClassRoomName());
        
        Person person4 = (Person) prevaylerToRead.execute(new GetEmployee("Havaiana"));
        assertEquals("Havaiana", person4.getName());
        
        
        course = (Course) prevaylerToRead.execute(new GetCourse("Photoshop")); 
        assertEquals("100",String.valueOf(course.getValue()));

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        Person person4 = (Person) prevaylerToRead.execute(new GetEmployee("Havaiana"));
        assertEquals("Havaiana", person4.getName());
        
        
        course = (Course) prevaylerToRead.execute(new GetCourse("Photoshop")); 
        assertEquals("100",String.valueOf(course.getValue()));        
        
    }


}

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    public void testAll() throws Exception{     
        
        Prevayler prevaylerToSave = PrevaylerFactory.createPrevayler(new PrevalentSystem(), dataDirectory);
        
        AddCourse addCourse = new AddCourse("1","Photoshop","100","10",5,true);        
        prevaylerToSave.execute(addCourse);
        
        prevaylerToSave = null;
        
        prevaylerToRead = PrevaylerFactory.createPrevayler(new PrevalentSystem(), dataDirectory);        
        course = (Course) prevaylerToRead.execute(new GetCourse("Photoshop"));

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