# org.omg.Dynamic

***

**1. Obtaining a Reference to the Invocation Object**

```java
import org.omg.CORBA.ORB;
import org.omg.CORBA.Object;
import org.omg.CORBA.DynamicImplementation;
import org.omg.Dynamic.Parameter;

public class DynamicMethodInvocation {

    public static void main(String[] args) {
        // Initialize the ORB
        ORB orb = ORB.init(args, null);

        // Get a reference to the target object
        Object obj = orb.string_to_object("giop:iiop:1.2@host:port/obj");

        // Obtain a reference to the DynamicImplementation
        DynamicImplementation di = orb.create_dynamic(obj);

        // Obtain a reference to the invocation object
        org.omg.Dynamic.Method method = di.lookup("sayHello");
    }
}
```

**2. Setting Arguments and Invoking the Method**

```java
import org.omg.CORBA.ORB;
import org.omg.CORBA.Object;
import org.omg.CORBA.DynamicImplementation;
import org.omg.Dynamic.Parameter;
import org.omg.Dynamic.NamedValue;

public class DynamicMethodInvocation {

    public static void main(String[] args) {
        // Initialize the ORB
        ORB orb = ORB.init(args, null);

        // Get a reference to the target object
        Object obj = orb.string_to_object("giop:iiop:1.2@host:port/obj");

        // Obtain a reference to the DynamicImplementation
        DynamicImplementation di = orb.create_dynamic(obj);

        // Obtain a reference to the invocation object
        org.omg.Dynamic.Method method = di.lookup("sayHello");

        // Set the arguments
        Parameter[] params = method.parameters();
        params[0].assign(new NamedValue("name", "John"));

        // Invoke the method
        method.invoke();
    }
}
```

**3. Obtaining the Return Value**

```java
import org.omg.CORBA.ORB;
import org.omg.CORBA.Object;
import org.omg.CORBA.DynamicImplementation;
import org.omg.Dynamic.Parameter;
import org.omg.Dynamic.NamedValue;

public class DynamicMethodInvocation {

    public static void main(String[] args) {
        // Initialize the ORB
        ORB orb = ORB.init(args, null);

        // Get a reference to the target object
        Object obj = orb.string_to_object("giop:iiop:1.2@host:port/obj");

        // Obtain a reference to the DynamicImplementation
        DynamicImplementation di = orb.create_dynamic(obj);

        // Obtain a reference to the invocation object
        org.omg.Dynamic.Method method = di.lookup("sayHello");

        // Set the arguments
        Parameter[] params = method.parameters();
        params[0].assign(new NamedValue("name", "John"));

        // Invoke the method
        method.invoke();

        // Get the return value
        NamedValue result = method.get_return();
        System.out.println("Return value: " + result.value.extract_string());
    }
}
```

**4. Creating a Dynamic Object**

```java
import org.omg.CORBA.ORB;
import org.omg.CORBA.Object;
import org.omg.Dynamic.Parameter;
import org.omg.Dynamic.Type;
import org.omg.Dynamic.NameValuePair;

public class DynamicObjectCreation {

    public static void main(String[] args) {
        // Initialize the ORB
        ORB orb = ORB.init(args, null);

        // Create a repository id
        String id = "IDL:org.example:1.0";

        // Create a list of properties for the object
        NameValuePair[] properties = {
            new NameValuePair("name", "John"),
            new NameValuePair("age", 30)
        };

        // Create a dynamic object
        Object object = orb.create_dynamic(id, properties);
    }
}
```

**5. Adding and Removing Attributes**

```java
import org.omg.CORBA.ORB;
import org.omg.CORBA.Object;
import org.omg.CORBA.Any;
import org.omg.Dynamic.Parameter;
import org.omg.Dynamic.Type;
import org.omg.Dynamic.NameValuePair;

public class DynamicObjectManipulation {

    public static void main(String[] args) {
        // Initialize the ORB
        ORB orb = ORB.init(args, null);

        // Create a dynamic object
        Object object = orb.create_dynamic("IDL:org.example:1.0", null);

        // Get the type of the object
        Type type = object.get_type();

        // Add an attribute to the object
        Parameter attribute = type.add_attribute("lastName", orb.create_string_tc());
        attribute.assign(new Any("Smith"));

        // Remove an attribute from the object
        type.remove_attribute("lastName");
    }
}
```

**6. Adding and Removing Operations**

```java
import org.omg.CORBA.ORB;
import org.omg.CORBA.Object;
import org.omg.Dynamic.Parameter;
import org.omg.Dynamic.Type;
import org.omg.Dynamic.NameValuePair;

public class DynamicObjectManipulation {

    public static void main(String[] args) {
        // Initialize the ORB
        ORB orb = ORB.init(args, null);

        // Create a dynamic object
        Object object = orb.create_dynamic("IDL:org.example:1.0", null);

        // Get the type of the object
        Type type = object.get_type();

        // Add an operation to the object
        Parameter[] parameters = {
            new Parameter("name", orb.create_string_tc()),
            new Parameter("age", orb.create_long_tc())
        };
        Parameter result = new Parameter("result", orb.create_string_tc());
        Type operationType = orb.create_operation_tc("greet", parameters, result);
        type.add_operation("greet", operationType);

        // Remove an operation from the object
        type.remove_operation("greet");
    }
}
```

**7. Cloning a Dynamic Object**

```java
import org.omg.CORBA.ORB;
import org.omg.CORBA.Object;

public class DynamicObjectCloning {

    public static void main(String[] args) {
        // Initialize the ORB
        ORB orb = ORB.init(args, null);

        // Create a dynamic object
        Object object1 = orb.create_dynamic("IDL:org.example:1.0", null);

        // Clone the dynamic object
        Object object2 = object1.clone();
    }
}
```

**8. Introspecting a Dynamic Object**

```java
import org.omg.CORBA.ORB;
import org.omg.CORBA.Object;
import org.omg.Dynamic.Parameter;
import org.omg.Dynamic.Type;
import org.omg.Dynamic.NameValuePair;

public class DynamicIntrospection {

    public static void main(String[] args) {
        // Initialize the ORB
        ORB orb = ORB.init(args, null);

        // Create a dynamic object
        Object object = orb.create_dynamic("IDL:org.example:1.0", null);

        // Get the type of the object
        Type type = object.get_type();

        // Iterate over the attributes of the object
        for (int i = 0; i < type.attribute_count(); i++) {
            Parameter attribute = type.attribute(i);
            System.out.println("Attribute: " + attribute.name());
        }

        // Iterate over the operations of the object
        for (int i = 0; i < type.operation_count(); i++) {
            Parameter operation = type.operation(i);
            System.out.println("Operation: " + operation.name());
        }
    }
}
```

**9. Dynamic Invocation of a Remote Method**

```java
import org.omg.CORBA.ORB;
import org.omg.CORBA.Object;
import org.omg.CORBA.Any;
import org.omg.Dynamic.Parameter;
import org.omg.Dynamic.Type;

public class DynamicInvocation {

    public static void main(String[] args) {
        // Initialize the ORB
        ORB orb = ORB.init(args, null);

        // Get a reference to the target object
        Object object = orb.string_to_object("giop:iiop:1.2@host:port/obj");

        // Obtain a reference to the DynamicImplementation
        DynamicImplementation di = orb.create_dynamic(object);

        // Obtain a reference to the invocation object
        org.omg.Dynamic.Method method = di.lookup("sayHello");

        // Set the arguments
        Parameter[] params = method.parameters();
        params[0].assign(new Any("John"));

        // Invoke the method
        Any result = method.invoke();

        // Print the result
        System.out.println("Return value: " + result.extract_string());
    }
}
```

**10. Dynamic Invocation of a Local Method**

```java
import org.omg.CORBA.ORB;
import org.omg.CORBA.Object;
import org.omg.CORBA.Any;
import org.omg.Dynamic.Parameter;
import org.omg.Dynamic.Type;

public class DynamicInvocation {

    public static void main(String[] args) {
        // Initialize the ORB
        ORB orb = ORB.init(args, null);

        // Create a local object
        Object object = new MyObject();

        // Obtain a reference to the DynamicImplementation
        DynamicImplementation di = orb.create_dynamic(object);

        // Obtain a reference to the invocation object
        org.omg.Dynamic.Method method = di.lookup("sayHello");

        // Set the arguments
        Parameter[] params = method.parameters();
        params[0].assign(new Any("John"));

        // Invoke the method
        Any result = method.invoke();

        // Print the result
        System.out.println("Return value: " + result.extract_string());
    }

    public static class MyObject {

        public String sayHello(String name) {
            return "Hello, " + name + "!";
        }
    }
}
```

**11. Dynamic Invocation of a Method with Multiple Arguments**

```java
import org.omg.CORBA.ORB;
import org.omg.CORBA.Object;
import org.omg.CORBA.Any;
import org.omg.Dynamic.Parameter;
import org.omg.Dynamic.Type;

public class DynamicInvocation {

    public static void main(String[] args) {
        // Initialize the ORB
        ORB orb = ORB.init(args, null);

        // Get a reference to the target object
        Object object = orb.string_to_object("giop:iiop:1.2@host:port/obj");

        // Obtain a reference to the DynamicImplementation
        DynamicImplementation di = orb.create_dynamic(object);

        // Obtain a reference to the invocation object
        org.omg.Dynamic.Method method = di.lookup("addNumbers");

        // Set the arguments
        Parameter[] params = method.parameters();
        params[0].assign(new Any(10));
        params[1].assign(new Any(20));

        // Invoke the method
        Any result = method.invoke();

        // Print the result
        System.out.println("Return value: " + result.extract_long());
    }
}
```

**12. Dynamic Invocation of a Method with a Return Value**

```java
import org.omg.CORBA.ORB;
import org.omg.CORBA.Object;
import org.omg.CORBA.Any;
import org.omg.Dynamic.Parameter;
import org.omg.Dynamic.Type;

public class DynamicInvocation {

    public static void main(String[] args) {
        // Initialize the ORB
        ORB orb = ORB.init(args, null);

        // Get a reference to the target object
        Object object = orb.string_to_object("giop:iiop:1.2@host:port/obj");

        // Obtain a reference to the DynamicImplementation
        DynamicImplementation di = orb.create_dynamic(object);

        // Obtain a reference to the invocation object
        org.omg.Dynamic.Method method = di.lookup("getFullName");

        // Set the arguments
        Parameter[] params = method.parameters();
        params[0].assign(new Any("John"));
        params[1].assign(new Any("Smith"));

        // Invoke the method
        Any result = method.invoke();

        // Print the result
        System.out.println("Return value: " + result.extract_string());
    }
}
```

**13. Dynamic Invocation of a Method with an Array Argument**

```java
import org.omg.CORBA.ORB;
import org.omg.CORBA.Object;
import org.omg.CORBA.Any;
import org.omg.Dynamic.Parameter;
import org.omg.Dynamic.Type;

public class DynamicInvocation {

    public static void main(String[] args) {
        // Initialize the ORB
        ORB orb = ORB.init(args, null);

        // Get a reference to the target object
        Object object = orb.string_to_object("giop:iiop:1.2@host:port/obj");

        // Obtain a reference to the DynamicImplementation
        DynamicImplementation di = orb.create_dynamic(object);

        // Obtain a reference to the invocation object
        org.omg.Dynamic.Method method = di.lookup("getAverage");

        // Set the arguments
        Parameter[] params = method.parameters();
        Any[] numbers = new Any[3];
        numbers[0] = new Any(10);
        numbers[1] = new Any(20);
        numbers[2] = new Any(30);
        params[0].assign(new Any(numbers));

        // Invoke the method
        Any result = method.invoke();

        // Print the result
        System.out.println("Return value: " + result.extract_float());
    }
}
```

**14. Dynamic Invocation of a Method with a Struct Argument**

```java
import org.omg.CORBA.ORB;
import org.omg.CORBA.Object;
import org.omg.CORBA.Any;
import org.omg.Dynamic.Parameter;
import org.omg.Dynamic.Type;
import org.omg.Dynamic.NameValuePair;

public class DynamicInvocation {

    public static void main(String[] args) {
        // Initialize the ORB
        ORB orb = ORB.init(args, null);

        // Get a reference to the target object
        Object object = orb.string_to_object("giop:iiop:1.2@host:port/obj");

        // Obtain a reference to the DynamicImplementation
        DynamicImplementation di = orb.create_dynamic(object);

        // Obtain a reference to the invocation object
        org.omg.Dynamic.Method method = di.lookup("getPerson");

        // Set the arguments
        Parameter[] params = method.parameters();
        Any[] person = new Any[2];
        person[0] = new Any("John");
        person[1] = new Any(30);
        params[0].assign(new Any(person));

        // Invoke the method
        Any result = method.invoke();

        // Print the result
        NameValuePair[] resultFields = result.extract_NameValuePair();
        System.out.println("Name: " + resultFields[0].value.extract_string());
        System.out.println("Age: " + resultFields[1].value.extract_long());
    }
}
```

**15. Dynamic Invocation of a Method with an Union Argument**

```java
import org.omg.CORBA.ORB;
import org.omg.CORBA.Object;
import org.omg.CORBA.Any;
import org.omg.Dynamic.Parameter;
import org.omg.Dynamic.Type;
import org.omg.Dynamic.NameValuePair;

public class DynamicInvocation {

    public static void main(String[] args) {
        // Initialize the ORB
        ORB orb = ORB.init(args, null);

        // Get a reference to the target object
        Object object = orb.string_to_object("giop:iiop:1.2@host:port/obj");

        // Obtain a reference to the DynamicImplementation
        DynamicImplementation

```