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Apr 28, 2020
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minor mods to part of ex3 #2

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12 changes: 6 additions & 6 deletions exercises/ex3/README.md
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Expand Up @@ -176,15 +176,15 @@ define view Z_I_BookingSupplement_U_XXX

## Exercise 3.2 Create the Business Object Behavior Definition and Implementation

After completing these steps you will have created the Behavior Definitionand Implementation for your Busines Object Views. The behavior definition defines what operations are possible for your Business Object.
After completing these steps you will have created the Behavior Definition and Implementation for your Business Object Views. The behavior definition defines what operations are possible for your Business Object.

1. Right-click on the Z_I_TRAVEL_U_XXX CDS Artifact and choose “New Behavior Defintion“.
<br>![](/exercises/ex3/images/03_02_0010.png)

2. Provide the default description, and change the Implementation Type to “Unmanaged”. Then click “Next”, then “Finish”.
<br>![](/exercises/ex3/images/03_02_0020.png)

3. You will then see the Behavior Defintion editor. You should see 3 seperate behavior definitions here, one for Travel, Bookings, and BookingSupplement.
3. You will then see the Behavior Defintion editor. You should see 3 separate behavior definitions here, one for Travel, Bookings, and BookingSupplement.
<br>![](/exercises/ex3/images/03_02_0030.png)

4. Let’s modify this definition. In this case, we don’t want a single implementation class for Travel, Booking, and BookingSupplement. Instead lets define the implementation classes specifically for each definition. First remove that from the first line so that it only contains the unmanaged key word.
Expand Down Expand Up @@ -221,7 +221,7 @@ action set_status_booked result [1] $self;
}

```
9. Next drop down the the second definition, the definition for Z_I_BOOKING_U_XXX. Add the follwing lines of code before the create keyword.
9. Next drop down to the second definition, the definition for Z_I_BOOKING_U_XXX. Add the following lines of code before the create keyword.
```abap
field ( read only ) TravelID, BookingID;
field ( mandatory ) BookingDate, CustomerID, AirlineID, ConnectionID, FlightDate;
Expand All @@ -230,7 +230,7 @@ action set_status_booked result [1] $self;
10. Now remove the create keyword, since we will handle the creation of bookings in association with the travel. So we only need the update and delete keywords.
<br>![](/exercises/ex3/images/03_02_0100.png)

11. After the delete keyword, add the following mapping statement.
11. After the association keyword, add the following mapping statement.
```abap
mapping for /dmo/booking
{
Expand All @@ -247,7 +247,7 @@ action set_status_booked result [1] $self;

```

12. Next, drop down tot he Z_I_BOOKINGSUPPLEMENT_XXX definition. Add the follwing lines of code before the create keyword.
12. Next, drop down to the Z_I_BOOKINGSUPPLEMENT_XXX definition. Add the following lines of code before the create keyword.
```abap
field ( read only ) TravelID, BookingID, BookingSupplementID;
field ( mandatory ) SupplementID, Price;
Expand Down Expand Up @@ -1898,4 +1898,4 @@ define service Z_SD_C_TRAVEL_U_XXX {

You've now created your Business Object data model, defined and implemented your Behaviors, created Projections over both, and exposed your data model as an OData service using the Unmanaged Scenario of the RESTful Programming Model

Continue to - [Exercise 4 - ABAP RESTful Programming Model - Managed ](../ex4/README.md)
Continue to - [Exercise 4 - ABAP RESTful Programming Model - Managed ](../ex4/README.md)