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Ilkka Seppälä 2020-08-11 17:25:38 +03:00
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transaction-script/README.md
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@ -16,10 +16,12 @@ request from the presentation.
## Explanation ## Explanation
Real world example Real world example
> You need to create a hotel room booking system. Since the requirements are quite simple we intend > You need to create a hotel room booking system. Since the requirements are quite simple we intend
> to use the Transaction Script pattern here. > to use the Transaction Script pattern here.
In plain words In plain words
> Transaction Script organizes business logic into transactions that the system needs to carry out. > Transaction Script organizes business logic into transactions that the system needs to carry out.
Programmatic example Programmatic example
@ -80,15 +82,9 @@ The `Hotel` class has two methods, one for booking and cancelling a room respect
them handles a single transaction in the system, making `Hotel` implement the Transaction Script them handles a single transaction in the system, making `Hotel` implement the Transaction Script
pattern. pattern.
```
public void bookRoom(int roomNumber);
```
The `bookRoom` method consolidates all the needed steps like checking if the room is already booked The `bookRoom` method consolidates all the needed steps like checking if the room is already booked
or not, if not booked then books the room and updates the database by using the DAO. or not, if not booked then books the room and updates the database by using the DAO.
```
public void cancelRoomBooking(int roomNumber)
```
The `cancelRoom` method consolidates steps like checking if the room is booked or not, The `cancelRoom` method consolidates steps like checking if the room is booked or not,
if booked then calculates the refund amount and updates the database using the DAO. if booked then calculates the refund amount and updates the database using the DAO.