├── HANDS ON EVENT SOURCING & CQRS.odp
├── .gitignore
└── README.md


/HANDS ON EVENT SOURCING & CQRS.odp:
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https://raw.githubusercontent.com/ylegat/workshop-event-sourcing/HEAD/HANDS ON EVENT SOURCING & CQRS.odp


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/.gitignore:
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 1 | *.class
 2 | 
 3 | # Mobile Tools for Java (J2ME)
 4 | .mtj.tmp/
 5 | 
 6 | # Package Files #
 7 | *.jar
 8 | *.war
 9 | *.ear
10 | 
11 | # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
12 | hs_err_pid*
13 | 
14 | .idea/
15 | target/
16 | *.iml


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/README.md:
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 1 | **step 1: simple command**
 2 | 
 3 | ```
 4 | git merge --no-edit origin/step1/exercise/simple-command
 5 | ```
 6 | 
 7 | We want to implement the 3 basic commands that can be applied on a bank account: registration (creation),  provisioning and withdraw
 8 | 
 9 | 1. implement account registration command
10 |  * write BankAccount_registerBankAccountTest.should_register_bank_account_with_success test and make it pass
11 |  * write BankAccount_registerBankAccountTest.should_fail_registering_bank_account_with_already_used_id and make it pass
12 | 2. implement provisioning command, using BankAccount_provisionCreditTest as a guideline
13 | 3. implement withdraw command, using BankAccount_withdrawCreditTest as a guideline
14 | 
15 | 
16 | **step 2: long running process**
17 | 
18 | * if you managed to make all the tests pass:
19 | ```
20 | git add .
21 | git commit -m "solution"
22 | git merge --no-edit origin/step2/exercise/long-running-process
23 | ```
24 | 
25 | * if you want to continue from a clean solution
26 | ```
27 | git add .
28 | git reset --hard origin/master
29 | git merge --no-edit origin/step1/solution/simple-command
30 | git merge --no-edit origin/step2/exercise/long-running-process
31 | ```
32 | 
33 | A transfer is a long running process: an operation that is decomposed into multiple simple commands, orchestrated by a process manager.
34 | The process manager dedicated to a transfer is named TransferProcessManager.
35 | 
36 | Commands related to this operation are: request transfer, receive transfer, cancel transfer and complete transfer
37 | All commands have already been implemented except the first one.
38 | 
39 | 1. implement the transfer process manager
40 |  * write TransferProcessManagerTest.should_cancel_transfer_when_destination_does_not_exist test and make it pass
41 |  * write TransferProcessManagerTest.should_complete_transfer_when_destination_exist test and make it pass
42 | 
43 | 
44 | **step 3: projection**
45 | 
46 | * if you managed to make all the tests pass:
47 | ```
48 | git add .
49 | git commit -m "solution"
50 | git merge --no-edit origin/step3/exercise/projection
51 | ```
52 | 
53 | * if you want to continue from a clean solution
54 | ```
55 | git add .
56 | git reset --hard origin/master
57 | git merge --no-edit origin/step2/solution/long-running-process
58 | git merge --no-edit origin/step3/exercise/projection
59 | ```
60 | 
61 | We need a read model containing the total balance of the accounts.
62 | For this, we use a in memory repository named InMemoryBalanceRepository (already implemented)
63 | 
64 | We need to implement the projection manager, BalanceProjectionManager, that will be notified when an event is saved so that it can update the total balances using the repository.
65 | 
66 | 1. implement the credit balance projection manager
67 |  * make the tests defined in BalanceProjectionManagerTest pass
68 | 
69 | 
70 | **step 4 (optional): create a projection of your own**
71 | 


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