Skip to content

Update lesson_2__binding.md #19

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
sinisarudan wants to merge 1 commit into
base: master
Choose a base branch
from
Open

Update lesson_2__binding.md #19

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
16 changes: 8 additions & 8 deletions drools/lesson_2__binding.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -41,7 +41,7 @@ To be able to see what is happening in the rule engine, we shall add to the Know
public void afterMatchFired(AfterMatchFiredEvent event) {
System.out.println("The rule "
+ event.getMatch().getRule().getName()
+ " has be fired");
+ " has been fired");
}
public void agendaGroupPopped(AgendaGroupPoppedEvent event) {
}
Expand Down Expand Up @@ -74,13 +74,13 @@ public class CashFlow {
buff.append("-----CashFlow-----)\n");
buff.append("Account no=" + this.accountNo + "\n");
if (this.mvtDate != null) {
buff.append("Mouvement Date= "
buff.append("Movement Date= "
+ DateFormat.getDateInstance().format(this.mvtDate)
+ "\n");
} else {
buff.append("No Mouvement date was set\n");
buff.append("No Movement date was set\n");
}
buff.append("Mouvement Amount=" + this.amount + "\n");
buff.append("Movement Amount=" + this.amount + "\n");
buff.append("-----CashFlow end--)");
return buff.toString();
}
Expand Down Expand Up @@ -294,7 +294,7 @@ public class TestLesson2 {
}
```

In the TestTwoFacts test we insert an object of type Account and CashFlow mouvement of type credit. At the end, the balance should be 1000$. the console should look like this when running the test :
In the TestTwoFacts test we insert an object of type Account and CashFlow movement of type credit. At the end, the balance should be 1000$. the console should look like this when running the test :

![](../.gitbook/assets/lesson2_fig4.png)

Expand Down Expand Up @@ -334,7 +334,7 @@ Let us make now an example with a second CashFlow movement. Here is the test cas

When we run the test case, the test fails : ![](../.gitbook/assets/lesson2_fig6.png) and in the console, we see that the rule "Credit rule" is running twice :

![](../.gitbook/assets/lesson2_fig7.png) The rule was fired twice because there are 2 \(CashFlow,Account\) couples. The first CashFlow mouvement concerns account number 1 and the seconde account number 2. We need to find a way to link the two facts. We shall modify the rule like this :
![](../.gitbook/assets/lesson2_fig7.png) The rule was fired twice because there are 2 \(CashFlow,Account\) couples. The first CashFlow movement concerns account number 1 and the seconde account number 2. We need to find a way to link the two facts. We shall modify the rule like this :

```text
package droolscours
Expand All @@ -359,7 +359,7 @@ The rule above uses a binding variable. We create an attribute variable called $

![](../.gitbook/assets/lesson2_fig8.png)

![](../.gitbook/assets/lesson2_fig9.png) Now the rule "Credit Rule" is only fired once and the balance is corret.
![](../.gitbook/assets/lesson2_fig9.png) Now the rule "Credit Rule" is only fired once and the balance is correct.

## Calculating balance

Expand Down Expand Up @@ -399,7 +399,7 @@ rule "Debit rule"
end
```

In the rule above, we add a constraint so that the mvtDate of the CashFlow is between the startDate and endDate of the AccountinPeriod.
In the rule above, we add a constraint so that the mvtDate of the CashFlow is between the startDate and endDate of the AccountingPeriod.

and the test case

Expand Down