christoph/lecture-professional-software-development
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refactor aggregate build process

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Christoph
2020-03-09 13:25:38 +01:00
parent 94193d4f50
commit af4a12c892
3 changed files with 17 additions and 9 deletions
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11
src/main/java/mops/gruppen2/domain/Aggregate.java
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@ -4,6 +4,7 @@ import lombok.Getter;
import mops.gruppen2.domain.event.Event;
import java.lang.reflect.Method;
import java.util.List;
/**
* Repräsentiert viele Events als aggregiertes Objekt.
@ -13,12 +14,20 @@ public abstract class Aggregate {
protected long id;
public void apply(List<Event> events) {
events.forEach(this::applyEvent);
}
public void apply(Event event) {
applyEvent(event);
}
/**
* Ruft die spezifische applyEvent-Methode im entsprechenden Aggregat auf.
*
* @param event Event, welches aggregiert wird
*/
public void applyEvent(Event event) {
private void applyEvent(Event event) {
try {
Method method = this.getClass().getDeclaredMethod("applyEvent", event.getClass());
method.setAccessible(true);

3
src/main/java/mops/gruppen2/service/GroupService.java
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@ -18,8 +18,7 @@ public class GroupService {
*/
Group buildGroupFromEvents(List<Event> eventList) {
Group newGroup = new Group();
eventList.forEach(newGroup::applyEvent);
newGroup.apply(eventList);
return newGroup;
}

12
src/test/java/mops/gruppen2/domain/GroupTest.java
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@ -26,7 +26,7 @@ class GroupTest {
CreateGroupEvent createGroupEvent = new CreateGroupEvent(1,2, "asd", "hello", "foo");
Group group = new Group();
group.applyEvent(createGroupEvent);
group.apply(createGroupEvent);
assertThat(group.getDescription()).isEqualTo("foo");
assertThat(group.getTitle()).isEqualTo("hello");
@ -38,11 +38,11 @@ class GroupTest {
void addSingleUser() {
CreateGroupEvent createGroupEvent = new CreateGroupEvent(1,1,"prof1", "hi", "foo");
Group group = new Group();
group.applyEvent(createGroupEvent);
group.apply(createGroupEvent);
User user = new User("prof", "jens", "bendi", "hi@gmail.com");
AddUserEvent addUserEvent = new AddUserEvent(1,1, user);
group.applyEvent(addUserEvent);
group.apply(addUserEvent);
assertThat(group.getMembers().get(0)).isEqualTo(user);
}
@ -55,13 +55,13 @@ class GroupTest {
AddUserEvent addUserEvent = new AddUserEvent(1L, 1L, "5L", "Peter", "Pan", "123@mail.de");
Group group = new Group();
group.applyEvent(createGroupEvent);
group.applyEvent(addUserEvent);
group.apply(createGroupEvent);
group.apply(addUserEvent);
UpdateRoleEvent updateRoleEvent = new UpdateRoleEvent(1L, 1L, "5L", Role.ORGA);
// Act
group.applyEvent(updateRoleEvent);
group.apply(updateRoleEvent);
// Assert
assertThat(group.getRoles())