public interface ProjectListener extends EventListener {
/**
* This method gets called when a new project is created.
* The {@link BaseEvent#getSource()} is the newly created project
* @throws VetoException if the listener wishes the change to be rolled back.
*/
default void projectCreated(BaseEvent<ProjectDto,Void,Void event) throws VetoException {}
/**
* This method gets called when a project is updated.
* The {@link BaseEvent#getSource()} is the new/updated project state
* The {@link BaseEvent#getSecondarySource()} is the old project state before the update
* @param event contains the "new" state as "source" and the "old" state as "secondarySource", so you have access to both.
* @throws VetoException if the listener wishes the change to be rolled back.
*/
default void projectUpdated(BaseEvent<ProjectDto,ProjectDto,Void event) throws VetoException {}
/**
* This method gets called when a project is deleted.
* The {@link BaseEvent#getSource()} is the deleted project
* @throws VetoException if the listener wishes the change to be rolled back.
*/
default void projectDeleted(BaseEvent<ProjectDto,Void,Void event) throws VetoException {}
/**
* This method gets called when the daily project statistics are built (typically daily once a night).
* The {@link BaseEvent#getSource()} is the project the statistics of which is to be built
* The {@link BaseEvent#getSecondarySource()} is the statistics anchor date.
* The {@link BaseEvent#getData()} are the {@link DailyProjectStatsDto}, but only in the post event notification.
* @throws VetoException if the listener wishes not to build statistics or this project.
* @since CB-6.0
*/
default void projectDailyStatistics(BaseEvent<ProjectDto,Date,DailyProjectStatsDto event) throws VetoException {}
/**
* This method gets called when a user requested to join a project.
* The {@link BaseEvent#getSource()} is the project where the {@link BaseEvent#getUser()} wants to join
* The {@link BaseEvent#getSecondarySource()} is the comment of the user for the join request
* @param event
* @throws VetoException
*/
default void userJoinRequested (BaseEvent<ProjectDto,String,Void event) throws VetoException {}
/**
* This method gets called when a project join request was accepted.
* The {@link BaseEvent#getSource()} is the project where the join was accepted by the {@link BaseEvent#getUser()}
* The {@link BaseEvent#getSecondarySource()} is the comment of the user who accepted the join
* The {@link BaseEvent#getData()} is the user whose join request was accepted.
* @param event
* @throws VetoException
*/
default void userJoinAccepted (BaseEvent<ProjectDto,String,UserDto event) throws VetoException {}
/**
* This method gets called when a project join request was rejected
* The {@link BaseEvent#getSource()} is the project where the join was rejected by the {@link BaseEvent#getUser()}
* The {@link BaseEvent#getSecondarySource()} is the comment of the user who rejected the join
* The {@link BaseEvent#getData()} is the user whose join request was rejected.
* @param event
* @throws VetoException
*/
default void userJoinRejected (BaseEvent<ProjectDto,String,UserDto event) throws VetoException {}
}

package com.intland.codebeamer.event.impl.sample;
import org.springframework.stereotype.Component;
import com.intland.codebeamer.event.ProjectListener;

@Component("exampleProjectListener")
public class ExampleProjectListener implements ProjectListener {

}

package com.intland.codebeamer.event.impl.sample;

import org.springframework.stereotype.Component;
import com.intland.codebeamer.event.ProjectListener;
import com.intland.codebeamer.manager.ProjectManager;

@Component("exampleProjectListener")
public class ExampleProjectListener implements ProjectListener {

@Autowired
private ProjectManager projectManager;

...
}

package com.intland.codebeamer.event.impl.sample;

import org.springframework.stereotype.Component;

import com.intland.codebeamer.event.BaseEvent;
import com.intland.codebeamer.event.ProjectListener;
import com.intland.codebeamer.event.util.VetoException;
import com.intland.codebeamer.persistence.dto.ProjectDto;

@Component("exampleProjectListener")
public class ExampleProjectListener implements ProjectListener {

@Override
public void projectCreated(BaseEvent<ProjectDto, Void, Void> event) throws VetoException {
ProjectDto project = event.getSource();

if (event.isPreEvent() && project.getCategoryReference() == null) {
throw new VetoException("Each project must have a category!");
}
}

}

~/CB-../tomcat/webapps/cb/WEB-INF/classes/my-ApplicationContext.xml