public class UpdateProjectPermission extends BasicHierarchyPermission {

    private static final long serialVersionUID = 1L;
    public static final int LEVEL_PROJECT = 10;
    private long projectId;

    public UpdateProjectPermission() {
	super(UpdateProjectPermission.class.getSimpleName() + ".*", LEVEL_PROJECT);
    }

    public UpdateProjectPermission(long projectId) {
	super(UpdateProjectPermission.class.getSimpleName() + "." + projectId, LEVEL_UNDEFINED);
	this.projectId = projectId;
    }

    public long getProjectId() {
	return projectId;
    }

    @Override
    protected int execCalculateLevel(BasicHierarchyPermission other) {
	int result = LEVEL_ALL;
	if (other instanceof UpdateProjectPermission) {
	    long projectNr = ((UpdateProjectPermission) other).getProjectId();
	    Participation level = BEANS.get(IProjectService.class).getParticipationLevel(projectNr);
	    if (level != null && level.ordinal() >= Participation.MEMBER.ordinal()) {
		result = LEVEL_PROJECT;
	    }
	}
	return result;
    }
}

public class UpdateProjectPermission extends BasicHierarchyPermission {
  private static final long serialVersionUID = 1L;

  private final long projectId;

  /**
   * Constructor used to check access for projectId
   */
  public UpdateProjectPermission(long projectId) {
    super(UpdateProjectPermission.class.getSimpleName());
    this.projectId = projectId;
  }

  /**
   * Constructor used in {@link AbstractAccessControlService#execLoadPermissions}.
   */
  public UpdateProjectPermission(int level) {
    super(UpdateProjectPermission.class.getSimpleName(), level);
    this.projectId = 0;
  }

  public long getProjectId() {
    return projectId;
  }
  
  @Override
  protected int execCalculateLevel(BasicHierarchyPermission other) {
    ...
  }

  @Override
  public int hashCode() {
    final int prime = 31;
    int result = super.hashCode();
    result = prime * result + (int) (projectId ^ (projectId >>> 32));
    return result;
  }

  @Override
  public boolean equals(Object obj) {
    if (this == obj) {
      return true;
    }
    if (!super.equals(obj)) {
      return false;
    }
    if (getClass() != obj.getClass()) {
      return false;
    }
    UpdateProjectPermission other = (UpdateProjectPermission) obj;
    if (projectId != other.projectId) {
      return false;
    }
    return true;
  }
}