コーディングベストプラクティスシリーズの1つ

/**
  *  
  *
  * @param onlineProfile
  * @return  true， false
  */
private boolean isAppHasRent(AppOnlineProfile onlineProfile) {
    return onlineProfile == null ? false : "y".equals(onlineProfile.getHasRent());
}

/**
  *  Id 
  *
  * @param appSubscList  
  * @return  Id 
  */
private String[] getUserIds(final List appSubscList) {
    List resultList = new ArrayList(appSubscList.size());
    for (AppSubsc appSubsc : appSubscList) {
        resultList.add(appSubsc.getUser().getUserId());
    }
    return resultList.toArray(new String[resultList.size()]);
}

/**
  *  LongId， LongId 
  *
  * @param appSubscList  
  * @return  LongId 
  */
private List setLongIds(final List appSubscList) {
    List resultList = new ArrayList(appSubscList);
    UserIdentifier[] userIdentifiers = userService.getUserIdentifiers(getUserIds(appSubscList));
    if (userIdentifiers != null) {
        for (int i = 0; i < userIdentifiers.length; i++) {
            final String longId = userIdentifiers[i].getLongId();
            for (DomainPrefix domainPrefix : DomainPrefix.values()) {
                if (longId.startsWith(domainPrefix.name())){
                    resultList.get(i).getUser().setLongId(longId.substring(domainPrefix.name().length()));
                    break;
                }
            }
        }
    }
    return resultList;
}

Assert.notNull(appSubsc, "appSubsc must not be null"); Assert.notNull(appSubsc.getUser(), "appSubsc.user must not be null");

Assert.notNull(appSubsc.getUser().getUserId(), "appSubsc.user.userId must not be null");
Assert.notNull(appSubsc.getUser().getName(), "appSubsc.user.name must not be null");

Assert.notNull(appSubsc.getApp(), "appSubsc.app must not be null");
Assert.notNull(appSubsc.getApp().getId(), "appSubsc.app.appId must not be null");
Assert.notNull(appSubsc.getApp().getIsvId(), "appSubsc.app.isvId must not be null");

Assert.hasText(appSubsc.getAppInstanceId(), "appSubsc.appInstanceId must not be empty");