[Demonstration 1]

[Buggy Method]
public static SysRoleExample convertSysRoleExample(SysRoleQuery sysRoleQuery) {
    SysRoleExample example = new SysRoleExample();
    SysRoleExample.Criteria criteria = example.createCriteria();
    if (sysRoleQuery != null) {
        if (sysRoleQuery.getId() != null) {
            criteria.andIdEqualTo(sysRoleQuery.getId());
        }
        if (CollectionUtils.isNotEmpty(sysRoleQuery.getIds())) {
            criteria.andIdIn(Lists.newArrayList(sysRoleQuery.getIds()));
        }
        if (StringUtils.isNotBlank(sysRoleQuery.getRoleName())) {
            criteria.andRoleNameEqualTo(sysRoleQuery.getRoleName());
        }
        if (StringUtils.isNotBlank(sysRoleQuery.getRoleDesc())) {
            criteria.andRoleDescEqualTo(sysRoleQuery.getRoleDesc());
        }
        if (sysRoleQuery.getIsDelete() != null) {
            criteria.andIsDeletedEqualTo(sysRoleQuery.getIsDelete().byteValue());
        }
        if (StringUtils.isNotBlank(sysRoleQuery.getOderByClause())) {
            example.setOrderByClause(sysRoleQuery.getOderByClause());
        }
    }
    return example;
}

[Buggy Hunk]
criteria.andRoleDescEqualTo(sysRoleQuery.getRoleDesc());

[Patch]
criteria.andRoleDescriptionEqualTo(sysRoleQuery.getRoleDesc());

[Demonstration 2]

[Buggy Method]
public static Result service(String ownerName, String projectName, String service, boolean isAdvertise) throws IOException, UnsupportedOperationException, ServletException {
    if (!isSupportedService(service)) {
        return forbidden(String.format("Unsupported service: '%s'", service));
    }
    Project project = Project.findByOwnerAndProjectName(ownerName, projectName);
    if (project == null) {
        return notFound();
    }
    models.User user = UserApp.currentUser();
    if (!isAllowed(project, service)) {
        if (user.isAnonymous()) {
            return BasicAuthAction.unauthorized(response());
        } else {
            // If you want the Git client showing your custom message to
            // the user, the Content-Type should be exact "text/plain"
            // without any parameter. For more details, see the code at
            // https://github.com/git/git/commit/426e70d4a11ce3b4f70636d57c6a0ab16ae08a00#diff-eea0ad565ec5903a11b6023755d491cfR154
            response().setHeader("Content-Type", "text/plain");
            return forbidden(String.format("'%s' has no permission to '%s/%s'.", user.name, ownerName, projectName));
        }
    }
    if (isAdvertise) {
        return ok(RepositoryService.gitAdvertise(project, service, response()));
    } else {
        if (request().body().isMaxSizeExceeded()) {
            return status(REQUEST_ENTITY_TOO_LARGE);
        } else {
            user.visits(project);
            return ok(RepositoryService.gitRpc(project, service, request(), response()));
        }
    }
}

[Buggy Hunk]
user.name, ownerName, projectName));

[Patch]
user.loginId, ownerName, projectName));

[Demonstration 3]

[Buggy Method]
@Override
public User selectByLogin(String login) {
    CriteriaBuilder builder = entityManager.getCriteriaBuilder();
    CriteriaQuery<User> criteria = builder.createQuery(User.class);
    Root<User> root = criteria.from(User.class);
    criteria.select(root);
    criteria.where(builder.equal(root.get(User_.userLogin), login));
    User user = null;
    try {
        user = entityManager.createQuery(criteria).getSingleResult();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return user;
}

[Buggy Hunk]
criteria.where(builder.equal(root.get(User_.userLogin),login));

[Patch]
criteria.where(builder.equal(root.get(User_.userName),login));