JoinClause - 无效语句。请检查别名、字段标识符、投影和查询条件

JoinClause - Invalid statement. Please check aliases, field identifiers, projections and query conditions

我正在使用 Dynamicloud,但我的代码有问题:

这是我的代码:

RecordModel contactFormModel = new RecordModel(contactModelId);
RecordModel userFormModel = new RecordModel(userContactModelId);

DynamicProvider<ContactForm> provider = new DynamicProviderImpl<ContactForm>(new RecordCredential(csk, aci));

contactFormModel.setBoundClass(ContactForm.class);
Query<ContactForm> query = provider.createQuery(contactFormModel);
query.setAlias("contact");

query.setProjection("contact.namef, contact.comments");
JoinClause join = Conditions.innerJoin(userFormModel, "user", "contact.id = user.contactid");
query.join(join);

try {
    RecordResults<ContactForm> list = query.add(Conditions.like("contact.namef", "ProBusiness%")).list();
    System.out.println("list = " + list.getFastReturnedSize());

    if (list.getFastReturnedSize() > 0) {
        System.out.println("Contact Name = " + list.getRecords().get(0).getName());
        System.out.println("Contact Comments = " + list.getRecords().get(0).getComments());
    }

} catch (DynamicloudProviderException e) {
    e.printStackTrace();
}

此代码抛出以下异常:

org.dynamicloud.exception.DynamicloudProviderException: Invalid statement.  Please check aliases, field identifiers, projections and query conditions.

怎么了?

谢谢!

问题是您的投影部分缺少 "id"。您需要设置您的JoinClause中涉及的一个模型的id。

Dynamicloud 始终按 Id 对结果进行排序,在这种情况下,查询具有不明确的列 user.idcontact.id"

试试把下面的id放到你的projection中(当然要看你的需要):

    query.setProjection("contact.id, contact.namef, contact.comments");

希望对您有所帮助!