java - 节点 : org. hibernate.hql.internal.ast.tree.IdentNode HQL 没有数据类型

Question

我有 HQL，我试图在其中获取没有分类的工件(当 Activity 为 0 时)

artifacts = Artifact.findAll("FROM Artifact WHERE id NOT IN ( SELECT artifact_id FROM Classification WHERE active = 1) AND document_id = :docid",[docid:document.id], [max:limit, offset:startIndex]);

每次运行都会出错

java.lang.IllegalStateException: No data type for node: org.hibernate.hql.internal.ast.tree.IdentNode 
 \-[IDENT] IdentNode: 'artifact_id' {originalText=artifact_id}

分类定义:

class Classification {

    public static final String USER_DEFAULT = "USER"
    public static final String USER_SYSTEM = "SYSTEM"

    TaxonomyNode node
    String artifactId 
    Boolean active
    String createdBy
    String updatedBy
    Date dateCreated
    Date lastUpdated


    static constraints = {
        node nullable:false, blank:false
        artifactId nullable:false, blank:false, unique: ['node']
        active nullable: false, blank: false
        createdBy nullable:false, blank:false
        updatedBy nullable:false, blank:false
    }

    static mapping = {
        id generator:'sequence', params:[sequence:'classification_seq']
        artifactId index: 'classify_by_artifact_node'
        node index: 'classify_by_artifact_node'
        active defaultValue: "1"
    }
}

你可以引用我之前遇到的问题来了解我到底想要做什么Quest 1和 Quest 2

Answer 1

SQL 查询使用列名，而 HQL 查询使用类属性。您正在从分类中选择 artifact_id，但分类类没有名为“artifact_id”的属性。要修复它，请使用 HQL 中的类属性。

SELECT artifactId FROM Classification