Question

我正在尝试运行以下hql但是出现Caused by: java.lang.UnsupportedOperationException: Unrecognized property type: org.hibernate.type.BagType(org.model.Test.groups)错误。

Query query = session.createQuery("from Test t " +
                    " JOIN FETCH t.groups g " +
                    " where t.id=:id" +
                    " and g.value.name= :name ")
                    .setString("id", id);
                    .setString("name", name);

List<Test> tList = query.list();

这个也给出了同样的错误;

Query query = session.createQuery("from Test t " +
                        " JOIN FETCH t.groups g " +
                        " JOIN FETCH g.value v " +
                        " where t.id=:id" +
                        " and v.name= :name ")
                        .setString("id", id);
                        .setString("name", name);

@Entity
@Table
public class Test {
    ...
    @OneToMany(fetch = FetchType.EAGER, cascade = CascadeType.ALL)
    private List<Group> groups;
    ...
}

@Entity
@Table
public class Group {
    ...        
    @OneToOne(fetch = FetchType.EAGER, cascade = CascadeType.ALL)
    @JoinColumn(name = "value")
    private Value value;
    ...
}

@Entity
@Table
public class Value {
    ...
    @Column(name="name", nullable=false)
    private String name;
    ...
}

如果我只运行以下hql，我将获得所有测试，组和值表的列值，没有任何问题。

Query q = session.createQuery("from Test t where t.id= :id")
                 .setString("id", id);

下面是完整的错误堆栈跟踪;

Caused by: java.lang.UnsupportedOperationException: Unrecognized property type: org.hibernate.type.BagType(org.model.Test.groups)
org.hibernate.ogm.query.parsing.impl.ParserPropertyHelper.getPropertyType(ParserPropertyHelper.java:104)
org.hibernate.ogm.datastore.mongodb.query.parsing.impl.MongoDBPropertyHelper.getPropertyType(MongoDBPropertyHelper.java:48)
org.hibernate.ogm.query.parsing.impl.ParserPropertyHelper.convertToPropertyType(ParserPropertyHelper.java:48)
org.hibernate.hql.ast.spi.SingleEntityQueryRendererDelegate.parameterValue(SingleEntityQueryRendererDelegate.java:465)
org.hibernate.hql.ast.spi.SingleEntityQueryRendererDelegate.addComparisonPredicate(SingleEntityQueryRendererDelegate.java:305)
org.hibernate.hql.ast.spi.SingleEntityQueryRendererDelegate.predicateEquals(SingleEntityQueryRendererDelegate.java:284)
org.hibernate.hql.ast.render.QueryRenderer.predicate(QueryRenderer.java:5238)
org.hibernate.hql.ast.render.QueryRenderer.searchCondition(QueryRenderer.java:4912)
org.hibernate.hql.ast.render.QueryRenderer.searchCondition(QueryRenderer.java:4848)
org.hibernate.hql.ast.render.QueryRenderer.whereClause(QueryRenderer.java:2376)
org.hibernate.hql.ast.render.QueryRenderer.querySpec(QueryRenderer.java:2229)
org.hibernate.hql.ast.render.QueryRenderer.queryExpression(QueryRenderer.java:2132)
org.hibernate.hql.ast.render.QueryRenderer.queryStatement(QueryRenderer.java:1771)
org.hibernate.hql.ast.render.QueryRenderer.queryStatementSet(QueryRenderer.java:1684)
org.hibernate.hql.ast.render.QueryRenderer.statement(QueryRenderer.java:680)
org.hibernate.hql.ast.spi.QueryRendererProcessor.process(QueryRendererProcessor.java:51)
org.hibernate.hql.QueryParser.parseQuery(QueryParser.java:82)
org.hibernate.ogm.datastore.mongodb.query.parsing.impl.MongoDBBasedQueryParserService.parseQuery(MongoDBBasedQueryParserService.java:40)
org.hibernate.ogm.query.impl.OgmQueryTranslator.getQuery(OgmQueryTranslator.java:169)
org.hibernate.ogm.query.impl.OgmQueryTranslator.getLoader(OgmQueryTranslator.java:134)
org.hibernate.ogm.query.impl.OgmQueryTranslator.list(OgmQueryTranslator.java:128)
org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:216)
org.hibernate.internal.SessionImpl.list(SessionImpl.java:1339)
org.hibernate.internal.QueryImpl.list(QueryImpl.java:87)

Answer 1

Hibernate OGM目前不支持在* -to-many关联上使用JOIN进行JP-QL查询：https://docs.jboss.org/hibernate/stable/ogm/reference/en-US/html_single/#_using_jp_ql

Answer 2

不能说这是否是您特定错误的原因，尤其是因为只有来自entites的部分代码。但请检查一下（因为它抱怨Group）

您似乎是在Test＆lt;＆gt; Group之间进行双向映射，@OneToMany注释和List<Group> groups Test之后。 Group如何映射到Test？没有mappedBy属性或类似属性。

你应该有类似的东西：

@OneToMany(fetch = FetchType.EAGER, cascade = CascadeType.ALL, mappedBy="test")
private List<Group> groups;

在Test方面

。在Group那边你应该有一个像：

这样的领域

@ManyToOne
private Test test;

也许你有但不在提供的代码段中。

java.lang.UnsupportedOperationException：无法识别的属性类型：org.hibernate.type.BagType

2 个答案: