Hibernate 4.3.6 QuerySyntaxException：加入的路径 [英] Hibernate 4.3.6 QuerySyntaxException: Path expected for join
问题描述
使用Hibernate 4.3.6，JDK 7和Groovy 2.2
def query ='从Parcel中选择lip.referenceId作为lip left join TransportFile tf其中，lip.statusDisplayName！= tf.statusDisplayName'
def hqlQuery = session.createQuery（query）
def hqlcount = hqlQuery.list（）。size
当我运行上面的代码时，我得到下面的错误
com.dc.core.common.exception.BaseApplicationException：org.hibernate.hql.internal.ast.QuerySyntaxException：加入的路径！ [从com.dc.apps.cp.ebilling.model.impl.Parcel中选择lip.referenceId作为lip left join TransportFile tf where lip.statusDisplayName！= tf.statusDisplayName]
以下是我的Parcel实体
package com.dc. apps.cp.ebilling.model.impl
@Entity
@Audited
public class Parcel implements IPersistentEntityInstance {
private static final long serialVersionUID = 1L;
私人长ID;
@AttributeReadPermission（name =SUBMITTEDFILE.READ）
@AttributeWritePermission（name =SUBMITTEDFILE.UPDATE）
private文件submittedFile;
私人ParcelType类型;
private boolean isBeingSubmitted;
private TransportFile transportFile;
$ / code $ / pre
下面是我的TransportFile实体
package com.dc.apps.cp.legacy.model.impl;
@Entity
@EntityMetadataDefaults（editable = false）
public class TransportFile implements ITransportObject {
private static final long serialVersionUID = 1L;
私人长ID;
private String statusDisplayName;
// [ReferenceID] [varchar]（30）NOT NULL
private String referenceId;
// [发送] [日期时间] NULL，
私人时间戳sentDate;
// [received] [datetime] NULL，
私人时间戳receivedDate;
// [Status] [varchar]（4）NULL，
private String statusCode;
私人列表< TransportLog> TransportLogs;
private String rejectReason;
}
我引用这篇文章 HQL left join：预期加入的路径，但我没有看到任何worng我的HQL连接查询。
解决方案这个例外期望加入的路径说：
提供从一个实体到另一个实体的路径。连接由映射定义
所以我们需要：
从parcel中选择lip.referenceId
作为lip
//而不是这个
// left join TransportFile tf
//我们需要一个路径从Parcel到TransportFile
left join lip.transportFile tf
where lip.statusDisplayName！= tf.statusDisplayName'
...
语句 left join TransportFile tf 更像是一个SQL ...对于HQL来说并非如此。 / p>
我们的声明必须表达导航： left join lip.transportFile tf - 即加入与 lip 相关的transportFile 。
Am having problem with HQL join query. Can anyone tell me whats wrong with my below join HQL query?
Am using Hibernate 4.3.6, JDK 7 and Groovy 2.2
def query = 'select lip.referenceId from Parcel as lip left join TransportFile tf where lip.statusDisplayName != tf.statusDisplayName'
def hqlQuery = session.createQuery(query)
def hqlcount = hqlQuery.list().size
Am getting the below error when i run above code
com.dc.core.common.exception.BaseApplicationException: org.hibernate.hql.internal.ast.QuerySyntaxException: Path expected for join! [select lip.referenceId from com.dc.apps.cp.ebilling.model.impl.Parcel as lip left join TransportFile tf where lip.statusDisplayName != tf.statusDisplayName]
Below is my Parcel entity
package com.dc.apps.cp.ebilling.model.impl
@Entity
@Audited
public class Parcel implements IPersistentEntityInstance {
private static final long serialVersionUID = 1L;
private Long id;
@AttributeReadPermission(name = "SUBMITTEDFILE.READ")
@AttributeWritePermission(name = "SUBMITTEDFILE.UPDATE")
private File submittedFile;
private ParcelType type;
private boolean isBeingSubmitted;
private TransportFile transportFile;
}
Below is my TransportFile entity
package com.dc.apps.cp.legacy.model.impl;
@Entity
@EntityMetadataDefaults(editable = false)
public class TransportFile implements ITransportObject {
private static final long serialVersionUID = 1L;
private Long id;
private String statusDisplayName;
// [ReferenceID] [varchar](30) NOT NULL
private String referenceId;
// [sent] [datetime] NULL,
private Timestamp sentDate;
// [received] [datetime] NULL,
private Timestamp receivedDate;
// [Status] [varchar](4) NULL,
private String statusCode;
private List<TransportLog> TransportLogs;
private String rejectionReason;
}
I refered to this post HQL left join: Path expected for join but I dont see any anything worng my HQL join query.
解决方案 This exception "Path expected for join" is saying:
Provide a path from one entity, to the other. The join is defined by the mapping
So we would need:
select lip.referenceId
from Parcel as lip
// instead of this
// left join TransportFile tf
// we need a path from Parcel to TransportFile
left join lip.transportFile tf
where lip.statusDisplayName != tf.statusDisplayName'
...
The statement left join TransportFile tf is more like a SQL... which is not the case for HQL.
Our statement must be expressing navigation: left join lip.transportFile tf - i.e. join the transportFile which is related to lip.
这篇关于Hibernate 4.3.6 QuerySyntaxException：加入的路径的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
