Eclipslink-未知实体类型 [英] Eclipslink - Unknown entity type

查看：137
本文介绍了Eclipslink-未知实体类型的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我正在使用Netbeans生成的一些实体.经过一代人的测试，他们工作正常.因此，我不得不继续下一步，将它们与我的JAXB对象结合起来.与JAXB对象结合后，我可以毫无问题地解组XML流.但是，当我尝试将这些类中的任何一个用于与实体相关的任何东西时，都会遇到一些错误.

I am using some entities generated by Netbeans. After generation I tested them and they were working fine. So then I had to move to my next step and combine those with my JAXB objects. After combining with the JAXB objects I am able to unmarshall my XML stream with no problem. But when I try to use any of those classes for anything entity related I get some errors.

我现在又回到了测试阶段，这就是我所拥有的.我有一个仅从简单的main方法运行的测试类.我最初用来测试实体的相同设置.在下面，您将看到该测试类，Classes实体，导致问题JoinAssetToSku和错误的实体.我省略了实体的大多数设置者和获取者.有谁知道此JoinAssetToSku.findByTs查询出了什么问题.我不明白它是如何导致该错误的，它不是自我意识！?

I am back at the testing phase again now and here is what I have. I have a test class just running from a simple main method. The same setup I used to test the entities originally. Below you will see that test class, the Classes entity, The entity causing the issues JoinAssetToSku and the error. I have left out the majority of the setters and getters of the entities. Does anyone know what is wrong with this JoinAssetToSku.findByTs query. I do not understand how it causes that error, it is not self aware!?

进行测试的代码:

public void testClassEntity(){
        testClass = new Classes(1);
        testClass.setClassId("12");
        testClass.setDescription("The First Class");
        testClass.setTs(new java.sql.Timestamp(new Date().getTime()));
        ClassesJpaController cc = new ClassesJpaController();
            try {
                cc.create(testClass);
            } catch (PreexistingEntityException ex) {
                Logger.getLogger(EntityTest.class.getName()).log(Level.SEVERE, null, ex);
            } catch (Exception ex) {
                Logger.getLogger(EntityTest.class.getName()).log(Level.SEVERE, null, ex);
            }
    }

Classes类:

package entitiesjaxb.cmic.ajrs.com;

import java.io.Serializable;
import java.util.Collection;
import java.util.Date;
import javax.persistence.Basic;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.Id;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.OneToMany;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlSchemaType;
import javax.xml.bind.annotation.XmlTransient;
import javax.xml.bind.annotation.XmlType;

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "Classes", propOrder = {
    "pkId",
    "classId",
    "description",
    "ts"
})

@Entity
@Table(name = "classes")
@NamedQueries({
    @NamedQuery(name = "Classes.findAll", query = "SELECT c FROM Classes c"),
    @NamedQuery(name = "Classes.findByPkId", query = "SELECT c FROM Classes c WHERE c.pkId = :pkId"),
    @NamedQuery(name = "Classes.findByClassId", query = "SELECT c FROM Classes c WHERE c.classId = :classId"),
    @NamedQuery(name = "Classes.findByDescription", query = "SELECT c FROM Classes c WHERE c.description = :description"),
    @NamedQuery(name = "Classes.findByTs", query = "SELECT c FROM Classes c WHERE c.ts = :ts")})
public class Classes implements Serializable {
    private static final long serialVersionUID = 1L;
    @Id
    @Basic(optional = false)
    @Column(name = "pk_id")
    private Integer pkId;
    @Column(name = "class_id")
    @XmlElement(name = "ClassID")
    private String classId;
    @Column(name = "description")
    @XmlElement(name = "Description")
    private String description;
    @Basic(optional = false)
    @Column(name = "ts")
    @Temporal(TemporalType.TIMESTAMP)
    @XmlElement(required = true)
    @XmlSchemaType(name = "dateTime")
    private Date ts;
    @OneToMany(mappedBy = "classes", fetch = FetchType.LAZY)
    @XmlTransient
    private Collection<Categories> categoriesCollection;

    public Classes() {
    }

    public Classes(Integer pkId) {
        this.pkId = pkId;
    }

    public Classes(Integer pkId, Date ts) {
        this.pkId = pkId;
        this.ts = ts;
    }

导致错误的类:

package entitiesjaxb.cmic.ajrs.com;

import java.io.Serializable;
import java.util.Date;
import javax.persistence.Basic;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlSchemaType;
import javax.xml.bind.annotation.XmlType;

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "JoinAssetToSKU", propOrder = {
    "pkId",
    "assetData",
    "skuBasic",
    "ts"
})

@Entity
@Table(name = "join_asset_to_sku")
@NamedQueries({
    @NamedQuery(name = "JoinAssetToSku.findAll", query = "SELECT j FROM JoinAssetToSku j"),
    @NamedQuery(name = "JoinAssetToSku.findByPkId", query = "SELECT j FROM JoinAssetToSku j WHERE j.pkId = :pkId"),
    @NamedQuery(name = "JoinAssetToSku.findByTs", query = "SELECT j FROM JoinAssetToSku j WHERE j.ts = :ts")})
public class JoinAssetToSKU implements Serializable {
    private static final long serialVersionUID = 1L;
    @Id
    @Basic(optional = false)
    @Column(name = "pk_id")
    private Integer pkId;
    @Column(name = "ts")
    @Temporal(TemporalType.TIMESTAMP)
    @XmlElement(required = true)
    @XmlSchemaType(name = "dateTime")
    private Date ts;
    @JoinColumn(name = "pk_sku", referencedColumnName = "pk_id")
    @ManyToOne(fetch = FetchType.LAZY)
    private SKUBasic skuBasic;
    @JoinColumn(name = "pk_asset", referencedColumnName = "pk_id")
    @ManyToOne(fetch = FetchType.LAZY)
    private AssetData assetData;

    public JoinAssetToSKU() {
    }

    public JoinAssetToSKU(Integer pkId) {
        this.pkId = pkId;
    }

    public Integer getPkId() {
        return pkId;
    }

    public void setPkId(Integer pkId) {
        this.pkId = pkId;
    }

我得到的错误.

[EL Info]: 2011-04-15 08:26:58.223--ServerSession(2128911821)--EclipseLink, version: Eclipse Persistence Services - 2.0.2.v20100323-r6872
[EL Severe]: 2011-04-15 08:26:58.525--ServerSession(2128911821)--Local Exception Stack: 
Exception [EclipseLink-8034] (Eclipse Persistence Services - 2.0.2.v20100323-r6872): org.eclipse.persistence.exceptions.JPQLException
Exception Description: Error compiling the query [JoinAssetToSku.findByTs: SELECT j FROM JoinAssetToSku j WHERE j.ts = :ts]. Unknown entity type [JoinAssetToSku].
        at org.eclipse.persistence.exceptions.JPQLException.entityTypeNotFound(JPQLException.java:483)
        at org.eclipse.persistence.internal.jpa.parsing.ParseTreeContext.classForSchemaName(ParseTreeContext.java:138)
        at org.eclipse.persistence.internal.jpa.parsing.SelectNode.getClassOfFirstVariable(SelectNode.java:327)
        at org.eclipse.persistence.internal.jpa.parsing.SelectNode.getReferenceClass(SelectNode.java:316)
        at org.eclipse.persistence.internal.jpa.parsing.ParseTree.getReferenceClass(ParseTree.java:439)
        at org.eclipse.persistence.internal.jpa.parsing.ParseTree.adjustReferenceClassForQuery(ParseTree.java:79)
        at org.eclipse.persistence.internal.jpa.parsing.JPQLParseTree.populateReadQueryInternal(JPQLParseTree.java:103)
        at org.eclipse.persistence.internal.jpa.parsing.JPQLParseTree.populateQuery(JPQLParseTree.java:84)
        at org.eclipse.persistence.internal.jpa.EJBQueryImpl.buildEJBQLDatabaseQuery(EJBQueryImpl.java:202)
        at org.eclipse.persistence.internal.jpa.JPAQuery.processJPQLQuery(JPAQuery.java:106)
        at org.eclipse.persistence.internal.jpa.JPAQuery.prepare(JPAQuery.java:90)
        at org.eclipse.persistence.queries.DatabaseQuery.checkPrepare(DatabaseQuery.java:464)
        at org.eclipse.persistence.queries.DatabaseQuery.checkPrepare(DatabaseQuery.java:430)
        at org.eclipse.persistence.internal.sessions.AbstractSession.processJPAQueries(AbstractSession.java:1747)
        at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:409)
        at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.postConnectDatasource(DatabaseSessionImpl.java:671)
        at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:620)
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:228)
        at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:369)
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:151)
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:207)
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:195)
        at controllers.cmic.ajrs.com.ClassesJpaController.getEntityManager(ClassesJpaController.java:33)
        at controllers.cmic.ajrs.com.ClassesJpaController.create(ClassesJpaController.java:42)
        at cmicpojo.EntityTest.testClassEntity(EntityTest.java:33)
        at cmicpojo.Main.main(Main.java:45)

[EL Info]: 2011-04-15 08:26:58.545--ServerSession(2128911821)--EclipseLink, version: Eclipse Persistence Services - 2.0.2.v20100323-r6872
Apr 15, 2011 8:26:58 AM cmicpojo.EntityTest testClassEntity
SEVERE: null
Local Exception Stack: 
Exception [EclipseLink-7092] (Eclipse Persistence Services - 2.0.2.v20100323-r6872): org.eclipse.persistence.exceptions.ValidationException
Exception Description: Cannot add a query whose types conflict with an existing query. Query To Be Added: [ReadAllQuery(name="KeyFeatures.findByBasicDescription" referenceClass=KeyFeatures jpql="SELECT k FROM KeyFeatures k WHERE k.basicDescription = :basicDescription")] is named: [KeyFeatures.findByBasicDescription] with arguments [[class java.lang.String]].The existing conflicting query: [ReadAllQuery(name="KeyFeatures.findByBasicDescription" referenceClass=KeyFeatures jpql="SELECT k FROM KeyFeatures k WHERE k.basicDescription = :basicDescription")] is named: [KeyFeatures.findByBasicDescription] with arguments: [[class java.lang.String]].
        at org.eclipse.persistence.exceptions.ValidationException.existingQueryTypeConflict(ValidationException.java:895)
        at org.eclipse.persistence.internal.sessions.AbstractSession.addQuery(AbstractSession.java:388)
        at org.eclipse.persistence.internal.sessions.AbstractSession.addQuery(AbstractSession.java:360)
        at org.eclipse.persistence.internal.sessions.AbstractSession.processJPAQueries(AbstractSession.java:1749)
        at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:409)
        at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.postConnectDatasource(DatabaseSessionImpl.java:671)
        at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.login(DatabaseSessionImpl.java:633)
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:214)
        at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:195)
        at controllers.cmic.ajrs.com.ClassesJpaController.getEntityManager(ClassesJpaController.java:33)
        at controllers.cmic.ajrs.com.ClassesJpaController.findClasses(ClassesJpaController.java:174)
        at controllers.cmic.ajrs.com.ClassesJpaController.create(ClassesJpaController.java:62)
        at cmicpojo.EntityTest.testClassEntity(EntityTest.java:33)
        at cmicpojo.Main.main(Main.java:45)

推荐答案

这对我来说是一个错误，将生成的实体和生成的JAXB类组合在一起导致我找到了一些命名错误的类.

This was an error on my part, Combining the generated entities and generated JAXB classes led me to some classes named improperly.

类名称应为JoinAssetToSku以匹配命名查询.或者，我可以将类名保留为JoinAssetToSKU并更改命名查询.

The class name should be JoinAssetToSku to match the named query. Or I could leave the class name as JoinAssetToSKU and change the named query.

我选择更改班级名称.

这篇关于Eclipslink-未知实体类型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！

查看全文
相关文章
Java开发最新文章
热门教程
热门工具
登录 关闭
扫码关注1秒登录
发送“验证码”获取 | 15天全站免登陆