7
axtavtの回答に基づき、これはほとんどの場合、NotebeanとNoteBeanの間の命名問題です。ここには、CamelCaseだけの通常のコンベンションがありますか？不明な抽象スキーマタイプ
エンティティの@NamedQueryアノテーションを更新し、コントローラのものを使用していて、名前が一致するように見えますが、スキーマに関する同じエラーがまだ発生していると思います。多くの情報を得る。
JPAコントローラ：
package net.bounceme.dur.nntp.controller;
import java.util.*;
import java.util.logging.Logger;
import javax.mail.Message;
import javax.persistence.*;
import javax.swing.DefaultListModel;
import net.bounceme.dur.nntp.model.NoteBean;
public class NotesController {
private static final long serialVersionUID = 1L;
private static final Logger LOG = Logger.getLogger(NotesController.class.getName());
private Message message;
private List<NoteBean> notes = new ArrayList<NoteBean>();
private DefaultListModel defaultListModel = new DefaultListModel();
private EntityManagerFactory emf;
private EntityManager em;
private String PERSISTENCE_UNIT_NAME = "nntpPU";
public NotesController() {
emf = Persistence.createEntityManagerFactory(PERSISTENCE_UNIT_NAME);
em = emf.createEntityManager();
LOG.info("entity manager made???" + em.isOpen());
populateList();
}
private void populateList() {
LOG.info("open?" + em.isOpen());
em.getTransaction().begin();
LOG.info("trying to populate.....");
//Query q = em.createQuery("SELECT n FROM NoteBean n WHERE n.id = :id");
Query q = em.createNamedQuery("NoteBean.findAll");
LOG.info(q.toString());
List results = q.getResultList();
em.getTransaction().commit();
setNotes(results);
DefaultListModel dlm = new DefaultListModel();
for (NoteBean n : getNotes()) {
dlm.addElement(n);
}
setDefaultListModel(dlm);
}
public Message getMessage() {
return message;
}
public void addNote(NoteBean noteBean) {
LOG.info(noteBean.toString());
em.getTransaction().begin();
em.persist(noteBean);
em.getTransaction().commit();
populateList();
}
public void setMessage(Message message) {
this.message = message;
}
private List<NoteBean> getNotes() {
return notes;
}
private void setNotes(List<NoteBean> notes) {
this.notes = notes;
}
public DefaultListModel getDefaultListModel() {
return defaultListModel;
}
public void setDefaultListModel(DefaultListModel defaultListModel) {
this.defaultListModel = defaultListModel;
}
}
エンティティ：
package net.bounceme.dur.nntp.model;
import java.io.Serializable;
import java.util.Date;
import javax.persistence.*;
import javax.xml.bind.annotation.XmlRootElement;
@Entity
@Table(name = "NOTEBEAN", catalog = "nntp", schema = "")
@XmlRootElement
@NamedQueries({
@NamedQuery(name = "NoteBean.findAll", query = "SELECT n FROM NoteBean n"),
@NamedQuery(name = "NoteBean.findById", query = "SELECT n FROM Notebean n WHERE n.id = :id"),
@NamedQuery(name = "NoteBean.findByStamp", query = "SELECT n FROM Notebean n WHERE n.stamp = :stamp"),
@NamedQuery(name = "NoteBean.findByNote", query = "SELECT n FROM Notebean n WHERE n.note = :note")
})
public class NoteBean implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@Basic(optional = false)
@Column(name = "ID", nullable = false)
private Long id;
@Column(name = "STAMP")
@Temporal(TemporalType.DATE)
private Date stamp;
@Column(name = "NOTE", length = 255)
private String note;
public NoteBean() {
}
public NoteBean(Long id) {
this.id = id;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public Date getStamp() {
return stamp;
}
public void setStamp(Date stamp) {
this.stamp = stamp;
}
public String getNote() {
return note;
}
public void setNote(String note) {
this.note = note;
}
@Override
public int hashCode() {
int hash = 0;
hash += (id != null ? id.hashCode() : 0);
return hash;
}
@Override
public boolean equals(Object object) {
// TODO: Warning - this method won't work in the case the id fields are not set
if (!(object instanceof NoteBean)) {
return false;
}
NoteBean other = (NoteBean) object;
if ((this.id == null && other.id != null) || (this.id != null && !this.id.equals(other.id))) {
return false;
}
return true;
}
@Override
public String toString() {
return "net.bounceme.dur.nntp.model.Notebean[ id=" + id + " ]";
}
}
実行時エラー：
init:
Deleting: /home/thufir/NetBeansProjects/SwingNNTP/build/built-jar.properties
deps-jar:
Updating property file: /home/thufir/NetBeansProjects/SwingNNTP/build/built-jar.properties
Compiling 2 source files to /home/thufir/NetBeansProjects/SwingNNTP/build/classes
warning: [options] bootstrap class path not set in conjunction with -source 1.5
Note: /home/thufir/NetBeansProjects/SwingNNTP/src/net/bounceme/dur/nntp/controller/NotesController.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
1 warning
compile:
run:
May 03, 2012 7:23:05 AM net.bounceme.dur.nntp.PropertiesReader getProps
INFO: NNTP.loadMessages...
May 03, 2012 7:23:06 AM net.bounceme.dur.nntp.controller.MessagesEnum <init>
INFO: starting controller..
[TopLink Info]: 2012.05.03 07:23:10.319--ServerSession(10922033)--TopLink, version: Oracle TopLink Essentials - 2.0.1 (Build b09d-fcs (12/06/2007))
Exception in thread "AWT-EventQueue-0" Local Exception Stack:
Exception [TOPLINK-8034] (Oracle TopLink Essentials - 2.0.1 (Build b09d-fcs (12/06/2007))): oracle.toplink.essentials.exceptions.EJBQLException
Exception Description: Error compiling the query [NoteBean.findByNote: SELECT n FROM Notebean n WHERE n.note = :note]. Unknown abstract schema type [Notebean].
at oracle.toplink.essentials.exceptions.EJBQLException.unknownAbstractSchemaType(EJBQLException.java:494)
at oracle.toplink.essentials.internal.parsing.ParseTreeContext.classForSchemaName(ParseTreeContext.java:163)
at oracle.toplink.essentials.internal.parsing.SelectNode.getClassOfFirstVariable(SelectNode.java:366)
at oracle.toplink.essentials.internal.parsing.SelectNode.getReferenceClass(SelectNode.java:354)
at oracle.toplink.essentials.internal.parsing.ParseTree.getReferenceClass(ParseTree.java:463)
at oracle.toplink.essentials.internal.parsing.ParseTree.adjustReferenceClassForQuery(ParseTree.java:103)
at oracle.toplink.essentials.internal.parsing.EJBQLParseTree.populateReadQueryInternal(EJBQLParseTree.java:127)
at oracle.toplink.essentials.internal.parsing.EJBQLParseTree.populateQuery(EJBQLParseTree.java:108)
at oracle.toplink.essentials.internal.ejb.cmp3.base.EJBQueryImpl.buildEJBQLDatabaseQuery(EJBQueryImpl.java:219)
at oracle.toplink.essentials.queryframework.EJBQLPlaceHolderQuery.processEjbQLQuery(EJBQLPlaceHolderQuery.java:111)
at oracle.toplink.essentials.internal.sessions.AbstractSession.processEJBQLQueries(AbstractSession.java:2059)
at oracle.toplink.essentials.internal.sessions.AbstractSession.processEJBQLQueries(AbstractSession.java:2046)
at oracle.toplink.essentials.internal.sessions.DatabaseSessionImpl.postConnectDatasource(DatabaseSessionImpl.java:724)
at oracle.toplink.essentials.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:604)
at oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:280)
at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:229)
at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:93)
at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:126)
at oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:120)
at oracle.toplink.essentials.internal.ejb.cmp3.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:91)
at net.bounceme.dur.nntp.controller.NotesController.<init>(NotesController.java:23)
at net.bounceme.dur.nntp.gui.Detail.<init>(Detail.java:20)
at net.bounceme.dur.nntp.gui.NewFrame.initComponents(NewFrame.java:30)
at net.bounceme.dur.nntp.gui.NewFrame.<init>(NewFrame.java:17)
at net.bounceme.dur.nntp.gui.NewFrame$2.run(NewFrame.java:62)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:705)
at java.awt.EventQueue.access$000(EventQueue.java:101)
at java.awt.EventQueue$3.run(EventQueue.java:666)
at java.awt.EventQueue$3.run(EventQueue.java:664)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:675)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
BUILD SUCCESSFUL (total time: 10 seconds)
ちょうど参考のため、MySQLのコンソール出力：
mysql> describe nntp.NOTEBEAN;
+-------+--------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------+--------------+------+-----+---------+-------+
| ID | bigint(20) | NO | PRI | NULL | |
| STAMP | date | YES | | NULL | |
| NOTE | varchar(255) | YES | | NULL | |
+-------+--------------+------+-----+---------+-------+
3 rows in set (0.00 sec)
mysql>
mysql> select * from nntp.NOTEBEAN;
Empty set (0.04 sec)
mysql>
は、私はあなたのロジックが好き、私はまだ[Notebean] '不明な抽象スキーマタイプ取得.'そのクエリで：
だから、あなたはあなたのクエリで
NoteBean代わりのNotebeanを使用する必要があります。その '@ Table'アノテーションは、NoteBeanとNotebeanについて指摘したことを読んだ後、さらに疑わしいものになります。しかし、同じ結果です。 – Thufir@Thufir：名前付きのすべてのクエリでそれを変更する必要があることに注意してください。 – axtavt
名前の問題を解決するための質問が更新されました。 – Thufir