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Meine Webanwendung verwendet GWT 2.0.2, GXT 2.1.1, Hibernate 3.5-CR1, Javassist 3.11.0 und Gilead 1.3.1 (neueste Version von SVN).Fehler "Duplicate-Methode" bei Verwendung von Hibernate + Javassist + Gilead
Meine App lief gut mit GWT 1.7.1 + Gilead 1.2.
Ich möchte einige der Funktionen von GWT 2.0 nutzen und denke, dass ich dabei auf das neueste Gilead upgraden würde. Ich zeigte auf die neue gwt.xml-Datei in Gilead 1.3. Ich verwende auch die neue net.sf.gilead.pojo.gwt.LightEntity anstelle von net.sf.gilead.pojo.java5.LightEntity.
Ich habe ein paar Hibernate Entitäten/Klassen, die LightEntity (d. H. Frage, Form), sowie einige weitere Entitäten/Klassen, die die Frage-Entität erweitern. Nicht sicher, ob es wichtig ist, aber ich verwende InheritanceType.JOINED für die Vererbungsstrategie in der Entität Frage.
Als Referenz ist hier die Frage Klasse:
@Entity
@Table(name = "Questions")
@Inheritance(strategy = InheritanceType.JOINED)
public abstract class Question extends LightEntity implements IsSerializable,
IFormItem, Comparable<Question> {
private static final long serialVersionUID = 9180458948973980161L;
public static final String FIELD_NAME_PREFIX = "field_"; //$NON-NLS-1$
private static final String REQUIRED_QUESTION = "<span style=\"color: red;\">*</span>"; //$NON-NLS-1$
public static int MIN_WIDTH = 50;
public static int DEFAULT_WIDTH = 200;
public static int MAX_WIDTH = 600;
private int id;
private Integer questionOrder;
private String questionNumber;
protected String questionText;
protected boolean required;
private String toolTip;
protected Integer fieldWidth;
@Id
@GeneratedValue
public int getId() {
return this.id;
}
public void setId(int id) {
this.id = id;
}
public boolean isRequired() {
return this.required;
}
public void setRequired(boolean required) {
this.required = required;
}
public String getToolTip() {
return this.toolTip;
}
public void setToolTip(String toolTip) {
this.toolTip = toolTip;
}
@Column(length = 5000)
@Lob
public String getQuestionText() {
return this.questionText;
}
public void setQuestionText(String pText) {
this.questionText = pText;
}
public Integer getQuestionOrder() {
return this.questionOrder;
}
public void setQuestionOrder(Integer questionOrder) {
this.questionOrder = questionOrder;
}
public String getQuestionNumber() {
return this.questionNumber;
}
public void setQuestionNumber(String questionNumber) {
this.questionNumber = questionNumber;
}
public boolean hasQuestionNumber() {
return getQuestionNumber() != null
&& !getQuestionNumber().trim().isEmpty();
}
public Integer getFieldWidth() {
return this.fieldWidth;
}
public void setFieldWidth(Integer fieldWidth) {
this.fieldWidth = fieldWidth;
}
public Component render(FormPanel formPanel, int order, int questionSpacing) {
final Component c = generateWidget(getId());
if (c instanceof Field<?>) {
final Field<?> field = (Field<?>) c;
field.setLabelSeparator(FormBuilderConstants.EMPTY_TEXT);
field.setValidateOnBlur(true);
field.setAutoValidate(true);
field.setName(FIELD_NAME_PREFIX.concat(String.valueOf(getId())));
if (getToolTip() != null) {
field.setToolTip(getToolTip());
}
final FormData formData;
if (field instanceof SimpleComboBox<?>) {
formData = new FormData();
} else {
if (getFieldWidth() == null) {
field.setAutoWidth(true);
formData = new FormData(FormBuilderConstants.FORM_ANCHOR_SPEC);
} else {
field.setWidth(getFieldWidth().intValue());
field.setAutoWidth(false);
formData = new FormData(getFieldWidth().intValue(), -1);
}
}
final String questionNumber;
if (this.questionNumber != null && !this.questionNumber.isEmpty()) {
questionNumber = this.questionNumber;
} else {
questionNumber = String.valueOf(order);
}
if (this.answerable()) {
String displayQuestionText = questionNumber.concat(". ") //$NON-NLS-1$
.concat(getQuestionText());
if (isRequired()) {
displayQuestionText = displayQuestionText
.concat(REQUIRED_QUESTION);
}
field.setFieldLabel(displayQuestionText);
}
field.setIntStyleAttribute("margin-bottom", questionSpacing); //$NON-NLS-1$
formPanel.add(field, formData);
} else {
formPanel.add(c);
}
return c;
}
protected abstract Component generateWidget(final int id);
public abstract String questionType();
public int compareTo(final Question q) {
return this.questionOrder.intValue() - q.questionOrder.intValue();
}
public boolean answerable() {
return true;
}
}
Meine App hat ein Startup-Servlet, das eine Hibernate-Session Fabrik erzeugt. In den Protokollen bekomme ich einen Fehler "doppelte Methode" für alle Klassen, die LightEntity direkt oder indirekt erweitern. Ich frage mich, ob dies ein Problem mit der Vererbung von Javaassist ist.
16:32:59,616 DEBUG AbstractEntityPersister:2773 - Identity insert: insert into Questions (fieldWidth, questionNumber, questionOrder, questionText, required, toolTip) values (?, ?, ?, ?, ?, ?)
16:32:59,619 ERROR BasicLazyInitializer:165 - Javassist Enhancement failed: com.function1.formbuilder.client.model.Question
java.lang.RuntimeException: duplicate method: getProxyInformation in com.function1.formbuilder.client.model.Question_$$_javassist_5
at javassist.util.proxy.ProxyFactory.createClass3(ProxyFactory.java:344)
at javassist.util.proxy.ProxyFactory.createClass2(ProxyFactory.java:314)
at javassist.util.proxy.ProxyFactory.createClass(ProxyFactory.java:273)
at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.getProxyFactory(JavassistLazyInitializer.java:162)
at org.hibernate.proxy.pojo.javassist.JavassistProxyFactory.postInstantiate(JavassistProxyFactory.java:66)
at org.hibernate.tuple.entity.PojoEntityTuplizer.buildProxyFactory(PojoEntityTuplizer.java:188)
at org.hibernate.tuple.entity.AbstractEntityTuplizer.<init>(AbstractEntityTuplizer.java:151)
at org.hibernate.tuple.entity.PojoEntityTuplizer.<init>(PojoEntityTuplizer.java:78)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at org.hibernate.tuple.entity.EntityTuplizerFactory.constructTuplizer(EntityTuplizerFactory.java:107)
at org.hibernate.tuple.entity.EntityTuplizerFactory.constructDefaultTuplizer(EntityTuplizerFactory.java:135)
at org.hibernate.tuple.entity.EntityEntityModeToTuplizerMapping.<init>(EntityEntityModeToTuplizerMapping.java:80)
at org.hibernate.tuple.entity.EntityMetamodel.<init>(EntityMetamodel.java:323)
at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:456)
at org.hibernate.persister.entity.JoinedSubclassEntityPersister.<init>(JoinedSubclassEntityPersister.java:113)
at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:87)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:267)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1341)
at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:867)
at com.function1.common.F1HibernateUtil.<clinit>(F1HibernateUtil.java:22)
at com.function1.formbuilder.server.StartupServlet.init(StartupServlet.java:26)
Caused by: java.lang.RuntimeException: duplicate method: getProxyInformation in com.function1.formbuilder.client.model.Question_$$_javassist_0
at javassist.util.proxy.ProxyFactory.createClass3(ProxyFactory.java:344)
at javassist.util.proxy.ProxyFactory.createClass2(ProxyFactory.java:314)
at javassist.util.proxy.ProxyFactory.createClass(ProxyFactory.java:273)
at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.getProxyFactory(JavassistLazyInitializer.java:162)
... 42 more
Caused by: javassist.bytecode.DuplicateMemberException: duplicate method: getProxyInformation in com.function1.formbuilder.client.model.Question_$$_javassist_0
at javassist.bytecode.ClassFile.testExistingMethod(ClassFile.java:593)
at javassist.bytecode.ClassFile.addMethod(ClassFile.java:577)
at javassist.util.proxy.ProxyFactory.override(ProxyFactory.java:658)
at javassist.util.proxy.ProxyFactory.overrideMethods(ProxyFactory.java:632)
at javassist.util.proxy.ProxyFactory.make(ProxyFactory.java:552)
at javassist.util.proxy.ProxyFactory.createClass3(ProxyFactory.java:335)
Haben Sie Ideen, wie Sie dieses Problem lösen können?
geben den gesamten Code von 'Question' – Bozho
ich den ganzen Code hinzugefügt , Danke für den Tipp. – lupefiasco
Versuchen Sie, alle Klassen, die die Frage erweitern, vorübergehend zu entfernen, Fragen konkret zu stellen und alle Vererbungszuordnungen zu entfernen und festzustellen, ob die Ausnahme weiterhin besteht. Dann gib ein Feedback. – Bozho