I am very new to Java and am in need of some help. I have created a @MappedSuperclass "Attendees" using OpenXava.
import javax.persistence.*;
import org.hibernate.annotations.*;
import org.openxava.annotations.*;
@MappedSuperclass
public class Attendees {
@Id @Hidden @Column(length = 3)
@GeneratedValue(generator="system-uuid") @GenericGenerator(name="system-uuid", strategy="uuid")
private String oid;
public String getOid() {
return oid;
}
public void setOid(String oid) {
this.oid = oid;
}
}
I then extended it with two further classes "Staff" and "Participants".
import javax.persistence.*;
@Entity
public class Staff extends Attendees{
@Column (length = 50)
private String fullName;
@Column (length = 2)
private int age;
@Column (length = 10)
private int contactNum;
@Embedded
private Address address;
@Embedded
private MedicalInformation medicalInfo;
...
}
and
import javax.persistence.*;
@Entity
public class Participants extends Attendees{
@Column (length = 50)
private String fullName;
@Column (length = 2)
private int age;
@Column (length = 10)
private int contactNum;
@Embedded
private Address address;
@Embedded
private MedicalInformation medicalInfo;
...
}
Below is the code for the two @Embedded elements:
Address:
import javax.persistence.*;
@Embeddable
public class Address {
@Column(length = 100)
private String street;
@Column(length = 100)
private String suburb;
@Column(length = 100)
private String city;
@Column(length = 100)
private String province;
@Column(length = 5)
private int areaCode;
...
}
and
MedicalInformation:
import javax.persistence.*;
@Embeddable
public class MedicalInformation {
@Column (length = 3)
private String dailyMedication;
@Column (length = 300)
private String medicationDescription;
@Column (length = 300)
private String allergies;
@Column (length = 300)
private String dietRequirements;
@Column (length = 300)
private String additionalNotes;
...
}
Apart from the Attendees class, I have omitted all getters() and setters().
I run the application as a Java Application and it works up until the point that I attempt to input and save a record. when I click "save" I am prompted with:
Impossible to execute Save action: org.hibernate.exception.DataException: could not execute statement
upon closer inspection in the consol of OpenXava I find the following:
Oct 25, 2020 5:03:36 PM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions
WARN: SQL Error: 3401, SQLState: 22001
Oct 25, 2020 5:03:36 PM org.hibernate.engine.jdbc.spi.SqlExceptionHelper logExceptions
ERROR: data exception: string data, right truncation; table: PARTICIPANTS column: OID
Oct 25, 2020 5:03:36 PM org.openxava.controller.ModuleManager manageRegularException
SEVERE: org.hibernate.exception.DataException: could not execute statement
javax.persistence.PersistenceException: org.hibernate.exception.DataException: could not execute statement
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:154)
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:181)
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:188)
at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1459)
at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1439)
at org.openxava.jpa.impl.EntityManagerDecorator.flush(Unknown Source)
at org.openxava.model.impl.JPAPersistenceProvider.flush(Unknown Source)
at org.openxava.model.impl.MapFacadeBean.commitTransaction(Unknown Source)
at org.openxava.model.impl.MapFacadeBean.create(Unknown Source)
at org.openxava.model.MapFacade.create(Unknown Source)
at org.openxava.actions.SaveAction.create(Unknown Source)
at org.openxava.actions.SaveAction.execute(Unknown Source)
at org.openxava.controller.ModuleManager.executeAction(Unknown Source)
at org.openxava.controller.ModuleManager.executeAction(Unknown Source)
at org.openxava.controller.ModuleManager.execute(Unknown Source)
at org.apache.jsp.xava.execute_jsp._jspService(execute_jsp.java:266)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:476)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:712)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:580)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:516)
at org.openxava.web.servlets.Servlets.getURIAsStream(Unknown Source)
at org.openxava.web.dwr.Module.getURIAsStream(Unknown Source)
at org.openxava.web.dwr.Module.request(Unknown Source)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at org.directwebremoting.impl.ExecuteAjaxFilter.doFilter(ExecuteAjaxFilter.java:34)
at org.directwebremoting.impl.DefaultRemoter$1.doFilter(DefaultRemoter.java:428)
at org.directwebremoting.impl.DefaultRemoter.execute(DefaultRemoter.java:431)
at org.directwebremoting.impl.DefaultRemoter.execute(DefaultRemoter.java:283)
at org.directwebremoting.servlet.PlainCallHandler.handle(PlainCallHandler.java:52)
at org.directwebremoting.servlet.UrlProcessor.handle(UrlProcessor.java:101)
at org.directwebremoting.servlet.DwrServlet.doPost(DwrServlet.java:146)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:853)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1587)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Unknown Source)
Caused by: org.hibernate.exception.DataException: could not execute statement
at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:52)
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:99)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:178)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3174)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3688)
at org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:90)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:604)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:478)
at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:356)
at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:39)
at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1453)
... 60 more
Caused by: java.sql.SQLDataException: data exception: string data, right truncation; table: PARTICIPANTS column: OID
at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
at org.hsqldb.jdbc.JDBCPreparedStatement.fetchResult(Unknown Source)
at org.hsqldb.jdbc.JDBCPreparedStatement.executeUpdate(Unknown Source)
at org.apache.tomcat.dbcp.dbcp2.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:136)
at org.apache.tomcat.dbcp.dbcp2.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:136)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:175)
... 68 more
other Entities in the application that I have not mentioned here, allow me to save new records. these Entities are however not linked or related to the provided code.
Please Help.
Change:
@Id @Hidden @Column(length = 3)
@GeneratedValue(generator="system-uuid") @GenericGenerator(name="system-uuid", strategy="uuid")
private String oid;
By:
@Id @Hidden @Column(length = 32)
@GeneratedValue(generator="system-uuid") @GenericGenerator(name="system-uuid", strategy="uuid")
private String oid;
Note @Column(length = 32) instead of @Column(length = 3). Also you have to drop your tables in order OpenXava generates them again, of if they already have data just do a ALTER TABLE to change the column length for OID column.