#10. OneToOne Mapping | Hibernate Mapping | Hibernate Tutorial in hindi 

Guys if your getting the below error: ERROR: Cannot add or update a child row: a foreign key constraint fails (`myhiber`.`question`, CONSTRAINT `FK3nwehyx3nxmikx8n7pmd6qyju` FOREIGN KEY (`answer_Answer_Id`) REFERENCES `answer` (`Answer_Id`)) Exception in thread "main" javax.persistence.PersistenceException: org.hibernate.exception.ConstraintViolationException: could not execute statement Then please check your main method() in the source file if after session.save(qstn); you have added this or not >>> session.save(ans);

I suggest ,When you make a video then use of DARK BACKGROUND , it will help us for Eye comfort. Nice explaination. Thank you

one of best thing about his tutorials he doesnt skip when error occurs he resolves in video keep teaching up thanks

Thank you for explaining in simple and clear

Great explanation, greedy towards your knowledge. 😄😄

Thanks sir

JAI HIND JAI BHARAT

Thank you so much for such a clean and clear explanation!!

I have buy Soure Code of Hibernate.....but i didn't see any link to download.....plz reply

Sir you are genius in many ways proud to be your chela 😋😋😍😍

Bahi app jo bolata ho na wo Rhoda slow ma bolo aur aka ka kar ka samajaya bahi tab to grow kara ga channel 😮😮😮😮

Very good content than others on RU-vid

@LearnCodeWithDurgesh For multiple cursor --> ctrl+2 and then select Rename in file....

multi-cursers shortcut: (alt+left_click).

please make a series on microservices

Great Explanation!

Sir, Question class... insert and update ki query run nahi hua... Plzz reply ...

Best lecture...

sir error aa rhi h error executing DDL alter table question drop foreign key

@Jointable vs @Joincolumn can anyone plz explain

watch it in 1.5x save time :)

Configuration cfg = new Configuration(); cfg.configure("hibernate.cfg.xml"); SessionFactory factory = cfg.buildSessionFactory(); //Creation Question Question q1 = new Question(); q1.setQuestionId(101); q1.setQuestion("What is Java ?"); //Creating Answer Answer answer = new Answer(); answer.setAnswerId(201); answer.setAnswer("Java is a programming language"); q1.setAnswer(answer); //Creation Question Question q2 = new Question(); q2.setQuestionId(102); q2.setQuestion("What is Python ?"); //Creating Answer Answer answer1 = new Answer(); answer1.setAnswerId(202); answer1.setAnswer("Python is a programming language"); q2.setAnswer(answer1); //session Session session = factory.openSession(); Transaction tx = session.beginTransaction(); session.save(answer); session.save(answer1); session.save(q1); session.save(q2); tx.commit(); session.close(); factory.close(); A small mistake in my code wasted a lot of time. May be my pasted code can help someone. Thanks for the awesome tutorial, Sir.

Thanks sir

muliple cursor ctrl +shift+r

: Cannot add or update a child row: a foreign key constraint fails (`new2`.`question`, CONSTRAINT `FKb2e5ogg3ayod6wv5u0obkfyx3` FOREIGN KEY (`answer_ans_id`) REFERENCES `answer` (`ans_id`)) this type of error is comming

Could not determine type for: com.learn.project1.Answer, at table: Question, for columns: [org.hibernate.mapping.Column(ans)]

why question and answer not showing in database after program run successfully also. can u plz give me solution

How can we save both(question and answer) objects data using single save method .

Can you please add code snippet also in the description. It would be of great help. Thanks!

please make a series of spring MVC with hibernate

In case of Oracle 11g Xpress edition, the code won't work unless and until we save the Answer object first. I we still force to run the code then ERROR: ORA-02291: integrity constraint (SYSTEM.FKEVO3UWX0W7O23M45UIG5442TL) violated - parent key not found The above exception is thrown. But I guess, as you are using MySQL so your code works even if you don't save the answer object.

Durgesh bhai videos ke section bna dia kro thoda easy hota hai padhne me

By annotation its working fine but when I am trying with xml I am getting "Exception in thread "main" java.lang.NullPointerException: Cannot invoke "java.lang.Integer.intValue()" because "index" is null" can anyone help on this. I am very new to hibernate.

I watched some more videos related to mapping before this but in those half knowledge was provided and that's why I was confused. I searched some more and found this channel, you cleared my each and every doubt, thanks

Sir, jab hum bidiectional OneToOne mapping use karke fir mappedBy karte hai, to ye to simple unidirectional OneToOne mapping jaise hi treat karega na, so why we not use unidirectional only instead of this much stuff?

Thanks sir Please make Spring framework for students.

Ctrl+Shift +/

Sir Sach me app padhate km ho bhagte zyada ho

Love From Pakistan

why did you save both question and ans? if you save question then it should be save ans also

I want to run this project on eclipse but I am using Linux OS Ubuntu so where can I get Hibernate external jar files..

sir jab m answer ko alag save krta hu jaise s.save(a1); or uske baad question ko save krta hu s.save(q1); to sab kuch thik ho jata h per jab jaisa aapne kiya video me ki aapne question ko hi save kiya answer automatically save ho jayega new table bnke or foreign key add ho jayegi apne aap question vali table me to ERROR: Cannot add or update a child row: a foreign key constraint fails ye error dikha rha h

Error: parent key not found

hold alt key and left click mouse on the positions where you want multiple cursors

why use super constructor ? video timing(17.17)

org.hibernate.boot.registry.classloading.spi.ClassLoadingException: any one help me, im getting this error

constraint violation showing..commit() not excecuting?what to do?

list

HI Sir, What happen if we does not keep @OneToOne Annotation [ mapping ] in Answer entity .

dunia bhar ki ad dal rkhi h yar

Sir i was getting stuck in this video , but finally was able to rectify the mistake

Exception in thread "main" java.lang.StackOverflowError Gettng this error while using System.out.println(question1); in biDirectional mapping Why this is happening

Sir answer wali table ma data nahi insert horahi he but queation wali table ma data insert horahi he iska soliution samaj nahi araraha he 2 3 ber try kiya laken answer same araha he.. Please sir solve this..

Xclnt Xplanation

You hand writing is more elegant and more beautiful than computer fonts. Thank you so much for all these useful training videos. Thank you sir!

If we will fetch the answer, will be get its answer also?

hi, Durgesh, please make video on Spring Batch if possible.

In Eclipse multi cursor Ctrl-Alt-J

bhai are you using pen tab for writing ? which one?

ERROR: Cannot add or update a child row: a foreign key constraint fails (`test`.`question`, CONSTRAINT `FKskqdlh4nc1ij4s806d6bjk5f1` FOREIGN KEY (`answer_answerId`) REFERENCES `answer` (`answerId`)) Exception in thread "main" javax.persistence.PersistenceException: org.hibernate.exception.ConstraintViolationException: could not execute statement

sir foreign key ko auto kr rhe h to chal raha h par manually m error de rha h

alt+leftClick for multiple cursor

OnetoMany and manytoOne run nahi ho raha !

sir one to one ma mari alag table create ni hori

ctrl +alt (multi cursor)

Hi, I have some doubt in the project, I could use your help for the same: 021-06-07 12:25:41.783 ERROR 8960 --- [ restartedMain] j.LocalContainerEntityManagerFactoryBean : Failed to initialize JPA EntityManagerFactory: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Could not determine type for: com.karkinos.webapp.Patient, at table: document, for columns: [org.hibernate.mapping.Column(patients)]

Exception in thread "main" javax.persistence.PersistenceException: org.hibernate.exception.ConstraintViolationException: 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:1366) at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:453) at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:3212) at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2380) at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:448) at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:183) at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$300(JdbcResourceLocalTransactionCoordinatorImpl.java:40) at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:281) at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:101) at com.map.MapDemo.main(MapDemo.java:35) Caused by: org.hibernate.exception.ConstraintViolationException: could not execute statement at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:59) 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:200) at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:3493) at org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert(AbstractEntityPersister.java:3355) at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:3769) at org.hibernate.action.internal.EntityUpdateAction.execute(EntityUpdateAction.java:201) at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:604) at org.hibernate.engine.spi.ActionQueue.lambda$executeActions$1(ActionQueue.java:478) at java.base/java.util.LinkedHashMap.forEach(LinkedHashMap.java:684) at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:475) at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:344) at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:40) at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:99) at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1362) ... 9 more Caused by: java.sql.SQLIntegrityConstraintViolationException: Cannot add or update a child row: a foreign key constraint fails (`myhiber`.`Question`, CONSTRAINT `FKs6ghcwuovtcp489oo5dy7rvk5` FOREIGN KEY (`answer_answer_id`) REFERENCES `Answer` (`answer_id`)) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:117) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) at com.mysql.cj.jdbc.ClientPreparedStatement.executeInternal(ClientPreparedStatement.java:953) at com.mysql.cj.jdbc.ClientPreparedStatement.executeUpdateInternal(ClientPreparedStatement.java:1092) at com.mysql.cj.jdbc.ClientPreparedStatement.executeUpdateInternal(ClientPreparedStatement.java:1040) at com.mysql.cj.jdbc.ClientPreparedStatement.executeLargeUpdate(ClientPreparedStatement.java:1347) at com.mysql.cj.jdbc.ClientPreparedStatement.executeUpdate(ClientPreparedStatement.java:1025) at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:197) ... 21 more I am getting this error. Could you please help me.

Where is code ?

Its giving exception like key already present while running same program again again for that we need to change question Id every time ?

Hi Sir, I'm getting this Error : ERROR: Cannot add or update a child row: a foreign key constraint fails (`hibernatelearning`.`question`, CONSTRAINT `FKbpp3dv1cwmcyfbuvmay7uypg` FOREIGN KEY (`answer_answerID`) REFERENCES `answer` (`answerID`)) Please help to resolve, I'm not getting proper solutions for this

You deserve more recognition bro

👌👌

Please upload spring mvc with hibernate video

ERROR: Cannot add or update a child row: a foreign key constraint fails (`newdb`.`question`, CONSTRAINT `FKs6ghcwuovtcp489oo5dy7rvk5` FOREIGN KEY (`answer_answer_id`) REFERENCES `answer` (`answer_id`))

Wanted to understand the advantage of making entities bidirectional ? After making beans bidirectional when I am trying to get the object to Answer question values are not getting populated.

why code download is paid ?

Foriegn key not supported in MyISAM engine error aa rha h. Sir plz help

sir mere me table to create ho raha hai workbench me but data nhi aa raha hai. null data

Very easily explained. Too the point video. Thanks a lot :)

Very simple and clear explanation.. thanks a lot.. 👍

nyc explanation

Sir ek hi dil hai kitne bar jitoge❤️❤️😋😍😍😍😍😃🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏 jai bholenath jai hanuman ji

Why are you so underrated man I just love your tutorials

thanks sir you are delivering such hard contents in easy manar great....

very nice Sir Keep posting Sir

easy explanation 👌

thanks

Awesome ❤

what is the difference between Embedded and oneToOne?

bhai..2 ghante se pareshan ho raha tha..Thanx for giving what exactly i was looking for...amazing

SQL Error: 1452, SQLState: 23000 ERROR: Cannot add or update a child row: a foreign key constraint fails Anyone else getting this error?......plz help

Excellent tutorial on hibernate OneToOne Mapping

This onetoone mapping is not working for me. I have used the exact same code but It gives exeption.org.hibernate.tool.schema.spi.CommandAcceptanceException:

Nice tutorial,i am fresher, new in this series,bt understand all points

ThanQ sir 🙏

your channel is doing great

thankyou verymuch bro....

Thank Your Sir...

thank you so much sir.............

tnks deer fur vdoeo