Hibernate Questions

Warning - i am very new to nhibernate. i know this question seems simple - and i'm sure there's a simple answer, but i've been spinning my wheels

So i am building a site where someone puts a post and people can make comments to the post and people can make comments to those comments --

There is a spring mvc app where the customer has the option to place an order. you can set the date and time of the order in the

**resolving exception from handler [[email protected]]: org.springframework.beans.typemismatchexception: failed to convert

In my code i have two entities busdetails and user. the user and the busdetails has many to many relationship. whenever i try to book bus, the

I am using spring mvc and spring security and hibernate. iam having problem with save 'phone number" to "database". where is mistake? i

My spring application have problem with save 'date" to "database". where is mistake?

I have been gathering many helpful answers from this site in the last few weeks. i joined so that i could +1 to some of the answers i found most

In my database, i have an entity table (let's call it entity). each entity can have a number of entity types, and the set of entity types is

One of my goals over the next few months is to get familiar with nhibernate and am curious if anyone out there has any suggestions of where to

To make it short: hibernate doesn't support projections and query by example? i found this post: the code is this: user

I have an existing database with the table transactions in it. i have added a new table called transactionsequence where each transaction will

Do you always use a second-level cache in hibernate or do you first try it without and only use it when the performance goes down?

As far as i know hibernate let's you configure entities and collections to be stored in a second-level cache. when does hibernate try to

Does anybody know if hibernate's static initialize() method, which populates a proxy object, will attempt to hit the second-level

What are the steps required to enable hibernate's second-level cache, when using the java persistence api (annotated entities)? how do i check

I've added @pattern annotation to a query parameter in my rest controller (springboot kotlin). i would like the regex in the pattern to accept

How fix next error? error schemaexport:484 - hhh000389: unsuccessful: alter table category_relations add constraint

I am newbie with database. i have knowledge of java. i am using play framework(java not scala) to develop a web app. now for storing

How can an object be loaded via hibernate based on a field value of a member object? for example, suppose the following classes existed, with a

I have the following entities class productunitofmessure @manytoone @joincolumn(name="product_id") private product

I have order entity that has orderitems list. @onetomany(mappedby ="order") list<orderitem>

I'm developing a service and currently working on 2 of its entities (section and gradelevel) while i'm still developing,

Is there any where i can make a button to be pressed only once in a day. you cannot press that button again in that day. you need to wait till

I am working on a spring boot project using spring data jpa and i am wondering if exist a nice and elegant solution to the following use case.

I am working on a spring boot application using spring data jpa and i have the following problem. i have this eventlog

I have an entity that has many fields mapped to columns in my database using the @entity and @column annotations. columns might include something

I need to load the post entities along with the postvote entity that represents the vote cast by a specific user (the

I have an isession.queryover code block. in where clause, there is a problem as shown below var receipts= isession.queryover(()

I having troubles to get the object in javascript expression thymeleaf, how can i resolved? i m trying to fill a select option with the

I have two entities: 1. post. 2. tag. they are implemented as follows: @entity(name = "post") @table(name =

I am trying to create a java predicate that gets all entities that match a certain id: public predicate

These are the entities defined in my project: post @entity public class post implements serializable { public enum

When i try to fetch the child entity, it also gets the parent entity because of one to many bidirectional mapping but the parent entity inside the

How can i generate ids for object in a non-sequential manner? i would prefer for the ids not to be a linear sequence and thus predictable. yet,

Know that there is a lot of question of this. this is cause by the row of data is update by other thread, and the other thread could not acquire

I want to implement a behavior that insert a row in a table after some models saves. my current solution in short is this: (this is just an

With this code: city.java @entity @table(name = "cities") public class city extends auditmodel { @id

Package org.javab.hibernate; import org.hibernate.session; import org.hibernate.sessionfactory; import org.hibernate.cfg.configuration;

I'm getting java.lang.illegalargumentexception: org.hibernate.hql.internal.ast.querysyntaxexception: user is not mapped [from

Ora-02289: sequence does not exist, error in hibernbate

How to write in clause using createnativequery ? example codelist = "123 ,456"; then i

I have an @entity with three fields a, b, c out of which a and b act as composite primary key. i created an @embeddedid

I want to apply parameter binding to the dynamic native query where the column name which i am fetching i will be passing that dynamically from

I have two entity(employeeto & restto) there is one-to-many relationship between them,i want to get employee restto list only, but when i

I have two tables with many to many relations. products(id, description, price,image)----> products_category(idproducts, category _id)---->

Our application allows our customer to have multiple databases, all running on one instance of the database server. for example, databases

I have a requirement to create a search engine for relational database like oracle. i have to create a search engine with the help of elastic

I am working on creating structured interviewing app.

I have added below query dsl plugin in eclipse to generate qdsl classes. while using dsl classes in my repository its giving complication

I have requirement that in common api module(multi module project) i can't use any kind of hibernate's validation annotations, so i did use one

How to use java 8 lambda to refactor this sample properly? i am trying to use java 8 lambda on the following sample:

I'm new to spring mvc and hibernate (and also databases in general), so would like some help. currently i have 2 tables in my database -

Have hql query list<developer> developers = session.createquery("from developer d " + "left join

I am doing a service that get data from a source and fetch them into my database by using jpa. the id is generated by using sequence. i have

I am stuck in a tricky situation while writing a jpql query, following are my tables:- order_ order_id

I would have a problem with the junit tests with mockito. when i try to verify a service i get the error: "actual invocation has different

I have a problem with hibernate spring integration. there is not any error but when hibernate has to save in db the information it launch a

In my spring project i have a pojo class with a property for a cmyk color. i want this property to be represented by a json array with exactly 4

I want to make a new ms in spring boot, my app need to connect to multiple db (for now its 40 different servers but lets say n ). i have an api

I currently have an entity as below: @entity public class product { @id @generatedvalue(strategy = generationtype.auto)

It is possible to use constructor of varargs in @query (org.springframework.data.jpa.repository). what i mean is class like this:

I have installed hibernate tools in my ide eclipse. when i launch the hibernate console configuration, it seem to work well. i can show the

How can i run cron job in spring webmvc framework with hibernate..? currently i have a application with spring-mvc and hibernate.i need to

So i'm getting myself up to speed with hibernate and i've run into an issue that i can't quite understand how to model in hibernate that i could

The sequence in oracle db is getting updated by cache size+lastnumber value, when app server(tomcat) gets restart. my application is using

I'm studying hibernate and jpa, and i am finding this term all the time. could someone explain me in a practical and didactic way, what is this

I built a simple springboot api which is hooked up to a h2 db that contains some test data. however when i hit the api endpoint i get an empty

I want to add child object automatically in db using hibernate one to one relationship. with following code its not adding foreign key in address

I have a script for microsoft sql server database which has hundreds of tables and tables contains data as well. this is the database of a web

I'm currently stuck on classcastexception where i cant figure out whats happening exactly. note the query itself

To retrieve the db column length from hibernate. i have used: property property =

Consider the following two entities: @entity public class hostmachine { @manytomany(fetch = fetchtype.lazy, targetentity =

What is the meaning of following exception : javax.persistence.persistenceexception: org.hibernate.mappingexception:

Using jpa optimistic locking we can control via a @version field if a database table has been updated by another transaction at the same time,

I am working on asp.net mvc web project with nhibernate and mysql. everything is ok but i am randomly

I have a mapping problem with hibernate. in a @onetoone relationship, i don't want to cascade the update to the partner. this is my

I am working on a spring-mvc application in which we are using hibernate and c3p0 for database transactions and connection pooling. most of the

I have a string array named andorbuttonfilter which stores and or filters selected by user. also

Any help you can give is very gratefully accepted. i've been looking at this problem over and over and cannot seem to find the solution. its

I have a new object with a collection of new objects within it on some property as an ilist. i see through sql profiler two insert queries being

I need your help with the following problem: there is a spring boot project, it has two entities: bank and creditdetails, the bank refers to the

I am trying to build an expense tracker application using spring boot rest api. the following are the entity classes i have created. user

What's the difference between managedsessioncontext and threadlocalsessioncontext both has a threadlocal in their

I encountered a problem using hibernate and spring mvc, that is, if i run a query with a join inside i get a 500 error without any detail, can

I have 2 tables user url i'm trying to create a relationship between said 2 tables. a user can have many urls,

I want to create jpa repository for spring authorization server using this code:

I have 2 entities, one for a tasklist and the other for users. the users can create tasks for themselves or their friends, so in the tasks entity

I am trying to run this java maven app but i can not win the "fight" with this error. what do you think ? has it happened to any of you before ?

Hi im creating a sample project for springmvc with hibernate with oracle as backend . i am stuck with one issue seems like some configuration

I have a student table with the primary key id. i am using hibernate and session's load command to fetch the record. the records i am fetching ids

I tried but i couldn't find a better title so it looks weird but the question is actually very simple... i have a jpa query which uses a

I am learning hibernate and have some questions about the differences between entity and table, and how they work together/independently?

I am struggling for a couple hours with one problem regarding the initial setup of hibernate for eclipse. more precisely i am getting this error

So, i've been trying for many days to run my project, without success. spring boot + hibernate + jpa. oracle database. can anybody help me?

Package com.kk.mypackage; @repository @transactional public class dbconnectioncredit implements dbconnectioncreditint { @autowired

I'm using the hibernate reverse engineering to generate annotated entities and a cfg.xml for a very large non static set of database tables. is it

I'm trying to get record from database with hibernate query: file f = new

Java 11 try to use hibernate here migration sql: create table client ( id bigserial primary key, name

With hibernate, can you create a composite id where one of the columns you are mapping to the id can have null values? this is to deal