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0
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1answer
82 views

How do I integrate hibernate and REST web service in java?

I am going to develop which will be web application as well as mobile (android / iOS / windows) application. The database in this application will be managed by Hibernate. Also as it is cross platform ...
0
votes
0answers
22 views

How to use Hadoop HBase with Spring Boot without knowing the schema of the database ahead of time

I have created a basic application with spring boot and HSQL which connects an in-memory HSQL database with an angularjs front end using spring-boot and spring JPA with Hibernate. I am now trying to ...
0
votes
0answers
26 views

Are there special considerations to take for the database when using Hibernate's @Version?

We've encountered a bug which is solved by adding a @Version-ed field. However, I'd like to know if I need to add something special in the database (Oracle 11g), like adding some index on the new ...
3
votes
2answers
95 views

Micro-service database management?

Most people say when building micro-services, that it's best to have seperate databases for each of the microservices. E.g: User-microservice: DB - User userId name Etc... Review-microservice:...
0
votes
0answers
36 views

Design a System to save a data that will be missed from another system

I'm building a middleware system where I'm saving the data from VERY slow API, The system behind this API works like this It produce a data blocks, lets denote a datablock by A. While A is used by ...
0
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0answers
41 views

How does Hibernate Cascade on OneToOne work under the hood

I have the following entities corresponding to tables into DB: User, UserAttempt; User has a FK to UserAttempt, and UserAttempt has no knowledge of User. If I do the following inside a transactional ...
2
votes
1answer
59 views

How to optimize a bloated entity that causes a huge query

I have an application that exposes a series of Web services. One of my entities has a bunch of one-to-many and many-to-many relations to other entities. My transactionality level is at DAO, and I'd ...
3
votes
1answer
158 views

How to paginate local and remote data?

My team is currently facing a problem that we don't know how to tackle. Some technical details: we use Java 8, Hibernate, Spring, MySQL, and AngularJS for the front-end. We need to do pagination on ...
6
votes
5answers
650 views

How to design a complex REST API considering DB performance?

I've been following some tutorials on how to design REST APIs, but I still have some big questions marks. All these tutorials show resources with relatively simple hierarchies, and I would like to ...
1
vote
3answers
798 views

Best way to deal with Hibernate 1->Many relationship over REST/JSON service

Problem: A Hibernate bi-directional One-to-Many relationship does not map easily to JSON. If default (Jackson) mapping is used there is an infinite recursion issue as the parent contains the children ...
2
votes
1answer
238 views

How, in Three Tier Architecture is Database Access Achieved

So I am attempting to make an application based on the architecture proposed by this image; [1] However, I am getting very confused with how data access is achieved between the data access layer ...
4
votes
1answer
499 views

ORM: runtime proxies vs bytecode instrumentation

What are the benefits of using runtime proxies with an ORM provider like Hibernate or EclipseLink compared to bytecode instrumentation/enhancement? I know that bytecode instrumentation helps to ...
0
votes
1answer
363 views

DTO and JPA Version

I have DB tables representing Employees and Departments. The server side(JavaEE) contains JPA entities representing the same. The client is a standalone client and communicates with the server using ...
2
votes
2answers
211 views

What's the correct approach to DAO layer in presence of ORM framework

I'm using JPA/Hibernate but probably it doesn't limit question. Currently I'm writing my data access code in my web controller classes. Thanks to JPA, in most cases this code is very simple, ...
1
vote
3answers
325 views

Limiting complexity in JPA programs Java/Hibernate

I've been working on a new application for some months now. It's my first big JPA program, and is still in the early stages. However, the complexity of my JPA object tree is becoming a growing problem....
5
votes
1answer
542 views

Is this database design good? What JPA Entities should I create for this design?

I am trying my hands on JPA. For this I am thinking of using the example of a student admission process as shown in the diagram below. Is this design good ? Any suggestions for improvement are ...
4
votes
4answers
2k views

Programmatically extending Hibernate table/entity definitions in Spring, how?

I would like to know if there is a way —maybe with AOP— to extend table/entity definitions so that I can add functionality across the board that requires persistence. Let me explain what I want to do ...
3
votes
1answer
60 views

Dealing with Users and User-Owned Data in an API

I have a question about the way I am architecting an API. Structure My API structure so far is like so (there is about 10 classes total, but many are similar, so I've reduced to these classes, and ...
1
vote
0answers
309 views

Transaction Management in Hibernate with DAO Design Pattern

I have many Tables, For every Table,we have DAO Interface and DAOImplementation class. Example DAO Interface public interface CancelPolicyDAO { public CancelPolicy insertCancelPolicy(CancelPolicy ...
0
votes
1answer
806 views

Logic based on modified fields of a Hibernate entity

I have a Hibernate entity object MyObject with several attributes and a service MyObjectService containing business logic dealing with MyObject. I also have a view model dealing with user input/output ...
0
votes
2answers
260 views

Entity design for a blackjack game - should I make Card an entity?

I am creating a simple blackjack game backed by database In my Card is public class Card{ private Face face; private Suit suit; //setters.. getters } where face and suit are enums I have an ...
10
votes
1answer
3k views

Java application structure: Horizontal vs vertical split

Having a bit of a debate about the starting project structure (using Maven/Eclipse) for a big Java application. Option 1: entities (i.e. the whole database using Hibernate classes-first) services (i....
0
votes
1answer
551 views

Am I doing it wrong with Hibernate DAO layer? i.e. Feature Bloat

For quick prototyping I have been actively using Hibernate. Recently I came back to an old project and I wondered why I had a lot of DAOs with what I suspect is commonly named feature bloat. E.g. I ...
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vote
2answers
1k views

Using Hibernate Criteria framework for complex queries vs. just making views in DB

I like using Hibernate for regular simple CRUD operations. However, I am trying to understand why anyone would resort to its Criteria framework to assemble complex recordset criteria as opposed to ...
29
votes
5answers
57k views

Service layer vs DAO — Why both?

I have been working with SpringMVC, Hibernate, and some databases in a java web application example. There are a few different ones that do this, but this Spring 3 and hibernate integration tutorial ...
2
votes
1answer
6k views

Java desktop application using MVC + Hibernate

I'm developing a Java desktop application. I'm planning to use MVC architecture described at Oracle site: Java SE Application Design With MVC. I need to store data in database so I decide to use ...
5
votes
4answers
1k views

Performance related doubt in Java with Hibernate

Suppose in some ORM based project (say Hibernate) I am trying to fetch only few columns rather then the whole Object with may be more than 20 attributes. I am writing HQL like "select attr1, attr2 ...
1
vote
1answer
522 views

How to properly use Hibernate

I am new to Hibernate so my question could be seen as a very straight forward one, also I will try not to be too generic (as I am always told off because of that), although as with all architectural ...
2
votes
2answers
135 views

How to handle deleting record with associated records?

this is not a technical question but rather about the right logic on handling delete with foreign key constraint. First of all, Im very new to programming and a dummy about software engineering. Im ...
3
votes
1answer
111 views

Handling ground-breaking changes in a production system - Insert intermediate level Management object

As our client request, we are proceeding to change the base of our system. We already have the following structure: A class has many students. (simple typical one - to - many) Now we must change ...
0
votes
1answer
126 views

Keyword Collection, ManyToOne or OneToMany relationship?

I hope this is the right place for this type of problem. An Object of my class Movie can have several keywords ( like 'fight club', 'brad', 'fincher'), and be part of different categories (like '...
1
vote
1answer
269 views

SQL W/ hibernate vs in-memory solution

I recently posted a question here: Methods to share memory or state across JVMs? and appreciate the answers. However, as I read the code and learned the system better I learned I was over ...
2
votes
1answer
281 views

Sorting rows off an autoincrementing primary key

Is it a bad practice to rely on an auto-incrementing primary key to sort rows in a table? A coworker and I were having an argument about this subject. We need to be able to find the last-inserted row ...
1
vote
1answer
289 views

ORM: Keep entities coherent in a cache or retrieve entities each time?

We have a tricky question in a project using Java & Hibernate, with a model containing bi-directional relationships. As it's a small project with few users, few entities, and few rows involved in ...
5
votes
2answers
927 views

Hibernate set up for beginner

I am learning Hibernate (OR Mapping). I am using Maven for project management. However, I am currently reading a Hibernate book by O'Reilly, and they use ANT for their example. So my question is are ...
10
votes
5answers
27k views

Do I need to know servlets and JSP to learn spring or hibernate or any other java web frameworks? [closed]

I've been asking a lot of people where to start learning java web development, I already know core java (Threading,Generics,Collections, a little experience with (JDBC)) but I do not know JSPs and ...
1
vote
4answers
2k views

When using Hibernate can we forget about Database Design?

We started (just me and my friend) working on a website. As a part design phase we have finished the drawing a Site Map, decided on the content in each of the web page and the navigation. As we want ...
20
votes
5answers
40k views

What are the advantages of myBatis over Hibernate? [closed]

I've done some research on my own and understand the basic concept. But some insights can only be gained through actual experience. What are the advantages of myBatis that would make it worth ...
0
votes
3answers
3k views

Parsing excel data in Java before saving it to database [closed]

I'm working on some project where I have to make a database to store data which is currently kept in Excel files, so I have to do some changes before writing the data into the database. I'm going to ...
6
votes
1answer
945 views

Why were annotations introduced in Spring and Hibernate?

I would like to know why were annotations introduced in Spring and Hibernate? For earlier versions of both the frameworks book authors were saying that if we keep configuration in xml files then it ...
0
votes
1answer
2k views

Best practice for creating views in spring and hibernate web application

Hi I am currently developing a web application in Spring and Hibernate where i have several different tables. The Delivery table for example is mapped many-to-one with the Customer table and the ...
4
votes
3answers
1k views

When Business Object fields should not exactly reflect database columns

Main advantage with Hibernate annotations is the fact that a simple POJO (also called a Business Object the most of time) can become persistent through Hibernate annotations (or actually JPA) . In ...
6
votes
1answer
7k views

IntelliJ with Maven compilation

I have a project that needs Hibernate jars. I added them as dependencies in the pom.xml and Maven compiles my project well. However, in the IDE, all annotations and calls to Hibernate API are marked ...
10
votes
2answers
13k views

Is Spring + Hibernate prefered instead of EJB 3?

It is my perception that whenever new JEE projects start (where these technologies would be applicable), people prefer to use a combination of Spring + Hibernate instead of EJB 3. It seems junior ...
0
votes
0answers
256 views

How much should I know about Hibernate before I add it to my CV/Resume? [duplicate]

Possible Duplicate: At which point do you “know” a technology enough to list it on a resume I have been holding off adding Hibernate to my CV (resume, for American readers),but we ...
1
vote
1answer
1k views

Storing documents in Database vs CMS in JSF, Seam, Hibernate application on cloud

I am about to start with an application using JSF 2, Seam 3, Hibernate and Hibernate search with the following characteristics: Users will be uploading documents (pdf, doc). There can be millions of ...
5
votes
3answers
11k views

How significant are Spring and Hibernate in software development? [closed]

I am a software professional with about 1.6 years of experience in Java. Due to personal reasons, I had to quit my job, and now after 5 to 6 months, I am about start my career again. I am planning to ...
0
votes
1answer
3k views

Size of database a factor for Hibernate vs JDBC?

Do you know if the size of the database (number of tables used) is a factor when choosing between Hibernate and JDBC? Why or why not? In my particular case, I am evaluating Hibernate and JDBC for ...
0
votes
1answer
187 views

Technology Selection for a dynamic product

We are building a product for Procurement Domain in JAVA. Following are the main technical requirements. Platform Independent Database Independent Browser Independent In functional requirements ...
1
vote
1answer
3k views

What is the best way to manage Hibernate sessions in a Struts-1 application?

I am now the owner of a Struts-1 application, and the Hibernate session management is all over the place. I have searched online documentation but have not found a clear explanation of the best way ...