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I would like to use AND OR operator in same query as below using spring JPA Specification:-
SELECT * FROM areatbl where MAXIMUM = 100 and areacode = 1 or areacode=3;
Can some one please guide me how to do it ?
You should use any popular JPA implementation (like Hibernate, Eclipse Link, Open JPA) and integrate it into your Spring container.
There are plenty of Hibernate + Spring tutorials in the web - it is the most popular combination of tools
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How to generate an Angular 5 and Spring mvc using java 7 CRUD application from an existing database (oracle) ?
You Can use Jhipster
JHipster is a development platform to generate, develop and deploy Spring Boot + Angular/React Web applications and Spring microservices
Jhipster
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I new in mongodb , i have few question about mongodb with jpa
1) why to use mongodb with jpa
2) why to not use mongodb with jpa
There's no need to use JPA for MongoDB since it is a document database and so there's no step for mapping Java fields to columns. You can use native Java POJO with the MongoDB Java driver and it will automatically discover and persist fields for you.
See the Quick Start for a demo.
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I new to Spring and Hibernate -- I have seen lot of courses and simple mini-projects, but I feel that it is not enough.
Where can I find some "real" projects where Spring is used.
My aim is to understand typical architecture of Spring application...
This page http://www.furkanzumrut.com/open-source-project-using-spring-hibernate-techologies talks about a few open-source projects which use Spring and Hibernate.
For example:
Broadleaf Commerce
ZKSample2
Agile Express - a bit older, but real world one
Life Ray
Zipkin - see zipkin-server module for example
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I am new to Spring MVC and would like to produces statistics/metrics for my restful APIs. i have followed this link, he is explaining with "Spring Boot Acutator"..... I am not able to understand whether it is a good approach or not...
Can anyone tell me what is the correct way to produce statistics/metrics for APIs in Spring MVC?
Spring Boot creators also recommend an excellent Metrics module from the Dropwizard project.
You can use it along with your Spring application.
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I have a Vaadin Project that I didn't wrote. I didn't do anything with Vaadin before. Now I have to implement an API and Web Services for further communication.
So my question is: Is it possible to create web services and a further URL structure to the project besides the Vaadin stuff?
Thank you for your answers.
Vaadin is just a User Interface framework - for the presentation layer.You can write your service layer separately from the presentation layer as usual. So you can use whatever framework or mechanism you are familliar with in java or better yet just add more web services in a same way the old ones are published to preserve consistency.