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Author Archives: Biju Kunjummen

Thymeleaf – fragments and angularjs router partial views

java-interview-questions-answers

One more of the many cool features of thymeleaf is the ability to render fragments of templates – I have found this to be an especially useful feature to use with AngularJs. AngularJS $routeProvider or AngularUI router can be configured to return partial views for different “paths”, using thymeleaf to return these partial views works really well. Consider a simple ...

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Spring Integration Java DSL sample

spring-interview-questions-answers

A new Java based DSL has now been introduced for Spring Integration which makes it possible to define the Spring Integration message flows using pure java based configuration instead of using the Spring XML based configuration. I tried the DSL for a sample Integration flow that I have – I call it the Rube Goldberg flow, for it follows a ...

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Spring Rest Controller with angularjs resource

spring-interview-questions-answers

Angularjs ngResource is an angularjs module for interacting with REST based services. I used it recently for a small project with Spring MVC and wanted to document a configuration that worked well for me. The controller is run of the mill, it supports CRUD operations on a Hotel entity and supports the following methods:           POST ...

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Spring Scala based sample bean configuration

spring-interview-questions-answers

I have been using Spring Scala for a toy project for the last few days and I have to say that it is a fantastic project, it simplifies Spring configuration even further when compared to the already simple configuration purely based on Spring Java Config. Let me demonstrate this by starting with the Cake Pattern based sample here:     ...

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Spring Boot and Scala with sbt as the build tool

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Earlier I had blogged about using Scala with Spring Boot and how the combination just works. There was one issue with the previous approach though – the only way to run the earlier configuration was to build the project into a jar file and run the jar file.                 ./gradlew build java -jar ...

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Using Http Session with Spring based web applications

spring-interview-questions-answers

There are multiple ways to get hold of and use an Http session with a Spring based web application. This is a summarization based on an experience with a recent project. Approach 1 Just inject in HttpSession where it is required.         @Service public class ShoppingCartService { @Autowired private HttpSession httpSession; ... } Though surprising, since the ...

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Spring test with thymeleaf for views

spring-interview-questions-answers

I am a recent convert to thymeleaf for view templating in Spring based web applications, preferring it over jsp’s. All the arguments that thymeleaf documentation makes on why thymeleaf over jsp holds water and I am definitely sold. One of the big reasons for me, apart from being able to preview the template, is the way the view is rendered ...

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Memoization of Scala Streams

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I learnt the hard way that scala internally uses memoization with Streams. This was my first attempt at a solution to Euler Problem 5                 def from(n: Int): Stream[Int] = n #:: from(n + 1) def isDivisibleByRange(n: Int, r: Range) = { r.forall(n % _ == 0) } val a = from(21) val ...

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