Programming
Conditional Java Configurations in Spring Framework
Spring Framework offers very flexible means for binding application components. Externalizable properties, composite configuration, nested application contexts and profiles.
Sometimes, it is necessary to control whether particular beans or @Configuration
will be loaded or not. Spring Framework v.4.1.x does not provide that feature out of the box. But, hopefully, Spring allows conditional bean initialization (see @Profile
implementation and @Configurable
).
So, I created the annotation @Enabled
which allows me to control bean instantiation via properties.
@Enabled
indicates that a component is eligible for registration when evaluated expression is true. This annotation should be used in conjunction with Configuration and Bean annotations.
JDBC Driver Settings for Oracle RAC
If you are modifying your java application to use Oracle Real Application Clustered (RAC) Database instead of standard single-node database server (Express or Standard edition), then you need to modify settings of your JDBC driver.
JAX-WS with Custom SSLSocketFactory
It’s very easy to configure custom SSLSocketFactory for JAX-WS web-service: just specify custom property referring to SSLSocketFactory
bean.
But there is a nuance…
Useful Code Templates for Jetbrains Idea
Jetbrains Idea is a perfect IDE (sorry, Eclipse fans). But, like every tool, sometimes it needs some customization to fit your needs. Today I want to show how to adjust it’s code-generation templates.
When you generates a new class or method using Idea, it creates one using predefined templates. You may modify that template in “Settings -> File and Code templates” section.
WebJars: Easy Packaging Client Libraries
JSON Validation with JSON Schema
JSON has became a de-facto standard for webservices, replacing XML web services. It has native support in web browser clients.
That makes JSON is the standard of choice for UI-oriented services. It has a good support on mobile devices. Also, it provides smaller data payload size compared to XML and it’s very sufficient for high-load systems as it saves a traffic. But what is for data validation? For XML web services there is a XML Schema. It comes ti mind, that similar standard for JSON should be called “JSON Schema”. And it really exists!