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I've been working with SonarQube for just a little I have downloaded the project from the https://docs.sonarqube.org/display/PLUG/Writing+Custom+Java+Rules+101 page, I jumped to create my own rules, but I still lack a lot more knowledge by how customizing them, I don't know how to visit the nodes and changing them depending on the element found on the syntax, the SonarQube page doesn't explain more than the custom exercise, is there a specific guide for this?
https://docs.sonarqube.org/display/PLUG/Writing+Custom+Java+Rules+101 exercise
This is done with AST, it's implemented with Visitor Pattern.
The easiest way is to check examples provided by SonarSource: https://github.com/SonarSource/sonar-custom-rules-examples
Some examples of AST can be found at Java Parser book
I have done some examples for old version 5.2, you can check them at: https://github.com/devwebcl/sonarqube-plugins-java-5.2
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I am working on a big project with a complex codebase written in java. I want to understand a particular piece of code and i thought getting a sequence diagram of the entry point method would give me a good idea. I use intelliJ and i looked for a plugin which could do this and i found 'SequencePlugin' but unfortunately it is not working in intelliJ 8.1.4. Can i achieve what i am trying to in any other way? Is there a standard approach to follow when trying to understand a complex codebase other than by debugging?
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I want to develop a small application in JAVA, for personal use, that solves the derivatives and integrals. Can you tell me some good library to do this, and some example?
Thanks
Commons Math contains the ability to integrate using different methods - see here, section 4.5. The example here shows you how to use the TrapezoidIntegrator, the others work pretty much in the same way.
SO post
Library reference hosted on google code.You can also use JLink with Mathematica to send your calculations part to mathematica and get appropriate results back.
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I'm looking for a Java based SCSS to CSS Converter to write a Jawr Preprocessor for this.
So it's important to keep comments for building Sprites with Jawr.
I just found SAC which seems to be a great base start writing one.
CSS Level 3 has to be supported - that's why CSS Parser isn't a choice.
If I have to write my own (which will be Open Source and hosted on GitHub for sure):
Is there any SCSS Parser? If not, can I write my own based on SAC as well?
Would anyone help me?
EDIT I just saw there's also a LESS Syntax which looks much better to me than SCSS. Alternatively or in addition to SCSS, LESS would be great as well.
I just found this awesome project: wro4j
EDIT: For Completeness: Jawr will implement these features in their next release as well.
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I am finding for the good resources to learn OpenCMS. Please provide the guideline/best practices to develop an OpenCMS based websites. Any kind help is appreciated.
There's a wiki.
There are books available. I've only read this one, which was helpful but is targeted more at improving an intermediate skillset rather than being an introduction.
There is also a mailing list.
Of course, you can also subscribe to the Stackoverflow OpenCMS tag feed, although it doesn't see a lot of action.
To get started, you should IMHO start with creating a simple site. The first thing you need will be a template.
There is a good article in the wiki about that subject:
http://www.opencms-wiki.org/wiki/Example_template_with_tree_menu
In the meantime documentation improved a lot and can be found on http://documentation.opencms.org/.
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Besides GWT out there, are there other Java to JavaScript Compiler. Currently all my work is done in Java and I heard of Java2Script too. Anyone out there knows other Java to JavaScript?
I believe qooxdoo has a java-javascript compiler. Since they have a similar framework call QWT Its similar to GWT but with their own widget set.
Nice list of ..->JavaScript compilers with special chapter dedicated to Java is available here: https://github.com/jashkenas/coffee-script/wiki/List-of-languages-that-compile-to-JS#javajvm
In GWT there will be lot of boiler plate codes and learning curve of GWT is high and hard to maintain your code.