Merging all commits in repo to one

Today note copied from Stack Overflow (please consider of backuping your repo before this):

git log --oneline

Copy SHA of first commit and next (it's reset your local repo state withouch changing files):

git reset --soft <SHA of first commit>

Check that everything to commit is green:

git status

Commit your changes (--amend fixes last commit), you can change commit message by adding "-m <your new message>":

git commit --amend

Push your changes:

git push --force

Custom and localized messages spring validation API

Put this code inside your web configuration:

    @Bean
    public MessageSource messageSource() {
        return new MessageSourceAutoConfiguration().messageSource();
    }
    
    @Bean(name = "validator")
    public LocalValidatorFactoryBean validator()
    {
        LocalValidatorFactoryBean bean = new LocalValidatorFactoryBean();
        bean.setValidationMessageSource(messageSource());
        return bean;
    }
     
    @Override
    public Validator getValidator()
    {
        return validator();
    }

and in validation annotation use:

@NotBlank(message = "{not.blank.message}")
private String foo;

In your classloader put file /messages_en.properties:

not.blank.message=Custom not blank message

Wykorzystanie Dynamic Proxy jako narzędzia diagnostycznego

Tylko link :)
http://pgoralik.blogspot.com/2012/08/wykorzystanie-dynamic-proxy-jako.html

Single quote and xargs in Bash

xargs strips single quote mark from input, so if you want pass some data by xargs you will se error:

user:~/$ echo "This is single quote: '" | xargs -I {} echo {}
xargs: unmatched single quote; by default quotes are special to xargs unless you use the -0 option

To do this properly it is necessary to add "-0" parameter:

user:~/$ echo "This is single quote: '" | xargs -0 -I {} echo {}
This is single quote: '

Or use sed:

user:~/$ echo "This is single quote: '" | sed "s/'/\\\\'/g" | xargs -I {} echo {}
This is single quote: '

Et voilà!

Start HTTP server to serve files from current directory

Just type:

python -m SimpleHTTPServer

or:

server -p 3000

Please install before:

npm install serve -g

PrimeFaces remoteCommand with parameters

HTML view:

<p:remoteCommand name="remoteCommandName" actionListener="#{mBean.remoteCommandActionlistener}" />

Backing bean code:

public void remoteCommandActionlistener() {
  String param1 = FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get("param1");
  String param2 = FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get("param2");
  System.out.println("param1: " + param1 + ", param2: " + param2);
}

JavaScript call:

remoteCommandName([{name: 'param1', value: 'value1'}, {name: 'param2', value: 'value2'}])