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Re: how to loop over nested yaml file content?

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On 1/23/16 6:27 AM, Stefan Ram wrote:
> Mohammed Suleman khan <salmankhan0921@gmail.com> writes:
>> I am having a .yml file that has nested level navigation
>
> public final class Main
> {
>
>    private static final java.lang.String source =
>    "navigationItems:\n" +
>    "-\n" +
>    "  link: /features\n" +
>    "  label: Features\n" +
>    "-\n" +
>    "  link: /contact\n" +
>    "  label: Contact Us\n" +
>    "-\n" +
>    "  link: /about\n" +
>    "  label: About Us\n" +
>    "-\n" +
>    "  link: /services\n" +
>    "  label: Services\n" +
>    "  navigationItems:\n" +
>    "    -\n" +
>    "      link: /service-1\n" +
>    "      label: Service 1\n";
>
>    public static void main(String args[]) throws Exception
>    { final java.util.regex.Pattern p =
>      java.util.regex.Pattern.compile
>      ( "^ {6}([^ ].*)$", java.util.regex.Pattern.MULTILINE );
>      final java.util.regex.Matcher m = p.matcher( source );
>      while( m.find() )java.lang.System.out.println( m.group( 1 )); }}
>
> link: /service-1
> label: Service 1
>
Stefan: why are you using regex to parse Yaml? Yaml has a spec, and its 
far more complex than your regex suggests.

Mohammed:  The problem is that you're trying to represent a tree 
structure as a list.  Really you need:

class NavigationNode {
     private List<NavigationNode> children;
     private String label;
     private String link;
}


Then you can use recursion to go through the list.

Hopefully this helps.

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how to loop over nested yaml file content? Mohammed Suleman khan <salmankhan0921@gmail.com> - 2016-01-23 06:06 -0800
  Re: how to loop over nested yaml file content? Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2016-01-23 07:52 -0800
    Re: how to loop over nested yaml file content? Jeff Higgins <jeff@invalid.invalid> - 2016-01-23 16:28 +0000

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