Re: java.util.prefs.Preferences and arrays

From:
ram@zedat.fu-berlin.de (Stefan Ram)
Newsgroups:
comp.lang.java.programmer
Date:
29 Dec 2007 14:48:01 GMT
Message-ID:
<multiple-values-20071229154107@ram.dialup.fu-berlin.de>
Eric Sosman <esosman@ieee-dot-org.invalid> writes:

I've encountered two conventions, not specific to Java
but in other key=value "ini file" contexts:
- Composite value: "gods=Jupiter,Odin,Zeus"


  The library ?ram.jar? contains an implementation of ?Unotal?
  with support for mutiple values of a single key.

  Here is an example from the Junotal tutorial:

  Main.java

import java.lang.String;
import java.lang.System;
import de.dclj.ram.notation.unotal.Room;
import static de.dclj.ram.notation.unotal.RoomFromModule.room;

public final class Main
{ public static void main( final String argv[] )
  { System.out.println( room( "< a=b >" ).get( "a" ));
    System.out.println( room( "< a=b >" ).get( "a" ).getClass() );

    System.out.println( room( "< a=b a=c >" ).get( "a" ));
    System.out.println( room( "< a=b a=c >" ).get( "a" ).getClass() );

    System.out.println( room( "< >" ).getValues( "a" ));
    System.out.println( room( "< >" ).getValues( "a" ).getClass() );

    System.out.println( room( "< a=b >" ).getValues( "a" ));
    System.out.println( room( "< a=b >" ).getValues( "a" ).getClass() );

    System.out.println( room( "< a=b a=b >" ).getValues( "a" ));
    System.out.println( room( "< a=b a=b >" ).getValues( "a" ).getClass() );

    System.out.println( room( "< a=b a=c >" ).getValues( "a" ));
    System.out.println( room( "< a=b a=c >" ).getValues( "a" ).getClass() ); }}

  System.out

b
class de.dclj.ram.notation.unotal.StringValue

[b, c]
class de.dclj.ram.notation.unotal.SprayValue

[]
class de.dclj.ram.notation.unotal.SprayValue

[b]
class java.util.HashSet

[b]
class java.util.HashSet

[b, c]
class java.util.HashSet

  The Junotal tutorial

http://www.purl.org/stefan_ram/pub/junotal_tutorial

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