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SLONIK DEFINE(7)             Slonik Meta Commands             SLONIK DEFINE(7)


NAME

       DEFINE - Defining a named symbol


SYNOPSIS

       define  [  name  ] [  value  ]


DESCRIPTION

       This defines a named symbol.  Symbol names must follow the slonik rules
       for constructing identifiers, by starting with a letter, followed by
       letters, numbers, and underscores.

       Symbol values may contain spaces and may recursively contain symbol
       references.

       Symbols are referenced by using a ``@'' followed by the symbol name.
       Note that symbol referencing is suppressed inside string literals.


EXAMPLE

       define    cluster movies;
       define    sakai   1;
       define    chen    2;
       define    fqn     fully qualified name;

       cluster name = @cluster;
       node @sakai admin conninfo = 'service=sakai-replication';
       node @chen  admin conninfo = 'service=chen-replication';
       define setMovies    id = 1;
       define sakaiMovies  @setMovies, origin = @sakai;

       create set ( @sakaiMovies, comment = 'movies' );

       set add table( set @sakaiMovies, id = 1, @fqn = 'public.customers',
                      comment = 'sakai customers' );
       set add table( set @sakaiMovies, id = 2, @fqn = 'public.tapes',
                      comment = 'sakai tapes' );
       echo 'But @sakaiMovies will display as a string, and is not expanded';


VERSION INFORMATION

       This command was introduced in Slony-I 1.1

                                18 January 2015               SLONIK DEFINE(7)

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