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SQL::Translator::Role:UsertContributed Perl SQL::Translator::Role::ListAttr(3)

NAME
       SQL::Translator::Role::ListAttr - context-sensitive list	attributes

SYNOPSIS
	   package Foo;
	       use Moo;
	       use SQL::Translator::Role::ListAttr;

	       with ListAttr foo => ( uniq => 1, append	=> 1 );

DESCRIPTION
       This package provides a variable	Moo::Role for context-sensitive	list
       attributes.

FUNCTIONS
   ListAttr $name => %parameters;
       Returns a Moo::Role providing an	arrayref attribute named $name,	and
       wrapping	the accessor to	provide	context-sensitivity both for setting
       and getting.  If	no "builder" or	"default" is provided, the default
       value is	the empty list.

       On setting, the arguments are parsed using "parse_list_arg" in
       SQL::Translator::Utils, and the accessor	will return an array reference
       or a list, depending on context.

       Parameters

       append
	   If true, the	setter will append arguments to	the existing ones,
	   rather than replacing them.

       uniq
	   If true, duplicate items will be removed, keeping the first one
	   seen.

       may_throw
	   If accessing	the attribute might throw an exception (e.g. from a
	   "builder" or	"isa" check), this should be set to make the accessor
	   store the exception using SQL::Translator::Role::Error and return
	   undef.

       undef_if_empty
	   If true, and	the list is empty, the accessor	will return "undef"
	   instead of a	reference to an	empty in scalar	context.

       Unknown parameters are passed through to	the has	call for the
       attribute.

SEE ALSO
       SQL::Translator::Utils
       SQL::Translator::Role::Error

perl v5.24.1			  2013-06-28SQL::Translator::Role::ListAttr(3)

NAME | SYNOPSIS | DESCRIPTION | FUNCTIONS | SEE ALSO

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