.\" Automatically generated by Pod::Man 2.1801 (Pod::Simple 3.05) .\" .\" Standard preamble: .\" ======================================================================== .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \*(-- will .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left .\" double quote, and \*(R" will give a right double quote. \*(C+ will .\" give a nicer C++. Capital omega is used to do unbreakable dashes and .\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff, .\" nothing in troff, for use with C<>. .tr \(*W- .ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' .ie n \{\ . ds -- \(*W- . ds PI pi . if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch . if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch . ds L" "" . ds R" "" . ds C` "" . ds C' "" 'br\} .el\{\ . ds -- \|\(em\| . ds PI \(*p . ds L" `` . ds R" '' 'br\} .\" .\" Escape single quotes in literal strings from groff's Unicode transform. .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" .\" If the F register is turned on, we'll generate index entries on stderr for .\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index .\" entries marked with X<> in POD. Of course, you'll have to process the .\" output yourself in some meaningful fashion. .ie \nF \{\ . de IX . tm Index:\\$1\t\\n%\t"\\$2" .. . nr % 0 . rr F .\} .el \{\ . de IX .. .\} .\" .\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2). .\" Fear. Run. Save yourself. No user-serviceable parts. . \" fudge factors for nroff and troff .if n \{\ . ds #H 0 . ds #V .8m . ds #F .3m . ds #[ \f1 . ds #] \fP .\} .if t \{\ . ds #H ((1u-(\\\\n(.fu%2u))*.13m) . ds #V .6m . ds #F 0 . ds #[ \& . ds #] \& .\} . \" simple accents for nroff and troff .if n \{\ . ds ' \& . ds ` \& . ds ^ \& . ds , \& . ds ~ ~ . ds / .\} .if t \{\ . ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u" . ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u' . ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u' . ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u' . ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u' . ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' .\} . \" troff and (daisy-wheel) nroff accents .ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V' .ds 8 \h'\*(#H'\(*b\h'-\*(#H' .ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#] .ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H' .ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u' .ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#] .ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#] .ds ae a\h'-(\w'a'u*4/10)'e .ds Ae A\h'-(\w'A'u*4/10)'E . \" corrections for vroff .if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u' .if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u' . \" for low resolution devices (crt and lpr) .if \n(.H>23 .if \n(.V>19 \ \{\ . ds : e . ds 8 ss . ds o a . ds d- d\h'-1'\(ga . ds D- D\h'-1'\(hy . ds th \o'bp' . ds Th \o'LP' . ds ae ae . ds Ae AE .\} .rm #[ #] #H #V #F C .\" ======================================================================== .\" .IX Title "Object::Declare 3pm" .TH Object::Declare 3pm "2007-01-27" "perl v5.10.0" "User Contributed Perl Documentation" .\" For nroff, turn off justification. Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" Object::Declare \- Declarative object constructor .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& use Object::Declare [\*(AqMyApp::Column\*(Aq, \*(AqMyApp::Param\*(Aq]; \& \& my %objects = declare { \& \& param foo => \& !is global, \& is immutable, \& valid_values are qw( more values ); \& \& column bar => \& field1 is \*(Aqvalue\*(Aq, \& field2 is \*(Aqsome_other_value\*(Aq, \& sub_params are param( is happy ), param ( is sad ); \& \& }; \& \& print $objects{foo}; # a MyApp::Param object \& print $objects{bar}; # a MyApp::Column object \& \& # Assuming that MyApp::Column::new simply blesses into a hash... \& print $objects{bar}{sub_params}[0]; # a MyApp::Param object \& print $objects{bar}{sub_params}[1]; # a MyApp::Param object .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" This module exports one function, \f(CW\*(C`declare\*(C'\fR, for building named objects with a declarative syntax, similar to how Jifty::DBI::Schema defines its columns. .PP In list context, \f(CW\*(C`declare\*(C'\fR returns a list of name/object pairs in the order of declaration (allowing duplicates), suitable for putting into a hash. In scalar context, \f(CW\*(C`declare\*(C'\fR returns a hash reference. .PP Using a flexible \f(CW\*(C`import\*(C'\fR interface, one can change exported helper functions names (\fIdeclarator\fR), words to link labels and values together (\fIcopula\fR), and the table of named classes to declare (\fImapping\fR): .PP .Vb 10 \& use Object::Declare \& declarator => [\*(Aqdeclare\*(Aq], # list of declarators \& copula => { # list of words, or a map \& is => \*(Aq\*(Aq, # from copula to label prefixes, \& are => \*(Aq\*(Aq, # or to callback that e.g. turns \& has => sub { has => @_ }, # "has X" to "has is X" and \& # "X has 1" to "has is [X => 1]" \& }, \& aliases => { # list of label aliases: \& more => \*(Aqless\*(Aq, # turns "is more" into "is less" \& # and "more is 1" into "less is 1" \& }, \& mapping => { \& column => \*(AqMyApp::Column\*(Aq, # class name to call \->new to \& param => sub { # arbitrary coderef also works \& bless(\e@_, \*(AqMyApp::Param\*(Aq); \& }, \& }; .Ve .PP After the declarator block finishes execution, all helper functions are removed from the package. Same-named functions (such as \f(CW&is\fR and \f(CW&are\fR) that existed before the declarator's execution are restored correctly. .SH "NOTES" .IX Header "NOTES" If you export the declarator to another package via \f(CW@EXPORT\fR, be sure to export all mapping keys as well. For example, this will work for the example above: .PP .Vb 1 \& our @EXPORT = qw( declare column param ); .Ve .PP But this will not: .PP .Vb 1 \& our @EXPORT = qw( declare ); .Ve .PP The copula are not turned into functions, so there is no need to export them. .SH "AUTHORS" .IX Header "AUTHORS" Audrey Tang .SH "COPYRIGHT" .IX Header "COPYRIGHT" Copyright 2006, 2007 by Audrey Tang . .PP This software is released under the \s-1MIT\s0 license cited below. .ie n .SS "The ""\s-1MIT\s0"" License" .el .SS "The ``\s-1MIT\s0'' License" .IX Subsection "The MIT License" Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the \*(L"Software\*(R"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: .PP The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. .PP \&\s-1THE\s0 \s-1SOFTWARE\s0 \s-1IS\s0 \s-1PROVIDED\s0 \*(L"\s-1AS\s0 \s-1IS\s0\*(R", \s-1WITHOUT\s0 \s-1WARRANTY\s0 \s-1OF\s0 \s-1ANY\s0 \s-1KIND\s0, \s-1EXPRESS\s0 \&\s-1OR\s0 \s-1IMPLIED\s0, \s-1INCLUDING\s0 \s-1BUT\s0 \s-1NOT\s0 \s-1LIMITED\s0 \s-1TO\s0 \s-1THE\s0 \s-1WARRANTIES\s0 \s-1OF\s0 \s-1MERCHANTABILITY\s0, \&\s-1FITNESS\s0 \s-1FOR\s0 A \s-1PARTICULAR\s0 \s-1PURPOSE\s0 \s-1AND\s0 \s-1NONINFRINGEMENT\s0. \s-1IN\s0 \s-1NO\s0 \s-1EVENT\s0 \s-1SHALL\s0 \&\s-1THE\s0 \s-1AUTHORS\s0 \s-1OR\s0 \s-1COPYRIGHT\s0 \s-1HOLDERS\s0 \s-1BE\s0 \s-1LIABLE\s0 \s-1FOR\s0 \s-1ANY\s0 \s-1CLAIM\s0, \s-1DAMAGES\s0 \s-1OR\s0 \s-1OTHER\s0 \&\s-1LIABILITY\s0, \s-1WHETHER\s0 \s-1IN\s0 \s-1AN\s0 \s-1ACTION\s0 \s-1OF\s0 \s-1CONTRACT\s0, \s-1TORT\s0 \s-1OR\s0 \s-1OTHERWISE\s0, \s-1ARISING\s0 \&\s-1FROM\s0, \s-1OUT\s0 \s-1OF\s0 \s-1OR\s0 \s-1IN\s0 \s-1CONNECTION\s0 \s-1WITH\s0 \s-1THE\s0 \s-1SOFTWARE\s0 \s-1OR\s0 \s-1THE\s0 \s-1USE\s0 \s-1OR\s0 \s-1OTHER\s0 \&\s-1DEALINGS\s0 \s-1IN\s0 \s-1THE\s0 \s-1SOFTWARE\s0.