X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FSQL%2FTranslator.pm;h=988e1175a01ae4f24a35bc85ed0077099390b78f;hb=90097ddd3b029720062c30118f05fdf3cc241cd3;hp=a50fa5f017173d4bc5bda8f8ff59236a07fe8008;hpb=af05a25f8b28362e6952551e60c92642962cbd75;p=dbsrgits%2FSQL-Translator.git diff --git a/lib/SQL/Translator.pm b/lib/SQL/Translator.pm index a50fa5f..988e117 100644 --- a/lib/SQL/Translator.pm +++ b/lib/SQL/Translator.pm @@ -1,469 +1,299 @@ package SQL::Translator; -# ---------------------------------------------------------------------- -# $Id: Translator.pm,v 1.41 2003-08-20 22:19:14 kycl4rk Exp $ -# ---------------------------------------------------------------------- -# Copyright (C) 2003 Ken Y. Clark , -# darren chamberlain , -# Chris Mungall -# -# This program is free software; you can redistribute it and/or -# modify it under the terms of the GNU General Public License as -# published by the Free Software Foundation; version 2. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -# General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program; if not, write to the Free Software -# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA -# 02111-1307 USA -# ------------------------------------------------------------------- - -use strict; -use vars qw( $VERSION $REVISION $DEFAULT_SUB $DEBUG $ERROR ); -use base 'Class::Base'; +use Moo; +our ( $DEFAULT_SUB, $DEBUG, $ERROR ); -require 5.004; - -$VERSION = '0.02'; -$REVISION = sprintf "%d.%02d", q$Revision: 1.41 $ =~ /(\d+)\.(\d+)/; +our $VERSION = '0.11013_02'; $DEBUG = 0 unless defined $DEBUG; $ERROR = ""; -use Carp qw(carp); +use Carp qw(carp croak); -use Class::Base; +use Data::Dumper; +use File::Find; use File::Spec::Functions qw(catfile); use File::Basename qw(dirname); use IO::Dir; +use Sub::Quote qw(quote_sub); +use SQL::Translator::Producer; use SQL::Translator::Schema; +use SQL::Translator::Utils qw(throw ex2err carp_ro); -# ---------------------------------------------------------------------- -# The default behavior is to "pass through" values (note that the -# SQL::Translator instance is the first value ($_[0]), and the stuff -# to be parsed is the second value ($_[1]) -# ---------------------------------------------------------------------- $DEFAULT_SUB = sub { $_[0]->schema } unless defined $DEFAULT_SUB; -# ---------------------------------------------------------------------- -# init([ARGS]) -# The constructor. -# -# new takes an optional hash of arguments. These arguments may -# include a parser, specified with the keys "parser" or "from", -# and a producer, specified with the keys "producer" or "to". -# -# The values that can be passed as the parser or producer are -# given directly to the parser or producer methods, respectively. -# See the appropriate method description below for details about -# what each expects/accepts. -# ---------------------------------------------------------------------- -sub init { - my ( $self, $config ) = @_; - # - # Set the parser and producer. - # +with qw( + SQL::Translator::Role::Debug + SQL::Translator::Role::Error + SQL::Translator::Role::BuildArgs +); + +around BUILDARGS => sub { + my $orig = shift; + my $self = shift; + my $config = $self->$orig(@_); + # If a 'parser' or 'from' parameter is passed in, use that as the # parser; if a 'producer' or 'to' parameter is passed in, use that # as the producer; both default to $DEFAULT_SUB. - # - $self->parser ($config->{'parser'} || $config->{'from'} || $DEFAULT_SUB); - $self->producer($config->{'producer'} || $config->{'to'} || $DEFAULT_SUB); + $config->{parser} ||= $config->{from} if defined $config->{from}; + $config->{producer} ||= $config->{to} if defined $config->{to}; - # - # Set up callbacks for formatting of pk,fk,table,package names in producer - # - $self->format_table_name($config->{'format_table_name'}); - $self->format_package_name($config->{'format_package_name'}); - $self->format_fk_name($config->{'format_fk_name'}); - $self->format_pk_name($config->{'format_pk_name'}); + $config->{filename} ||= $config->{file} if defined $config->{file}; - # - # Set the parser_args and producer_args - # - for my $pargs ( qw[ parser_args producer_args ] ) { - $self->$pargs( $config->{$pargs} ) if defined $config->{ $pargs }; - } + my $quote; + if (defined $config->{quote_identifiers}) { + $quote = $config->{quote_identifiers}; - # - # Set the data source, if 'filename' or 'file' is provided. - # - $config->{'filename'} ||= $config->{'file'} || ""; - $self->filename( $config->{'filename'} ) if $config->{'filename'}; - - # - # Finally, if there is a 'data' parameter, use that in - # preference to filename and file - # - if ( my $data = $config->{'data'} ) { - $self->data( $data ); + for (qw/quote_table_names quote_field_names/) { + carp "Ignoring deprecated parameter '$_', since 'quote_identifiers' is supplied" + if defined $config->{$_} + } } + # Legacy one set the other is not + elsif ( + defined $config->{'quote_table_names'} + xor + defined $config->{'quote_field_names'} + ) { + if (defined $config->{'quote_table_names'}) { + carp "Explicitly disabling the deprecated 'quote_table_names' implies disabling 'quote_identifiers' which in turn implies disabling 'quote_field_names'" + unless $config->{'quote_table_names'}; + $quote = $config->{'quote_table_names'} ? 1 : 0; + } + else { + carp "Explicitly disabling the deprecated 'quote_field_names' implies disabling 'quote_identifiers' which in turn implies disabling 'quote_table_names'" + unless $config->{'quote_field_names'}; + $quote = $config->{'quote_field_names'} ? 1 : 0; + } + } + # Legacy both are set + elsif(defined $config->{'quote_table_names'}) { + croak 'Setting quote_table_names and quote_field_names to conflicting values is no longer supported' + if ($config->{'quote_table_names'} xor $config->{'quote_field_names'}); - # - # Set various other options. - # - $self->{'debug'} = defined $config->{'debug'} ? $config->{'debug'} : $DEBUG; - - $self->add_drop_table( $config->{'add_drop_table'} ); - - $self->no_comments( $config->{'no_comments'} ); + $quote = $config->{'quote_table_names'} ? 1 : 0; + } - $self->show_warnings( $config->{'show_warnings'} ); + $config->{quote_identifiers} = $quote if defined $quote; - $self->trace( $config->{'trace'} ); + return $config; +}; - $self->validate( $config->{'validate'} ); +sub BUILD { + my ($self) = @_; + # Make sure all the tool-related stuff is set up + foreach my $tool (qw(producer parser)) { + $self->$tool($self->$tool); + } +} - return $self; +has $_ => ( + is => 'rw', + default => quote_sub(q{ 0 }), + coerce => quote_sub(q{ $_[0] ? 1 : 0 }), +) foreach qw(add_drop_table no_comments show_warnings trace validate); + +# quote_identifiers is on by default, use a 0-but-true as indicator +# so we can allow individual producers to change the default +has quote_identifiers => ( + is => 'rw', + default => quote_sub(q{ '0E0' }), + coerce => quote_sub(q{ $_[0] || 0 }), +); + +sub quote_table_names { + (@_ > 1 and ($_[1] xor $_[0]->quote_identifiers) ) + ? croak 'Using quote_table_names as a setter is no longer supported' + : $_[0]->quote_identifiers; } -# ---------------------------------------------------------------------- -# add_drop_table([$bool]) -# ---------------------------------------------------------------------- -sub add_drop_table { - my $self = shift; - if ( defined (my $arg = shift) ) { - $self->{'add_drop_table'} = $arg ? 1 : 0; - } - return $self->{'add_drop_table'} || 0; +sub quote_field_names { + (@_ > 1 and ($_[1] xor $_[0]->quote_identifiers) ) + ? croak 'Using quote_field_names as a setter is no longer supported' + : $_[0]->quote_identifiers; } -# ---------------------------------------------------------------------- -# no_comments([$bool]) -# ---------------------------------------------------------------------- -sub no_comments { - my $self = shift; - my $arg = shift; - if ( defined $arg ) { - $self->{'no_comments'} = $arg ? 1 : 0; +after quote_identifiers => sub { + if (@_ > 1) { + # synchronize for old code reaching directly into guts + $_[0]->{quote_table_names} + = $_[0]->{quote_field_names} + = $_[1] ? 1 : 0; } - return $self->{'no_comments'} || 0; -} +}; +has producer => ( is => 'rw', default => sub { $DEFAULT_SUB } ); -# ---------------------------------------------------------------------- -# producer([$producer_spec]) -# -# Get or set the producer for the current translator. -# ---------------------------------------------------------------------- -sub producer { - my $self = shift; +around producer => sub { + my $orig = shift; + shift->_tool({ + orig => $orig, + name => 'producer', + path => "SQL::Translator::Producer", + default_sub => "produce", + }, @_); +}; - # producer as a mutator - if (@_) { - my $producer = shift; +has producer_type => ( is => 'rwp', init_arg => undef ); - # Passed a module name (string containing "::") - if ($producer =~ /::/) { - my $func_name; +around producer_type => carp_ro('producer_type'); - # Module name was passed directly - # We try to load the name; if it doesn't load, there's - # a possibility that it has a function name attached to - # it. - if (load($producer)) { - $func_name = "produce"; - } +has producer_args => ( is => 'rw', default => quote_sub(q{ +{} }) ); - # Module::function was passed - else { - # Passed Module::Name::function; try to recover - my @func_parts = split /::/, $producer; - $func_name = pop @func_parts; - $producer = join "::", @func_parts; - - # If this doesn't work, then we have a legitimate - # problem. - load($producer) or die "Can't load $producer: $@"; - } +around producer_args => sub { + my $orig = shift; + shift->_args($orig, @_); +}; - # get code reference and assign - $self->{'producer'} = \&{ "$producer\::$func_name" }; - $self->{'producer_type'} = $producer; - $self->debug("Got producer: $producer\::$func_name\n"); - } +has parser => ( is => 'rw', default => sub { $DEFAULT_SUB } ); - # passed an anonymous subroutine reference - elsif (isa($producer, 'CODE')) { - $self->{'producer'} = $producer; - $self->{'producer_type'} = "CODE"; - $self->debug("Got producer: code ref\n"); - } +around parser => sub { + my $orig = shift; + shift->_tool({ + orig => $orig, + name => 'parser', + path => "SQL::Translator::Parser", + default_sub => "parse", + }, @_); +}; - # passed a string containing no "::"; relative package name - else { - $producer =~ s/-/::/g; - my $Pp = sprintf "SQL::Translator::Producer::$producer"; - load($Pp) or die "Can't load $Pp: $@"; - $self->{'producer'} = \&{ "$Pp\::produce" }; - $self->{'producer_type'} = $Pp; - $self->debug("Got producer: $Pp\n"); - } +has parser_type => ( is => 'rwp', init_arg => undef ); - # At this point, $self->{'producer'} contains a subroutine - # reference that is ready to run +around parser_type => carp_ro('parser_type'); - # Anything left? If so, it's producer_args - $self->producer_args(@_) if (@_); - } +has parser_args => ( is => 'rw', default => quote_sub(q{ +{} }) ); - return $self->{'producer'}; +around parser_args => sub { + my $orig = shift; + shift->_args($orig, @_); }; -# ---------------------------------------------------------------------- -# producer_type() -# -# producer_type is an accessor that allows producer subs to get -# information about their origin. This is poptentially important; -# since all producer subs are called as subroutine references, there is -# no way for a producer to find out which package the sub lives in -# originally, for example. -# ---------------------------------------------------------------------- -sub producer_type { $_[0]->{'producer_type'} } - -# ---------------------------------------------------------------------- -# producer_args([\%args]) -# -# Arbitrary name => value pairs of paramters can be passed to a -# producer using this method. -# -# If the first argument passed in is undef, then the hash of arguments -# is cleared; all subsequent elements are added to the hash of name, -# value pairs stored as producer_args. -# ---------------------------------------------------------------------- -sub producer_args { - my $self = shift; - return $self->_args("producer", @_); -} - -# ---------------------------------------------------------------------- -# parser([$parser_spec]) -# ---------------------------------------------------------------------- -sub parser { - my $self = shift; - - # parser as a mutator - if (@_) { - my $parser = shift; - - # Passed a module name (string containing "::") - if ($parser =~ /::/) { - my $func_name; - - # Module name was passed directly - # We try to load the name; if it doesn't load, there's - # a possibility that it has a function name attached to - # it. - if (load($parser)) { - $func_name = "parse"; +has filters => ( + is => 'rw', + default => quote_sub(q{ [] }), + coerce => sub { + my @filters; + # Set. Convert args to list of [\&code,@args] + foreach (@{$_[0]||[]}) { + my ($filt,@args) = ref($_) eq "ARRAY" ? @$_ : $_; + if ( isa($filt,"CODE") ) { + push @filters, [$filt,@args]; + next; } - - # Module::function was passed else { - # Passed Module::Name::function; try to recover - my @func_parts = split /::/, $parser; - $func_name = pop @func_parts; - $parser = join "::", @func_parts; - - # If this doesn't work, then we have a legitimate - # problem. - load($parser) or die "Can't load $parser: $@"; - } - - # get code reference and assign - $self->{'parser'} = \&{ "$parser\::$func_name" }; - $self->{'parser_type'} = $parser; - $self->debug("Got parser: $parser\::$func_name\n"); + __PACKAGE__->debug("Adding $filt filter. Args:".Dumper(\@args)."\n"); + $filt = _load_sub("$filt\::filter", "SQL::Translator::Filter") + || throw(__PACKAGE__->error); + push @filters, [$filt,@args]; + } } + return \@filters; + }, +); - # passed an anonymous subroutine reference - elsif ( isa( $parser, 'CODE' ) ) { - $self->{'parser'} = $parser; - $self->{'parser_type'} = "CODE"; - $self->debug("Got parser: code ref\n"); - } - - # passed a string containing no "::"; relative package name - else { - $parser =~ s/-/::/g; - my $Pp = "SQL::Translator::Parser::$parser"; - load( $Pp ) or die "Can't load $Pp: $@"; - $self->{'parser'} = \&{ "$Pp\::parse" }; - $self->{'parser_type'} = $Pp; - $self->debug("Got parser: $Pp\n"); - } - - # - # At this point, $self->{'parser'} contains a subroutine - # reference that is ready to run - # - $self->parser_args( @_ ) if (@_); - } - - return $self->{'parser'}; -} - -# ---------------------------------------------------------------------- -sub parser_type { $_[0]->{'parser_type'} } - -sub parser_args { +around filters => sub { + my $orig = shift; my $self = shift; - return $self->_args("parser", @_); -} - -sub show_warnings { - my $self = shift; - my $arg = shift; - if ( defined $arg ) { - $self->{'show_warnings'} = $arg ? 1 : 0; - } - return $self->{'show_warnings'} || 0; -} - + return @{$self->$orig([@{$self->$orig}, @_])} if @_; + return @{$self->$orig}; +}; -# filename - get or set the filename -sub filename { - my $self = shift; - if (@_) { +has filename => ( + is => 'rw', + isa => sub { my $filename = shift; if (-d $filename) { - my $msg = "Cannot use directory '$filename' as input source"; - return $self->error($msg); - } elsif (ref($filename) eq 'ARRAY') { - $self->{'filename'} = $filename; - $self->debug("Got array of files: ".join(', ',@$filename)."\n"); - } elsif (-f _ && -r _) { - $self->{'filename'} = $filename; - $self->debug("Got filename: '$self->{'filename'}'\n"); - } else { - my $msg = "Cannot use '$filename' as input source: ". - "file does not exist or is not readable."; - return $self->error($msg); + throw("Cannot use directory '$filename' as input source"); + } elsif (not -f _ && -r _) { + throw("Cannot use '$filename' as input source: ". + "file does not exist or is not readable."); } - } - - $self->{'filename'}; -} - -# ---------------------------------------------------------------------- -# data([$data]) -# -# if $self->{'data'} is not set, but $self->{'filename'} is, then -# $self->{'filename'} is opened and read, with the results put into -# $self->{'data'}. -# ---------------------------------------------------------------------- -sub data { - my $self = shift; - - # Set $self->{'data'} based on what was passed in. We will - # accept a number of things; do our best to get it right. - if (@_) { + }, +); + +around filename => \&ex2err; + +has data => ( + is => 'rw', + builder => 1, + lazy => 1, + coerce => sub { + # Set $self->data based on what was passed in. We will + # accept a number of things; do our best to get it right. my $data = shift; - if (isa($data, "SCALAR")) { - $self->{'data'} = $data; + if (isa($data, 'ARRAY')) { + $data = join '', @$data; } - else { - if (isa($data, 'ARRAY')) { - $data = join '', @$data; - } - elsif (isa($data, 'GLOB')) { - local $/; - $data = <$data>; - } - elsif (! ref $data && @_) { - $data = join '', $data, @_; - } - $self->{'data'} = \$data; + elsif (isa($data, 'GLOB')) { + seek ($data, 0, 0) if eof ($data); + local $/; + $data = <$data>; } + return isa($data, 'SCALAR') ? $data : \$data; + }, +); + +around data => sub { + my $orig = shift; + my $self = shift; + + if (@_ > 1 && !ref $_[0]) { + return $self->$orig(\join('', @_)); + } + elsif (@_) { + return $self->$orig(@_); } + return ex2err($orig, $self); +}; +sub _build_data { + my $self = shift; # If we have a filename but no data yet, populate. - if (not $self->{'data'} and my $filename = $self->filename) { + if (my $filename = $self->filename) { $self->debug("Opening '$filename' to get contents.\n"); - local *FH; local $/; my $data; - my @files = ref($filename) eq 'ARRAY' ? @$filename : ($filename); + my @files = ref($filename) eq 'ARRAY' ? @$filename : ($filename); - foreach my $file (@files) { - unless (open FH, $file) { - return $self->error("Can't read file '$file': $!"); - } + foreach my $file (@files) { + open my $fh, '<', $file + or throw("Can't read file '$file': $!"); - $data .= ; + $data .= <$fh>; - unless (close FH) { - return $self->error("Can't close file '$file': $!"); - } - } + close $fh or throw("Can't close file '$file': $!"); + } - $self->{'data'} = \$data; + return \$data; } - - return $self->{'data'}; -} - -# ---------------------------------------------------------------------- -sub reset { -# -# Deletes the existing Schema object so that future calls to translate -# don't append to the existing. -# - my $self = shift; - $self->{'schema'} = undef; - return 1; } -# ---------------------------------------------------------------------- -sub schema { -# -# Returns the SQL::Translator::Schema object -# - my $self = shift; - - unless ( defined $self->{'schema'} ) { - $self->{'schema'} = SQL::Translator::Schema->new; - } +has schema => ( + is => 'lazy', + init_arg => undef, + clearer => 'reset', + predicate => '_has_schema', +); - return $self->{'schema'}; -} +around schema => carp_ro('schema'); -# ---------------------------------------------------------------------- -sub trace { +around reset => sub { + my $orig = shift; my $self = shift; - my $arg = shift; - if ( defined $arg ) { - $self->{'trace'} = $arg ? 1 : 0; - } - return $self->{'trace'} || 0; -} + $self->$orig(@_); + return 1 +}; + +sub _build_schema { SQL::Translator::Schema->new(translator => shift) } -# ---------------------------------------------------------------------- -# translate([source], [\%args]) -# -# translate does the actual translation. The main argument is the -# source of the data to be translated, which can be a filename, scalar -# reference, or glob reference. -# -# Alternatively, translate takes optional arguements, which are passed -# to the appropriate places. Most notable of these arguments are -# parser and producer, which can be used to set the parser and -# producer, respectively. This is the applications last chance to set -# these. -# -# translate returns a string. -# ---------------------------------------------------------------------- sub translate { my $self = shift; my ($args, $parser, $parser_type, $producer, $producer_type); - my ($parser_output, $producer_output); + my ($parser_output, $producer_output, @producer_output); # Parse arguments - if (@_ == 1) { + if (@_ == 1) { # Passed a reference to a hash? if (isa($_[0], 'HASH')) { # yep, a hashref @@ -526,9 +356,6 @@ sub translate { # Get the data. # ---------------------------------------------------------------- my $data = $self->data; - unless (ref($data) eq 'SCALAR' and length $$data) { - return $self->error("Empty data file!"); - } # ---------------------------------------------------------------- # Local reference to the parser subroutine @@ -549,13 +376,15 @@ sub translate { $producer_type = $self->producer_type; # ---------------------------------------------------------------- - # Execute the parser, then execute the producer with that output. + # Execute the parser, the filters and then execute the producer. # Allowances are made for each piece to die, or fail to compile, # since the referenced subroutines could be almost anything. In # the future, each of these might happen in a Safe environment, # depending on how paranoid we want to be. # ---------------------------------------------------------------- - unless ( defined $self->{'schema'} ) { + + # Run parser + unless ( $self->_has_schema ) { eval { $parser_output = $parser->($self, $$data) }; if ($@ || ! $parser_output) { my $msg = sprintf "translate: Error with parser '%s': %s", @@ -563,52 +392,47 @@ sub translate { return $self->error($msg); } } + $self->debug("Schema =\n", Dumper($self->schema), "\n"); + # Validate the schema if asked to. if ($self->validate) { my $schema = $self->schema; return $self->error('Invalid schema') unless $schema->is_valid; } - eval { $producer_output = $producer->($self) }; - if ($@ || ! $producer_output) { - my $msg = sprintf "translate: Error with producer '%s': %s", - $producer_type, ($@) ? $@ : " no results"; + # Run filters + my $filt_num = 0; + foreach ($self->filters) { + $filt_num++; + my ($code,@args) = @$_; + eval { $code->($self->schema, @args) }; + my $err = $@ || $self->error || 0; + return $self->error("Error with filter $filt_num : $err") if $err; + } + + # Run producer + # Calling wantarray in the eval no work, wrong scope. + my $wantarray = wantarray ? 1 : 0; + eval { + if ($wantarray) { + @producer_output = $producer->($self); + } else { + $producer_output = $producer->($self); + } + }; + if ($@ || !( $producer_output || @producer_output)) { + my $err = $@ || $self->error || "no results"; + my $msg = "translate: Error with producer '$producer_type': $err"; return $self->error($msg); } - return $producer_output; + return wantarray ? @producer_output : $producer_output; } -# ---------------------------------------------------------------------- -# list_parsers() -# -# Hacky sort of method to list all available parsers. This has -# several problems: -# -# - Only finds things in the SQL::Translator::Parser namespace -# -# - Only finds things that are located in the same directory -# as SQL::Translator::Parser. Yeck. -# -# This method will fail in several very likely cases: -# -# - Parser modules in different namespaces -# -# - Parser modules in the SQL::Translator::Parser namespace that -# have any XS componenets will be installed in -# arch_lib/SQL/Translator. -# -# ---------------------------------------------------------------------- sub list_parsers { return shift->_list("parser"); } -# ---------------------------------------------------------------------- -# list_producers() -# -# See notes for list_parsers(), above; all the problems apply to -# list_producers as well. -# ---------------------------------------------------------------------- sub list_producers { return shift->_list("producer"); } @@ -625,12 +449,7 @@ sub list_producers { # ---------------------------------------------------------------------- sub _args { my $self = shift; - my $type = shift; - $type = "${type}_args" unless $type =~ /_args$/; - - unless (defined $self->{$type} && isa($self->{$type}, 'HASH')) { - $self->{$type} = { }; - } + my $orig = shift; if (@_) { # If the first argument is an explicit undef (remember, we @@ -638,82 +457,210 @@ sub _args { # out the producer_args hash. if (! defined $_[0]) { shift @_; - %{$self->{$type}} = (); + $self->$orig({}); } my $args = isa($_[0], 'HASH') ? shift : { @_ }; - %{$self->{$type}} = (%{$self->{$type}}, %$args); + return $self->$orig({ %{$self->$orig}, %$args }); + } + + return $self->$orig; +} + +# ---------------------------------------------------------------------- +# Does the get/set work for parser and producer. e.g. +# return $self->_tool({ +# name => 'producer', +# path => "SQL::Translator::Producer", +# default_sub => "produce", +# }, @_); +# ---------------------------------------------------------------------- +sub _tool { + my ($self,$args) = (shift, shift); + my $name = $args->{name}; + my $orig = $args->{orig}; + return $self->{$name} unless @_; # get accessor + + my $path = $args->{path}; + my $default_sub = $args->{default_sub}; + my $tool = shift; + + # passed an anonymous subroutine reference + if (isa($tool, 'CODE')) { + $self->$orig($tool); + $self->${\"_set_${name}_type"}("CODE"); + $self->debug("Got $name: code ref\n"); } - $self->{$type}; + # Module name was passed directly + # We try to load the name; if it doesn't load, there's a + # possibility that it has a function name attached to it, + # so we give it a go. + else { + $tool =~ s/-/::/g if $tool !~ /::/; + my ($code,$sub); + ($code,$sub) = _load_sub("$tool\::$default_sub", $path); + unless ($code) { + if ( __PACKAGE__->error =~ m/Can't find module/ ) { + # Mod not found so try sub + ($code,$sub) = _load_sub("$tool", $path) unless $code; + die "Can't load $name subroutine '$tool' : ".__PACKAGE__->error + unless $code; + } + else { + die "Can't load $name '$tool' : ".__PACKAGE__->error; + } + } + + # get code reference and assign + my (undef,$module,undef) = $sub =~ m/((.*)::)?(\w+)$/; + $self->$orig($code); + $self->${\"_set_$name\_type"}($sub eq "CODE" ? "CODE" : $module); + $self->debug("Got $name: $sub\n"); + } + + # At this point, $self->{$name} contains a subroutine + # reference that is ready to run + + # Anything left? If so, it's args + my $meth = "$name\_args"; + $self->$meth(@_) if (@_); + + return $self->{$name}; } # ---------------------------------------------------------------------- # _list($type) # ---------------------------------------------------------------------- sub _list { - my $self = shift; - my $type = shift || return (); + my $self = shift; + my $type = shift || return (); my $uctype = ucfirst lc $type; - my %found; + # + # First find all the directories where SQL::Translator + # parsers or producers (the "type") appear to live. + # load("SQL::Translator::$uctype") or return (); my $path = catfile "SQL", "Translator", $uctype; + my @dirs; for (@INC) { my $dir = catfile $_, $path; $self->debug("_list_${type}s searching $dir\n"); next unless -d $dir; - - my $dh = IO::Dir->new($dir); - for (grep /\.pm$/, $dh->read) { - s/\.pm$//; - $found{ join "::", "SQL::Translator::$uctype", $_ } = 1; - } + push @dirs, $dir; } - return keys %found; + # + # Now use File::File::find to look recursively in those + # directories for all the *.pm files, then present them + # with the slashes turned into dashes. + # + my %found; + find( + sub { + if ( -f && m/\.pm$/ ) { + my $mod = $_; + $mod =~ s/\.pm$//; + my $cur_dir = $File::Find::dir; + my $base_dir = quotemeta catfile 'SQL', 'Translator', $uctype; + + # + # See if the current directory is below the base directory. + # + if ( $cur_dir =~ m/$base_dir(.*)/ ) { + $cur_dir = $1; + $cur_dir =~ s!^/!!; # kill leading slash + $cur_dir =~ s!/!-!g; # turn other slashes into dashes + } + else { + $cur_dir = ''; + } + + $found{ join '-', map { $_ || () } $cur_dir, $mod } = 1; + } + }, + @dirs + ); + + return sort { lc $a cmp lc $b } keys %found; } # ---------------------------------------------------------------------- -# load($module) +# load(MODULE [,PATH[,PATH]...]) # # Loads a Perl module. Short circuits if a module is already loaded. +# +# MODULE - is the name of the module to load. +# +# PATH - optional list of 'package paths' to look for the module in. e.g +# If you called load('Super::Foo' => 'My', 'Other') it will +# try to load the mod Super::Foo then My::Super::Foo then Other::Super::Foo. +# +# Returns package name of the module actually loaded or false and sets error. +# +# Note, you can't load a name from the root namespace (ie one without '::' in +# it), therefore a single word name without a path fails. # ---------------------------------------------------------------------- sub load { - my $module = do { my $m = shift; $m =~ s[::][/]g; "$m.pm" }; - return 1 if $INC{$module}; - - eval { - require $module; - $module->import(@_); - }; + my $name = shift; + my @path; + push @path, "" if $name =~ /::/; # Empty path to check name on its own first + push @path, @_ if @_; + + foreach (@path) { + my $module = $_ ? "$_\::$name" : $name; + my $file = $module; $file =~ s[::][/]g; $file .= ".pm"; + __PACKAGE__->debug("Loading $name as $file\n"); + return $module if $INC{$file}; # Already loaded + + eval { require $file }; + next if $@ =~ /Can't locate $file in \@INC/; + eval { $module->import() } unless $@; + return __PACKAGE__->error("Error loading $name as $module : $@") + if $@ && $@ !~ /"SQL::Translator::Producer" is not exported/; + + return $module; # Module loaded ok + } - return __PACKAGE__->error($@) if ($@); - return 1; + return __PACKAGE__->error("Can't find module $name. Path:".join(",",@path)); } # ---------------------------------------------------------------------- +# Load the sub name given (including package), optionally using a base package +# path. Returns code ref and name of sub loaded, including its package. +# (\&code, $sub) = load_sub( 'MySQL::produce', "SQL::Translator::Producer" ); +# (\&code, $sub) = load_sub( 'MySQL::produce', @path ); +# ---------------------------------------------------------------------- +sub _load_sub { + my ($tool, @path) = @_; + + my (undef,$module,$func_name) = $tool =~ m/((.*)::)?(\w+)$/; + if ( my $module = load($module => @path) ) { + my $sub = "$module\::$func_name"; + return wantarray ? ( \&{ $sub }, $sub ) : \&$sub; + } + return undef; +} + sub format_table_name { return shift->_format_name('_format_table_name', @_); } -# ---------------------------------------------------------------------- sub format_package_name { return shift->_format_name('_format_package_name', @_); } -# ---------------------------------------------------------------------- sub format_fk_name { return shift->_format_name('_format_fk_name', @_); } -# ---------------------------------------------------------------------- sub format_pk_name { return shift->_format_name('_format_pk_name', @_); } # ---------------------------------------------------------------------- -# The other format_*_name methods rely on this one. It optionally +# The other format_*_name methods rely on this one. It optionally # accepts a subroutine ref as the first argument (or uses an identity # sub if one isn't provided or it doesn't already exist), and applies # it to the rest of the arguments (if any). @@ -733,26 +680,19 @@ sub _format_name { return @args ? $self->{$field}->(@args) : $self->{$field}; } -# ---------------------------------------------------------------------- -# isa($ref, $type) -# -# Calls UNIVERSAL::isa($ref, $type). I think UNIVERSAL::isa is ugly, -# but I like function overhead. -# ---------------------------------------------------------------------- sub isa($$) { my ($ref, $type) = @_; return UNIVERSAL::isa($ref, $type); } -# ---------------------------------------------------------------------- -sub validate { - my ( $self, $arg ) = @_; - if ( defined $arg ) { - $self->{'validate'} = $arg ? 1 : 0; - } - return $self->{'validate'} || 0; +sub version { + my $self = shift; + return $VERSION; } +# Must come after all 'has' declarations +around new => \&ex2err; + 1; # ---------------------------------------------------------------------- @@ -776,15 +716,17 @@ SQL::Translator - manipulate structured data definitions (SQL and more) # Print debug info debug => 1, # Print Parse::RecDescent trace - trace => 0, + trace => 0, # Don't include comments in output - no_comments => 0, + no_comments => 0, # Print name mutations, conflicts - show_warnings => 0, + show_warnings => 0, # Add "drop table" statements - add_drop_table => 1, + add_drop_table => 1, + # to quote or not to quote, thats the question + quote_identifiers => 1, # Validate schema object - validate => 1, + validate => 1, # Make all table names CAPS in producers which support this option format_table_name => sub {my $tablename = shift; return uc($tablename)}, # Null-op formatting, only here for documentation's sake @@ -797,13 +739,17 @@ SQL::Translator - manipulate structured data definitions (SQL and more) from => 'MySQL', to => 'Oracle', # Or an arrayref of filenames, i.e. [ $file1, $file2, $file3 ] - filename => $file, + filename => $file, ) or die $translator->error; print $output; =head1 DESCRIPTION +This documentation covers the API for SQL::Translator. For a more general +discussion of how to use the modules and scripts, please see +L. + SQL::Translator is a group of Perl modules that converts vendor-specific SQL table definitions into other formats, such as other vendor-specific SQL, ER diagrams, documentation (POD and HTML), @@ -842,6 +788,10 @@ producer_args =item * +filters + +=item * + filename / file =item * @@ -858,6 +808,18 @@ add_drop_table =item * +quote_identifiers + +=item * + +quote_table_names (DEPRECATED) + +=item * + +quote_field_names (DEPRECATED) + +=item * + no_comments =item * @@ -878,9 +840,23 @@ advantage is gained by passing options to the constructor. =head2 add_drop_table -Toggles whether or not to add "DROP TABLE" statements just before the +Toggles whether or not to add "DROP TABLE" statements just before the create definitions. +=head2 quote_identifiers + +Toggles whether or not to quote identifiers (table, column, constraint, etc.) +with a quoting mechanism suitable for the chosen Producer. The default (true) +is to quote them. + +=head2 quote_table_names + +DEPRECATED - A legacy proxy to L + +=head2 quote_field_names + +DEPRECATED - A legacy proxy to L + =head2 no_comments Toggles whether to print comments in the output. Accepts a true or false @@ -891,10 +867,11 @@ value, returns the current value. The C method is an accessor/mutator, used to retrieve or define what subroutine is called to produce the output. A subroutine defined as a producer will be invoked as a function (I) -and passed 2 parameters: its container C instance and a -data structure. It is expected that the function transform the data -structure to a string. The C instance is provided for -informational purposes; for example, the type of the parser can be +and passed its container C instance, which it should +call the C method on, to get the C +generated by the parser. It is expected that the function transform the +schema structure to a string. The C instance is also useful +for informational purposes; for example, the type of the parser can be retrieved using the C method, and the C and C methods can be called when needed. @@ -978,6 +955,56 @@ entirety of the data to be parsed. There is also C and C, which perform analogously to C and C +=head2 filters + +Set or retreive the filters to run over the schema during the +translation, before the producer creates its output. Filters are sub +routines called, in order, with the schema object to filter as the 1st +arg and a hash of options (passed as a list) for the rest of the args. +They are free to do whatever they want to the schema object, which will be +handed to any following filters, then used by the producer. + +Filters are set as an array, which gives the order they run in. +Like parsers and producers, they can be defined by a module name, a +module name relative to the SQL::Translator::Filter namespace, a module +name and function name together or a reference to an anonymous subroutine. +When using a module name a function called C will be invoked in +that package to do the work. + +To pass args to the filter set it as an array ref with the 1st value giving +the filter (name or sub) and the rest its args. e.g. + + $tr->filters( + sub { + my $schema = shift; + # Do stuff to schema here! + }, + DropFKeys, + [ "Names", table => 'lc' ], + [ "Foo", foo => "bar", hello => "world" ], + [ "Filter5" ], + ); + +Although you normally set them in the constructor, which calls +through to filters. i.e. + + my $translator = SQL::Translator->new( + ... + filters => [ + sub { ... }, + [ "Names", table => 'lc' ], + ], + ... + ); + +See F for more examples. + +Multiple set calls to filters are cumulative with new filters added to +the end of the current list. + +Returns the filters as a list of array refs, the 1st value being a +reference to the filter sub and the rest its args. + =head2 show_warnings Toggles whether to print warnings of name conflicts, identifier @@ -988,11 +1015,12 @@ current value. =head2 translate -The C method calls the subroutines referenced by the -C and C data members (described above). It accepts -as arguments a number of things, in key => value format, including -(potentially) a parser and a producer (they are passed directly to the -C and C methods). +The C method calls the subroutine referenced by the +C data member, then calls any C and finally calls +the C sub routine (these members are described above). +It accepts as arguments a number of things, in key => value format, +including (potentially) a parser and a producer (they are passed +directly to the C and C methods). Here is how the parameter list to C is parsed: @@ -1069,15 +1097,23 @@ Turns on/off the tracing option of Parse::RecDescent. Whether or not to validate the schema object after parsing and before producing. +=head2 version + +Returns the version of the SQL::Translator release. + =head1 AUTHORS -Ken Y. Clark, Ekclark@cpan.orgE, -darren chamberlain Edarren@cpan.orgE, -Chris Mungall Ecjm@fruitfly.orgE, -Allen Day Eallenday@users.sourceforge.netE, -Sam Angiuoli Eangiuoli@users.sourceforge.netE, -Ying Zhang Ezyolive@yahoo.comE, -Mike Mellilo Emmelillo@users.sourceforge.netE. +See the included AUTHORS file: +L + +If you would like to contribute to the project, you can send patches +to the developers mailing list: + + sqlfairy-developers@lists.sourceforge.net + +Or send us a message (with your Sourceforge username) asking to be +added to the project and what you'd like to contribute. + =head1 COPYRIGHT @@ -1097,7 +1133,12 @@ USA =head1 BUGS -Please use http://rt.cpan.org/ for reporting bugs. +Please use L for reporting bugs. + +=head1 PRAISE + +If you find this module useful, please use +L to rate it. =head1 SEE ALSO @@ -1108,5 +1149,5 @@ L, L, L, L, -L +L, L.