X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FSQL%2FTranslator%2FProducer%2FGraphViz.pm;h=7c18c2fca1475e2ea6970bdab10b779ce75e6b39;hb=782b5a43519d2713171767f74a544fe9892542ea;hp=8c57208b274aa75557820176c735467fbf01fd60;hpb=9d93edab08af76e2e5e702197ee8fa2c03562444;p=dbsrgits%2FSQL-Translator.git diff --git a/lib/SQL/Translator/Producer/GraphViz.pm b/lib/SQL/Translator/Producer/GraphViz.pm index 8c57208..7c18c2f 100644 --- a/lib/SQL/Translator/Producer/GraphViz.pm +++ b/lib/SQL/Translator/Producer/GraphViz.pm @@ -1,9 +1,9 @@ package SQL::Translator::Producer::GraphViz; # ------------------------------------------------------------------- -# $Id: GraphViz.pm,v 1.14 2007-09-26 13:20:09 schiffbruechige Exp $ +# $Id$ # ------------------------------------------------------------------- -# Copyright (C) 2002-4 SQLFairy Authors +# Copyright (C) 2002-2009 SQLFairy Authors # # This program is free software; you can redistribute it and/or # modify it under the terms of the GNU General Public License as @@ -56,7 +56,9 @@ the GraphViz module). It's nifty--you should try it! =item * out_file -the name of the file where the graphviz graphic is to be written +The name of the file where the resulting GraphViz output will be +written. Alternatively an open filehandle can be supplied. If +undefined (the default) - the result is returned as a string. =item * layout (DEFAULT: 'dot') @@ -171,18 +173,47 @@ like-named argument in the make_natural_join method (see natural_join above) of SQL::Translator::Schema, if either the natural_join or join_pk_only options has a true value +=item * show_indexes + +if set to a true value, each record will also show the indexes +set on each table. it describes the index types along with +which columns are included in the index. this option requires +that show_fields is a true value as well + +=item * show_index_names + +if show_indexes is set to a true value, then the value of this +parameter determines whether or not to print names of indexes. +if show_index_names is false, then a list of indexed columns +will appear below the field list. otherwise, it will be a list +prefixed with the name of each index. it defaults to true. + +=item * friendly_ints + +if set to a true value, each integer type field will be displayed +as a smallint, integer or bigint depending on the field's +associated size parameter. this only applies for the 'integer' +type (and not the lowercase 'int' type, which is assumed to be a +32-bit integer). + +=item * friendly_ints_extended + +if set to a true value, the friendly ints displayed will take into +account the non-standard types, 'tinyint' and 'mediumint' (which, +as far as I am aware, is only implemented in MySQL) + =back =cut use strict; use GraphViz; -use Data::Dumper; use SQL::Translator::Schema::Constants; use SQL::Translator::Utils qw(debug); +use Scalar::Util qw/openhandle/; use vars qw[ $VERSION $DEBUG ]; -$VERSION = sprintf "%d.%02d", q$Revision: 1.14 $ =~ /(\d+)\.(\d+)/; +$VERSION = '1.99'; $DEBUG = 0 unless defined $DEBUG; use constant VALID_LAYOUT => { @@ -207,31 +238,6 @@ use constant VALID_NODE_SHAPE => { octagon => 1, }; -use constant VALID_OUTPUT => { - canon => 1, - text => 1, - ps => 1, - hpgl => 1, - pcl => 1, - mif => 1, - pic => 1, - gd => 1, - gd2 => 1, - gif => 1, - jpeg => 1, - png => 1, - wbmp => 1, - cmap => 1, - ismap => 1, - imap => 1, - vrml => 1, - vtx => 1, - mp => 1, - fig => 1, - svg => 1, - plain => 1, -}; - sub produce { my $t = shift; my $schema = $t->schema; @@ -258,6 +264,10 @@ sub produce { my $show_fk_only = $args->{'show_fk_only'}; my $show_datatypes = $args->{'show_datatypes'}; my $show_sizes = $args->{'show_sizes'}; + my $show_indexes = $args->{'show_indexes'}; + my $show_index_names = defined $args->{'show_index_names'} ? $args->{'show_index_names'} : 1; + my $friendly_ints = $args->{'friendly_ints'}; + my $friendly_ints_ex = $args->{'friendly_ints_extended'}; my $show_constraints = $args->{'show_constraints'}; my $join_pk_only = $args->{'join_pk_only'}; my $skip_fields = $args->{'skip_fields'} || ''; @@ -271,8 +281,6 @@ sub produce { ) if $natural_join; die "Invalid layout '$layout'" unless VALID_LAYOUT->{ $layout }; - die "Invalid output type: '$output_type'" - unless VALID_OUTPUT->{ $output_type }; die "Invalid node shape'$node_shape'" unless VALID_NODE_SHAPE->{ $node_shape }; @@ -281,9 +289,6 @@ sub produce { $_ = 0 if $_ < 0; } - # - # Create GraphViz and see if we can produce the output type. - # my %args = ( directed => $natural_join ? 0 : 1, layout => $layout, @@ -327,41 +332,166 @@ sub produce { $args{'graph'}->{$key} = $val; } - my $gv = GraphViz->new( %args ) or die "Can't create GraphViz object\n"; + # + # Create a blank GraphViz object and see if we can produce the output type. + # + my $gv = GraphViz->new( %args ) or die "Can't create GraphViz object\n"; + my $output_method = "as_$output_type"; + + # the generators are AUTOLOADed so can't use ->can ($output_method) + eval { $gv->$output_method }; + die "Invalid output type: '$output_type'" if $@; + my %nj_registry; # for locations of fields for natural joins my @fk_registry; # for locations of fields for foreign keys for my $table ( $schema->get_tables ) { - my $table_name = $table->name; my @fields = $table->get_fields; if ( $show_fk_only ) { @fields = grep { $_->is_foreign_key } @fields; } - my $field_str = join( - '\l', - map { - '-\ ' - . $_->name - . ( $show_datatypes ? '\ ' . $_->data_type : '') - . ( $show_sizes && ! $show_datatypes ? '\ ' : '') - . ( $show_sizes && $_->data_type =~ /^(VAR)?CHAR2?$/i ? '(' . $_->size . ')' : '') - . ( $show_constraints ? - ( $_->is_primary_key || $_->is_foreign_key || $_->is_unique ? '\ [' : '' ) - . ( $_->is_primary_key ? 'PK' : '' ) - . ( $_->is_primary_key && ($_->is_foreign_key || $_->is_unique) ? ',' : '' ) - . ( $_->is_foreign_key ? 'FK' : '' ) - . ( $_->is_unique && ($_->is_primary_key || $_->is_foreign_key) ? ',' : '' ) - . ( $_->is_unique ? 'U' : '' ) - . ( $_->is_primary_key || $_->is_foreign_key || $_->is_unique ? ']' : '' ) - : '' ) - . '\ ' - } @fields - ) . '\l'; - my $label = $show_fields ? "{$table_name|$field_str}" : $table_name; -# $gv->add_node( $table_name, label => $label ); - $gv->add_node( $table_name, label => $label, ($node_shape eq 'record' ? ( shape => $node_shape ) : ()) ); + my $field_str = ''; + if ($show_fields) { + + my @fmt_fields; + foreach my $field (@fields) { + + my $field_type; + if ($show_datatypes) { + + $field_type = $field->data_type; + + # For the integer type, transform into different types based on + # requested size, if a size is given. + if ($field->size and $friendly_ints and (lc $field_type) eq 'integer') { + # Automatically translate to int2, int4, int8 + # Type (Bits) Max. Signed/Unsigned Length + # tinyint* (8) 128 3 + # 255 3 + # smallint (16) 32767 5 + # 65535 5 + # mediumint* (24) 8388607 7 + # 16777215 8 + # int (32) 2147483647 10 + # 4294967295 11 + # bigint (64) 9223372036854775807 19 + # 18446744073709551615 20 + # + # * tinyint and mediumint are nonstandard extensions which are + # only available under MySQL (to my knowledge) + my $size = $field->size; + if ($size <= 3 and $friendly_ints_ex) { + $field_type = 'tinyint', + } + elsif ($size <= 5) { + $field_type = 'smallint'; + } + elsif ($size <= 8 and $friendly_ints_ex) { + $field_type = 'mediumint'; + } + elsif ($size <= 11) { + $field_type = 'integer'; + } + else { + $field_type = 'bigint'; + } + } + + if ( + $show_sizes + and + $field->size + and + ($field_type =~ /^(var)?char2?$/ or $field_type eq 'numeric' or $field_type eq 'decimal') + ) { + $field_type .= '(' . $field->size . ')'; + } + } + + my $constraints; + if ($show_constraints) { + my @constraints; + push(@constraints, 'PK') if $field->is_primary_key; + push(@constraints, 'FK') if $field->is_foreign_key; + push(@constraints, 'U') if $field->is_unique; + + $constraints = join (',', @constraints); + } + + # construct the field line from all info gathered so far + push @fmt_fields, join (' ', + '-', + $field->name, + $field_type || (), + $constraints ? "[$constraints]" : (), + ); + + } + + # join field lines with graphviz formatting + $field_str = join ('\l', @fmt_fields) . '\l'; + } + + my $index_str = ''; + if ($show_indexes) { + + my @fmt_indexes; + foreach my $index ($table->get_indices) { + next unless $index->is_valid; + + push @fmt_indexes, join (' ', + '*', + $show_index_names ? $index->name . ':' : (), + join (', ', $index->fields), + ($index->type eq 'UNIQUE') ? '[U]' : (), + ); + } + + # join index lines with graphviz formatting (if any indexes at all) + $index_str = join ('\l', @fmt_indexes) . '\l' if @fmt_indexes; + } + + my $table_name = $table->name; + my $name_str = $table_name . '\n'; + + # escape spaces + for ($name_str, $field_str, $index_str) { + $_ =~ s/ /\\ /g; + } + + + # only the 'record' type supports nice formatting + if ($node_shape eq 'record') { + + # the necessity to supply shape => 'record' is a graphviz bug + $gv->add_node( $table_name, + shape => 'record', + label => sprintf ('{%s}', + join ('|', + $name_str, + $field_str || (), + $index_str || (), + ), + ), + ); + } + else { + my $sep = sprintf ('%s\n', + '-' x ( (length $table_name) + 2) + ); + + $gv->add_node( $table_name, + label => join ($sep, + $name_str, + $field_str || (), + $index_str || (), + ), + ); + } + + debug("Processing table '$table_name'"); debug("Fields = ", join(', ', map { $_->name } @fields)); @@ -422,8 +552,8 @@ sub produce { for my $i ( 0 .. $#tables ) { my $table1 = $tables[ $i ]; for my $j ( 0 .. $#tables ) { + next if $i == $j; my $table2 = $tables[ $j ]; - next if $table1 eq $table2; next if $done{ $table1 }{ $table2 }; $gv->add_edge( $table2, $table1 ); $done{ $table1 }{ $table2 } = 1; @@ -435,15 +565,19 @@ sub produce { # # Print the image. # - my $output_method = "as_$output_type"; if ( $out_file ) { + if (openhandle ($out_file)) { + print $out_file $gv->$output_method; + } + else { open my $fh, ">$out_file" or die "Can't write '$out_file': $!\n"; binmode $fh; print $fh $gv->$output_method; close $fh; + } } else { - return $gv->$output_method; + return $gv->$output_method; } } @@ -457,6 +591,10 @@ sub produce { Ken Y. Clark Ekclark@cpan.orgE +=head2 CONTRIBUTORS + +Jonathan Yu Efrequency@cpan.orgE + =head1 SEE ALSO SQL::Translator, GraphViz