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
add_color => 1,
show_constraints => 1,
show_datatypes => 1,
- show_col_sizes => 1
+ show_sizes => 1
}
) or die SQL::Translator->error;
custom font size for node and edge labels (note that arbitrarily large
sizes may be ignored due to page size or graph size constraints)
-==item * fontname
+=item * fontname
custom font name (or full path to font file) for node, edge, and graph
labels
-==item * nodeattrs
+=item * nodeattrs
reference to a hash of node attribute names and their values; these
may override general fontname or fontsize parameter
-==item * edgeattrs
+=item * edgeattrs
reference to a hash of edge attribute names and their values; these
may override general fontname or fontsize parameter
-==item * graphattrs
+=item * graphattrs
reference to a hash of graph attribute names and their values; these
may override the general fontname parameter
displayed next to each column's name; this option will have no
effect if the value of show_fields is set to false
-=item * show_col_sizes
+=item * show_sizes
if set to a true value, the size (in bytes) of each CHAR and
VARCHAR column will be displayed in parentheses next to the
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_name
+
+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_name 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 vars qw[ $VERSION $DEBUG ];
-$VERSION = sprintf "%d.%02d", q$Revision: 1.14 $ =~ /(\d+)\.(\d+)/;
+$VERSION = sprintf "%d.%02d", q$Revision$ =~ /(\d+)\.(\d+)/;
$DEBUG = 0 unless defined $DEBUG;
use constant VALID_LAYOUT => {
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_name = defined $args->{'show_index_name'} ? $args->{'show_index_name'} : 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 = $args->{'skip_fields'};
- my %skip = map { s/^\s+|\s+$//g; $_, 1 }
+ my $skip_fields = $args->{'skip_fields'} || '';
+ my %skip = map { s/^\s+|\s+$//g; length $_ ? ($_, 1) : () }
split ( /,/, $skip_fields );
$natural_join ||= $join_pk_only;
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 10
+ # 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_name ? $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));
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;
Ken Y. Clark E<lt>kclark@cpan.orgE<gt>
+=head2 CONTRIBUTORS
+
+Jonathan Yu E<lt>frequency@cpan.orgE<gt>
+
=head1 SEE ALSO
SQL::Translator, GraphViz