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1 | #!/usr/bin/perl |
2 | |
3 | # ------------------------------------------------------------------- |
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4 | # $Id: sqlt-graph,v 1.8 2007-05-07 20:58:56 mwz444 Exp $ |
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5 | # ------------------------------------------------------------------- |
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6 | # Copyright (C) 2002-4 SQLFairy Authors |
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7 | # |
8 | # This program is free software; you can redistribute it and/or |
9 | # modify it under the terms of the GNU General Public License as |
10 | # published by the Free Software Foundation; version 2. |
11 | # |
12 | # This program is distributed in the hope that it will be useful, but |
13 | # WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
15 | # General Public License for more details. |
16 | # |
17 | # You should have received a copy of the GNU General Public License |
18 | # along with this program; if not, write to the Free Software |
19 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
20 | # 02111-1307 USA |
21 | # ------------------------------------------------------------------- |
22 | |
23 | =head1 NAME |
24 | |
25 | sqlt-graph - Automatically create a graph from a database schema |
26 | |
27 | =head1 SYNOPSIS |
28 | |
29 | ./sqlt-graph -d|--db|-f|--from=db_parser [options] schema.sql |
30 | |
31 | Options: |
32 | |
33 | -l|--layout Layout schema for GraphViz |
34 | ("dot," "neato," "twopi"; default "dot") |
35 | -n|--node-shape Shape of the nodes ("record," "plaintext," |
36 | "ellipse," "circle," "egg," "triangle," "box," |
37 | "diamond," "trapezium," "parallelogram," "house," |
38 | "hexagon," "octagon," default "record") |
39 | -o|--output Output file name (default STDOUT) |
40 | -t|--output-type Output file type ("canon", "text," "ps," "hpgl," |
41 | "pcl," "mif," "pic," "gd," "gd2," "gif," "jpeg," |
42 | "png," "wbmp," "cmap," "ismap," "imap," "vrml," |
43 | "vtx," "mp," "fig," "svg," "plain," default "png") |
44 | -c|--color Add colors |
45 | --no-fields Don't show field names |
46 | --height Image height (in inches, default "11", |
47 | set to "0" to undefine) |
48 | --width Image width (in inches, default "8.5", |
49 | set to "0" to undefine) |
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50 | --fontsize custom font size for node and edge labels |
51 | --fontname name of custom font (or full path to font file) for |
52 | node, edge, and graph labels |
53 | --nodeattr attribute name and value (in key=val syntax) for |
54 | nodes; this option may be repeated to specify |
55 | multiple node attributes |
56 | --edgeattr same as --nodeattr, but for edge attributes |
57 | --graphattr same as --nodeattr, but for graph attributes |
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58 | --natural-join Perform natural joins |
59 | --natural-join-pk Perform natural joins from primary keys only |
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60 | --show-datatypes Show datatype of each field |
61 | --show-sizes Show column sizes for VARCHAR and CHAR fields |
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62 | --show-constraints Show list of constraints for each field |
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63 | -s|--skip Fields to skip in natural joins |
64 | --debug Print debugging information |
65 | |
66 | =head1 DESCRIPTION |
67 | |
68 | This script will create a graph of your schema. Only the database |
69 | driver argument (for SQL::Translator) is required. If no output file |
70 | name is given, then image will be printed to STDOUT, so you should |
71 | redirect the output into a file. |
72 | |
73 | The default action is to assume the presence of foreign key |
74 | relationships defined via "REFERNCES" or "FOREIGN KEY" constraints on |
75 | the tables. If you are parsing the schema of a file that does not |
76 | have these, you will find the natural join options helpful. With |
77 | natural joins, like-named fields will be considered foreign keys. |
78 | This can prove too permissive, however, as you probably don't want a |
79 | field called "name" to be considered a foreign key, so you could |
80 | include it in the "skip" option, and all fields called "name" will be |
81 | excluded from natural joins. A more efficient method, however, might |
82 | be to simply deduce the foriegn keys from primary keys to other fields |
83 | named the same in other tables. Use the "natural-join-pk" option |
84 | to acheive this. |
85 | |
86 | If the schema defines foreign keys, then the graph produced will be |
87 | directed showing the direction of the relationship. If the foreign |
88 | keys are intuited via natural joins, the graph will be undirected. |
89 | |
90 | =cut |
91 | |
92 | # ------------------------------------------------------------------- |
93 | |
94 | use strict; |
95 | use Data::Dumper; |
96 | use Getopt::Long; |
97 | use GraphViz; |
98 | use Pod::Usage; |
99 | use SQL::Translator; |
100 | |
101 | use vars '$VERSION'; |
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102 | $VERSION = sprintf "%d.%02d", q$Revision: 1.8 $ =~ /(\d+)\.(\d+)/; |
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103 | |
104 | # |
105 | # Get arguments. |
106 | # |
107 | my ( |
108 | $layout, $node_shape, $out_file, $output_type, $db_driver, $add_color, |
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109 | $natural_join, $join_pk_only, $skip_fields, $show_datatypes, |
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110 | $show_sizes, $show_constraints, $debug, $help, $height, $width, |
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111 | $no_fields, $fontsize, $fontname |
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112 | ); |
113 | |
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114 | # multi-valued options: |
115 | my %edgeattrs = (); |
116 | my %nodeattrs = (); |
117 | my %graphattrs = (); |
118 | |
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119 | GetOptions( |
120 | 'd|db|f|from=s' => \$db_driver, |
121 | 'o|output:s' => \$out_file, |
122 | 'l|layout:s' => \$layout, |
123 | 'n|node-shape:s' => \$node_shape, |
124 | 't|output-type:s' => \$output_type, |
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125 | 'height:f' => \$height, |
126 | 'width:f' => \$width, |
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127 | 'fontsize=i' => \$fontsize, |
128 | 'fontname=s' => \$fontname, |
129 | 'nodeattr=s' => \%nodeattrs, |
130 | 'edgeattr=s' => \%edgeattrs, |
131 | 'graphattr=s' => \%graphattrs, |
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132 | 'c|color' => \$add_color, |
133 | 'no-fields' => \$no_fields, |
134 | 'natural-join' => \$natural_join, |
135 | 'natural-join-pk' => \$join_pk_only, |
136 | 's|skip:s' => \$skip_fields, |
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137 | 'show-datatypes' => \$show_datatypes, |
138 | 'show-sizes' => \$show_sizes, |
139 | 'show-constraints' => \$show_constraints, |
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140 | 'debug' => \$debug, |
141 | 'h|help' => \$help, |
142 | ) or die pod2usage; |
143 | my @files = @ARGV; # the create script(s) for the original db |
144 | |
145 | pod2usage(1) if $help; |
146 | pod2usage( -message => "No db driver specified" ) unless $db_driver; |
147 | pod2usage( -message => 'No input file' ) unless @files; |
148 | |
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149 | my $translator = SQL::Translator->new( |
150 | from => $db_driver, |
151 | to => 'GraphViz', |
152 | debug => $debug || 0, |
153 | producer_args => { |
154 | out_file => $out_file, |
155 | layout => $layout, |
156 | node_shape => $node_shape, |
157 | output_type => $output_type, |
158 | add_color => $add_color, |
159 | natural_join => $natural_join, |
160 | natural_join_pk => $join_pk_only, |
161 | skip_fields => $skip_fields, |
162 | show_datatypes => $show_datatypes, |
163 | show_sizes => $show_sizes, |
164 | show_constraints => $show_constraints, |
165 | height => $height || 0, |
166 | width => $width || 0, |
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167 | fontsize => $fontsize, |
168 | fontname => $fontname, |
169 | nodeattrs => \%nodeattrs, |
170 | edgeattrs => \%edgeattrs, |
171 | graphattrs => \%graphattrs, |
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172 | show_fields => $no_fields ? 0 : 1, |
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173 | }, |
174 | ) or die SQL::Translator->error; |
175 | |
176 | for my $file (@files) { |
177 | my $output = $translator->translate( $file ) or die |
178 | "Error: " . $translator->error; |
179 | if ( $out_file ) { |
180 | print "Image written to '$out_file'. Done.\n"; |
181 | } |
182 | else { |
183 | print $output; |
184 | } |
185 | } |
186 | |
187 | # ------------------------------------------------------------------- |
188 | |
189 | =pod |
190 | |
191 | =head1 AUTHOR |
192 | |
193 | Ken Y. Clark E<lt>kclark@cpan.orgE<gt>. |
194 | |
195 | =head1 SEE ALSO |
196 | |
197 | perl, SQL::Translator. |
198 | |
199 | =cut |