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SQL::Translator::Producer::GraphViz.3pm

NAME

SQL::Translator::Producer::GraphViz - GraphViz producer for SQL::Translator

SYNOPSIS

   use SQL::Translator;
 
   my $trans = SQL::Translator->new(
       from => 'MySQL',            # or your db of choice
       to   => 'GraphViz',
       producer_args => {
           out_file         => 'schema.png',
           bgcolor          => 'lightgoldenrodyellow',
           show_constraints => 1,
           show_datatypes   => 1,
           show_sizes       => 1
       }
   ) or die SQL::Translator->error;
 
   $trans->translate or die $trans->error;
 
 

DESCRIPTION

Creates a graph of a schema using the amazing graphviz (see http://www.graphviz.org/) application (via the GraphViz module). It's nifty---you should try it!

PRODUCER ARGS

All GraphViz constructor attributes are accepted and passed through to ``new'' in GraphViz. The following defaults are assumed for some attributes:

   layout => 'dot',
   overlap => 'false',
 
   node => {
     shape => 'record',
     style => 'filled',
     fillcolor => 'white',
   },
 
   # in inches
   width => 8.5,
   height => 11,
 
 

See the documentation of ``new'' in GraphViz for more info on these and other attributes.

In addition this producer accepts the following arguments:

•

skip_tables

An arrayref or a comma-separated list of table names that should be skipped. Note that a skipped table node may still appear if another table has foreign key constraints pointing to the skipped table. If this happens no table field/index information will be included.

•

skip_tables_like

An arrayref or a comma-separated list of regular expressions matching table names that should be skipped.

•

cluster

Clustering of tables allows you to group and box tables according to function or domain or whatever criteria you choose. The syntax for clustering tables is:

   cluster => 'cluster1=table1,table2;cluster2=table3,table4'
 
 

Or pass it as an arrayref like so:

   cluster => [ 'cluster1=table1,table2', 'cluster2=table3,table4' ]
 
 

Or like so:

   cluster => [ 
     { name => 'cluster1', tables => [ 'table1', 'table2' ] },
     { name => 'cluster2', tables => [ 'table3', 'table4' ] },
   ]
 
 

•

out_file

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.

•

output_type (DEFAULT: 'png')

This determines which output method will be invoked to generate the graph: "png" translates to "as_png", "ps" to "as_ps" and so on.

•

fontname

This sets the global font name (or full path to font file) for node, edge, and graph labels

•

fontsize

This sets the global font size for node and edge labels (note that arbitrarily large sizes may be ignored due to page size or graph size constraints)

•

show_fields (DEFAULT: true)

If set to a true value, the names of the colums in a table will be displayed in each table's node

•

show_fk_only

If set to a true value, only columns which are foreign keys will be displayed in each table's node

•

show_datatypes

If set to a true value, the datatype of each column will be displayed next to each column's name; this option will have no effect if the value of "show_fields" is set to false

•

friendly_ints

If set to a true value, each integer type field will be displayed as a tinyint, smallint, integer or bigint depending on the field's associated size parameter. This only applies for the "integer" type (and not the "int" type, which is always assumed to be a 32-bit integer); this option will have no effect if the value of "show_fields" is set to false

•

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)

•

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 column's name; this option will have no effect if the value of "show_fields" is set to false

•

show_constraints

If set to a true value, a field's constraints (i.e., its primary-key-ness, its foreign-key-ness and/or its uniqueness) will appear as a comma-separated list in brackets next to the field's name; this option will have no effect if the value of "show_fields" is set to false

•

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.

•

show_index_names (DEFAULT: true)

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.

•

natural_join

If set to a true value, ``make_natural_joins'' in SQL::Translator::Schema will be called before generating the graph.

•

join_pk_only

The value of this option will be passed as the value of the like-named argument to ``make_natural_joins'' in SQL::Translator::Schema; implies "natural_join => 1"

•

skip_fields

The value of this option will be passed as the value of the like-named argument to ``make_natural_joins'' in SQL::Translator::Schema; implies "natural_join => 1"

DEPRECATED ARGS

•

node_shape

Deprecated, use node => { shape => ... } instead

•

add_color

Deprecated, use bgcolor => 'lightgoldenrodyellow' instead

If set to a true value, the graphic will have a background color of 'lightgoldenrodyellow'; otherwise the default white background will be used

•

nodeattrs

Deprecated, use node => { ... } instead

•

edgeattrs

Deprecated, use edge => { ... } instead

•

graphattrs

Deprecated, use graph => { ... } instead

AUTHOR

Ken Youens-Clark <kclark@cpan.org>

Jonathan Yu <frequency@cpan.org>

SEE ALSO

SQL::Translator, GraphViz