lib/SQL/Translator/Parser/DBI/Sybase.pm

   1 package SQL::Translator::Parser::DBI::Sybase;
   2
   3 =head1 NAME
   4
   5 SQL::Translator::Parser::DBI::Sybase - parser for DBD::Sybase
   6
   7 =head1 SYNOPSIS
   8
   9 See SQL::Translator::Parser::DBI.
  10
  11 =head1 DESCRIPTION
  12
  13 Uses DBI Catalog Methods.
  14
  15 =cut
  16
  17 use strict;
  18 use DBI;
  19 use SQL::Translator::Schema;
  20 use Data::Dumper;
  21
  22 use vars qw[ $DEBUG $VERSION @EXPORT_OK ];
  23 $VERSION = '1.59';
  24 $DEBUG   = 0 unless defined $DEBUG;
  25
  26 no strict 'refs';
  27
  28 sub parse {
  29     my ( $tr, $dbh ) = @_;
  30
  31     if ($dbh->{FetchHashKeyName} ne 'NAME_uc') {
  32         warn "setting dbh attribute {FetchHashKeyName} to NAME_uc";
  33         $dbh->{FetchHashKeyName} = 'NAME_uc';
  34     }
  35
  36     if ($dbh->{ChopBlanks} != 1) {
  37         warn "setting dbh attribute {ChopBlanks} to 1";
  38         $dbh->{ChopBlanks} = 1;
  39     }
  40
  41     my $schema = $tr->schema;
  42
  43     my ($sth, @tables, $columns);
  44     my $stuff;
  45
  46     ### Columns
  47
  48     # it is much quicker to slurp back everything all at once rather
  49     # than make repeated calls
  50
  51     $sth = $dbh->column_info(undef, undef, undef, undef);
  52
  53
  54     foreach my $c (@{$sth->fetchall_arrayref({})}) {
  55         $columns
  56             ->{$c->{TABLE_CAT}}
  57                 ->{$c->{TABLE_SCHEM}}
  58                     ->{$c->{TABLE_NAME}}
  59                         ->{columns}
  60                             ->{$c->{COLUMN_NAME}}= $c;
  61     }
  62
  63     ### Tables and views
  64
  65     # Get a list of the tables and views.
  66     $sth = $dbh->table_info();
  67     @tables   = @{$sth->fetchall_arrayref({})};
  68
  69     my $h = $dbh->selectall_arrayref(q{
  70 SELECT o.name, colid,colid2,c.text
  71   FROM syscomments c
  72   JOIN sysobjects o
  73     ON c.id = o.id
  74  WHERE o.type ='V'
  75 ORDER BY o.name,
  76          c.colid,
  77          c.colid2
  78 }
  79 );
  80
  81     # View text
  82     # I had always thought there was something 'hard' about
  83     # reconstructing text from syscomments ..
  84     # this seems to work fine and is certainly not complicated!
  85
  86     foreach (@{$h}) {
  87         $stuff->{view}->{$_->[0]}->{text} .= $_->[3];
  88     }
  89
  90     #### objects with indexes.
  91     map {
  92         $stuff->{indexes}->{$_->[0]}++
  93             if defined;
  94     } @{$dbh->selectall_arrayref("SELECT DISTINCT object_name(id) AS name
  95                                     FROM sysindexes
  96                                    WHERE indid > 0")};
  97
  98     ## slurp objects
  99     map {
 100         $stuff->{$_->[1]}->{$_->[0]} = $_;
 101     } @{$dbh->selectall_arrayref("SELECT name,type, id FROM sysobjects")};
 102
 103
 104     ### Procedures
 105
 106     # This gets legitimate procedures by used the 'supported' API: sp_stored_procedures
 107     map {
 108         my $n = $_->{PROCEDURE_NAME};
 109         $n =~ s/;\d+$//;        # Ignore versions for now
 110         $_->{name} = $n;
 111         $stuff->{procedures}->{$n} = $_;
 112     } values %{$dbh->selectall_hashref("sp_stored_procedures", 'PROCEDURE_NAME')};
 113
 114
 115     # And this blasts in the text of 'legit' stored procedures.  Do
 116     # this rather than calling sp_helptext in a loop.
 117
 118     $h = $dbh->selectall_arrayref(q{
 119 SELECT o.name, colid,colid2,c.text
 120   FROM syscomments c
 121   JOIN sysobjects o
 122     ON c.id = o.id
 123  WHERE o.type ='P'
 124 ORDER BY o.name,
 125          c.colid,
 126          c.colid2
 127 }
 128 );
 129
 130     foreach (@{$h}) {
 131         $stuff->{procedures}->{$_->[0]}->{text} .= $_->[3]
 132             if (defined($stuff->{procedures}->{$_->[0]}));
 133     }
 134
 135     ### Defaults
 136     ### Rules
 137     ### Bind Defaults
 138     ### Bind Rules
 139
 140     ### Triggers
 141     # Since the 'target' of the trigger is defined in the text, we will
 142     # just create them independently for now rather than associating them
 143     # with a table.
 144
 145     $h = $dbh->selectall_arrayref(q{
 146 SELECT o.name, colid,colid2,c.text
 147   FROM syscomments c
 148   JOIN sysobjects o
 149     ON c.id = o.id
 150   JOIN sysobjects o1
 151     ON (o.id = o1.instrig OR o.id = o1.deltrig or o.id = o1.updtrig)
 152  WHERE o.type ='TR'
 153 ORDER BY o.name,
 154          c.colid,
 155          c.colid2
 156 }
 157 );
 158     foreach (@{$h}) {
 159         $stuff->{triggers}->{$_->[0]}->{text} .= $_->[3];
 160     }
 161
 162     ### References
 163     ### Keys
 164
 165     ### Types
 166     # Not sure what to do with these?
 167     $stuff->{type_info_all} = $dbh->type_info_all;
 168
 169     ### Tables
 170     # According to the DBI docs, these can be
 171
 172     # "TABLE"
 173     # "VIEW"
 174     # "SYSTEM TABLE"
 175     # "GLOBAL TEMPORARY",
 176     # "LOCAL TEMPORARY"
 177     # "ALIAS"
 178     # "SYNONYM"
 179
 180     foreach my $table_info (@tables) {
 181         next
 182             unless (defined($table_info->{TABLE_TYPE}));
 183
 184         if ($table_info->{TABLE_TYPE} =~ /TABLE/) {
 185             my $table = $schema->add_table(
 186                                            name =>
 187 $table_info->{TABLE_NAME},
 188                                            type =>
 189 $table_info->{TABLE_TYPE},
 190                                           ) || die $schema->error;
 191
 192             # find the associated columns
 193
 194             my $cols =
 195                 $columns->{$table_info->{TABLE_QUALIFIER}}
 196                     ->{$table_info->{TABLE_OWNER}}
 197                         ->{$table_info->{TABLE_NAME}}
 198                             ->{columns};
 199
 200             foreach my $c (values %{$cols}) {
 201                 my $f = $table->add_field(
 202                                           name        => $c->{COLUMN_NAME},
 203                                           data_type   => $c->{TYPE_NAME},
 204                                           order       => $c->{ORDINAL_POSITION},
 205                                           size        => $c->{COLUMN_SIZE},
 206                                          ) || die $table->error;
 207
 208                 $f->is_nullable(1)
 209                     if ($c->{NULLABLE} == 1);
 210             }
 211
 212             # add in primary key
 213             my $h = $dbh->selectall_hashref("sp_pkeys
 214 $table_info->{TABLE_NAME}", 'COLUMN_NAME');
 215             if (scalar keys %{$h} > 1) {
 216                 my @c = map {
 217                     $_->{COLUMN_NAME}
 218                 } sort {
 219                     $a->{KEY_SEQ} <=> $b->{KEY_SEQ}
 220                 } values %{$h};
 221
 222                 $table->primary_key(@c)
 223                     if (scalar @c);
 224             }
 225
 226             # add in any indexes ... how do we tell if the index has
 227             # already been created as part of a primary key or other
 228             # constraint?
 229
 230             if (defined($stuff->{indexes}->{$table_info->{TABLE_NAME}})){
 231                 my $h = $dbh->selectall_hashref("sp_helpindex
 232 $table_info->{TABLE_NAME}", 'INDEX_NAME');
 233                 foreach (values %{$h}) {
 234                     my $fields = $_->{'INDEX_KEYS'};
 235                     $fields =~ s/\s*//g;
 236                     my $i = $table->add_index(
 237                                               name   =>
 238 $_->{INDEX_NAME},
 239                                               fields => $fields,
 240                                              );
 241                     if ($_->{'INDEX_DESCRIPTION'} =~ /unique/i) {
 242                         $i->type('unique');
 243
 244                         # we could make this a primary key if there
 245                         # isn't already one defined and if there
 246                         # aren't any nullable columns in thisindex.
 247
 248                         if (!defined($table->primary_key())) {
 249                             $table->primary_key($fields)
 250                                 unless grep {
 251                                     $table->get_field($_)->is_nullable()
 252                                 } split(/,\s*/, $fields);
 253                         }
 254                     }
 255                 }
 256             }
 257         } elsif ($table_info->{TABLE_TYPE} eq 'VIEW') {
 258             my $view =  $schema->add_view(
 259                                           name =>
 260 $table_info->{TABLE_NAME},
 261                                           );
 262
 263
 264             my $cols =
 265                 $columns->{$table_info->{TABLE_QUALIFIER}}
 266                     ->{$table_info->{TABLE_OWNER}}
 267                         ->{$table_info->{TABLE_NAME}}
 268                             ->{columns};
 269
 270             $view->fields(map {
 271                 $_->{COLUMN_NAME}
 272             } sort {
 273                 $a->{ORDINAL_POSITION} <=> $b->{ORDINAL_POSITION}
 274                 } values %{$cols}
 275                          );
 276
 277             $view->sql($stuff->{view}->{$table_info->{TABLE_NAME}}->{text})
 278                 if (defined($stuff->{view}->{$table_info->{TABLE_NAME}}->{text}));
 279         }
 280     }
 281
 282     foreach my $p (values %{$stuff->{procedures}}) {
 283         my $proc = $schema->add_procedure(
 284                                name      => $p->{name},
 285                                owner     => $p->{PROCEDURE_OWNER},
 286                                comments  => $p->{REMARKS},
 287                                sql       => $p->{text},
 288                                );
 289
 290     }
 291
 292     ### Permissions
 293     ### Groups
 294     ### Users
 295     ### Aliases
 296     ### Logins
 297     return 1;
 298 }
 299
 300 1;
 301
 302 =pod
 303
 304 =head1 AUTHOR
 305
 306 Paul Harrington E<lt>harringp@deshaw.comE<gt>.
 307
 308 =head1 SEE ALSO
 309
 310 DBI, DBD::Sybase, SQL::Translator::Schema.
 311
 312 =cut