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