--- /dev/null
+use MooseX::Declare;
+role SQL::Translator::Producer::SQL::MySQL {
+ use SQL::Translator::Constants qw(:sqlt_types :sqlt_constants);
+ use SQL::Translator::Types qw(Column Constraint Index Table View);
+ my $DEFAULT_MAX_ID_LENGTH = 64;
+ my %used_names;
+
+ #
+ # Use only lowercase for the keys (e.g. "long" and not "LONG")
+ #
+ my %translate = (
+ #
+ # Oracle types
+ #
+ varchar2 => 'varchar',
+ long => 'text',
+ clob => 'longtext',
+
+ #
+ # Sybase types
+ #
+ int => 'integer',
+ money => 'float',
+ real => 'double',
+ comment => 'text',
+ bit => 'tinyint',
+
+ #
+ # Access types
+ #
+ 'long integer' => 'integer',
+ 'text' => 'text',
+ 'datetime' => 'datetime',
+
+ #
+ # PostgreSQL types
+ #
+ bytea => 'BLOB',
+ );
+
+ #
+ # Column types that do not support lenth attribute
+ #
+ my @no_length_attr = qw/ date time timestamp datetime year /;
+
+ method preprocess_schema($schema) {
+# my ($schema) = @_;
+
+ # extra->{mysql_table_type} used to be the type. It belongs in options, so
+ # move it if we find it. Return Engine type if found in extra or options
+ # Similarly for mysql_charset and mysql_collate
+ my $extra_to_options = sub {
+ my ($table, $extra_name, $opt_name) = @_;
+
+ my $extra = $table->extra;
+
+ my $extra_type = delete $extra->{$extra_name};
+
+ # Now just to find if there is already an Engine or Type option...
+ # and lets normalize it to ENGINE since:
+ #
+ # The ENGINE table option specifies the storage engine for the table.
+ # TYPE is a synonym, but ENGINE is the preferred option name.
+ #
+
+ # We have to use the hash directly here since otherwise there is no way
+ # to remove options.
+ my $options = ( $table->{options} ||= []);
+
+ # If multiple option names, normalize to the first one
+ if (ref $opt_name) {
+ OPT_NAME: for ( @$opt_name[1..$#$opt_name] ) {
+ for my $idx ( 0..$#{$options} ) {
+ my ($key, $value) = %{ $options->[$idx] };
+
+ if (uc $key eq $_) {
+ $options->[$idx] = { $opt_name->[0] => $value };
+ last OPT_NAME;
+ }
+ }
+ }
+ $opt_name = $opt_name->[0];
+
+ }
+
+
+ # This assumes that there isn't both a Type and an Engine option.
+ OPTION:
+ for my $idx ( 0..$#{$options} ) {
+ my ($key, $value) = %{ $options->[$idx] };
+
+ next unless uc $key eq $opt_name;
+
+ # make sure case is right on option name
+ delete $options->[$idx]{$key};
+ return $options->[$idx]{$opt_name} = $value || $extra_type;
+
+ }
+
+ if ($extra_type) {
+ push @$options, { $opt_name => $extra_type };
+ return $extra_type;
+ }
+
+ };
+
+ # Names are only specific to a given schema
+ my %used_names = ();
+
+ #
+ # Work out which tables need to be InnoDB to support foreign key
+ # constraints. We do this first as we need InnoDB at both ends.
+ #
+ foreach my $table ( $schema->get_tables ) {
+
+ $extra_to_options->($table, 'mysql_table_type', ['ENGINE', 'TYPE'] );
+ $extra_to_options->($table, 'mysql_charset', 'CHARACTER SET' );
+ $extra_to_options->($table, 'mysql_collate', 'COLLATE' );
+
+ foreach my $c ( $table->get_constraints ) {
+ next unless $c->type eq FOREIGN_KEY;
+
+ # Normalize constraint names here.
+ my $c_name = $c->name;
+ # Give the constraint a name if it doesn't have one, so it doens't feel
+ # left out
+ $c_name = $table->name . '_fk' unless length $c_name;
+
+ $c->name( $self->next_unused_name($c_name) );
+
+ for my $meth (qw/table reference_table/) {
+ my $table = $schema->get_table($c->$meth) || next;
+ # This normalizes the types to ENGINE and returns the value if its there
+ next if $extra_to_options->($table, 'mysql_table_type', ['ENGINE', 'TYPE']);
+ $table->options( { 'ENGINE' => 'InnoDB' } );
+ }
+ } # foreach constraints
+
+ my %map = ( mysql_collate => 'collate', mysql_charset => 'character set');
+ foreach my $f ( $table->get_fields ) {
+ my $extra = $f->extra;
+ for (keys %map) {
+ $extra->{$map{$_}} = delete $extra->{$_} if exists $extra->{$_};
+ }
+
+ my @size = $f->size;
+ if ( !$size[0] && $f->data_type =~ /char$/ ) {
+ $f->size( (255) );
+ }
+ }
+
+ }
+ }
+
+ method produce {
+ my $translator = $self->translator;
+ my $DEBUG = 0;# = $translator->debug;
+ #local %used_names;
+ my $no_comments = $translator->no_comments;
+ my $add_drop_table = $translator->add_drop_table;
+ my $schema = $translator->schema;
+ my $show_warnings = $translator->show_warnings || 0;
+ my $producer_args = $translator->producer_args;
+ my $mysql_version = $self->parse_mysql_version ($producer_args->{mysql_version}, 'perl') || 0;
+ my $max_id_length = $producer_args->{mysql_max_id_length} || $DEFAULT_MAX_ID_LENGTH;
+
+ my ($qt, $qf, $qc) = ('','', '');
+ $qt = '`' if $translator->quote_table_names;
+ $qf = '`' if $translator->quote_field_names;
+
+ #debug("PKG: Beginning production\n");
+ %used_names = ();
+ my $create = '';
+ $create .= $self->header_comment unless ($no_comments);
+ # \todo Don't set if MySQL 3.x is set on command line
+ my @create = "SET foreign_key_checks=0";
+
+ $self->preprocess_schema($schema);
+
+ #
+ # Generate sql
+ #
+ my @table_defs =();
+
+ for my $table ( $schema->get_tables ) {
+ # print $table->name, "\n";
+ push @table_defs, $self->create_table($table,
+ { add_drop_table => $add_drop_table,
+ show_warnings => $show_warnings,
+ no_comments => $no_comments,
+ quote_table_names => $qt,
+ quote_field_names => $qf,
+ max_id_length => $max_id_length,
+ mysql_version => $mysql_version
+ });
+ }
+
+ if ($mysql_version >= 5.000001) {
+ for my $view ( $schema->get_views ) {
+ push @table_defs, $self->create_view($view,
+ { add_replace_view => $add_drop_table,
+ show_warnings => $show_warnings,
+ no_comments => $no_comments,
+ quote_table_names => $qt,
+ quote_field_names => $qf,
+ max_id_length => $max_id_length,
+ mysql_version => $mysql_version
+ });
+ }
+ }
+
+
+ # print "@table_defs\n";
+ push @table_defs, "SET foreign_key_checks=1";
+
+ return wantarray ? ($create ? $create : (), @create, @table_defs) : ($create . join('', map { $_ ? "$_;\n\n" : () } (@create, @table_defs)));
+ }
+
+ method create_view($view, $options) {
+# my ($view, $options) = @_;
+ my $qt = $options->{quote_table_names} || '';
+ my $qf = $options->{quote_field_names} || '';
+
+ my $view_name = $view->name;
+ #debug("PKG: Looking at view '${view_name}'\n");
+
+ # Header. Should this look like what mysqldump produces?
+ my $create = '';
+ $create .= "--\n-- View: ${qt}${view_name}${qt}\n--\n" unless $options->{no_comments};
+ $create .= 'CREATE';
+ $create .= ' OR REPLACE' if $options->{add_replace_view};
+ $create .= "\n";
+
+ my $extra = $view->extra;
+ # ALGORITHM
+ if( exists($extra->{mysql_algorithm}) && defined(my $algorithm = $extra->{mysql_algorithm}) ){
+ $create .= " ALGORITHM = ${algorithm}\n" if $algorithm =~ /(?:UNDEFINED|MERGE|TEMPTABLE)/i;
+ }
+ # DEFINER
+ if( exists($extra->{mysql_definer}) && defined(my $user = $extra->{mysql_definer}) ){
+ $create .= " DEFINER = ${user}\n";
+ }
+ # SECURITY
+ if( exists($extra->{mysql_security}) && defined(my $security = $extra->{mysql_security}) ){
+ $create .= " SQL SECURITY ${security}\n" if $security =~ /(?:DEFINER|INVOKER)/i;
+ }
+
+ #Header, cont.
+ $create .= " VIEW ${qt}${view_name}${qt}";
+
+ if( my @fields = $view->fields ){
+ my $list = join ', ', map { "${qf}${_}${qf}"} @fields;
+ $create .= " ( ${list} )";
+ }
+ if( my $sql = $view->sql ){
+ $create .= " AS (\n ${sql}\n )";
+ }
+ # $create .= "";
+ return $create;
+ }
+
+ method create_table($table, $options) {
+# my ($table, $options) = @_;
+
+ my $qt = $options->{quote_table_names} || '';
+ my $qf = $options->{quote_field_names} || '';
+
+ my $table_name = $self->quote_table_name($table->name, $qt);
+ #debug("PKG: Looking at table '$table_name'\n");
+
+ #
+ # Header. Should this look like what mysqldump produces?
+ #
+ my $create = '';
+ my $drop;
+ $create .= "--\n-- Table: $table_name\n--\n" unless $options->{no_comments};
+ $drop = qq[DROP TABLE IF EXISTS $table_name] if $options->{add_drop_table};
+ $create .= "CREATE TABLE $table_name (\n";
+
+ #
+ # Fields
+ #
+ my @field_defs;
+ for my $field ( $table->get_fields ) {
+ push @field_defs, $self->create_field($field, $options);
+ }
+
+ #
+ # Indices
+ #
+ my @index_defs;
+ my %indexed_fields;
+ for my $index ( $table->get_indices ) {
+ push @index_defs, $self->create_index($index, $options);
+ $indexed_fields{ $_ } = 1 for $index->fields;
+ }
+
+ #
+ # Constraints -- need to handle more than just FK. -ky
+ #
+ my @constraint_defs;
+ my @constraints = $table->get_constraints;
+ for my $c ( @constraints ) {
+ my $constr = $self->create_constraint($c, $options);
+ push @constraint_defs, $constr if($constr);
+ next unless $c->fields;
+ unless ( $indexed_fields{ ($c->fields())[0] } || $c->type ne FOREIGN_KEY ) {
+ push @index_defs, "INDEX ($qf" . ($c->fields())[0] . "$qf)";
+ $indexed_fields{ ($c->fields())[0] } = 1;
+ }
+ }
+
+ $create .= join(",\n", map { " $_" }
+ @field_defs, @index_defs, @constraint_defs
+ );
+
+ #
+ # Footer
+ #
+ $create .= "\n)";
+ $create .= $self->generate_table_options($table, $options) || '';
+ # $create .= ";\n\n";
+
+ return $drop ? ($drop,$create) : $create;
+ }
+
+ method quote_table_name(Str $table_name, Str $qt) {
+ $table_name =~ s/\./$qt.$qt/g;
+
+ return "$qt$table_name$qt";
+ }
+
+ method generate_table_options(Table $table, $options?) {
+ my $create;
+
+ my $table_type_defined = 0;
+ my $qf = $options->{quote_field_names} ||= '';
+ my $charset = $table->extra->{'mysql_charset'};
+ my $collate = $table->extra->{'mysql_collate'};
+ my $union = undef;
+ for my $t1_option_ref ( $table->options ) {
+ my($key, $value) = %{$t1_option_ref};
+ $table_type_defined = 1
+ if uc $key eq 'ENGINE' or uc $key eq 'TYPE';
+ if (uc $key eq 'CHARACTER SET') {
+ $charset = $value;
+ next;
+ } elsif (uc $key eq 'COLLATE') {
+ $collate = $value;
+ next;
+ } elsif (uc $key eq 'UNION') {
+ $union = "($qf". join("$qf, $qf", @$value) ."$qf)";
+ next;
+ }
+ $create .= " $key=$value";
+ }
+
+ my $mysql_table_type = $table->extra->{'mysql_table_type'};
+ $create .= " ENGINE=$mysql_table_type"
+ if $mysql_table_type && !$table_type_defined;
+ my $comments = $table->comments;
+
+ $create .= " DEFAULT CHARACTER SET $charset" if $charset;
+ $create .= " COLLATE $collate" if $collate;
+ $create .= " UNION=$union" if $union;
+ $create .= qq[ comment='$comments'] if $comments;
+ return $create;
+ }
+
+ method create_field($field, $options?) {
+ my $qf = $options->{quote_field_names} ||= '';
+
+ my $field_name = $field->name;
+ #debug("PKG: Looking at field '$field_name'\n");
+ my $field_def = "$qf$field_name$qf";
+
+ # data type and size
+ my $data_type = $field->data_type;
+ my @size = $field->size;
+ my %extra = $field->extra;
+ my $list = $extra{'list'} || [];
+ # \todo deal with embedded quotes
+ my $commalist = join( ', ', map { qq['$_'] } @$list );
+ my $charset = $extra{'mysql_charset'};
+ my $collate = $extra{'mysql_collate'};
+
+ my $mysql_version = $options->{mysql_version} || 0;
+ #
+ # Oracle "number" type -- figure best MySQL type
+ #
+ if ( lc $data_type eq 'number' ) {
+ # not an integer
+ if ( scalar @size > 1 ) {
+ $data_type = 'double';
+ }
+ elsif ( $size[0] && $size[0] >= 12 ) {
+ $data_type = 'bigint';
+ }
+ elsif ( $size[0] && $size[0] <= 1 ) {
+ $data_type = 'tinyint';
+ }
+ else {
+ $data_type = 'int';
+ }
+ }
+ #
+ # Convert a large Oracle varchar to "text"
+ # (not necessary as of 5.0.3 http://dev.mysql.com/doc/refman/5.0/en/char.html)
+ #
+ elsif ( $data_type =~ /char/i && $size[0] > 255 ) {
+ unless ($size[0] <= 65535 && $mysql_version >= 5.000003 ) {
+ $data_type = 'text';
+ @size = ();
+ }
+ }
+ elsif ( $data_type =~ /boolean/i ) {
+ if ($mysql_version >= 4) {
+ $data_type = 'boolean';
+ } else {
+ $data_type = 'enum';
+ $commalist = "'0','1'";
+ }
+ }
+# elsif ( exists $translate{ lc $data_type } ) {
+# $data_type = $translate{ lc $data_type };
+# }
+
+ @size = () if $data_type =~ /(text|blob)/i;
+
+ if ( $data_type =~ /(double|float)/ && scalar @size == 1 ) {
+ push @size, '0';
+ }
+
+ $field_def .= " $data_type";
+
+ if ( lc($data_type) eq 'enum' || lc($data_type) eq 'set') {
+ $field_def .= '(' . $commalist . ')';
+ }
+ elsif (
+ defined $size[0] && $size[0] > 0
+ &&
+ ! grep lc($data_type) eq $_, @no_length_attr
+ ) {
+ $field_def .= '(' . join( ', ', @size ) . ')';
+ }
+
+ # char sets
+ $field_def .= " CHARACTER SET $charset" if $charset;
+ $field_def .= " COLLATE $collate" if $collate;
+
+ # MySQL qualifiers
+ for my $qual ( qw[ binary unsigned zerofill ] ) {
+ my $val = $extra{ $qual } || $extra{ uc $qual } or next;
+ $field_def .= " $qual";
+ }
+ for my $qual ( 'character set', 'collate', 'on update' ) {
+ my $val = $extra{ $qual } || $extra{ uc $qual } or next;
+ $field_def .= " $qual $val";
+ }
+
+ # Null?
+ $field_def .= ' NOT NULL' unless $field->is_nullable;
+
+ # Default? XXX Need better quoting!
+ my $default = $field->default_value;
+=cut
+ if ( defined $default ) {
+ SQL::Translator::Producer->_apply_default_value(
+ \$field_def,
+ $default,
+ [
+ 'NULL' => \'NULL',
+ ],
+ );
+ }
+=cut
+
+ if ( my $comments = $field->comments ) {
+ $field_def .= qq[ comment '$comments'];
+ }
+
+ # auto_increment?
+ $field_def .= " auto_increment" if $field->is_auto_increment;
+
+ return $field_def;
+ }
+
+ method alter_create_index(Index $index, $options?) {
+ my $qt = $options->{quote_table_names} || '';
+ my $qf = $options->{quote_field_names} || '';
+
+ return join( ' ',
+ 'ALTER TABLE',
+ $qt.$index->table->name.$qt,
+ 'ADD',
+ create_index(@_)
+ );
+ }
+
+ method create_index($index, $options?) {
+# my ( $index, $options ) = @_;
+
+ my $qf = $options->{quote_field_names} || '';
+
+ return join(
+ ' ',
+ map { $_ || () }
+ lc $index->type eq 'normal' ? 'INDEX' : $index->type . ' INDEX',
+ $index->name
+ ? (
+ $self->truncate_id_uniquely(
+ $index->name,
+ $options->{max_id_length} || $DEFAULT_MAX_ID_LENGTH
+ )
+ )
+ : '',
+ '(' . $qf . join( "$qf, $qf", $index->fields ) . $qf . ')'
+ );
+ }
+
+ method alter_drop_index(Index $index, $options?) {
+ my $qt = $options->{quote_table_names} || '';
+ my $qf = $options->{quote_field_names} || '';
+
+ return join( ' ',
+ 'ALTER TABLE',
+ $qt.$index->table->name.$qt,
+ 'DROP',
+ 'INDEX',
+ $index->name || $index->fields
+ );
+
+ }
+
+ method alter_drop_constraint(Constraint $c, $options?) {
+ my $qt = $options->{quote_table_names} || '';
+ my $qc = $options->{quote_field_names} || '';
+
+ my $out = sprintf('ALTER TABLE %s DROP %s %s',
+ $qt . $c->table->name . $qt,
+ $c->type eq FOREIGN_KEY ? $c->type : "INDEX",
+ $qc . $c->name . $qc );
+
+ return $out;
+ }
+
+ method alter_create_constraint($index, $options?) {
+ my $qt = $options->{quote_table_names} || '';
+ return join( ' ',
+ 'ALTER TABLE',
+ $qt.$index->table->name.$qt,
+ 'ADD',
+ $self->create_constraint(@_) );
+ }
+
+ method create_constraint(Constraint $c, $options?) {
+ my $qf = $options->{quote_field_names} || '';
+ my $qt = $options->{quote_table_names} || '';
+ my $leave_name = $options->{leave_name} || undef;
+
+ my @fields = $c->fields or return;
+
+ if ( $c->type eq PRIMARY_KEY ) {
+ return 'PRIMARY KEY (' . $qf . join("$qf, $qf", @fields). $qf . ')';
+ }
+ elsif ( $c->type eq UNIQUE ) {
+ return
+ 'UNIQUE '.
+ (defined $c->name ? $qf.$self->truncate_id_uniquely( $c->name, $options->{max_id_length} || $DEFAULT_MAX_ID_LENGTH ).$qf.' ' : '').
+ '(' . $qf . join("$qf, $qf", @fields). $qf . ')';
+ }
+ elsif ( $c->type eq FOREIGN_KEY ) {
+ #
+ # Make sure FK field is indexed or MySQL complains.
+ #
+
+ my $table = $c->table;
+ my $c_name = $self->truncate_id_uniquely( $c->name, $options->{max_id_length} || $DEFAULT_MAX_ID_LENGTH );
+
+ my $def = join(' ',
+ map { $_ || () }
+ 'CONSTRAINT',
+ $qf . $c_name . $qf,
+ 'FOREIGN KEY'
+ );
+
+
+ $def .= ' ('.$qf . join( "$qf, $qf", @fields ) . $qf . ')';
+
+ $def .= ' REFERENCES ' . $qt . $c->reference_table . $qt;
+
+ my @rfields = map { $_ || () } $c->reference_fields;
+ unless ( @rfields ) {
+ my $rtable_name = $c->reference_table;
+ if ( my $ref_table = $table->schema->get_table( $rtable_name ) ) {
+ push @rfields, $ref_table->primary_key;
+ }
+ else {
+ warn "Can't find reference table '$rtable_name' " .
+ "in schema\n" if $options->{show_warnings};
+ }
+ }
+
+ if ( @rfields ) {
+ $def .= ' (' . $qf . join( "$qf, $qf", @rfields ) . $qf . ')';
+ }
+ else {
+ warn "FK constraint on " . $table->name . '.' .
+ join('', @fields) . " has no reference fields\n"
+ if $options->{show_warnings};
+ }
+
+ if ( $c->match_type ) {
+ $def .= ' MATCH ' .
+ ( $c->match_type =~ /full/i ) ? 'FULL' : 'PARTIAL';
+ }
+
+ if ( $c->on_delete ) {
+ $def .= ' ON DELETE '.join( ' ', $c->on_delete );
+ }
+
+ if ( $c->on_update ) {
+ $def .= ' ON UPDATE '.join( ' ', $c->on_update );
+ }
+ return $def;
+ }
+
+ return undef;
+ }
+
+ method alter_table(Str $to_table, $options?) {
+ my $qt = $options->{quote_table_names} || '';
+
+ my $table_options = $self->generate_table_options($to_table, $options) || '';
+ my $out = sprintf('ALTER TABLE %s%s',
+ $qt . $to_table->name . $qt,
+ $table_options);
+
+ return $out;
+ }
+
+ method rename_field(@args) { alter_field(@args) }
+ method alter_field(Str $from_field, Str $to_field, $options?) {
+ my $qf = $options->{quote_field_names} || '';
+ my $qt = $options->{quote_table_names} || '';
+
+ my $out = sprintf('ALTER TABLE %s CHANGE COLUMN %s %s',
+ $qt . $to_field->table->name . $qt,
+ $qf . $from_field->name . $qf,
+ $self->create_field($to_field, $options));
+
+ return $out;
+ }
+
+ method add_field(Str $new_field, $options?) {
+ my $qt = $options->{quote_table_names} || '';
+
+ my $out = sprintf('ALTER TABLE %s ADD COLUMN %s',
+ $qt . $new_field->table->name . $qt,
+ create_field($new_field, $options));
+
+ return $out;
+
+ }
+
+ method drop_field(Str $old_field, $options?) {
+ my $qf = $options->{quote_field_names} || '';
+ my $qt = $options->{quote_table_names} || '';
+
+ my $out = sprintf('ALTER TABLE %s DROP COLUMN %s',
+ $qt . $old_field->table->name . $qt,
+ $qf . $old_field->name . $qf);
+
+ return $out;
+
+ }
+
+ method batch_alter_table($table, $diff_hash, $options?) {
+ # InnoDB has an issue with dropping and re-adding a FK constraint under the
+ # name in a single alter statment, see: http://bugs.mysql.com/bug.php?id=13741
+ #
+ # We have to work round this.
+
+ my %fks_to_alter;
+ my %fks_to_drop = map {
+ $_->type eq FOREIGN_KEY
+ ? ( $_->name => $_ )
+ : ( )
+ } @{$diff_hash->{alter_drop_constraint} };
+
+ my %fks_to_create = map {
+ if ( $_->type eq FOREIGN_KEY) {
+ $fks_to_alter{$_->name} = $fks_to_drop{$_->name} if $fks_to_drop{$_->name};
+ ( $_->name => $_ );
+ } else { ( ) }
+ } @{$diff_hash->{alter_create_constraint} };
+
+ my @drop_stmt;
+ if (scalar keys %fks_to_alter) {
+ $diff_hash->{alter_drop_constraint} = [
+ grep { !$fks_to_alter{$_->name} } @{ $diff_hash->{alter_drop_constraint} }
+ ];
+
+ @drop_stmt = batch_alter_table($table, { alter_drop_constraint => [ values %fks_to_alter ] }, $options);
+
+ }
+
+ my @stmts = map {
+ if (@{ $diff_hash->{$_} || [] }) {
+ my $meth = __PACKAGE__->can($_) or die __PACKAGE__ . " cant $_";
+ map { $meth->( (ref $_ eq 'ARRAY' ? @$_ : $_), $options ) } @{ $diff_hash->{$_} }
+ } else { () }
+ } qw/rename_table
+ alter_drop_constraint
+ alter_drop_index
+ drop_field
+ add_field
+ alter_field
+ rename_field
+ alter_create_index
+ alter_create_constraint
+ alter_table/;
+
+ # rename_table makes things a bit more complex
+ my $renamed_from = "";
+ $renamed_from = $diff_hash->{rename_table}[0][0]->name
+ if $diff_hash->{rename_table} && @{$diff_hash->{rename_table}};
+
+ return unless @stmts;
+ # Just zero or one stmts. return now
+ return (@drop_stmt,@stmts) unless @stmts > 1;
+
+ # Now strip off the 'ALTER TABLE xyz' of all but the first one
+
+ my $qt = $options->{quote_table_names} || '';
+ my $table_name = $qt . $table->name . $qt;
+
+
+ my $re = $renamed_from
+ ? qr/^ALTER TABLE (?:\Q$table_name\E|\Q$qt$renamed_from$qt\E) /
+ : qr/^ALTER TABLE \Q$table_name\E /;
+
+ my $first = shift @stmts;
+ my ($alter_table) = $first =~ /($re)/;
+
+ my $padd = " " x length($alter_table);
+
+ return @drop_stmt, join( ",\n", $first, map { s/$re//; $padd . $_ } @stmts);
+
+ }
+
+ method drop_table(Str $table, $options?) {
+ my $qt = $options->{quote_table_names} || '';
+
+ # Drop (foreign key) constraints so table drops cleanly
+ my @sql = batch_alter_table($table, { alter_drop_constraint => [ grep { $_->type eq 'FOREIGN KEY' } $table->get_constraints ] }, $options);
+
+ return (@sql, "DROP TABLE $qt$table$qt");
+ # return join("\n", @sql, "DROP TABLE $qt$table$qt");
+
+ }
+
+ method rename_table(Str $old_table, Str $new_table, $options?) {
+ my $qt = $options->{quote_table_names} || '';
+
+ return "ALTER TABLE $qt$old_table$qt RENAME TO $qt$new_table$qt";
+ }
+
+ method next_unused_name($name?) {
+# my $name = shift || '';
+ if ( !defined($used_names{$name}) ) {
+ $used_names{$name} = $name;
+ return $name;
+ }
+
+ my $i = 1;
+ while ( defined($used_names{$name . '_' . $i}) ) {
+ ++$i;
+ }
+ $name .= '_' . $i;
+ $used_names{$name} = $name;
+ return $name;
+ }
+
+ method header_comment($producer?, $comment_char?) {
+ $producer ||= caller;
+ my $now = scalar localtime;
+ my $DEFAULT_COMMENT = '-- ';
+
+ $comment_char = $DEFAULT_COMMENT
+ unless defined $comment_char;
+
+ my $header_comment =<<"HEADER_COMMENT";
+ ${comment_char}
+ ${comment_char}Created by $producer
+ ${comment_char}Created on $now
+ ${comment_char}
+HEADER_COMMENT
+
+ # Any additional stuff passed in
+ for my $additional_comment (@_) {
+ $header_comment .= "${comment_char}${additional_comment}\n";
+ }
+
+ return $header_comment;
+ }
+
+ method parse_mysql_version($v?, $target?) {
+ return undef unless $v;
+
+ $target ||= 'perl';
+
+ my @vers;
+
+ # X.Y.Z style
+ if ( $v =~ / ^ (\d+) \. (\d{1,3}) (?: \. (\d{1,3}) )? $ /x ) {
+ push @vers, $1, $2, $3;
+ }
+
+ # XYYZZ (mysql) style
+ elsif ( $v =~ / ^ (\d) (\d{2}) (\d{2}) $ /x ) {
+ push @vers, $1, $2, $3;
+ }
+
+ # XX.YYYZZZ (perl) style or simply X
+ elsif ( $v =~ / ^ (\d+) (?: \. (\d{3}) (\d{3}) )? $ /x ) {
+ push @vers, $1, $2, $3;
+ }
+ else {
+ #how do I croak sanely here?
+ die "Unparseable MySQL version '$v'";
+ }
+
+ if ($target eq 'perl') {
+ return sprintf ('%d.%03d%03d', map { $_ || 0 } (@vers) );
+ }
+ elsif ($target eq 'mysql') {
+ return sprintf ('%d%02d%02d', map { $_ || 0 } (@vers) );
+ }
+ else {
+ #how do I croak sanely here?
+ die "Unknown version target '$target'";
+ }
+ }
+
+use constant COLLISION_TAG_LENGTH => 8;
+
+method truncate_id_uniquely(Str $desired_name, Int $max_symbol_length) {
+ return $desired_name
+ unless defined $desired_name && length $desired_name > $max_symbol_length;
+
+ my $truncated_name = substr $desired_name, 0,
+ $max_symbol_length - COLLISION_TAG_LENGTH - 1;
+
+ # Hex isn't the most space-efficient, but it skirts around allowed
+ # charset issues
+ my $digest = sha1_hex($desired_name);
+ my $collision_tag = substr $digest, 0, COLLISION_TAG_LENGTH;
+
+ return $truncated_name
+ . '_'
+ . $collision_tag;
+}
+
+
+}
projects / dbsrgits/SQL-Translator-2.0-ish.git / commitdiff