[dbsrgits/SQL-Translator.git] / lib / SQL / Translator / Producer / Oracle.pm

package SQL::Translator::Producer::Oracle;

# -------------------------------------------------------------------
# $Id: Oracle.pm,v 1.6 2002-11-26 03:59:58 kycl4rk Exp $
# -------------------------------------------------------------------
# Copyright (C) 2002 Ken Y. Clark <kclark@cpan.org>,
#                    darren chamberlain <darren@cpan.org>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; version 2.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
# 02111-1307  USA
# -------------------------------------------------------------------

use strict;
use vars qw[ $VERSION $DEBUG $WARN ];
$VERSION = sprintf "%d.%02d", q$Revision: 1.6 $ =~ /(\d+)\.(\d+)/;
$DEBUG   = 0 unless defined $DEBUG;

my %translate  = (
    #
    # MySQL types
    #
    bigint     => 'number',
    double     => 'number',
    decimal    => 'number',
    float      => 'number',
    int        => 'number',
    mediumint  => 'number',
    smallint   => 'number',
    tinyint    => 'number',
    char       => 'char',
    varchar    => 'varchar2',
    tinyblob   => 'CLOB',
    blob       => 'CLOB',
    mediumblob => 'CLOB',
    longblob   => 'CLOB',
    longtext   => 'long',
    mediumtext => 'long',
    text       => 'long',
    tinytext   => 'long',
    enum       => 'varchar2',
    set        => 'varchar2',
    date       => 'date',
    datetime   => 'date',
    time       => 'date',
    timestamp  => 'date',
    year       => 'date',

    #
    # PostgreSQL types
    #
    smallint            => '',
    integer             => '',
    bigint              => '',
    decimal             => '',
    numeric             => '',
    real                => '',
    'double precision'  => '',
    serial              => '',
    bigserial           => '',
    money               => '',
    character           => '',
    'character varying' => '',
    bytea               => '',
    interval            => '',
    boolean             => '',
    point               => '',
    line                => '',
    lseg                => '',
    box                 => '',
    path                => '',
    polygon             => '',
    circle              => '',
    cidr                => '',
    inet                => '',
    macaddr             => '',
    bit                 => '',
    'bit varying'       => '',
);

#
# Oracle reserved words from:
# http://technet.oracle.com/docs/products/oracle8i/doc_library/\
# 817_doc/server.817/a85397/ap_keywd.htm
#
my %ora_reserved = map { $_, 1 } qw(
    ACCESS ADD ALL ALTER AND ANY AS ASC AUDIT 
    BETWEEN BY
    CHAR CHECK CLUSTER COLUMN COMMENT COMPRESS CONNECT CREATE CURRENT
    DATE DECIMAL DEFAULT DELETE DESC DISTINCT DROP
    ELSE EXCLUSIVE EXISTS 
    FILE FLOAT FOR FROM
    GRANT GROUP 
    HAVING
    IDENTIFIED IMMEDIATE IN INCREMENT INDEX INITIAL INSERT
    INTEGER INTERSECT INTO IS
    LEVEL LIKE LOCK LONG 
    MAXEXTENTS MINUS MLSLABEL MODE MODIFY 
    NOAUDIT NOCOMPRESS NOT NOWAIT NULL NUMBER 
    OF OFFLINE ON ONLINE OPTION OR ORDER
    PCTFREE PRIOR PRIVILEGES PUBLIC
    RAW RENAME RESOURCE REVOKE ROW ROWID ROWNUM ROWS
    SELECT SESSION SET SHARE SIZE SMALLINT START 
    SUCCESSFUL SYNONYM SYSDATE 
    TABLE THEN TO TRIGGER 
    UID UNION UNIQUE UPDATE USER
    VALIDATE VALUES VARCHAR VARCHAR2 VIEW
    WHENEVER WHERE WITH
);

my $max_id_length    = 30;
my %used_identifiers = ();
my %global_names;
my %unreserve;
my %truncated;

# -------------------------------------------------------------------
sub produce {
    my ( $translator, $data ) = @_;
    $DEBUG                    = $translator->debug;
    $WARN                     = $translator->show_warnings;
    my $no_comments           = $translator->no_comments;
    my $add_drop_table        = $translator->add_drop_table;
    my $output;

    unless ( $no_comments ) {
        $output .=  sprintf 
            "--\n-- Created by %s\n-- Created on %s\n--\n\n",
            __PACKAGE__, scalar localtime;
    }

    if ( $translator->parser_type =~ /mysql/i ) {
        $output .= 
        "-- We assume that default NLS_DATE_FORMAT has been changed\n".
        "-- but we set it here anyway to be self-consistent.\n".
        "ALTER SESSION SET NLS_DATE_FORMAT = 'YYYY-MM-DD HH24:MI:SS';\n\n";
    }

    #
    # Print create for each table
    #
    for my $table ( 
        map  { $_->[1] }
        sort { $a->[0] <=> $b->[0] }
        map  { [ $_->{'order'}, $_ ] }
        values %{ $data }
    ) { 
        my $table_name    = $table->{'table_name'};
        $table_name       = mk_name( $table_name, '', undef, 1 );
        my $table_name_ur = unreserve($table_name);

        my ( @comments, @field_decs, @trigger_decs );

        push @comments, "--\n-- Table: $table_name_ur\n--" unless $no_comments;

        my %field_name_scope;
        for my $field ( 
            map  { $_->[1] }
            sort { $a->[0] <=> $b->[0] }
            map  { [ $_->{'order'}, $_ ] }
            values %{ $table->{'fields'} }
        ) {
            #
            # Field name
            #
            my $field_name    = mk_name(
                $field->{'name'}, '', \%field_name_scope, 1 
            );
            my $field_name_ur = unreserve( $field_name, $table_name );
            my $field_str     = $field_name_ur;

            #
            # Datatype
            #
            my $check;
            my $data_type = lc $field->{'data_type'};
            my $list      = $field->{'list'} || [];
            my $commalist = join ",", @$list;

            if ( $data_type eq 'enum' ) {
                my $len = 0;
                $len = ($len < length($_)) ? length($_) : $len for (@$list);
                $check = "CHECK ($field_name IN ($commalist))";
                $field_str .= " varchar2($len)";
            }
            elsif ( $data_type eq 'set' ) {
                # XXX add a CHECK constraint maybe 
                # (trickier and slower, than enum :)
                my $len     = length $commalist;
                $field_str .= " varchar2($len) /* set $commalist */ ";
            }
            else {
                $data_type  = defined $translate{ $data_type } ?
                              $translate{ $data_type } :
                              die "Unknown datatype: $data_type\n";
                $field_str .= ' '.$data_type;
                $field_str .= '('.join(',', @{ $field->{'size'} }).')' 
                    if @{ $field->{'size'} || [] };
            }

            #
            # Default value
            #
            if ( $field->{'default'} ) {
                $field_str .= sprintf(
                    ' DEFAULT %s',
                    $field->{'default'} =~ m/null/i ? 'NULL' : 
                    "'".$field->{'default'}."'"
                );
            }

            #
            # Not null constraint
            #
            unless ( $field->{'null'} ) {
                my $constraint_name = mk_name($field_name_ur, 'nn');
                $field_str .= ' CONSTRAINT ' . $constraint_name . ' NOT NULL';
            }

            $field_str .= " $check" if $check;

            #
            # Auto_increment
            #
            if ( $field->{'is_auto_inc'} ) {
                my $base_name    = $table_name . "_". $field_name;
                my $seq_name     = mk_name( $base_name, 'sq' );
                my $trigger_name = mk_name( $base_name, 'ai' );

                push @trigger_decs, 
                    "CREATE SEQUENCE $seq_name;\n" .
                    "CREATE OR REPLACE TRIGGER $trigger_name\n" .
                    "BEFORE INSERT ON $table_name\n" .
                    "FOR EACH ROW WHEN (\n" .
                        " new.$field_name_ur IS NULL".
                        " OR new.$field_name_ur = 0\n".
                    ")\n".
                    "BEGIN\n" .
                        " SELECT $seq_name.nextval\n" .
                        " INTO :new." . $field->{'name'}."\n" .
                        " FROM dual;\n" .
                    "END;\n/";
                ;
            }

            if ( uc $field->{'data_type'} eq 'TIMESTAMP' ) {
                my $base_name = $table_name . "_". $field_name_ur;
                my $trig_name = mk_name( $base_name, 'ts' );
                push @trigger_decs, 
                    "CREATE OR REPLACE TRIGGER $trig_name\n".
                    "BEFORE INSERT OR UPDATE ON $table_name_ur\n".
                    "FOR EACH ROW WHEN (new.$field_name_ur} IS NULL)\n".
                    "BEGIN \n".
                    " SELECT sysdate INTO :new.$field_name_ur} FROM dual;\n".
                    "END;\n/";
            }

            push @field_decs, $field_str;
        }

        #
        # Index Declarations
        #
        my @index_decs = ();
        my $idx_name_default;
        for my $index ( @{ $table->{'indices'} } ) {
            my $index_name = $index->{'name'} || '';
            my $index_type = $index->{'type'} || 'normal';
            my @fields     = map { unreserve( $_, $table_name ) }
                             @{ $index->{'fields'} };
            next unless @fields;

            if ( $index_type eq 'primary_key' ) {
                $index_name = mk_name( $table_name, 'pk' );
                push @field_decs, 'CONSTRAINT '.$index_name.' PRIMARY KEY '.
                    '(' . join( ', ', @fields ) . ')';
            }
            elsif ( $index_type eq 'unique' ) {
                $index_name = mk_name( 
                    $table_name, $index_name || ++$idx_name_default
                );
                push @field_decs, 'CONSTRAINT ' . $index_name . ' UNIQUE ' .
                    '(' . join( ', ', @fields ) . ')';
            }

            elsif ( $index_type eq 'normal' ) {
                $index_name = mk_name( 
                    $table_name, $index_name || ++$idx_name_default
                );
                push @index_decs, "CREATE INDEX $index_name on $table_name (".
                    join( ', ', @fields ).  ");"; 
            }
            else {
                warn "Unknown index type ($index_type) on table $table_name.\n"
                    if $WARN;
            }
        }

        my $create_statement;
        $create_statement  = "DROP TABLE $table_name_ur;\n" if $add_drop_table;
        $create_statement .= "CREATE TABLE $table_name_ur (\n".
            join( ",\n", map { "  $_" } @field_decs ).
            "\n);"
        ;

        $output .= join( "\n\n", 
            @comments,
            $create_statement, 
            @trigger_decs, 
            @index_decs, 
            '' 
        );
    }

    if ( $WARN ) {
        if ( %truncated ) {
            warn "Truncated " . keys( %truncated ) . " names:\n";
            warn "\t" . join( "\n\t", sort keys %truncated ) . "\n";
        }

        if ( %unreserve ) {
            warn "Encounted " . keys( %unreserve ) .
                " unsafe names in schema (reserved or invalid):\n";
            warn "\t" . join( "\n\t", sort keys %unreserve ) . "\n";
        }
    }

    return $output;
}

# -------------------------------------------------------------------
sub mk_name {
    my ($basename, $type, $scope, $critical) = @_;
    my $basename_orig = $basename;
    my $max_name      = $max_id_length - (length($type) + 1);
    $basename         = substr( $basename, 0, $max_name ) 
                        if length( $basename ) > $max_name;
    my $name          = $type ? "${type}_$basename" : $basename;

    if ( $basename ne $basename_orig and $critical ) {
        my $show_type = $type ? "+'$type'" : "";
        warn "Truncating '$basename_orig'$show_type to $max_id_length ",
            "character limit to make '$name'\n" if $WARN;
        $truncated{ $basename_orig } = $name;
    }

    $scope ||= \%global_names;
    if ( my $prev = $scope->{ $name } ) {
        my $name_orig = $name;
        $name        .= sprintf( "%02d", ++$prev );
        substr($name, $max_id_length - 3) = "00" 
            if length( $name ) > $max_id_length;

        warn "The name '$name_orig' has been changed to ",
             "'$name' to make it unique.\n" if $WARN;

        $scope->{ $name_orig }++;
    }

    $scope->{ $name }++;
    return $name;
}

# -------------------------------------------------------------------
sub unreserve {
    my ( $name, $schema_obj_name ) = @_;
    my ( $suffix ) = ( $name =~ s/(\W.*)$// ) ? $1 : '';

    # also trap fields that don't begin with a letter
    return $_[0] if !$ora_reserved{ uc $name } && $name =~ /^[a-z]/i; 

    if ( $schema_obj_name ) {
        ++$unreserve{"$schema_obj_name.$name"};
    }
    else {
        ++$unreserve{"$name (table name)"};
    }

    my $unreserve = sprintf '%s_', $name;
    return $unreserve.$suffix;
}

1;

# -------------------------------------------------------------------
# All bad art is the result of good intentions.
# Oscar Wilde
# -------------------------------------------------------------------

=head1 NAME

SQL::Translator::Producer::Oracle - Oracle SQL producer

=head1 SYNOPSIS

  use SQL::Translator::Parser::MySQL;
  use SQL::Translator::Producer::Oracle;

  my $original_create = ""; # get this from somewhere...
  my $translator = SQL::Translator->new;

  $translator->parser("SQL::Translator::Parser::MySQL");
  $translator->producer("SQL::Translator::Producer::Oracle");

  my $new_create = $translator->translate($original_create);

=head1 DESCRIPTION

SQL::Translator::Producer::Oracle takes a parsed data structure,
created by a SQL::Translator::Parser subclass, and turns it into a
create string suitable for use with an Oracle database.

=head1 CREDITS

A hearty "thank-you" to Tim Bunce for much of the logic stolen from 
his "mysql2ora" script.

=head1 AUTHOR

Ken Y. Clark E<lt>kclark@cpan.orgE<gt>

=head1 SEE ALSO

perl(1).

=cut
Commit	Line	Data
16dc9970	1	package SQL::Translator::Producer::Oracle;
16dc9970	2
077ebf34	3	# -------------------------------------------------------------------
96844cae	4	# $Id: Oracle.pm,v 1.6 2002-11-26 03:59:58 kycl4rk Exp $
077ebf34	5	# -------------------------------------------------------------------
d529894e	6	# Copyright (C) 2002 Ken Y. Clark <kclark@cpan.org>,
077ebf34	7	# darren chamberlain <darren@cpan.org>
16dc9970	8	#
077ebf34	9	# This program is free software; you can redistribute it and/or
	10	# modify it under the terms of the GNU General Public License as
	11	# published by the Free Software Foundation; version 2.
	12	#
	13	# This program is distributed in the hope that it will be useful, but
	14	# WITHOUT ANY WARRANTY; without even the implied warranty of
	15	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	# General Public License for more details.
	17	#
	18	# You should have received a copy of the GNU General Public License
	19	# along with this program; if not, write to the Free Software
	20	# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
	21	# 02111-1307 USA
	22	# -------------------------------------------------------------------
	23
16dc9970	24	use strict;
96844cae	25	use vars qw[ $VERSION $DEBUG $WARN ];
96844cae	26	$VERSION = sprintf "%d.%02d", q$Revision: 1.6 $ =~ /(\d+)\.(\d+)/;
d529894e	27	$DEBUG = 0 unless defined $DEBUG;
16dc9970	28
16dc9970	29	my %translate = (
d529894e	30	#
	31	# MySQL types
	32	#
16dc9970	33	bigint => 'number',
	34	double => 'number',
	35	decimal => 'number',
	36	float => 'number',
	37	int => 'number',
	38	mediumint => 'number',
	39	smallint => 'number',
	40	tinyint => 'number',
16dc9970	41	char => 'char',
16dc9970	42	varchar => 'varchar2',
16dc9970	43	tinyblob => 'CLOB',
	44	blob => 'CLOB',
	45	mediumblob => 'CLOB',
	46	longblob => 'CLOB',
16dc9970	47	longtext => 'long',
	48	mediumtext => 'long',
	49	text => 'long',
	50	tinytext => 'long',
16dc9970	51	enum => 'varchar2',
16dc9970	52	set => 'varchar2',
16dc9970	53	date => 'date',
	54	datetime => 'date',
	55	time => 'date',
	56	timestamp => 'date',
	57	year => 'date',
d529894e	58
	59	#
	60	# PostgreSQL types
	61	#
	62	smallint => '',
	63	integer => '',
	64	bigint => '',
	65	decimal => '',
	66	numeric => '',
	67	real => '',
	68	'double precision' => '',
	69	serial => '',
	70	bigserial => '',
	71	money => '',
	72	character => '',
	73	'character varying' => '',
	74	bytea => '',
	75	interval => '',
	76	boolean => '',
	77	point => '',
	78	line => '',
	79	lseg => '',
	80	box => '',
	81	path => '',
	82	polygon => '',
	83	circle => '',
	84	cidr => '',
	85	inet => '',
	86	macaddr => '',
	87	bit => '',
	88	'bit varying' => '',
	89	);
	90
	91	#
	92	# Oracle reserved words from:
	93	# http://technet.oracle.com/docs/products/oracle8i/doc_library/\
	94	# 817_doc/server.817/a85397/ap_keywd.htm
	95	#
96844cae	96	my %ora_reserved = map { $_, 1 } qw(
d529894e	97	ACCESS ADD ALL ALTER AND ANY AS ASC AUDIT
	98	BETWEEN BY
	99	CHAR CHECK CLUSTER COLUMN COMMENT COMPRESS CONNECT CREATE CURRENT
	100	DATE DECIMAL DEFAULT DELETE DESC DISTINCT DROP
	101	ELSE EXCLUSIVE EXISTS
	102	FILE FLOAT FOR FROM
	103	GRANT GROUP
	104	HAVING
	105	IDENTIFIED IMMEDIATE IN INCREMENT INDEX INITIAL INSERT
	106	INTEGER INTERSECT INTO IS
	107	LEVEL LIKE LOCK LONG
	108	MAXEXTENTS MINUS MLSLABEL MODE MODIFY
	109	NOAUDIT NOCOMPRESS NOT NOWAIT NULL NUMBER
	110	OF OFFLINE ON ONLINE OPTION OR ORDER
	111	PCTFREE PRIOR PRIVILEGES PUBLIC
	112	RAW RENAME RESOURCE REVOKE ROW ROWID ROWNUM ROWS
	113	SELECT SESSION SET SHARE SIZE SMALLINT START
	114	SUCCESSFUL SYNONYM SYSDATE
	115	TABLE THEN TO TRIGGER
	116	UID UNION UNIQUE UPDATE USER
	117	VALIDATE VALUES VARCHAR VARCHAR2 VIEW
	118	WHENEVER WHERE WITH
16dc9970	119	);
16dc9970	120
96844cae	121	my $max_id_length = 30;
96844cae	122	my %used_identifiers = ();
d529894e	123	my %global_names;
	124	my %unreserve;
	125	my %truncated;
16dc9970	126
96844cae	127	# -------------------------------------------------------------------
077ebf34	128	sub produce {
077ebf34	129	my ( $translator, $data ) = @_;
d529894e	130	$DEBUG = $translator->debug;
96844cae	131	$WARN = $translator->show_warnings;
d529894e	132	my $no_comments = $translator->no_comments;
96844cae	133	my $add_drop_table = $translator->add_drop_table;
d529894e	134	my $output;
44fcd0b5	135
d529894e	136	unless ( $no_comments ) {
	137	$output .= sprintf
	138	"--\n-- Created by %s\n-- Created on %s\n--\n\n",
	139	__PACKAGE__, scalar localtime;
	140	}
077ebf34	141
d529894e	142	if ( $translator->parser_type =~ /mysql/i ) {
	143	$output .=
	144	"-- We assume that default NLS_DATE_FORMAT has been changed\n".
	145	"-- but we set it here anyway to be self-consistent.\n".
	146	"ALTER SESSION SET NLS_DATE_FORMAT = 'YYYY-MM-DD HH24:MI:SS';\n\n";
	147	}
16dc9970	148
	149	#
	150	# Print create for each table
	151	#
d529894e	152	for my $table (
d529894e	153	map { $_->[1] }
	154	sort { $a->[0] <=> $b->[0] }
	155	map { [ $_->{'order'}, $_ ] }
	156	values %{ $data }
	157	) {
44fcd0b5	158	my $table_name = $table->{'table_name'};
	159	$table_name = mk_name( $table_name, '', undef, 1 );
	160	my $table_name_ur = unreserve($table_name);
16dc9970	161
	162	my ( @comments, @field_decs, @trigger_decs );
	163
44fcd0b5	164	push @comments, "--\n-- Table: $table_name_ur\n--" unless $no_comments;
16dc9970	165
44fcd0b5	166	my %field_name_scope;
16dc9970	167	for my $field (
	168	map { $_->[1] }
	169	sort { $a->[0] <=> $b->[0] }
	170	map { [ $_->{'order'}, $_ ] }
	171	values %{ $table->{'fields'} }
	172	) {
	173	#
	174	# Field name
	175	#
44fcd0b5	176	my $field_name = mk_name(
	177	$field->{'name'}, '', \%field_name_scope, 1
	178	);
	179	my $field_name_ur = unreserve( $field_name, $table_name );
	180	my $field_str = $field_name_ur;
16dc9970	181
	182	#
	183	# Datatype
	184	#
44fcd0b5	185	my $check;
	186	my $data_type = lc $field->{'data_type'};
	187	my $list = $field->{'list'} \|\| [];
	188	my $commalist = join ",", @$list;
	189
	190	if ( $data_type eq 'enum' ) {
	191	my $len = 0;
	192	$len = ($len < length($_)) ? length($_) : $len for (@$list);
	193	$check = "CHECK ($field_name IN ($commalist))";
	194	$field_str .= " varchar2($len)";
	195	}
	196	elsif ( $data_type eq 'set' ) {
	197	# XXX add a CHECK constraint maybe
	198	# (trickier and slower, than enum :)
	199	my $len = length $commalist;
	200	$field_str .= " varchar2($len) /* set $commalist */ ";
	201	}
	202	else {
	203	$data_type = defined $translate{ $data_type } ?
	204	$translate{ $data_type } :
	205	die "Unknown datatype: $data_type\n";
	206	$field_str .= ' '.$data_type;
	207	$field_str .= '('.join(',', @{ $field->{'size'} }).')'
	208	if @{ $field->{'size'} \|\| [] };
	209	}
16dc9970	210
	211	#
	212	# Default value
	213	#
	214	if ( $field->{'default'} ) {
16dc9970	215	$field_str .= sprintf(
	216	' DEFAULT %s',
	217	$field->{'default'} =~ m/null/i ? 'NULL' :
	218	"'".$field->{'default'}."'"
	219	);
	220	}
	221
	222	#
	223	# Not null constraint
	224	#
	225	unless ( $field->{'null'} ) {
44fcd0b5	226	my $constraint_name = mk_name($field_name_ur, 'nn');
16dc9970	227	$field_str .= ' CONSTRAINT ' . $constraint_name . ' NOT NULL';
	228	}
	229
44fcd0b5	230	$field_str .= " $check" if $check;
44fcd0b5	231
16dc9970	232	#
	233	# Auto_increment
	234	#
	235	if ( $field->{'is_auto_inc'} ) {
44fcd0b5	236	my $base_name = $table_name . "_". $field_name;
	237	my $seq_name = mk_name( $base_name, 'sq' );
	238	my $trigger_name = mk_name( $base_name, 'ai' );
16dc9970	239
16dc9970	240	push @trigger_decs,
44fcd0b5	241	"CREATE SEQUENCE $seq_name;\n" .
d529894e	242	"CREATE OR REPLACE TRIGGER $trigger_name\n" .
d529894e	243	"BEFORE INSERT ON $table_name\n" .
44fcd0b5	244	"FOR EACH ROW WHEN (\n" .
	245	" new.$field_name_ur IS NULL".
	246	" OR new.$field_name_ur = 0\n".
	247	")\n".
d529894e	248	"BEGIN\n" .
44fcd0b5	249	" SELECT $seq_name.nextval\n" .
d529894e	250	" INTO :new." . $field->{'name'}."\n" .
16dc9970	251	" FROM dual;\n" .
44fcd0b5	252	"END;\n/";
16dc9970	253	;
	254	}
	255
44fcd0b5	256	if ( uc $field->{'data_type'} eq 'TIMESTAMP' ) {
44fcd0b5	257	my $base_name = $table_name . "_". $field_name_ur;
96844cae	258	my $trig_name = mk_name( $base_name, 'ts' );
44fcd0b5	259	push @trigger_decs,
	260	"CREATE OR REPLACE TRIGGER $trig_name\n".
	261	"BEFORE INSERT OR UPDATE ON $table_name_ur\n".
	262	"FOR EACH ROW WHEN (new.$field_name_ur} IS NULL)\n".
	263	"BEGIN \n".
	264	" SELECT sysdate INTO :new.$field_name_ur} FROM dual;\n".
	265	"END;\n/";
	266	}
	267
16dc9970	268	push @field_decs, $field_str;
	269	}
	270
	271	#
	272	# Index Declarations
	273	#
	274	my @index_decs = ();
44fcd0b5	275	my $idx_name_default;
49e1eb70	276	for my $index ( @{ $table->{'indices'} } ) {
16dc9970	277	my $index_name = $index->{'name'} \|\| '';
16dc9970	278	my $index_type = $index->{'type'} \|\| 'normal';
44fcd0b5	279	my @fields = map { unreserve( $_, $table_name ) }
	280	@{ $index->{'fields'} };
	281	next unless @fields;
16dc9970	282
16dc9970	283	if ( $index_type eq 'primary_key' ) {
44fcd0b5	284	$index_name = mk_name( $table_name, 'pk' );
44fcd0b5	285	push @field_decs, 'CONSTRAINT '.$index_name.' PRIMARY KEY '.
16dc9970	286	'(' . join( ', ', @fields ) . ')';
16dc9970	287	}
16dc9970	288	elsif ( $index_type eq 'unique' ) {
44fcd0b5	289	$index_name = mk_name(
	290	$table_name, $index_name \|\| ++$idx_name_default
	291	);
16dc9970	292	push @field_decs, 'CONSTRAINT ' . $index_name . ' UNIQUE ' .
	293	'(' . join( ', ', @fields ) . ')';
	294	}
	295
	296	elsif ( $index_type eq 'normal' ) {
44fcd0b5	297	$index_name = mk_name(
	298	$table_name, $index_name \|\| ++$idx_name_default
	299	);
16dc9970	300	push @index_decs, "CREATE INDEX $index_name on $table_name (".
44fcd0b5	301	join( ', ', @fields ). ");";
16dc9970	302	}
16dc9970	303	else {
96844cae	304	warn "Unknown index type ($index_type) on table $table_name.\n"
96844cae	305	if $WARN;
16dc9970	306	}
	307	}
	308
96844cae	309	my $create_statement;
	310	$create_statement = "DROP TABLE $table_name_ur;\n" if $add_drop_table;
	311	$create_statement .= "CREATE TABLE $table_name_ur (\n".
16dc9970	312	join( ",\n", map { " $_" } @field_decs ).
44fcd0b5	313	"\n);"
16dc9970	314	;
	315
	316	$output .= join( "\n\n",
	317	@comments,
	318	$create_statement,
	319	@trigger_decs,
	320	@index_decs,
	321	''
	322	);
	323	}
	324
96844cae	325	if ( $WARN ) {
	326	if ( %truncated ) {
	327	warn "Truncated " . keys( %truncated ) . " names:\n";
	328	warn "\t" . join( "\n\t", sort keys %truncated ) . "\n";
	329	}
	330
	331	if ( %unreserve ) {
	332	warn "Encounted " . keys( %unreserve ) .
	333	" unsafe names in schema (reserved or invalid):\n";
	334	warn "\t" . join( "\n\t", sort keys %unreserve ) . "\n";
	335	}
	336	}
	337
d529894e	338	return $output;
16dc9970	339	}
16dc9970	340
d529894e	341	# -------------------------------------------------------------------
	342	sub mk_name {
	343	my ($basename, $type, $scope, $critical) = @_;
	344	my $basename_orig = $basename;
	345	my $max_name = $max_id_length - (length($type) + 1);
96844cae	346	$basename = substr( $basename, 0, $max_name )
96844cae	347	if length( $basename ) > $max_name;
d529894e	348	my $name = $type ? "${type}_$basename" : $basename;
	349
	350	if ( $basename ne $basename_orig and $critical ) {
	351	my $show_type = $type ? "+'$type'" : "";
	352	warn "Truncating '$basename_orig'$show_type to $max_id_length ",
96844cae	353	"character limit to make '$name'\n" if $WARN;
96844cae	354	$truncated{ $basename_orig } = $name;
d529894e	355	}
	356
	357	$scope \|\|= \%global_names;
96844cae	358	if ( my $prev = $scope->{ $name } ) {
	359	my $name_orig = $name;
	360	$name .= sprintf( "%02d", ++$prev );
	361	substr($name, $max_id_length - 3) = "00"
	362	if length( $name ) > $max_id_length;
	363
	364	warn "The name '$name_orig' has been changed to ",
	365	"'$name' to make it unique.\n" if $WARN;
	366
	367	$scope->{ $name_orig }++;
	368	}
	369
	370	$scope->{ $name }++;
d529894e	371	return $name;
	372	}
	373
	374	# -------------------------------------------------------------------
	375	sub unreserve {
96844cae	376	my ( $name, $schema_obj_name ) = @_;
96844cae	377	my ( $suffix ) = ( $name =~ s/(\W.*)$// ) ? $1 : '';
d529894e	378
d529894e	379	# also trap fields that don't begin with a letter
96844cae	380	return $_[0] if !$ora_reserved{ uc $name } && $name =~ /^[a-z]/i;
d529894e	381
	382	if ( $schema_obj_name ) {
	383	++$unreserve{"$schema_obj_name.$name"};
	384	}
	385	else {
	386	++$unreserve{"$name (table name)"};
	387	}
	388
	389	my $unreserve = sprintf '%s_', $name;
	390	return $unreserve.$suffix;
	391	}
	392
16dc9970	393	1;
16dc9970	394
d529894e	395	# -------------------------------------------------------------------
16dc9970	396	# All bad art is the result of good intentions.
16dc9970	397	# Oscar Wilde
d529894e	398	# -------------------------------------------------------------------
16dc9970	399
	400	=head1 NAME
	401
	402	SQL::Translator::Producer::Oracle - Oracle SQL producer
	403
	404	=head1 SYNOPSIS
	405
077ebf34	406	use SQL::Translator::Parser::MySQL;
16dc9970	407	use SQL::Translator::Producer::Oracle;
16dc9970	408
077ebf34	409	my $original_create = ""; # get this from somewhere...
	410	my $translator = SQL::Translator->new;
	411
	412	$translator->parser("SQL::Translator::Parser::MySQL");
	413	$translator->producer("SQL::Translator::Producer::Oracle");
	414
	415	my $new_create = $translator->translate($original_create);
	416
16dc9970	417	=head1 DESCRIPTION
16dc9970	418
077ebf34	419	SQL::Translator::Producer::Oracle takes a parsed data structure,
	420	created by a SQL::Translator::Parser subclass, and turns it into a
	421	create string suitable for use with an Oracle database.
16dc9970	422
d529894e	423	=head1 CREDITS
	424
	425	A hearty "thank-you" to Tim Bunce for much of the logic stolen from
	426	his "mysql2ora" script.
16dc9970	427
	428	=head1 AUTHOR
	429
d529894e	430	Ken Y. Clark E<lt>kclark@cpan.orgE<gt>
16dc9970	431
	432	=head1 SEE ALSO
	433
	434	perl(1).
	435
	436	=cut