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

package SQL::Translator::Parser::Oracle;

# -------------------------------------------------------------------
# $Id: Oracle.pm,v 1.17 2004-02-11 21:36:00 kycl4rk Exp $
# -------------------------------------------------------------------
# Copyright (C) 2002-4 SQLFairy Authors
#
# 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
# -------------------------------------------------------------------

=head1 NAME

SQL::Translator::Parser::Oracle - parser for Oracle

=head1 SYNOPSIS

  use SQL::Translator;
  use SQL::Translator::Parser::Oracle;

  my $translator = SQL::Translator->new;
  $translator->parser("SQL::Translator::Parser::Oracle");

=head1 DESCRIPTION

From http://www.ss64.com/ora/table_c.html:

 CREATE [GLOBAL TEMPORARY] TABLE [schema.]table (tbl_defs,...)
     [ON COMMIT {DELETE|PRESERVE} ROWS]
         [storage_options | CLUSTER cluster_name (col1, col2,... )
            | ORGANIZATION {HEAP [storage_options] 
            | INDEX idx_organized_tbl_clause}]
               [LOB_storage_clause][varray_clause][nested_storage_clause]
                   partitioning_options
                      [[NO]CACHE] [[NO]MONITORING] [PARALLEL parallel_clause]
                         [ENABLE enable_clause | DISABLE disable_clause]
                             [AS subquery]

tbl_defs:
   column datatype [DEFAULT expr] [column_constraint(s)]
   table_constraint
   table_ref_constraint

storage_options:
   PCTFREE int
   PCTUSED int
   INITTRANS int
   MAXTRANS int
   STORAGE storage_clause
   TABLESPACE tablespace
   [LOGGING|NOLOGGING]

idx_organized_tbl_clause:
   storage_option(s) [PCTTHRESHOLD int]
     [COMPRESS int|NOCOMPRESS]
         [ [INCLUDING column_name] OVERFLOW [storage_option(s)] ]

nested_storage_clause:
   NESTED TABLE nested_item STORE AS storage_table
      [RETURN AS {LOCATOR|VALUE} ]

partitioning_options:
   Partition_clause {ENABLE|DISABLE} ROW MOVEMENT

Column Constraints
(http://www.ss64.com/ora/clause_constraint_col.html)

   CONSTRAINT constrnt_name {UNIQUE|PRIMARY KEY} constrnt_state

   CONSTRAINT constrnt_name CHECK(condition) constrnt_state

   CONSTRAINT constrnt_name [NOT] NULL constrnt_state

   CONSTRAINT constrnt_name REFERENCES [schema.]table[(column)]
      [ON DELETE {CASCADE|SET NULL}] constrnt_state

constrnt_state   
    [[NOT] DEFERRABLE] [INITIALLY {IMMEDIATE|DEFERRED}]
       [RELY | NORELY] [USING INDEX using_index_clause]
          [ENABLE|DISABLE] [VALIDATE|NOVALIDATE]
              [EXCEPTIONS INTO [schema.]table]

Note that probably not all of the above syntax is supported, but the grammar 
was altered to better handle the syntax created by DDL::Oracle.

=cut

use strict;
use vars qw[ $DEBUG $VERSION $GRAMMAR @EXPORT_OK ];
$VERSION = sprintf "%d.%02d", q$Revision: 1.17 $ =~ /(\d+)\.(\d+)/;
$DEBUG   = 0 unless defined $DEBUG;

use Data::Dumper;
use Parse::RecDescent;
use Exporter;
use base qw(Exporter);

@EXPORT_OK = qw(parse);

# Enable warnings within the Parse::RecDescent module.
$::RD_ERRORS = 1; # Make sure the parser dies when it encounters an error
$::RD_WARN   = 1; # Enable warnings. This will warn on unused rules &c.
$::RD_HINT   = 1; # Give out hints to help fix problems.

my $parser; 

$GRAMMAR = q!

{ my ( %tables, %indices, $table_order, @table_comments ) }

#
# The "eofile" rule makes the parser fail if any "statement" rule
# fails.  Otherwise, the first successful match by a "statement" 
# won't cause the failure needed to know that the parse, as a whole,
# failed. -ky
#
startrule : statement(s) eofile 
    { 
        $return = {
            tables  => \%tables,
            indices => \%indices,
        };
    }

eofile : /^\Z/

statement : remark
    | prompt
    | create
    | table_comment
    | comment_on_table
    | comment_on_column
    | alter
    | drop
    | <error>

alter : /alter/i WORD /[^;]+/ ';'
    { @table_comments = () }

drop : /drop/i TABLE ';'

drop : /drop/i WORD(s) ';'
    { @table_comments = () }

create : create_table table_name '(' create_definition(s /,/) ')' table_option(s?) ';'
    {
        my $table_name                       = $item{'table_name'};
        $tables{ $table_name }{'order'}      = ++$table_order;
        $tables{ $table_name }{'table_name'} = $table_name;

        if ( @table_comments ) {
            $tables{ $table_name }{'comments'} = [ @table_comments ];
            @table_comments = ();
        }

        my $i = 1;
        my @constraints;
        for my $definition ( @{ $item[4] } ) {
            if ( $definition->{'type'} eq 'field' ) {
                my $field_name = $definition->{'name'};
                $tables{ $table_name }{'fields'}{ $field_name } = 
                    { %$definition, order => $i };
                $i++;
				
                for my $constraint ( @{ $definition->{'constraints'} || [] } ) {
                    $constraint->{'fields'} = [ $field_name ];
                    push @{ $tables{ $table_name }{'constraints'} }, 
                        $constraint;
                }
            }
            elsif ( $definition->{'type'} eq 'constraint' ) {
                $definition->{'type'} = $definition->{'constraint_type'};
                push @{ $tables{ $table_name }{'constraints'} }, $definition;
            }
            else {
                push @{ $tables{ $table_name }{'indices'} }, $definition;
            }
        }

        for my $option ( @{ $item[6] } ) {
            push @{ $tables{ $table_name }{'table_options'} }, $option;
        }

        1;
    }

create : /create/i /index/i WORD /on/i table_name parens_word_list table_option(?) ';'
    {
        my $table_name = $item[5];
        push @{ $indices{ $table_name } }, {
            name   => $item[3],
            type   => 'normal',
            fields => $item[6][0],
        };
    }

# Create anything else (e.g., domain, function, etc.)
create : /create/i WORD /[^;]+/ ';'
    { @table_comments = () }

global_temporary: /global/i /temporary/i

table_name : NAME '.' NAME
    { $item[3] }
    | NAME 
    { $item[1] }

create_definition : field
    | table_constraint
    | <error>

table_comment : comment
    {
        my $comment = $item[1];
        $return     = $comment;
        push @table_comments, $comment;
    }

comment : /^\s*(?:#|-{2}).*\n/
    {
        my $comment =  $item[1];
        $comment    =~ s/^\s*(#|-{2})\s*//;
        $comment    =~ s/\s*$//;
        $return     = $comment;
    }

comment : /\/\*/ /[^\*]+/ /\*\// 
    {
        my $comment = $item[2];
        $comment    =~ s/^\s*|\s*$//g;
        $return = $comment;
    }

remark : /^REM\s+.*\n/

prompt : /prompt/i /(table|index|sequence|trigger)/i ';'

prompt : /prompt\s+create\s+.*\n/i

comment_on_table : /comment/i /on/i /table/i table_name /is/i comment_phrase ';'
    {
        push @{ $tables{ $item{'table_name'} }{'comments'} }, $item{'comment_phrase'};
    }

comment_on_column : /comment/i /on/i /column/i column_name /is/i comment_phrase ';'
    {
        my $table_name = $item[4]->{'table'};
        my $field_name = $item[4]->{'field'};
        push @{ $tables{ $table_name }{'fields'}{ $field_name }{'comments'} }, 
            $item{'comment_phrase'};
    }

column_name : NAME '.' NAME
    { $return = { table => $item[1], field => $item[3] } }

comment_phrase : /'.*?'/ 
    { 
        my $val = $item[1];
        $val =~ s/^'|'$//g;
        $return = $val;
    }

field : comment(s?) field_name data_type field_meta(s?) comment(s?)
    {
        my ( $is_pk, $default, @constraints );
        my $null = 1;
        for my $meta ( @{ $item[4] } ) {
            if ( $meta->{'type'} eq 'default' ) {
                $default = $meta;
                next;
            }
            elsif ( $meta->{'type'} eq 'not_null' ) {
                $null = 0;
                next;
            }
            elsif ( $meta->{'type'} eq 'primary_key' ) {
                $is_pk = 1;
            }

            push @constraints, $meta if $meta->{'supertype'} eq 'constraint';
        }

        my @comments = ( @{ $item[1] }, @{ $item[5] } );

        $return = { 
            type           => 'field',
            name           => $item{'field_name'}, 
            data_type      => $item{'data_type'}{'type'},
            size           => $item{'data_type'}{'size'},
            null           => $null,
            default        => $default->{'value'},
            is_primary_key => $is_pk,
            constraints    => [ @constraints ],
            comments       => [ @comments ],
        } 
    }
    | <error>

field_name : NAME

data_type : ora_data_type parens_value_list(?)
    { 
        $return  = { 
            type => $item[1],
            size => $item[2][0] || '',
        } 
    }

column_constraint : constraint_name(?) column_constraint_type 
    {
        my $desc       = $item{'column_constraint_type'};
        my $type       = $desc->{'type'};
        my $fields     = $desc->{'fields'}     || [];
        my $expression = $desc->{'expression'} || '';

        $return              =  {
            supertype        => 'constraint',
            name             => $item{'constraint_name(?)'}[0] || '',
            type             => $type,
            expression       => $type eq 'check' ? $expression : '',
            deferrable       => $item{'deferrable'},
            deferred         => $item{'deferred'},
            reference_table  => $desc->{'reference_table'},
            reference_fields => $desc->{'reference_fields'},
#            match_type       => $desc->{'match_type'},
#            on_update_do     => $desc->{'on_update_do'},
        } 
    }

constraint_name : /constraint/i NAME { $item[2] }

column_constraint_type : /not null/i { $return = { type => 'not_null' } }
    | /null/ 
        { $return = { type => 'null' } }
    | /unique/ 
        { $return = { type => 'unique' } }
    | /primary key/i 
        { $return = { type => 'primary_key' } }
    | /check/i '(' /[^)]+/ ')' 
        { $return = { type => 'check', expression => $item[2] } }
    | /references/i table_name parens_word_list(?) on_delete_do(?) 
    {
        $return              =  {
            type             => 'foreign_key',
            reference_table  => $item[2],
            reference_fields => $item[3][0],
#            match_type       => $item[4][0],
            on_delete_do     => $item[5][0],
        }
    }

#constraint_state : deferrable { $return = { type => $item[1] } }
#    | deferred { $return = { type => $item[1] } }
#    | /(no)?rely/ { $return = { type => $item[1] } }
#    | /using/i /index/i using_index_clause 
#        { $return = { type => 'using_index', index => $item[3] }
#    | (dis)?enable { $return = { type => $item[1] } }
#    | (no)?validate { $return = { type => $item[1] } }
#    | /exceptions/i /into/i table_name 
#        { $return = { type => 'exceptions_into', table => $item[3] } }

deferrable : /not/i /deferrable/i 
    { $return = 'not_deferrable' }
    | /deferrable/i 
    { $return = 'deferrable' }

deferred : /initially/i /(deferred|immediate)/i { $item[2] }

ora_data_type :
    /(n?varchar2|varchar)/i { $return = 'varchar2' }
    |
    /n?char/i { $return = 'character' }
    |
	/n?dec/i { $return = 'decimal' }
	|
    /number/i { $return = 'number' }
    |
    /integer/i { $return = 'integer' }
    |
    /(pls_integer|binary_integer)/i { $return = 'integer' }
    |
    /interval\s+day/i { $return = 'interval_day' }
    |
    /interval\s+year/i { $return = 'interval_year' }
    |
    /long\s+raw/i { $return = 'long_raw' }
    |
    /(long|date|timestamp|raw|rowid|urowid|mlslabel|clob|nclob|blob|bfile)/i { $item[1] }

parens_value_list : '(' VALUE(s /,/) ')'
    { $item[2] }

parens_word_list : '(' WORD(s /,/) ')'
    { $item[2] }

field_meta : default_val
    | column_constraint

default_val  : /default/i /(?:')?[\w\d.-]*(?:')?/ 
    { 
        my $val =  $item[2];
        $val    =~ s/'//g if defined $val; 
        $return =  {
            supertype => 'constraint',
            type      => 'default',
            value     => $val,
        }
    }

create_table : /create/i global_temporary(?) /table/i

table_option : /organization/i WORD
    {
        $return = { 'ORGANIZATION' => $item[2] }
    }

table_option : /nomonitoring/i
    {
        $return = { 'NOMONITORING' => undef }
    }

table_option : /parallel/i '(' key_value(s) ')'
    {
        $return = { 'PARALLEL' => $item[3] }
    }

key_value : WORD VALUE
    {
        $return = { $item[1], $item[2] }
    }

table_option : /[^;]+/

table_constraint : comment(s?) constraint_name(?) table_constraint_type deferrable(?) deferred(?) comment(s?)
    {
        my $desc       = $item{'table_constraint_type'};
        my $type       = $desc->{'type'};
        my $fields     = $desc->{'fields'};
        my $expression = $desc->{'expression'};
        my @comments   = ( @{ $item[1] }, @{ $item[-1] } );

        $return              =  {
            name             => $item{'constraint_name(?)'}[0] || '',
            type             => 'constraint',
            constraint_type  => $type,
            fields           => $type ne 'check' ? $fields : [],
            expression       => $type eq 'check' ? $expression : '',
            deferrable       => $item{'deferrable(?)'},
            deferred         => $item{'deferred(?)'},
            reference_table  => $desc->{'reference_table'},
            reference_fields => $desc->{'reference_fields'},
#            match_type       => $desc->{'match_type'}[0],
            on_delete_do     => $desc->{'on_delete_do'},
            on_update_do     => $desc->{'on_update_do'},
            comments         => [ @comments ],
        } 
    }

table_constraint_type : /primary key/i '(' NAME(s /,/) ')' 
    { 
        $return = {
            type   => 'primary_key',
            fields => $item[3],
        }
    }
    |
    /unique/i '(' NAME(s /,/) ')' 
    { 
        $return    =  {
            type   => 'unique',
            fields => $item[3],
        }
    }
    |
    /check/ '(' /(.+)/ ')'
    {
        $return        =  {
            type       => 'check',
            expression => $item[3],
        }
    }
    |
    /foreign key/i '(' NAME(s /,/) ')' /references/i table_name parens_word_list(?) on_delete_do(?)
    {
        $return              =  {
            type             => 'foreign_key',
            fields           => $item[3],
            reference_table  => $item[6],
            reference_fields => $item[7][0],
            match_type       => $item[8][0],
            on_delete_do     => $item[9][0],
            on_update_do     => $item[10][0],
        }
    }

on_delete_do : /on delete/i WORD(s)
    { $item[2] }

WORD : /\w+/

NAME : /\w+/ { $item[1] }

TABLE : /table/i

VALUE   : /[-+]?\.?\d+(?:[eE]\d+)?/
    { $item[1] }
    | /'.*?'/   # XXX doesn't handle embedded quotes
    { $item[1] }
    | /NULL/
    { 'NULL' }

!;

# -------------------------------------------------------------------
sub parse {
    my ( $translator, $data ) = @_;
    $parser ||= Parse::RecDescent->new($GRAMMAR);

    local $::RD_TRACE = $translator->trace ? 1 : undef;
    local $DEBUG      = $translator->debug;

    unless (defined $parser) {
        return $translator->error("Error instantiating Parse::RecDescent ".
            "instance: Bad grammer");
    }

    my $result = $parser->startrule( $data );
    die "Parse failed.\n" unless defined $result;
    warn Dumper($result) if $DEBUG;

    my $schema  = $translator->schema;
    my $indices = $result->{'indices'};
    my @tables  = sort { 
        $result->{'tables'}{ $a }{'order'} 
        <=> 
        $result->{'tables'}{ $b }{'order'}
    } keys %{ $result->{'tables'} };

    for my $table_name ( @tables ) {
        my $tdata    =  $result->{'tables'}{ $table_name };
        next unless $tdata->{'table_name'};
        my $table    =  $schema->add_table( 
            name     => $tdata->{'table_name'},
            comments => $tdata->{'comments'},
        ) or die $schema->error;

        $table->options( $tdata->{'table_options'} );

        my @fields = sort { 
            $tdata->{'fields'}->{$a}->{'order'} 
            <=>
            $tdata->{'fields'}->{$b}->{'order'}
        } keys %{ $tdata->{'fields'} };

        for my $fname ( @fields ) {
            my $fdata = $tdata->{'fields'}{ $fname };
            my $field = $table->add_field(
                name              => $fdata->{'name'},
                data_type         => $fdata->{'data_type'},
                size              => $fdata->{'size'},
                default_value     => $fdata->{'default'},
                is_auto_increment => $fdata->{'is_auto_inc'},
                is_nullable       => $fdata->{'null'},
                comments          => $fdata->{'comments'},
            ) or die $table->error;

            for my $cdata ( @{ $fdata->{'constraints'} } ) {
                next unless $cdata->{'type'} eq 'foreign_key';
                $cdata->{'fields'} ||= [ $field->name ];
                push @{ $tdata->{'constraints'} }, $cdata;
            }
        }

        push @{ $tdata->{'indices'} }, @{ $indices->{ $table_name } || [] };

        for my $idata ( @{ $tdata->{'indices'} || [] } ) {
            my $index  =  $table->add_index(
                name   => $idata->{'name'},
                type   => uc $idata->{'type'},
                fields => $idata->{'fields'},
            ) or die $table->error;
        }

        for my $cdata ( @{ $tdata->{'constraints'} || [] } ) {
            my $constraint       =  $table->add_constraint(
                name             => $cdata->{'name'},
                type             => $cdata->{'type'},
                fields           => $cdata->{'fields'},
                reference_table  => $cdata->{'reference_table'},
                reference_fields => $cdata->{'reference_fields'},
                match_type       => $cdata->{'match_type'} || '',
                on_delete        => $cdata->{'on_delete_do'},
                on_update        => $cdata->{'on_update_do'},
            ) or die $table->error;
        }
    }

    return 1;
}

1;

# -------------------------------------------------------------------
# Something there is that doesn't love a wall.
# Robert Frost
# -------------------------------------------------------------------

=pod

=head1 AUTHOR

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

=head1 SEE ALSO

SQL::Translator, Parse::RecDescent, DDL::Oracle.

=cut
Commit	Line	Data
17cae8ab	1	package SQL::Translator::Parser::Oracle;
	2
	3	# -------------------------------------------------------------------
87053733	4	# $Id: Oracle.pm,v 1.17 2004-02-11 21:36:00 kycl4rk Exp $
17cae8ab	5	# -------------------------------------------------------------------
90075866	6	# Copyright (C) 2002-4 SQLFairy Authors
17cae8ab	7	#
	8	# This program is free software; you can redistribute it and/or
	9	# modify it under the terms of the GNU General Public License as
	10	# published by the Free Software Foundation; version 2.
	11	#
	12	# This program is distributed in the hope that it will be useful, but
	13	# WITHOUT ANY WARRANTY; without even the implied warranty of
	14	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	15	# General Public License for more details.
	16	#
	17	# You should have received a copy of the GNU General Public License
	18	# along with this program; if not, write to the Free Software
	19	# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
	20	# 02111-1307 USA
	21	# -------------------------------------------------------------------
	22
	23	=head1 NAME
	24
	25	SQL::Translator::Parser::Oracle - parser for Oracle
	26
	27	=head1 SYNOPSIS
	28
	29	use SQL::Translator;
	30	use SQL::Translator::Parser::Oracle;
	31
	32	my $translator = SQL::Translator->new;
	33	$translator->parser("SQL::Translator::Parser::Oracle");
	34
	35	=head1 DESCRIPTION
	36
	37	From http://www.ss64.com/ora/table_c.html:
	38
	39	CREATE [GLOBAL TEMPORARY] TABLE [schema.]table (tbl_defs,...)
	40	[ON COMMIT {DELETE\|PRESERVE} ROWS]
	41	[storage_options \| CLUSTER cluster_name (col1, col2,... )
	42	\| ORGANIZATION {HEAP [storage_options]
	43	\| INDEX idx_organized_tbl_clause}]
	44	[LOB_storage_clause][varray_clause][nested_storage_clause]
	45	partitioning_options
	46	[[NO]CACHE] [[NO]MONITORING] [PARALLEL parallel_clause]
	47	[ENABLE enable_clause \| DISABLE disable_clause]
	48	[AS subquery]
	49
	50	tbl_defs:
	51	column datatype [DEFAULT expr] [column_constraint(s)]
	52	table_constraint
	53	table_ref_constraint
	54
	55	storage_options:
	56	PCTFREE int
	57	PCTUSED int
	58	INITTRANS int
	59	MAXTRANS int
	60	STORAGE storage_clause
	61	TABLESPACE tablespace
	62	[LOGGING\|NOLOGGING]
	63
	64	idx_organized_tbl_clause:
	65	storage_option(s) [PCTTHRESHOLD int]
	66	[COMPRESS int\|NOCOMPRESS]
	67	[ [INCLUDING column_name] OVERFLOW [storage_option(s)] ]
	68
	69	nested_storage_clause:
	70	NESTED TABLE nested_item STORE AS storage_table
71	[RETURN AS {LOCATOR\|VALUE} ]
72
73	partitioning_options:
74	Partition_clause {ENABLE\|DISABLE} ROW MOVEMENT
75
76	Column Constraints
77	(http://www.ss64.com/ora/clause_constraint_col.html)
78
79	CONSTRAINT constrnt_name {UNIQUE\|PRIMARY KEY} constrnt_state
80
81	CONSTRAINT constrnt_name CHECK(condition) constrnt_state
82
83	CONSTRAINT constrnt_name [NOT] NULL constrnt_state
84
85	CONSTRAINT constrnt_name REFERENCES [schema.]table[(column)]
86	[ON DELETE {CASCADE\|SET NULL}] constrnt_state
87
88	constrnt_state
89	[[NOT] DEFERRABLE] [INITIALLY {IMMEDIATE\|DEFERRED}]
90	[RELY \| NORELY] [USING INDEX using_index_clause]
91	[ENABLE\|DISABLE] [VALIDATE\|NOVALIDATE]
92	[EXCEPTIONS INTO [schema.]table]
93
3b2be65a	94	Note that probably not all of the above syntax is supported, but the grammar
	95	was altered to better handle the syntax created by DDL::Oracle.
	96
17cae8ab	97	=cut
	98
	99	use strict;
	100	use vars qw[ $DEBUG $VERSION $GRAMMAR @EXPORT_OK ];
87053733	101	$VERSION = sprintf "%d.%02d", q$Revision: 1.17 $ =~ /(\d+)\.(\d+)/;
17cae8ab	102	$DEBUG = 0 unless defined $DEBUG;
	103
	104	use Data::Dumper;
	105	use Parse::RecDescent;
	106	use Exporter;
	107	use base qw(Exporter);
	108
	109	@EXPORT_OK = qw(parse);
	110
	111	# Enable warnings within the Parse::RecDescent module.
	112	$::RD_ERRORS = 1; # Make sure the parser dies when it encounters an error
	113	$::RD_WARN = 1; # Enable warnings. This will warn on unused rules &c.
	114	$::RD_HINT = 1; # Give out hints to help fix problems.
	115
	116	my $parser;
	117
	118	$GRAMMAR = q!
	119
87053733	120	{ my ( %tables, %indices, $table_order, @table_comments ) }
17cae8ab	121
	122	#
	123	# The "eofile" rule makes the parser fail if any "statement" rule
	124	# fails. Otherwise, the first successful match by a "statement"
	125	# won't cause the failure needed to know that the parse, as a whole,
	126	# failed. -ky
	127	#
87053733	128	startrule : statement(s) eofile
	129	{
	130	$return = {
	131	tables => \%tables,
	132	indices => \%indices,
	133	};
	134	}
17cae8ab	135
	136	eofile : /^\Z/
	137
87053733	138	statement : remark
	139	\| prompt
	140	\| create
f77a985b	141	\| table_comment
067e3cf4	142	\| comment_on_table
	143	\| comment_on_column
	144	\| alter
	145	\| drop
	146	\| <error>
17cae8ab	147
44567b47	148	alter : /alter/i WORD /[^;]+/ ';'
067e3cf4	149	{ @table_comments = () }
	150
	151	drop : /drop/i TABLE ';'
	152
	153	drop : /drop/i WORD(s) ';'
	154	{ @table_comments = () }
44567b47	155
87053733	156	create : create_table table_name '(' create_definition(s /,/) ')' table_option(s?) ';'
17cae8ab	157	{
	158	my $table_name = $item{'table_name'};
	159	$tables{ $table_name }{'order'} = ++$table_order;
	160	$tables{ $table_name }{'table_name'} = $table_name;
	161
067e3cf4	162	if ( @table_comments ) {
	163	$tables{ $table_name }{'comments'} = [ @table_comments ];
	164	@table_comments = ();
	165	}
	166
17cae8ab	167	my $i = 1;
17cae8ab	168	my @constraints;
87053733	169	for my $definition ( @{ $item[4] } ) {
17cae8ab	170	if ( $definition->{'type'} eq 'field' ) {
	171	my $field_name = $definition->{'name'};
	172	$tables{ $table_name }{'fields'}{ $field_name } =
	173	{ %$definition, order => $i };
	174	$i++;
	175
17cae8ab	176	for my $constraint ( @{ $definition->{'constraints'} \|\| [] } ) {
	177	$constraint->{'fields'} = [ $field_name ];
	178	push @{ $tables{ $table_name }{'constraints'} },
	179	$constraint;
	180	}
	181	}
	182	elsif ( $definition->{'type'} eq 'constraint' ) {
	183	$definition->{'type'} = $definition->{'constraint_type'};
f77a985b	184	push @{ $tables{ $table_name }{'constraints'} }, $definition;
17cae8ab	185	}
	186	else {
	187	push @{ $tables{ $table_name }{'indices'} }, $definition;
	188	}
	189	}
	190
87053733	191	for my $option ( @{ $item[6] } ) {
7c4cf567	192	push @{ $tables{ $table_name }{'table_options'} }, $option;
17cae8ab	193	}
	194
	195	1;
	196	}
	197
4783cccd	198	create : /create/i /index/i WORD /on/i table_name parens_word_list table_option(?) ';'
b85a95ec	199	{
b85a95ec	200	my $table_name = $item[5];
87053733	201	push @{ $indices{ $table_name } }, {
b85a95ec	202	name => $item[3],
	203	type => 'normal',
	204	fields => $item[6][0],
	205	};
	206	}
	207
17cae8ab	208	# Create anything else (e.g., domain, function, etc.)
17cae8ab	209	create : /create/i WORD /[^;]+/ ';'
067e3cf4	210	{ @table_comments = () }
17cae8ab	211
	212	global_temporary: /global/i /temporary/i
	213
	214	table_name : NAME '.' NAME
	215	{ $item[3] }
	216	\| NAME
	217	{ $item[1] }
	218
	219	create_definition : field
	220	\| table_constraint
	221	\| <error>
	222
f77a985b	223	table_comment : comment
	224	{
	225	my $comment = $item[1];
	226	$return = $comment;
	227	push @table_comments, $comment;
	228	}
	229
17cae8ab	230	comment : /^\s(?:#\|-{2}).\n/
067e3cf4	231	{
39129b47	232	my $comment = $item[1];
	233	$comment =~ s/^\s(#\|-{2})\s//;
	234	$comment =~ s/\s*$//;
	235	$return = $comment;
f77a985b	236	}
	237
	238	comment : /\/\/ /[^\]+/ /\*\//
	239	{
	240	my $comment = $item[2];
	241	$comment =~ s/^\s\|\s$//g;
	242	$return = $comment;
067e3cf4	243	}
17cae8ab	244
87053733	245	remark : /^REM\s+.*\n/
	246
	247	prompt : /prompt/i /(table\|index\|sequence\|trigger)/i ';'
	248
	249	prompt : /prompt\s+create\s+.*\n/i
	250
947dfd86	251	comment_on_table : /comment/i /on/i /table/i table_name /is/i comment_phrase ';'
17cae8ab	252	{
947dfd86	253	push @{ $tables{ $item{'table_name'} }{'comments'} }, $item{'comment_phrase'};
17cae8ab	254	}
17cae8ab	255
947dfd86	256	comment_on_column : /comment/i /on/i /column/i column_name /is/i comment_phrase ';'
17cae8ab	257	{
	258	my $table_name = $item[4]->{'table'};
	259	my $field_name = $item[4]->{'field'};
	260	push @{ $tables{ $table_name }{'fields'}{ $field_name }{'comments'} },
947dfd86	261	$item{'comment_phrase'};
17cae8ab	262	}
	263
	264	column_name : NAME '.' NAME
	265	{ $return = { table => $item[1], field => $item[3] } }
	266
947dfd86	267	comment_phrase : /'.*?'/
	268	{
	269	my $val = $item[1];
	270	$val =~ s/^'\|'$//g;
	271	$return = $val;
	272	}
17cae8ab	273
	274	field : comment(s?) field_name data_type field_meta(s?) comment(s?)
	275	{
947dfd86	276	my ( $is_pk, $default, @constraints );
947dfd86	277	my $null = 1;
17cae8ab	278	for my $meta ( @{ $item[4] } ) {
947dfd86	279	if ( $meta->{'type'} eq 'default' ) {
	280	$default = $meta;
	281	next;
	282	}
	283	elsif ( $meta->{'type'} eq 'not_null' ) {
	284	$null = 0;
	285	next;
	286	}
	287	elsif ( $meta->{'type'} eq 'primary_key' ) {
	288	$is_pk = 1;
	289	}
	290
	291	push @constraints, $meta if $meta->{'supertype'} eq 'constraint';
17cae8ab	292	}
17cae8ab	293
947dfd86	294	my @comments = ( @{ $item[1] }, @{ $item[5] } );
17cae8ab	295
	296	$return = {
	297	type => 'field',
	298	name => $item{'field_name'},
	299	data_type => $item{'data_type'}{'type'},
	300	size => $item{'data_type'}{'size'},
17cae8ab	301	null => $null,
17cae8ab	302	default => $default->{'value'},
947dfd86	303	is_primary_key => $is_pk,
17cae8ab	304	constraints => [ @constraints ],
947dfd86	305	comments => [ @comments ],
17cae8ab	306	}
	307	}
	308	\| <error>
	309
	310	field_name : NAME
	311
	312	data_type : ora_data_type parens_value_list(?)
	313	{
	314	$return = {
	315	type => $item[1],
	316	size => $item[2][0] \|\| '',
	317	}
	318	}
	319
	320	column_constraint : constraint_name(?) column_constraint_type
17cae8ab	321	{
	322	my $desc = $item{'column_constraint_type'};
	323	my $type = $desc->{'type'};
	324	my $fields = $desc->{'fields'} \|\| [];
	325	my $expression = $desc->{'expression'} \|\| '';
	326
	327	$return = {
947dfd86	328	supertype => 'constraint',
947dfd86	329	name => $item{'constraint_name(?)'}[0] \|\| '',
17cae8ab	330	type => $type,
17cae8ab	331	expression => $type eq 'check' ? $expression : '',
40c5e2f4	332	deferrable => $item{'deferrable'},
17cae8ab	333	deferred => $item{'deferred'},
	334	reference_table => $desc->{'reference_table'},
	335	reference_fields => $desc->{'reference_fields'},
	336	# match_type => $desc->{'match_type'},
	337	# on_update_do => $desc->{'on_update_do'},
	338	}
	339	}
	340
	341	constraint_name : /constraint/i NAME { $item[2] }
	342
	343	column_constraint_type : /not null/i { $return = { type => 'not_null' } }
947dfd86	344	\| /null/
17cae8ab	345	{ $return = { type => 'null' } }
947dfd86	346	\| /unique/
17cae8ab	347	{ $return = { type => 'unique' } }
947dfd86	348	\| /primary key/i
17cae8ab	349	{ $return = { type => 'primary_key' } }
947dfd86	350	\| /check/i '(' /[^)]+/ ')'
17cae8ab	351	{ $return = { type => 'check', expression => $item[2] } }
947dfd86	352	\| /references/i table_name parens_word_list(?) on_delete_do(?)
17cae8ab	353	{
	354	$return = {
	355	type => 'foreign_key',
	356	reference_table => $item[2],
	357	reference_fields => $item[3][0],
	358	# match_type => $item[4][0],
	359	on_delete_do => $item[5][0],
	360	}
	361	}
	362
	363	#constraint_state : deferrable { $return = { type => $item[1] } }
	364	# \| deferred { $return = { type => $item[1] } }
	365	# \| /(no)?rely/ { $return = { type => $item[1] } }
	366	# \| /using/i /index/i using_index_clause
	367	# { $return = { type => 'using_index', index => $item[3] }
	368	# \| (dis)?enable { $return = { type => $item[1] } }
	369	# \| (no)?validate { $return = { type => $item[1] } }
	370	# \| /exceptions/i /into/i table_name
	371	# { $return = { type => 'exceptions_into', table => $item[3] } }
	372
	373	deferrable : /not/i /deferrable/i
	374	{ $return = 'not_deferrable' }
	375	\| /deferrable/i
	376	{ $return = 'deferrable' }
	377
	378	deferred : /initially/i /(deferred\|immediate)/i { $item[2] }
	379
	380	ora_data_type :
947dfd86	381	/(n?varchar2\|varchar)/i { $return = 'varchar2' }
17cae8ab	382	\|
	383	/n?char/i { $return = 'character' }
	384	\|
00e41431	385	/n?dec/i { $return = 'decimal' }
00e41431	386	\|
17cae8ab	387	/number/i { $return = 'number' }
17cae8ab	388	\|
87053733	389	/integer/i { $return = 'integer' }
87053733	390	\|
17cae8ab	391	/(pls_integer\|binary_integer)/i { $return = 'integer' }
	392	\|
	393	/interval\s+day/i { $return = 'interval_day' }
	394	\|
	395	/interval\s+year/i { $return = 'interval_year' }
	396	\|
	397	/long\s+raw/i { $return = 'long_raw' }
	398	\|
	399	/(long\|date\|timestamp\|raw\|rowid\|urowid\|mlslabel\|clob\|nclob\|blob\|bfile)/i { $item[1] }
	400
	401	parens_value_list : '(' VALUE(s /,/) ')'
	402	{ $item[2] }
	403
	404	parens_word_list : '(' WORD(s /,/) ')'
	405	{ $item[2] }
	406
	407	field_meta : default_val
947dfd86	408	\| column_constraint
17cae8ab	409
	410	default_val : /default/i /(?:')?[\w\d.-]*(?:')?/
	411	{
b85a95ec	412	my $val = $item[2];
b85a95ec	413	$val =~ s/'//g if defined $val;
17cae8ab	414	$return = {
947dfd86	415	supertype => 'constraint',
947dfd86	416	type => 'default',
17cae8ab	417	value => $val,
	418	}
	419	}
	420
	421	create_table : /create/i global_temporary(?) /table/i
	422
7c4cf567	423	table_option : /organization/i WORD
	424	{
	425	$return = { 'ORGANIZATION' => $item[2] }
	426	}
	427
	428	table_option : /nomonitoring/i
	429	{
	430	$return = { 'NOMONITORING' => undef }
	431	}
	432
	433	table_option : /parallel/i '(' key_value(s) ')'
	434	{
	435	$return = { 'PARALLEL' => $item[3] }
	436	}
	437
	438	key_value : WORD VALUE
	439	{
	440	$return = { $item[1], $item[2] }
	441	}
	442
17cae8ab	443	table_option : /[^;]+/
	444
	445	table_constraint : comment(s?) constraint_name(?) table_constraint_type deferrable(?) deferred(?) comment(s?)
	446	{
	447	my $desc = $item{'table_constraint_type'};
	448	my $type = $desc->{'type'};
	449	my $fields = $desc->{'fields'};
	450	my $expression = $desc->{'expression'};
	451	my @comments = ( @{ $item[1] }, @{ $item[-1] } );
	452
	453	$return = {
947dfd86	454	name => $item{'constraint_name(?)'}[0] \|\| '',
17cae8ab	455	type => 'constraint',
	456	constraint_type => $type,
	457	fields => $type ne 'check' ? $fields : [],
	458	expression => $type eq 'check' ? $expression : '',
40c5e2f4	459	deferrable => $item{'deferrable(?)'},
947dfd86	460	deferred => $item{'deferred(?)'},
17cae8ab	461	reference_table => $desc->{'reference_table'},
	462	reference_fields => $desc->{'reference_fields'},
	463	# match_type => $desc->{'match_type'}[0],
	464	on_delete_do => $desc->{'on_delete_do'},
	465	on_update_do => $desc->{'on_update_do'},
	466	comments => [ @comments ],
	467	}
	468	}
	469
	470	table_constraint_type : /primary key/i '(' NAME(s /,/) ')'
	471	{
	472	$return = {
	473	type => 'primary_key',
	474	fields => $item[3],
	475	}
	476	}
	477	\|
	478	/unique/i '(' NAME(s /,/) ')'
	479	{
	480	$return = {
	481	type => 'unique',
	482	fields => $item[3],
	483	}
	484	}
	485	\|
	486	/check/ '(' /(.+)/ ')'
	487	{
	488	$return = {
	489	type => 'check',
	490	expression => $item[3],
	491	}
	492	}
	493	\|
	494	/foreign key/i '(' NAME(s /,/) ')' /references/i table_name parens_word_list(?) on_delete_do(?)
	495	{
	496	$return = {
	497	type => 'foreign_key',
	498	fields => $item[3],
	499	reference_table => $item[6],
	500	reference_fields => $item[7][0],
	501	match_type => $item[8][0],
	502	on_delete_do => $item[9][0],
	503	on_update_do => $item[10][0],
	504	}
	505	}
	506
	507	on_delete_do : /on delete/i WORD(s)
	508	{ $item[2] }
	509
	510	WORD : /\w+/
	511
	512	NAME : /\w+/ { $item[1] }
	513
067e3cf4	514	TABLE : /table/i
067e3cf4	515
17cae8ab	516	VALUE : /[-+]?\.?\d+(?:[eE]\d+)?/
	517	{ $item[1] }
	518	\| /'.*?'/ # XXX doesn't handle embedded quotes
	519	{ $item[1] }
	520	\| /NULL/
	521	{ 'NULL' }
	522
	523	!;
	524
	525	# -------------------------------------------------------------------
	526	sub parse {
	527	my ( $translator, $data ) = @_;
	528	$parser \|\|= Parse::RecDescent->new($GRAMMAR);
	529
	530	local $::RD_TRACE = $translator->trace ? 1 : undef;
	531	local $DEBUG = $translator->debug;
	532
	533	unless (defined $parser) {
	534	return $translator->error("Error instantiating Parse::RecDescent ".
	535	"instance: Bad grammer");
	536	}
	537
87053733	538	my $result = $parser->startrule( $data );
17cae8ab	539	die "Parse failed.\n" unless defined $result;
17cae8ab	540	warn Dumper($result) if $DEBUG;
947dfd86	541
87053733	542	my $schema = $translator->schema;
	543	my $indices = $result->{'indices'};
	544	my @tables = sort {
	545	$result->{'tables'}{ $a }{'order'}
	546	<=>
	547	$result->{'tables'}{ $b }{'order'}
	548	} keys %{ $result->{'tables'} };
947dfd86	549
947dfd86	550	for my $table_name ( @tables ) {
87053733	551	my $tdata = $result->{'tables'}{ $table_name };
87053733	552	next unless $tdata->{'table_name'};
947dfd86	553	my $table = $schema->add_table(
947dfd86	554	name => $tdata->{'table_name'},
44567b47	555	comments => $tdata->{'comments'},
947dfd86	556	) or die $schema->error;
947dfd86	557
7c4cf567	558	$table->options( $tdata->{'table_options'} );
7c4cf567	559
947dfd86	560	my @fields = sort {
	561	$tdata->{'fields'}->{$a}->{'order'}
	562	<=>
	563	$tdata->{'fields'}->{$b}->{'order'}
	564	} keys %{ $tdata->{'fields'} };
	565
	566	for my $fname ( @fields ) {
	567	my $fdata = $tdata->{'fields'}{ $fname };
	568	my $field = $table->add_field(
	569	name => $fdata->{'name'},
	570	data_type => $fdata->{'data_type'},
	571	size => $fdata->{'size'},
	572	default_value => $fdata->{'default'},
	573	is_auto_increment => $fdata->{'is_auto_inc'},
	574	is_nullable => $fdata->{'null'},
44567b47	575	comments => $fdata->{'comments'},
947dfd86	576	) or die $table->error;
	577
	578	for my $cdata ( @{ $fdata->{'constraints'} } ) {
	579	next unless $cdata->{'type'} eq 'foreign_key';
	580	$cdata->{'fields'} \|\|= [ $field->name ];
	581	push @{ $tdata->{'constraints'} }, $cdata;
	582	}
	583	}
	584
87053733	585	push @{ $tdata->{'indices'} }, @{ $indices->{ $table_name } \|\| [] };
87053733	586
947dfd86	587	for my $idata ( @{ $tdata->{'indices'} \|\| [] } ) {
	588	my $index = $table->add_index(
	589	name => $idata->{'name'},
	590	type => uc $idata->{'type'},
	591	fields => $idata->{'fields'},
	592	) or die $table->error;
	593	}
	594
	595	for my $cdata ( @{ $tdata->{'constraints'} \|\| [] } ) {
	596	my $constraint = $table->add_constraint(
	597	name => $cdata->{'name'},
	598	type => $cdata->{'type'},
	599	fields => $cdata->{'fields'},
	600	reference_table => $cdata->{'reference_table'},
	601	reference_fields => $cdata->{'reference_fields'},
	602	match_type => $cdata->{'match_type'} \|\| '',
	603	on_delete => $cdata->{'on_delete_do'},
	604	on_update => $cdata->{'on_update_do'},
	605	) or die $table->error;
	606	}
	607	}
	608
f62bd16c	609	return 1;
17cae8ab	610	}
	611
	612	1;
	613
947dfd86	614	# -------------------------------------------------------------------
	615	# Something there is that doesn't love a wall.
	616	# Robert Frost
	617	# -------------------------------------------------------------------
	618
17cae8ab	619	=pod
	620
	621	=head1 AUTHOR
	622
	623	Ken Y. Clark E<lt>kclark@cpan.orgE<gt>.
	624
	625	=head1 SEE ALSO
	626
3b2be65a	627	SQL::Translator, Parse::RecDescent, DDL::Oracle.
17cae8ab	628
17cae8ab	629	=cut