--- /dev/null
+package Ora2Pg;
+#------------------------------------------------------------------------------
+# Project : Oracle to PostgreSQL database schema converter
+# Name : Ora2Pg.pm
+# Language : 5.006 built for i686-linux
+# OS : linux RedHat 6.2 kernel 2.2.14-5
+# Authors : Gilles Darold, gilles@darold.net
+# Copyright: Copyright (c) 2000 : Gilles Darold - All rights reserved -
+# Function : Main module used to export Oracle database schema to PostgreSQL
+# Usage : See documentation in this file with perldoc.
+#------------------------------------------------------------------------------
+# This program is free software; you can redistribute it and/or modify it under
+# the same terms as Perl itself.
+#------------------------------------------------------------------------------
+
+use strict;
+use vars qw($VERSION);
+use Carp qw(confess);
+use DBI;
+
+$VERSION = "1.1";
+
+
+=head1 NAME
+
+Ora2Pg - Oracle to PostgreSQL database schema converter
+
+
+=head1 SYNOPSIS
+
+ BEGIN {
+ $ENV{ORACLE_HOME} = '/usr/local/oracle/oracle816';
+ }
+
+ use strict;
+
+ use Ora2Pg;
+
+ # Init the database connection
+ my $dbsrc = 'dbi:Oracle:host=testdb.samse.fr;sid=TEST;port=1521';
+ my $dbuser = 'system';
+ my $dbpwd = 'manager';
+
+ # Create an instance of the Ora2Pg perl module
+ my $schema = new Ora2Pg (
+ datasource => $dbsrc, # Database DBD datasource
+ user => $dbuser, # Database user
+ password => $dbpwd, # Database password
+ );
+
+ # Create the POSTGRESQL representation of all objects in the database
+ $schema->export_schema("output.sql");
+
+ exit(0);
+
+
+=head1 DESCRIPTION
+
+Ora2Pg is a perl OO module used to export an Oracle database schema
+to a PostgreSQL compatible schema.
+
+It simply connect to your Oracle database, extract its structure and
+generate a SQL script that you can load into your PostgreSQL database.
+
+I'm not a Oracle DBA so I don't really know something about its internal
+structure so you may find some incorrect things. Please tell me what is
+wrong and what can be better.
+
+It currently only dump the database schema, with primary, unique and
+foreign keys. I've tried to excluded internal system tables but perhaps
+not enougt, please let me know.
+
+
+=head1 ABSTRACT
+
+The goal of the Ora2Pg perl module is to cover all part needed to export
+an Oracle database to a PostgreSQL database without other thing that provide
+the connection parameters to the Oracle database.
+
+Features must include:
+
+ - database schema export (done)
+ - grant export (done)
+ - predefined function/trigger export (todo)
+ - data export (todo)
+ - sql query converter (todo)
+
+My knowledge regarding database is really poor especially for Oracle
+so contribution is welcome.
+
+
+=head1 REQUIREMENT
+
+You just need the DBI and DBD::Oracle perl module to be installed
+
+
+=head1 PUBLIC METHODS
+
+=head2 new HASH_OPTIONS
+
+Creates a new Ora2Pg object.
+
+Supported options are:
+
+ - datasource : DBD datasource (required)
+ - user : DBD user (optional with public access)
+ - password : DBD password (optional with public access)
+
+Attempt that this list should grow a little more because all initialization is
+done by this way.
+
+=cut
+
+sub new
+{
+ my ($class, %options) = @_;
+
+ # This create an OO perl object
+ my $self = {};
+ bless ($self, $class);
+
+ # Initialize this object
+ $self->_init(%options);
+
+ # Return the instance
+ return($self);
+}
+
+
+=head2 export_sql FILENAME
+
+Print SQL conversion output to a filename or
+to STDOUT if no file is given.
+
+=cut
+
+sub export_schema
+{
+ my ($self, $outfile) = @_;
+
+ if ($outfile) {
+ # Send output to the given file
+ open(FILE,">$outfile") or die "Can't open $outfile: $!";
+ print FILE $self->_get_sql_data();
+ close FILE;
+ return;
+ }
+ # Return data as string
+ return $self->_get_sql_data();
+
+}
+
+
+#### Private subroutines
+
+=head1 PUBLIC METHODS
+
+=head2 _init HASH_OPTIONS
+
+Initialize a Ora2Pg object instance with a connexion to the
+Oracle database.
+
+=cut
+
+sub _init
+{
+ my ($self, %options) = @_;
+
+ # Connect the database
+ $self->{dbh} = DBI->connect($options{datasource}, $options{user}, $options{password});
+
+ # Check for connection failure
+ if (!$self->{dbh}) {
+ die "Error : $DBI::err ... $DBI::errstr\n";
+ }
+
+ # Retreive all table informations
+ $self->_tables();
+
+ # Disconnect from the database
+ $self->{dbh}->disconnect() if ($self->{dbh});
+
+}
+
+
+# We provide a DESTROY method so that the autoloader doesn't
+# bother trying to find it. We also close the DB connexion
+sub DESTROY { }
+
+
+=head2 _tables
+
+This function is used to retrieve all table information.
+
+Set the main hash of the database structure $self->{tables}.
+Keys are the names of all tables retrieved from the current
+database. Each table information compose an array associated
+to the table_info key as array reference. In other way:
+
+ $self->{tables}{$class_name}{table_info} = [(OWNER,TYPE)];
+
+TYPE Can be TABLE, VIEW, SYSTEM TABLE, GLOBAL TEMPORARY, LOCAL TEMPORARY,
+ALIAS, SYNONYM or a data source specific type identifier.
+
+It also get the following informations in the DBI object to affect the
+main hash of the database structure :
+
+ $self->{tables}{$class_name}{field_name} = $sth->{NAME};
+ $self->{tables}{$class_name}{field_type} = $sth->{TYPE};
+
+It also call these other private subroutine to affect the main hash
+of the database structure :
+
+ @{$self->{tables}{$class_name}{column_info}} = &_column_info($self, $class_name);
+ @{$self->{tables}{$class_name}{primary_key}} = &_primary_key($self, $class_name);
+ @{$self->{tables}{$class_name}{unique_key}} = &_unique_key($self, $class_name);
+ @{$self->{tables}{$class_name}{foreign_key}} = &_foreign_key($self, $class_name);
+
+=cut
+
+sub _tables
+{
+ my ($self) = @_;
+
+ # Get all tables information given by the DBI method table_info
+ my $sth = $self->{dbh}->table_info or die $self->{dbh}->errstr;
+ my @tables_infos = $sth->fetchall_arrayref();
+
+ foreach my $table (@tables_infos) {
+ # Set the table information for each class found
+ foreach my $t (@$table) {
+ # usually OWNER,TYPE. QUALIFIER is omitted until
+ # I know what to do with that
+ $self->{tables}{${@$t}[2]}{table_info} = [(${@$t}[1],${@$t}[3])];
+ # Set the fields information
+ my $sth = $self->{dbh}->prepare("SELECT * FROM ${@$t}[1].${@$t}[2] WHERE 1=0");
+ if (!defined($sth)) {
+ $sth = $self->{dbh}->prepare("SELECT * FROM ${@$t}[1].${@$t}[2] WHERE 1=0");
+ if (!defined($sth)) {
+ warn "Can't prepare statement: $DBI::errstr";
+ next;
+ }
+ }
+ $sth->execute;
+ if ($sth->err) {
+ warn "Can't execute statement: $DBI::errstr";
+ next;
+ }
+ $self->{tables}{${@$t}[2]}{field_name} = $sth->{NAME};
+ $self->{tables}{${@$t}[2]}{field_type} = $sth->{TYPE};
+
+ @{$self->{tables}{${@$t}[2]}{column_info}} = &_column_info($self, ${@$t}[2]);
+ @{$self->{tables}{${@$t}[2]}{primary_key}} = &_primary_key($self, ${@$t}[2]);
+ @{$self->{tables}{${@$t}[2]}{unique_key}} = &_unique_key($self, ${@$t}[2]);
+ @{$self->{tables}{${@$t}[2]}{foreign_key}} = &_foreign_key($self, ${@$t}[2]);
+ }
+ }
+
+ ($self->{groups}, $self->{grants}) = &_get_privilege($self);
+
+}
+
+
+=head2 _get_sql_data
+
+Returns a string containing the entire SQL Schema definition compatible with PostgreSQL
+
+=cut
+
+sub _get_sql_data
+{
+ my ($self) = @_;
+
+ my $sql_output = "-- Generated by Ora2Pg, the Oracle database Schema converter, version $VERSION\n";
+ $sql_output .= "-- Copyright 2000 Gilles DAROLD. All rights reserved.\n";
+ $sql_output .= "-- Author : <gilles\@darold.net>\n\n";
+
+ # Dump the database structure as an XML Schema defintion
+ foreach my $table (keys %{$self->{tables}}) {
+ # Can be: TABLE, VIEW, SYSTEM TABLE, GLOBAL TEMPORARY,
+ $sql_output .= "CREATE ${$self->{tables}{$table}{table_info}}[1] \"\L$table\E\" (\n";
+ my $sql_ukey = "";
+ my $sql_pkey = "";
+ foreach my $i ( 0 .. $#{$self->{tables}{$table}{field_name}} ) {
+ foreach my $f (@{$self->{tables}{$table}{column_info}}) {
+ next if (${$f}[0] ne "${$self->{tables}{$table}{field_name}}[$i]");
+ my $type = $self->_sql_type(${$f}[1], ${$f}[2]);
+ $type = "${$f}[1], ${$f}[2]" if (!$type);
+ $sql_output .= "\t${$f}[0] $type";
+ # Set the primary key definition
+ foreach my $k (@{$self->{tables}{$table}{primary_key}}) {
+ next if ($k ne "${$f}[0]");
+ $sql_pkey .= "$k,";
+ last;
+ }
+ if (${$f}[4] ne "") {
+ $sql_output .= " DEFAULT ${$f}[4]";
+ } elsif (!${$f}[3]) {
+ $sql_output .= " NOT NULL";
+ }
+ # Set the unique key definition
+ foreach my $k (@{$self->{tables}{$table}{unique_key}}) {
+ next if ( ($k ne "${$f}[0]") || (grep(/^$k$/, @{$self->{tables}{$table}{primary_key}})) );
+ $sql_ukey .= "$k,";
+ last;
+ }
+ $sql_output .= ",\n";
+ last;
+ }
+ }
+ $sql_ukey =~ s/,$//;
+ $sql_pkey =~ s/,$//;
+ $sql_output .= "\tCONSTRAINT uk\L$table\E UNIQUE ($sql_ukey),\n" if ($sql_ukey);
+ $sql_output .= "\tCONSTRAINT pk\L$table\E PRIMARY KEY ($sql_pkey),\n" if ($sql_pkey);
+
+ # Add constraint definition
+ foreach my $h (@{$self->{tables}{$table}{foreign_key}}) {
+ foreach my $link (keys %{$h}) {
+ my ($reftable,$desttable) = split(/->/, $link);
+ next if ($reftable ne $table);
+ my $localcols = '';
+ foreach my $i (0 .. $#{${$h}{$link}{local}}) {
+ my $destname = "$desttable";
+ my $remote = "${${$h}{$link}{remote}}[$i]";
+ my $local = "${${$h}{$link}{local}}[$i]";
+ $sql_output .= "\tCONSTRAINT fk${i}_\L$table\E FOREIGN KEY ($local) REFERENCES $desttable ($remote),\n";
+ }
+ }
+ }
+ $sql_output =~ s/,$//;
+ $sql_output .= ");\n";
+ $sql_output .= "\n";
+ }
+
+ # Add privilege definition
+ foreach my $role (keys %{$self->{groups}}) {
+ $sql_output .= "CREATE GROUP $role;\n";
+ $sql_output .= "ALTER GROUP $role ADD USERS " . join(',', @{$self->{groups}{$role}}) . ";\n";
+ foreach my $grant (keys %{$self->{grants}{$role}}) {
+ $sql_output .= "GRANT $grant ON " . join(',', @{$self->{grants}{$role}{$grant}}) . " TO GROUP $role;\n";
+ }
+ }
+
+ return $sql_output;
+}
+
+
+=head2 _sql_type INTERNAL_TYPE LENGTH
+
+This function return the PostgreSQL datatype corresponding to the
+Oracle internal type.
+
+=cut
+
+sub _sql_type
+{
+ my ($self, $type, $len) = @_;
+
+ my %TYPE = (
+ 'NUMBER' => 'double',
+ 'LONG' => 'integer',
+ 'CHAR' => 'char',
+ 'VARCHAR2' => 'varchar',
+ 'DATE' => 'datetime',
+ 'RAW' => 'binary',
+ 'ROWID' => 'oid',
+ 'LONG RAW' => 'binary',
+ );
+
+ # Overide the length
+ $len = '' if ($type eq 'NUMBER');
+
+ if (exists $TYPE{$type}) {
+ if ($len) {
+ if (($type eq "NUMBER") || ($type eq "LONG")) {
+ return "$TYPE{$type}($len)";
+ } elsif (($type eq "CHAR") || ($type =~ /VARCHAR/)) {
+ return "$TYPE{$type}($len)";
+ } else {
+ return "$TYPE{$type}($len)";
+ }
+ } else {
+ return $TYPE{$type};
+ }
+ }
+
+ return;
+}
+
+
+=head2 _column_info TABLE
+
+This function implements a Oracle-native column information.
+
+Return a list of array reference containing the following informations
+for each column the given a table
+
+[(
+ column name,
+ column type,
+ column length,
+ nullable column,
+ default value
+)]
+
+=cut
+
+sub _column_info
+{
+ my ($self, $table) = @_;
+
+ my $sth = $self->{dbh}->prepare(<<END) or die $self->{dbh}->errstr;
+SELECT COLUMN_NAME, DATA_TYPE, DATA_LENGTH, NULLABLE, DATA_DEFAULT
+FROM DBA_TAB_COLUMNS
+WHERE TABLE_NAME='$table'
+END
+ $sth->execute or die $sth->errstr;
+ my $data = $sth->fetchall_arrayref();
+
+ return @$data;
+
+}
+
+
+=head2 _primary_key TABLE
+
+This function implements a Oracle-native primary key column
+information.
+
+Return a list of all column name defined as primary key
+for the given table.
+
+=cut
+
+sub _primary_key
+{
+ my($self, $table) = @_;
+
+ my $sth = $self->{dbh}->prepare(<<END) or die $self->{dbh}->errstr;
+select all_cons_columns.COLUMN_NAME
+from all_constraints, all_cons_columns
+where all_constraints.CONSTRAINT_TYPE='P'
+and all_constraints.constraint_name=all_cons_columns.constraint_name
+and all_constraints.STATUS='ENABLED'
+and all_constraints.TABLE_NAME='$table'
+order by all_cons_columns.position
+END
+ $sth->execute or die $sth->errstr;
+ my @data = ();
+ while (my $row = $sth->fetch) {
+ push(@data, ${@$row}[0]) if (${@$row}[0] !~ /\$/);
+ }
+ return @data;
+}
+
+
+=head2 _unique_key TABLE
+
+This function implements a Oracle-native unique key column
+information.
+
+Return a list of all column name defined as unique key
+for the given table.
+
+=cut
+
+sub _unique_key
+{
+ my($self, $table) = @_;
+
+ my $sth = $self->{dbh}->prepare(<<END) or die $self->{dbh}->errstr;
+select all_cons_columns.COLUMN_NAME
+from all_constraints, all_cons_columns
+where all_constraints.CONSTRAINT_TYPE='U'
+and all_constraints.constraint_name=all_cons_columns.constraint_name
+and all_constraints.STATUS='ENABLED'
+and all_constraints.TABLE_NAME='$table'
+order by all_cons_columns.position
+END
+ $sth->execute or die $sth->errstr;
+
+ my @data = ();
+ while (my $row = $sth->fetch) {
+ push(@data, ${@$row}[0]) if (${@$row}[0] !~ /\$/);
+ }
+ return @data;
+}
+
+
+=head2 _foreign_key TABLE
+
+This function implements a Oracle-native foreign key reference
+information.
+
+Return a list of hash of hash of array reference. Ouuf! Nothing very difficult.
+The first hash is composed of all foreign key name. The second hash just have
+two key known as 'local' and remote' corresponding to the local table where the
+foreign key is defined and the remote table where the key refer.
+
+The foreign key name is composed as follow:
+
+ 'local_table_name->remote_table_name'
+
+Foreign key data consist in two array representing at the same indice the local
+field and the remote field where the first one refer to the second.
+Just like this:
+
+ @{$link{$fkey_name}{local}} = @local_columns;
+ @{$link{$fkey_name}{remote}} = @remote_columns;
+
+=cut
+
+sub _foreign_key
+{
+ my ($self, $table) = @_;
+
+ my $sth = $self->{dbh}->prepare(<<END) or die $self->{dbh}->errstr;
+select cls.TABLE_NAME, clf.TABLE_NAME, cls.COLUMN_NAME, clf.COLUMN_NAME
+from all_constraints cns, all_cons_columns clf , all_cons_columns cls
+where cns.CONSTRAINT_TYPE='R'
+and cns.constraint_name=cls.constraint_name
+and clf.CONSTRAINT_NAME = cns.R_CONSTRAINT_NAME
+and clf.OWNER = cns.OWNER
+and clf.POSITION = clf.POSITION
+and cns.STATUS='ENABLED'
+and cns.TABLE_NAME='EVT_DEST_PROFILE'
+order by cns.CONSTRAINT_NAME, cls.position
+END
+ $sth->execute or die $sth->errstr;
+
+ my @data = ();
+ my %link = ();
+ while (my $row = $sth->fetch) {
+ my @trig_info = split(/\\000/, ${@$row}[0]);
+ # The first field is the name of the constraint, we
+ # remove it because we use a table to table notation.
+ my $trig_name = ${@$row}[0] . "->" . ${@$row}[1];
+ push(@{$link{$trig_name}{local}}, ${@$row}[2]);
+ push(@{$link{$trig_name}{remote}}, ${@$row}[3]);
+ }
+ push(@data, \%link);
+
+ return @data;
+}
+
+
+=head2 _get_privilege
+
+This function implements a Oracle-native tables grants
+information.
+
+Return a hash of all groups (roles) with associated users
+and a hash of arrays of all grants on related tables.
+
+=cut
+
+sub _get_privilege
+{
+ my($self) = @_;
+
+ # Retrieve all ROLES defined in this database
+ my $sth = $self->{dbh}->prepare(<<END) or die $self->{dbh}->errstr;
+SELECT
+ ROLE
+FROM DBA_ROLES
+ ORDER BY ROLE
+END
+ $sth->execute or die $sth->errstr;
+ my @roles = ();
+ while (my $row = $sth->fetch) {
+ push(@roles, $row->[0]);
+ }
+
+ # Get all users associated to these roles
+ my %data = ();
+ my %groups = ();
+ foreach my $r (@roles) {
+ my $str = "SELECT GRANTEE FROM DBA_ROLE_PRIVS WHERE GRANTED_ROLE='$r' AND GRANTEE IN (SELECT USERNAME FROM DBA_USERS)";
+ $sth = $self->{dbh}->prepare($str) or die $self->{dbh}->errstr;
+ $sth->execute or die $sth->errstr;
+ my @users = ();
+ while (my $row = $sth->fetch) {
+ next if ($row->[0] eq 'SYSTEM');
+ push(@users, $row->[0]);
+ }
+ # Don't process roles relatives to DBA
+ next if (grep(/^DBSNMP$/, @users));
+ next if (grep(/^SYS$/, @users));
+
+ $groups{$r} = \@users;
+
+ $str = "SELECT PRIVILEGE,TABLE_NAME FROM DBA_TAB_PRIVS WHERE GRANTEE='$r'";
+ $sth = $self->{dbh}->prepare($str) or die $self->{dbh}->errstr;
+ $sth->execute or die $sth->errstr;
+ my @grants = ();
+ while (my $row = $sth->fetch) {
+ push(@{$data{$r}{"${@$row}[0]"}}, ${@$row}[1]);
+ }
+ }
+
+ return \%groups, \%data;
+}
+
+1;
+
+__END__
+
+
+=head1 AUTHOR
+
+Gilles Darold <gilles@darold.net>
+
+=head1 COPYRIGHT
+
+Copyright (c) 2001 Gilles Darold - All rights reserved.
+
+This program is free software; you can redistribute it and/or modify it under
+the same terms as Perl itself.
+
+
+=head1 BUGS
+
+This perl module is in the same state as my knowledge regarding database,
+it can move and not be compatible with older version so I will do my best
+to give you official support for Ora2Pg. Your volontee to help construct
+it and your contribution are welcome.
+
+=head1 SEE ALSO
+
+L<DBI>, L<DBD::Oracle>
+
+=cut
+
+
--- /dev/null
+ Ora2Pg - Oracle to PostgreSQL database schema converter
+
+ _________________________________________________________________
+
+ SYNOPSIS
+
+ BEGIN {
+ $ENV{ORACLE_HOME} = '/usr/local/oracle/oracle816';
+ }
+
+ use strict;
+
+ use Ora2Pg;
+
+ # Init the database connection
+ my $dbsrc = 'dbi:Oracle:host=testdb.samse.fr;sid=TEST;port=1521';
+ my $dbuser = 'system';
+ my $dbpwd = 'manager';
+
+ # Create an instance of the Ora2Pg perl module
+ my $schema = new Ora2Pg (
+ datasource => $dbsrc, # Database DBD datasource
+ user => $dbuser, # Database user
+ password => $dbpwd, # Database password
+ );
+
+ # Create the POSTGRESQL representation of all objects in the database
+ $schema->export_schema("output.sql");
+
+ exit(0);
+ _________________________________________________________________
+
+ DESCRIPTION
+
+ Ora2Pg is a perl OO module used to export an Oracle database schema to
+ a PostgreSQL compatible schema.
+
+ It simply connect to your Oracle database, extract its structure and
+ generate a SQL script that you can load into your PostgreSQL database.
+
+ I'm not a Oracle DBA so I don't really know something about its
+ internal structure so you may find some incorrect things. Please tell
+ me what is wrong and what can be better.
+
+ It currently only dump the database schema, with primary, unique and
+ foreign keys. I've tried to excluded internal system tables but
+ perhaps not enougt, please let me know.
+ _________________________________________________________________
+
+ ABSTRACT
+
+ The goal of the Ora2Pg perl module is to cover all part needed to
+ export an Oracle database to a PostgreSQL database without other thing
+ that provide the connection parameters to the Oracle database.
+
+ Features must include:
+
+ - database schema export (done)
+ - grant export (done)
+ - predefined function/trigger export (todo)
+ - data export (todo)
+ - sql query converter (todo)
+
+ My knowledge regarding database is really poor especially for Oracle
+ so contribution is welcome.
+ _________________________________________________________________
+
+ REQUIREMENT
+
+ You just need the DBI and DBD::Oracle perl module to be installed
+ _________________________________________________________________
+
+ PUBLIC METHODS
+ _________________________________________________________________
+
+new HASH_OPTIONS
+
+ Creates a new Ora2Pg object.
+
+ Supported options are:
+
+ - datasource : DBD datasource (required)
+ - user : DBD user (optional with public access)
+ - password : DBD password (optional with public access)
+
+ Attempt that this list should grow a little more because all
+ initialization is done by this way.
+ _________________________________________________________________
+
+export_sql FILENAME
+
+ Print SQL conversion output to a filename or to STDOUT if no file is
+ given.
+ _________________________________________________________________
+
+ PUBLIC METHODS
+ _________________________________________________________________
+
+_init HASH_OPTIONS
+
+ Initialize a Ora2Pg object instance with a connexion to the Oracle
+ database.
+ _________________________________________________________________
+
+_tables
+
+ This function is used to retrieve all table information.
+
+ Set the main hash of the database structure $self->{tables}. Keys are
+ the names of all tables retrieved from the current database. Each
+ table information compose an array associated to the table_info key as
+ array reference. In other way:
+
+ $self->{tables}{$class_name}{table_info} = [(OWNER,TYPE)];
+
+ TYPE Can be TABLE, VIEW, SYSTEM TABLE, GLOBAL TEMPORARY, LOCAL
+ TEMPORARY, ALIAS, SYNONYM or a data source specific type identifier.
+
+ It also get the following informations in the DBI object to affect the
+ main hash of the database structure :
+
+ $self->{tables}{$class_name}{field_name} = $sth->{NAME};
+ $self->{tables}{$class_name}{field_type} = $sth->{TYPE};
+
+ It also call these other private subroutine to affect the main hash of
+ the database structure :
+
+ @{$self->{tables}{$class_name}{column_info}} = &_column_info($self, $class_
+name);
+ @{$self->{tables}{$class_name}{primary_key}} = &_primary_key($self, $class_
+name);
+ @{$self->{tables}{$class_name}{unique_key}} = &_unique_key($self, $class_n
+ame);
+ @{$self->{tables}{$class_name}{foreign_key}} = &_foreign_key($self, $class_
+name);
+ _________________________________________________________________
+
+_get_sql_data
+
+ Returns a string containing the entire SQL Schema definition
+ compatible with PostgreSQL
+ _________________________________________________________________
+
+_sql_type INTERNAL_TYPE LENGTH
+
+ This function return the PostgreSQL datatype corresponding to the
+ Oracle internal type.
+ _________________________________________________________________
+
+_column_info TABLE
+
+ This function implements a Oracle-native column information.
+
+ Return a list of array reference containing the following informations
+ for each column the given a table
+
+ [( column name, column type, column length, nullable column, default
+ value )]
+ _________________________________________________________________
+
+_primary_key TABLE
+
+ This function implements a Oracle-native primary key column
+ information.
+
+ Return a list of all column name defined as primary key for the given
+ table.
+ _________________________________________________________________
+
+_unique_key TABLE
+
+ This function implements a Oracle-native unique key column
+ information.
+
+ Return a list of all column name defined as unique key for the given
+ table.
+ _________________________________________________________________
+
+_foreign_key TABLE
+
+ This function implements a Oracle-native foreign key reference
+ information.
+
+ Return a list of hash of hash of array reference. Ouuf! Nothing very
+ difficult. The first hash is composed of all foreign key name. The
+ second hash just have two key known as 'local' and remote'
+ corresponding to the local table where the foreign key is defined and
+ the remote table where the key refer.
+
+ The foreign key name is composed as follow:
+
+ 'local_table_name->remote_table_name'
+
+ Foreign key data consist in two array representing at the same indice
+ the local field and the remote field where the first one refer to the
+ second. Just like this:
+
+ @{$link{$fkey_name}{local}} = @local_columns;
+ @{$link{$fkey_name}{remote}} = @remote_columns;
+ _________________________________________________________________
+
+_get_privilege
+
+ This function implements a Oracle-native tables grants information.
+
+ Return a hash of all groups (roles) with associated users and a hash
+ of arrays of all grants on related tables.
+ _________________________________________________________________
+
+ AUTHOR
+
+ Gilles Darold <gilles@darold.net>
+ _________________________________________________________________
+
+ COPYRIGHT
+
+ Copyright (c) 2001 Gilles Darold - All rights reserved.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the same terms as Perl itself.
+ _________________________________________________________________
+
+ BUGS
+
+ This perl module is in the same state as my knowledge regarding
+ database, it can move and not be compatible with older version so I
+ will do my best to give you official support for Ora2Pg. Your volontee
+ to help construct it and your contribution are welcome.
+ _________________________________________________________________
+
+ SEE ALSO
+
+ DBI, DBD::Oracle
--- /dev/null
+<HTML>
+<HEAD>
+<TITLE>Ora2Pg - Oracle to PostgreSQL database schema converter</TITLE>
+<LINK REV="made" HREF="mailto:root@porky.devel.redhat.com">
+</HEAD>
+
+<BODY>
+
+<!-- INDEX BEGIN -->
+
+<UL>
+
+ <LI><A HREF="#NAME">NAME</A>
+ <LI><A HREF="#SYNOPSIS">SYNOPSIS</A>
+ <LI><A HREF="#DESCRIPTION">DESCRIPTION</A>
+ <LI><A HREF="#ABSTRACT">ABSTRACT</A>
+ <LI><A HREF="#REQUIREMENT">REQUIREMENT</A>
+ <LI><A HREF="#PUBLIC_METHODS">PUBLIC METHODS</A>
+ <UL>
+
+ <LI><A HREF="#new_HASH_OPTIONS">new HASH_OPTIONS</A>
+ <LI><A HREF="#export_sql_FILENAME">export_sql FILENAME</A>
+ </UL>
+
+ <LI><A HREF="#PUBLIC_METHODS">PUBLIC METHODS</A>
+ <UL>
+
+ <LI><A HREF="#_init_HASH_OPTIONS">_init HASH_OPTIONS</A>
+ <LI><A HREF="#_tables">_tables</A>
+ <LI><A HREF="#_get_sql_data">_get_sql_data</A>
+ <LI><A HREF="#_sql_type_INTERNAL_TYPE_LENGTH">_sql_type INTERNAL_TYPE LENGTH</A>
+ <LI><A HREF="#_column_info_TABLE">_column_info TABLE</A>
+ <LI><A HREF="#_primary_key_TABLE">_primary_key TABLE</A>
+ <LI><A HREF="#_unique_key_TABLE">_unique_key TABLE</A>
+ <LI><A HREF="#_foreign_key_TABLE">_foreign_key TABLE</A>
+ <LI><A HREF="#_get_privilege">_get_privilege </A>
+ </UL>
+
+ <LI><A HREF="#AUTHOR">AUTHOR</A>
+ <LI><A HREF="#COPYRIGHT">COPYRIGHT</A>
+ <LI><A HREF="#BUGS">BUGS</A>
+ <LI><A HREF="#SEE_ALSO">SEE ALSO</A>
+</UL>
+<!-- INDEX END -->
+
+<HR>
+<P>
+<H1><A NAME="NAME">NAME</A></H1>
+<P>
+Ora2Pg - Oracle to PostgreSQL database schema converter
+
+<P>
+<HR>
+<H1><A NAME="SYNOPSIS">SYNOPSIS</A></H1>
+<P>
+<PRE> BEGIN {
+ $ENV{ORACLE_HOME} = '/usr/local/oracle/oracle816';
+ }
+</PRE>
+<P>
+<PRE> use strict;
+</PRE>
+<P>
+<PRE> use Ora2Pg;
+</PRE>
+<P>
+<PRE> # Init the database connection
+ my $dbsrc = 'dbi:Oracle:host=testdb.samse.fr;sid=TEST;port=1521';
+ my $dbuser = 'system';
+ my $dbpwd = 'manager';
+</PRE>
+<P>
+<PRE> # Create an instance of the Ora2Pg perl module
+ my $schema = new Ora2Pg (
+ datasource => $dbsrc, # Database DBD datasource
+ user => $dbuser, # Database user
+ password => $dbpwd, # Database password
+ );
+</PRE>
+<P>
+<PRE> # Create the POSTGRESQL representation of all objects in the database
+ $schema->export_schema("output.sql");
+</PRE>
+<P>
+<PRE> exit(0);
+</PRE>
+<P>
+<HR>
+<H1><A NAME="DESCRIPTION">DESCRIPTION</A></H1>
+<P>
+Ora2Pg is a perl OO module used to export an Oracle database schema to a
+PostgreSQL compatible schema.
+
+<P>
+It simply connect to your Oracle database, extract its structure and
+generate a SQL script that you can load into your PostgreSQL database.
+
+<P>
+I'm not a Oracle DBA so I don't really know something about its internal
+structure so you may find some incorrect things. Please tell me what is
+wrong and what can be better.
+
+<P>
+It currently only dump the database schema, with primary, unique and
+foreign keys. I've tried to excluded internal system tables but perhaps not
+enougt, please let me know.
+
+<P>
+<HR>
+<H1><A NAME="ABSTRACT">ABSTRACT</A></H1>
+<P>
+The goal of the Ora2Pg perl module is to cover all part needed to export an
+Oracle database to a PostgreSQL database without other thing that provide
+the connection parameters to the Oracle database.
+
+<P>
+Features must include:
+
+<P>
+<PRE> - database schema export (done)
+ - grant export (done)
+ - predefined function/trigger export (todo)
+ - data export (todo)
+ - sql query converter (todo)
+</PRE>
+<P>
+My knowledge regarding database is really poor especially for Oracle so
+contribution is welcome.
+
+<P>
+<HR>
+<H1><A NAME="REQUIREMENT">REQUIREMENT</A></H1>
+<P>
+You just need the DBI and DBD::Oracle perl module to be installed
+
+<P>
+<HR>
+<H1><A NAME="PUBLIC_METHODS">PUBLIC METHODS</A></H1>
+<P>
+<HR>
+<H2><A NAME="new_HASH_OPTIONS">new HASH_OPTIONS</A></H2>
+<P>
+Creates a new Ora2Pg object.
+
+<P>
+Supported options are:
+
+<P>
+<PRE> - datasource : DBD datasource (required)
+ - user : DBD user (optional with public access)
+ - password : DBD password (optional with public access)
+</PRE>
+<P>
+Attempt that this list should grow a little more because all initialization
+is done by this way.
+
+<P>
+<HR>
+<H2><A NAME="export_sql_FILENAME">export_sql FILENAME</A></H2>
+<P>
+Print SQL conversion output to a filename or to STDOUT if no file is given.
+
+<P>
+<HR>
+<H1><A NAME="PUBLIC_METHODS">PUBLIC METHODS</A></H1>
+<P>
+<HR>
+<H2><A NAME="_init_HASH_OPTIONS">_init HASH_OPTIONS</A></H2>
+<P>
+Initialize a Ora2Pg object instance with a connexion to the Oracle
+database.
+
+<P>
+<HR>
+<H2><A NAME="_tables">_tables</A></H2>
+<P>
+This function is used to retrieve all table information.
+
+<P>
+Set the main hash of the database structure $self->{tables}. Keys are
+the names of all tables retrieved from the current database. Each table
+information compose an array associated to the table_info key as array
+reference. In other way:
+
+<P>
+<PRE> $self->{tables}{$class_name}{table_info} = [(OWNER,TYPE)];
+</PRE>
+<P>
+TYPE Can be TABLE, VIEW, SYSTEM TABLE, GLOBAL TEMPORARY, LOCAL TEMPORARY,
+ALIAS, SYNONYM or a data source specific type identifier.
+
+<P>
+It also get the following informations in the DBI object to affect the main
+hash of the database structure :
+
+<P>
+<PRE> $self->{tables}{$class_name}{field_name} = $sth->{NAME};
+ $self->{tables}{$class_name}{field_type} = $sth->{TYPE};
+</PRE>
+<P>
+It also call these other private subroutine to affect the main hash of the
+database structure :
+
+<P>
+<PRE> @{$self->{tables}{$class_name}{column_info}} = &_column_info($self, $class_name);
+ @{$self->{tables}{$class_name}{primary_key}} = &_primary_key($self, $class_name);
+ @{$self->{tables}{$class_name}{unique_key}} = &_unique_key($self, $class_name);
+ @{$self->{tables}{$class_name}{foreign_key}} = &_foreign_key($self, $class_name);
+</PRE>
+<P>
+<HR>
+<H2><A NAME="_get_sql_data">_get_sql_data</A></H2>
+<P>
+Returns a string containing the entire SQL Schema definition compatible
+with PostgreSQL
+
+<P>
+<HR>
+<H2><A NAME="_sql_type_INTERNAL_TYPE_LENGTH">_sql_type INTERNAL_TYPE LENGTH</A></H2>
+<P>
+This function return the PostgreSQL datatype corresponding to the Oracle
+internal type.
+
+<P>
+<HR>
+<H2><A NAME="_column_info_TABLE">_column_info TABLE</A></H2>
+<P>
+This function implements a Oracle-native column information.
+
+<P>
+Return a list of array reference containing the following informations for
+each column the given a table
+
+<P>
+[( column name, column type, column length, nullable column, default value
+)]
+
+<P>
+<HR>
+<H2><A NAME="_primary_key_TABLE">_primary_key TABLE</A></H2>
+<P>
+This function implements a Oracle-native primary key column information.
+
+<P>
+Return a list of all column name defined as primary key for the given
+table.
+
+<P>
+<HR>
+<H2><A NAME="_unique_key_TABLE">_unique_key TABLE</A></H2>
+<P>
+This function implements a Oracle-native unique key column information.
+
+<P>
+Return a list of all column name defined as unique key for the given table.
+
+<P>
+<HR>
+<H2><A NAME="_foreign_key_TABLE">_foreign_key TABLE</A></H2>
+<P>
+This function implements a Oracle-native foreign key reference information.
+
+<P>
+Return a list of hash of hash of array reference. Ouuf! Nothing very
+difficult. The first hash is composed of all foreign key name. The second
+hash just have two key known as 'local' and remote' corresponding to the
+local table where the foreign key is defined and the remote table where the
+key refer.
+
+<P>
+The foreign key name is composed as follow:
+
+<P>
+<PRE> 'local_table_name->remote_table_name'
+</PRE>
+<P>
+Foreign key data consist in two array representing at the same indice the
+local field and the remote field where the first one refer to the second.
+Just like this:
+
+<P>
+<PRE> @{$link{$fkey_name}{local}} = @local_columns;
+ @{$link{$fkey_name}{remote}} = @remote_columns;
+</PRE>
+<P>
+<HR>
+<H2><A NAME="_get_privilege">_get_privilege</A></H2>
+<P>
+This function implements a Oracle-native tables grants information.
+
+<P>
+Return a hash of all groups (roles) with associated users and a hash of
+arrays of all grants on related tables.
+
+<P>
+<HR>
+<H1><A NAME="AUTHOR">AUTHOR</A></H1>
+<P>
+Gilles Darold <<A
+HREF="mailto:gilles@darold.net">gilles@darold.net</A>>
+
+<P>
+<HR>
+<H1><A NAME="COPYRIGHT">COPYRIGHT</A></H1>
+<P>
+Copyright (c) 2001 Gilles Darold - All rights reserved.
+
+<P>
+This program is free software; you can redistribute it and/or modify it
+under the same terms as Perl itself.
+
+<P>
+<HR>
+<H1><A NAME="BUGS">BUGS</A></H1>
+<P>
+This perl module is in the same state as my knowledge regarding database,
+it can move and not be compatible with older version so I will do my best
+to give you official support for Ora2Pg. Your volontee to help construct it
+and your contribution are welcome.
+
+<P>
+<HR>
+<H1><A NAME="SEE_ALSO">SEE ALSO</A></H1>
+<P>
+<EM>DBI</EM>, <A HREF="/DBD/Oracle.html">DBD::Oracle</A>
+
+
+
+</BODY>
+
+</HTML>
projects / thirdparty / postgresql.git / commitdiff
