=head1 NAME
-DBIx::Class::Storage::DBI::Oracle::Generic - Automatic primary key class for Oracle
+DBIx::Class::Storage::DBI::Oracle::Generic - Oracle Support for DBIx::Class
=head1 SYNOPSIS
__PACKAGE__->set_primary_key('id');
__PACKAGE__->sequence('mysequence');
+ # Somewhere in your Code
+ # add some data to a table with a hierarchical relationship
+ $schema->resultset('Person')->create ({
+ firstname => 'foo',
+ lastname => 'bar',
+ children => [
+ {
+ firstname => 'child1',
+ lastname => 'bar',
+ children => [
+ {
+ firstname => 'grandchild',
+ lastname => 'bar',
+ }
+ ],
+ },
+ {
+ firstname => 'child2',
+ lastname => 'bar',
+ },
+ ],
+ });
+
+ # select from the hierarchical relationship
+ my $rs = $schema->resultset('Person')->search({},
+ {
+ 'start_with' => { 'firstname' => 'foo', 'lastname' => 'bar' },
+ 'connect_by' => { 'parentid' => 'prior persionid'},
+ 'order_siblings_by' => 'firstname ASC',
+ };
+ );
+
+ # this will select the whole tree starting from person "foo bar", creating
+ # following query:
+ # SELECT
+ # me.persionid me.firstname, me.lastname, me.parentid
+ # FROM
+ # person me
+ # START WITH
+ # firstname = 'foo' and lastname = 'bar'
+ # CONNECT BY
+ # parentid = prior persionid
+ # ORDER SIBLINGS BY
+ # firstname ASC
+
=head1 DESCRIPTION
-This class implements autoincrements for Oracle.
+This class implements autoincrements for Oracle and adds support for Oracle
+specific hierarchical queries.
=head1 METHODS
=cut
use base qw/DBIx::Class::Storage::DBI/;
-use Carp::Clan qw/^DBIx::Class/;
+use mro 'c3';
-# For ORA_BLOB => 113, ORA_CLOB => 112
-use DBD::Oracle qw( :ora_types );
+__PACKAGE__->sql_maker_class('DBIx::Class::SQLAHacks::Oracle');
sub _dbh_last_insert_id {
my ($self, $dbh, $source, @columns) = @_;
};
# trigger_body is a LONG
- $dbh->{LongReadLen} = 64 * 1024 if ($dbh->{LongReadLen} < 64 * 1024);
+ local $dbh->{LongReadLen} = 64 * 1024 if ($dbh->{LongReadLen} < 64 * 1024);
my $sth;
+ my $source_name;
+ if ( ref $source->name ne 'SCALAR' ) {
+ $source_name = $source->name;
+ }
+ else {
+ $source_name = ${$source->name};
+ }
+
# check for fully-qualified name (eg. SCHEMA.TABLENAME)
- if ( my ( $schema, $table ) = $source->name =~ /(\w+)\.(\w+)/ ) {
+ if ( my ( $schema, $table ) = $source_name =~ /(\w+)\.(\w+)/ ) {
$sql = q{
SELECT trigger_body FROM ALL_TRIGGERS t
WHERE t.owner = ? AND t.table_name = ?
}
else {
$sth = $dbh->prepare($sql);
- $sth->execute( uc( $source->name ) );
+ $sth->execute( uc( $source_name ) );
}
while (my ($insert_trigger) = $sth->fetchrow_array) {
return uc($1) if $insert_trigger =~ m!(\w+)\.nextval!i; # col name goes here???
sub _sequence_fetch {
my ( $self, $type, $seq ) = @_;
- my ($id) = $self->dbh->selectrow_array("SELECT ${seq}.${type} FROM DUAL");
+ my ($id) = $self->_get_dbh->selectrow_array("SELECT ${seq}.${type} FROM DUAL");
return $id;
}
-=head2 connected
-
-Returns true if we have an open (and working) database connection, false if it is not (yet)
-open (or does not work). (Executes a simple SELECT to make sure it works.)
-
-The reason this is needed is that L<DBD::Oracle>'s ping() does not do a real
-OCIPing but just gets the server version, which doesn't help if someone killed
-your session.
-
-=cut
-
-sub connected {
+sub _ping {
my $self = shift;
- if (not $self->next::method(@_)) {
- return 0;
- }
- else {
- my $dbh = $self->_dbh;
+ my $dbh = $self->_dbh or return 0;
- local $dbh->{RaiseError} = 1;
+ local $dbh->{RaiseError} = 1;
- eval {
- my $ping_sth = $dbh->prepare_cached("select 1 from dual");
- $ping_sth->execute;
- $ping_sth->finish;
- };
+ eval {
+ $dbh->do("select 1 from dual");
+ };
- return $@ ? 0 : 1;
- }
+ return $@ ? 0 : 1;
}
sub _dbh_execute {
sub get_autoinc_seq {
my ($self, $source, $col) = @_;
-
+
$self->dbh_do('_dbh_get_autoinc_seq', $source, $col);
}
sub connect_call_datetime_setup {
my $self = shift;
- my $dbh = $self->dbh;
my $date_format = $ENV{NLS_DATE_FORMAT} ||= 'YYYY-MM-DD HH24:MI:SS';
my $timestamp_format = $ENV{NLS_TIMESTAMP_FORMAT} ||=
my $timestamp_tz_format = $ENV{NLS_TIMESTAMP_TZ_FORMAT} ||=
'YYYY-MM-DD HH24:MI:SS.FF TZHTZM';
- $dbh->do("alter session set nls_date_format = '$date_format'");
- $dbh->do("alter session set nls_timestamp_format = '$timestamp_format'");
- $dbh->do("alter session set nls_timestamp_tz_format='$timestamp_tz_format'");
-}
-
-sub _svp_begin {
- my ($self, $name) = @_;
-
- $self->dbh->do("SAVEPOINT $name");
+ $self->_do_query("alter session set nls_date_format = '$date_format'");
+ $self->_do_query(
+"alter session set nls_timestamp_format = '$timestamp_format'");
+ $self->_do_query(
+"alter session set nls_timestamp_tz_format='$timestamp_tz_format'");
}
=head2 source_bind_attributes
=cut
-sub source_bind_attributes
+sub source_bind_attributes
{
+ require DBD::Oracle;
my $self = shift;
my($source) = @_;
my %column_bind_attrs = $self->bind_attribute_by_data_type($data_type);
if ($data_type =~ /^[BC]LOB$/i) {
- $column_bind_attrs{'ora_type'}
- = uc($data_type) eq 'CLOB' ? ORA_CLOB : ORA_BLOB;
+ $column_bind_attrs{'ora_type'} = uc($data_type) eq 'CLOB' ?
+ DBD::Oracle::ORA_CLOB() :
+ DBD::Oracle::ORA_BLOB();
$column_bind_attrs{'ora_field'} = $column;
}
return \%bind_attributes;
}
+sub _svp_begin {
+ my ($self, $name) = @_;
+
+ $self->_get_dbh->do("SAVEPOINT $name");
+}
+
# Oracle automatically releases a savepoint when you start another one with the
# same name.
sub _svp_release { 1 }
sub _svp_rollback {
my ($self, $name) = @_;
- $self->dbh->do("ROLLBACK TO SAVEPOINT $name")
+ $self->_get_dbh->do("ROLLBACK TO SAVEPOINT $name")
+}
+
+sub _select_args {
+ my ($self, $ident, $select, $where, $attrs) = @_;
+
+ my $connect_by_args = {};
+ if ( $attrs->{connect_by} || $attrs->{start_with} || $attrs->{order_siblings_by} ) {
+ $connect_by_args = {
+ connect_by => $attrs->{connect_by},
+ start_with => $attrs->{start_with},
+ order_siblings_by => $attrs->{order_siblings_by},
+ }
+ }
+
+ my @rv = $self->next::method($ident, $select, $where, $attrs);
+
+ return (@rv, $connect_by_args);
}
-=head1 AUTHORS
+=head1 ATTRIBUTES
+
+Following additional attributes can be used in resultsets.
+
+=head2 connect_by
+
+=over 4
+
+=item Value: \%connect_by
+
+=back
+
+A hashref of conditions used to specify the relationship between parent rows
+and child rows of the hierarchy.
+
+ connect_by => { parentid => 'prior personid' }
+
+ # adds a connect by statement to the query:
+ # SELECT
+ # me.persionid me.firstname, me.lastname, me.parentid
+ # FROM
+ # person me
+ # CONNECT BY
+ # parentid = prior persionid
+
+=head2 start_with
+
+=over 4
+
+=item Value: \%condition
+
+=back
+
+A hashref of conditions which specify the root row(s) of the hierarchy.
+
+It uses the same syntax as L<DBIx::Class::ResultSet/search>
+
+ start_with => { firstname => 'Foo', lastname => 'Bar' }
+
+ # SELECT
+ # me.persionid me.firstname, me.lastname, me.parentid
+ # FROM
+ # person me
+ # START WITH
+ # firstname = 'foo' and lastname = 'bar'
+ # CONNECT BY
+ # parentid = prior persionid
+
+=head2 order_siblings_by
+
+=over 4
+
+=item Value: ($order_siblings_by | \@order_siblings_by)
+
+=back
+
+Which column(s) to order the siblings by.
+
+It uses the same syntax as L<DBIx::Class::ResultSet/order_by>
+
+ 'order_siblings_by' => 'firstname ASC'
+
+ # SELECT
+ # me.persionid me.firstname, me.lastname, me.parentid
+ # FROM
+ # person me
+ # CONNECT BY
+ # parentid = prior persionid
+ # ORDER SIBLINGS BY
+ # firstname ASC
-Andy Grundman <andy@hybridized.org>
+=head1 AUTHOR
-Scott Connelly <scottsweep@yahoo.com>
+See L<DBIx::Class/CONTRIBUTORS>.
=head1 LICENSE
projects / dbsrgits/DBIx-Class.git / blobdiff