X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FStorage%2FDBI%2FOracle%2FGeneric.pm;h=5ed31a049e61137a07a3ec91519a56bac105f391;hb=af0edca1cb4cc086f70fb81e9c1955230346691a;hp=a9da2c77b7632165249148adabf8b2a3e2ec11cd;hpb=0d1207e89fdfd78830e1ac236a4ac5d1fd72cda2;p=dbsrgits%2FDBIx-Class.git

diff --git a/lib/DBIx/Class/Storage/DBI/Oracle/Generic.pm b/lib/DBIx/Class/Storage/DBI/Oracle/Generic.pm
index a9da2c7..5ed31a0 100644
--- a/lib/DBIx/Class/Storage/DBI/Oracle/Generic.pm
+++ b/lib/DBIx/Class/Storage/DBI/Oracle/Generic.pm
@@ -9,15 +9,17 @@ DBIx::Class::Storage::DBI::Oracle::Generic - Oracle Support for DBIx::Class
 
 =head1 SYNOPSIS
 
-  # In your table classes
-  __PACKAGE__->load_components(qw/PK::Auto Core/);
+  # In your result (table) classes
+  use base 'DBIx::Class::Core';
   __PACKAGE__->add_columns({ id => { sequence => 'mysequence', auto_nextval => 1 } });
   __PACKAGE__->set_primary_key('id');
   __PACKAGE__->sequence('mysequence');
 
 =head1 DESCRIPTION
 
-This class implements autoincrements for Oracle.
+This class implements base Oracle support. The subclass
+L<DBIx::Class::Storage::DBI::Oracle::WhereJoins> is for C<(+)> joins in Oracle
+versions before 9.
 
 =head1 METHODS
 
@@ -53,8 +55,16 @@ sub _dbh_get_autoinc_seq {
 
   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 = ?
@@ -66,7 +76,7 @@ sub _dbh_get_autoinc_seq {
   }
   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???
@@ -76,7 +86,7 @@ sub _dbh_get_autoinc_seq {
 
 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;
 }
 
@@ -206,12 +216,6 @@ sub connect_call_datetime_setup {
 "alter session set nls_timestamp_tz_format='$timestamp_tz_format'");
 }
 
-sub _svp_begin {
-    my ($self, $name) = @_;
-
-    $self->dbh->do("SAVEPOINT $name");
-}
-
 =head2 source_bind_attributes
 
 Handle LOB types in Oracle.  Under a certain size (4k?), you can get away
@@ -229,8 +233,9 @@ table with more than one LOB column.
 
 =cut
 
-sub source_bind_attributes 
+sub source_bind_attributes
 {
+	require DBD::Oracle;
 	my $self = shift;
 	my($source) = @_;
 
@@ -255,6 +260,12 @@ sub source_bind_attributes
 	return \%bind_attributes;
 }
 
+sub _svp_begin {
+    my ($self, $name) = @_;
+
+    $self->_get_dbh->do("SAVEPOINT $name");
+}
+
 # Oracle automatically releases a savepoint when you start another one with the
 # same name.
 sub _svp_release { 1 }
@@ -262,7 +273,41 @@ sub _svp_release { 1 }
 sub _svp_rollback {
     my ($self, $name) = @_;
 
-    $self->dbh->do("ROLLBACK TO SAVEPOINT $name")
+    $self->_get_dbh->do("ROLLBACK TO SAVEPOINT $name")
+}
+
+=head2 relname_to_table_alias
+
+L<DBIx::Class> uses L<DBIx::Class::Relationship> names as table aliases in
+queries.
+
+Unfortunately, Oracle doesn't support identifiers over 30 chars in length, so
+the L<DBIx::Class::Relationship> name is shortened and appended with half of an
+MD5 hash.
+
+See L<DBIx::Class::Storage/"relname_to_table_alias">.
+
+=cut
+
+sub relname_to_table_alias {
+  my $self = shift;
+  my ($relname, $join_count) = @_;
+
+  my $alias = $self->next::method(@_);
+
+  return $alias if length($alias) <= 30;
+
+  # get a base64 md5 of the alias with join_count
+  require Digest::MD5;
+  my $ctx = Digest::MD5->new;
+  $ctx->add($alias);
+  my $md5 = $ctx->b64digest;
+
+  # truncate and prepend to truncated relname without vowels
+  (my $devoweled = $relname) =~ s/[aeiou]//g;
+  my $res = substr($devoweled, 0, 18) . '_' . substr($md5, 0, 11);
+
+  return $res;
 }
 
 =head1 AUTHOR