From: Lasse Makholm <lasse@unity3d.com>
Date: Mon, 29 Sep 2014 16:37:32 +0000 (+0200)
Subject: Unbreak $rs->create() with empty hashref on Oracle
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=dbsrgits%2FDBIx-Class.git;a=commitdiff_plain;h=236b59c817665c1168a0eeee0562ed1e2df68e39

Unbreak $rs->create() with empty hashref on Oracle

Oracle does not support the INSERT INTO ... DEFAULT VALUES syntax used by
SQLMaker by default. Furthermore, Oracle has no way of inserting a row
without specifying any columns, so the only reasonably fix seems to be to
pick a column and supply the DEFAULT keyword as value for it.

This approach seems to work without problems, even for things like
sequence+trigger-as-auto-increment.
---

diff --git a/Changes b/Changes
index 6676078..d75824c 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,8 @@
 Revision history for DBIx::Class
 
+    * Fixes
+        - Fix $rs->create() with no values on Oracle
+
 0.082800 2014-09-25 14:45 (UTC)
     * Known Issues
         - Passing large amounts of objects with stringification overload
diff --git a/lib/DBIx/Class/Storage/DBI/Oracle/Generic.pm b/lib/DBIx/Class/Storage/DBI/Oracle/Generic.pm
index 2b4ce75..a90755c 100644
--- a/lib/DBIx/Class/Storage/DBI/Oracle/Generic.pm
+++ b/lib/DBIx/Class/Storage/DBI/Oracle/Generic.pm
@@ -115,6 +115,21 @@ sub deployment_statements {
   $self->next::method($schema, $type, $version, $dir, $sqltargs, @rest);
 }
 
+sub insert {
+  my ($self, $source, $to_insert) = @_;
+
+  # Oracle does not understand INSERT INTO ... DEFAULT VALUES syntax
+  # Furthermore it does not have any way to insert without specifying any columns
+  # We can't fix this in SQLMaker::Oracle because it doesn't know which column to add to the statement
+  unless (%$to_insert)
+  {
+    my ($col) = $source->columns;
+    $to_insert = { $col => \'DEFAULT' };
+  }
+
+  return $self->next::method($source, $to_insert);
+}
+
 sub _dbh_last_insert_id {
   my ($self, $dbh, $source, @columns) = @_;
   my @ids = ();
diff --git a/t/60core.t b/t/60core.t
index f92159b..7930fce 100644
--- a/t/60core.t
+++ b/t/60core.t
@@ -576,9 +576,11 @@ lives_ok (sub { my $newlink = $newbook->link}, "stringify to false value doesn't
 {
     my $new_artist = $schema->resultset('Artist')->new({});
     isa_ok( $new_artist, 'DBIx::Class::Row', '$rs->new gives a row object' );
+    lives_ok { $new_artist->insert() } 'inserting without specifying any columns works';
+    $new_artist->discard_changes;
+    $new_artist->delete;
 }
 
-
 # make sure we got rid of the compat shims
 SKIP: {
     my $remove_version = 0.083;
diff --git a/t/73oracle.t b/t/73oracle.t
index bdcc732..87be799 100644
--- a/t/73oracle.t
+++ b/t/73oracle.t
@@ -200,6 +200,12 @@ sub _run_tests {
     like ($seq, qr/\.${q}artist_pk_seq${q}$/, 'Correct PK sequence selected for sqlt-like trigger');
   }
 
+  lives_ok {
+    $new = $schema->resultset('Artist')->create({});
+    $new->discard_changes;
+    ok $new->artistid, 'Created row has id'
+  } 'Create with empty hashref works';
+
 
 # test LIMIT support
   for (1..6) {