X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBM%2FDeep%2FEngine%2FDBI.pm;h=10f5b17aa5011f350257dd22858bc9b6cded808c;hb=bd6b4f3cc1bf5f5448dc37a362d324118bbc82c5;hp=b00b98ae103a9b717a3d2aae412131e79aac793a;hpb=7c92743701bf50496060f64e671d80965654a219;p=dbsrgits%2FDBM-Deep.git

diff --git a/lib/DBM/Deep/Engine/DBI.pm b/lib/DBM/Deep/Engine/DBI.pm
index b00b98a..10f5b17 100644
--- a/lib/DBM/Deep/Engine/DBI.pm
+++ b/lib/DBM/Deep/Engine/DBI.pm
@@ -311,15 +311,68 @@ sub write_value {
     return 1;
 }
 
-sub begin_work { die "Transactions are not supported by this engine" } 
-sub rollback   { die "Transactions are not supported by this engine" } 
-sub commit     { die "Transactions are not supported by this engine" }
+sub begin_work {
+    my $self = shift;
+    die "Transactions are not supported by this engine"
+        unless $self->supports('transactions');
+
+    if ( $self->in_txn ) {
+        DBM::Deep->_throw_error( "Cannot begin_work within an active transaction" );
+    }
+
+    $self->storage->begin_work;
+
+    $self->in_txn( 1 );
+
+    return 1;
+} 
+
+sub rollback {
+    my $self = shift;
+    die "Transactions are not supported by this engine"
+        unless $self->supports('transactions');
+
+    if ( !$self->in_txn ) {
+        DBM::Deep->_throw_error( "Cannot rollback without an active transaction" );
+    }
+
+    $self->storage->rollback;
+
+    $self->in_txn( 0 );
+
+    return 1;
+} 
+
+sub commit {
+    my $self = shift;
+    die "Transactions are not supported by this engine"
+        unless $self->supports('transactions');
+
+    if ( !$self->in_txn ) {
+        DBM::Deep->_throw_error( "Cannot commit without an active transaction" );
+    }
+
+    $self->storage->commit;
+
+    $self->in_txn( 0 );
+
+    return 1;
+}
+
+sub in_txn {
+    my $self = shift;
+    $self->{in_txn} = shift if @_;
+    $self->{in_txn};
+}
 
 sub supports {
-    shift;
+    my $self = shift;
     my ($feature) = @_;
 
-    return if $feature eq 'transactions';
+    if ( $feature eq 'transactions' ) {
+#        return 1 if $self->storage->driver eq 'sqlite';
+        return;
+    }
     return;
 }