Added exists() to check for existence of data, getColumnCount() as alias to count() and renamed has() to hasRelation() for clarity
Added exists() to check for existence of data, getColumnCount() as alias to count() and renamed has() to hasRelation() for clarity

git-svn-id: c8c49e1140e1cd2a8fb163f3c2b0f6eec231a71d@249 625475ce-881a-0410-a577-b389adb331d8

j13k/doctrine1,j13k/doctrine1