[IMP] If the value is a str or unicode and the value is empty, we return a empty string
[IMP] If the value is a str or unicode and the value is empty, we return a empty string
splbio/openobject-server,splbio/openobject-server,vnc-biz/openerp-server,MarkusTeufelberger/openobject-server,splbio/openobject-server,ovnicraft/openerp-server,vnc-biz/openerp-server,gisce/openobject-server,xrg/openerp-server,gisce/openobject-server,MarkusTeufelberger/openobject-server,xrg/openerp-server,ovnicraft/openerp-server,gisce/openobject-server,MarkusTeufelberger/openobject-server