Essential Use Cases and Responsibility in Object-Oriented ...

44 downloads 45013 Views 271KB Size Report
use cases can also drive object-oriented development directly ... I n this paper, we explore the application of es- ..... system role relating to accounts and money.
 

   ! #"$ %# &(' # ) "+*,.-/,0 )21

3.5476   $89  :@?BADC$EGFHFJIG>,KJL M,NO>@P$QR;,=JIG>,K7S TUMVXWY>ZN\[.>(?]; ^ _a` ; ;Ib;,c dMeA ` >ZN\MfABE _ M,I.MVgFihj;NO[JklABEmVHn ^ _ EG>(V _ >(P opE _ Aq;?]EGM\rpV/Ets>(?BPBEuAwvx;,c y>(ImImEmVgn,Aq;V y>ZImIGEmVHnfAq;V.K7QR>zT|{.>(M,IGM,VgF } ?];,=>@?BA~K€~ƒ‚7K€>@TUM,V.„†…N _ Pˆ‡‰sgkTp‡€M _ ‡€VHŠ +‹ Œ!#Ž%‘z’†Ž ™¬¢¬“g–%–w”•Ÿ­”—”—¶(ªz–%˜~®q˜B˜z®q™•šœœ”¬›q®qšœ¤~ ¨Bš©¯Bœš©°G™¥žz±²¯O¢•”—–#–  –l™•ªz³ˆ›ƒŸ#š‰›†™·›Bœ”—®q–w– ¨B”¡ ž¸Z~–%–%Ÿ ”e›†™¬šœ®q¢•¹q–£ ±~–%žz©¯x”¬›q–#¤z¢,Ÿ%”¥›†šœ˜]™•¶ˆ¢•™¬™•›B–%ž~Ÿ&˜B¢¬™w™•–R¦§ š©®B˜´¢¬–wœ›†š©º]¨B˜@ž~ª]³𩙥¢•«H–#”—¯ˆµ3–%”—š©–%¨B™¬˜B–#ªBµ™­™w” ¦ ±²žz®q”—¢– žzŸ#”¬›B–#”—¢´–w”š©˜]Ÿ#™¬›q–%˜¿¢—±u›B›†Ÿ ‰”—–»®j³ˆ³ˆ–w¢¬”—šœšœ¹q¨q–´˜f¼j®q¤ˆ½Z¼3Ì ­ÒHóGËg®q˜@îƒÍ•”¥*ə­›† ˜]̃™¬ÍRšœ˜~í,–\Ï#›qÉwИz³þ áf /ž@ͬŸ îB¯ù óGöuÔù­îƒ¼3,÷ Õ´+J¼3øˆöuáfÎq®ˆÉŸ­Â]óôÌ ° Ï&ózöÁï†É-ò@D̼lÔ%ÎB³~É ³ˆ÷ š‰Ï+”¬®qˆò(°mνe›†˜zÌ ­³bóGËgá†Í¬žˆÉ#° ¼ èg¢¬–%˜B™•šœŸ#– ›†œG¦eã%äqä ~¼ â x7l†åbæ7࿖%›q¤@Âa–wš©Ÿ#˜~Ÿ%¨Ç› ™¬ª~wz–3¼ÃŸ#½ ›B”—𩢬–´±u”—±²/°®q./¢¢•›+®aŸ­ž@ÂZ”—¼ Õ›B”—–w–´”—šœ±²¨q¢•˜~›qšœµ ˜~¨ç–%«H”•®BŸ ¢¬–%ÂZ˜z¼ ›†¢•+dš©®]z”#É Æ 3 – # Ÿ >d3î†÷€÷ ómî†÷ #a?"É ~̆Í&ót@¦ e } eU~&¦fãwäqYä ez¼ â x ‘åbæ7Ÿ#®q–%˜a¤@¹q–w–%Ÿ#¢•Ÿ%”•;› ›ƒ™•w@š©®B¼Z˜z½ ”#¼ 𩢬d+ ±u”¥z"° *É./¢¬>d®ˆ3Ÿ­ÂZî†÷€¼÷ óôÖJîƒ÷ ª~# –»?›†"É ¢¬ ~™Ã̆®qÍ&ót±g¦ˆµ3ê } –%cy›†~&˜z¦Zš©ã%˜~äB¨q䆱²ž~êz ¼

hDt C t 4t Yt

ã