Teamcenter SOA开发中关于变量声明，转换等代码的新处理方式

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Teamcenter SOA开发中关于变量声明，转换等代码的新处理方式
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% }7 E  I' ~$ Z" a& K1 变量声明
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) V# h: s  o1 ^. q3 a0 {' ~( R8 ~o Old way
// Declare pointers for an Item, Form and vector of ModelObjects
// initialize to NULL
Item *theItem = NULL;
Form *theForm = NULL;
4 ]' y7 \: L1 G6 l7 t- P, `vector< ModelObject *> objects;
, S! c$ Y5 W7 ~" B( x; z( z...
" M. y8 O4 n1 Y! c) O3 P// Use the Item
theForm = theItem->get_item_master_tag();
* Q; Y% A9 v7 I- E/ a& N3 L% Gobjects = theItem->get_revision_list();
o New way
// Declare AutoPtr for an Item, Form and vector of ModelObjects
// all AutoPtrs are instantiated as NULL
Teamcenter::Soa::Common::AutoPtr<Item> theItem;
1 [/ t+ S* z' l  n3 N1 i& aTeamcenter::Soa::Common::AutoPtr<Form> theForm;
vector< Teamcenter::Soa::Common::AutoPtr <ModelObject> > objects;
( {' n/ |% l; a0 N// Use of the ModelObject variables remains unchanged
theForm = theItem->get_item_master_tag();
objects = theItem->get_revision_list();
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2 类型转换

o Old way
// Declare the variables
' z* M  ^* [3 R- d% \User *user;
ModelObject *anObj;
Folder *folder;
- S) Y+ N0 u; h  }: N6 l7 k% Puser = sessionService->login(name,pass, “”,””, descrim ).user;
) B2 M  ~3 r, C6 R+ O// Cast to the base ModelObject class
anObj = (ModelObject*)user;
// Cast to a speicfic sub-type, if not NULL
* D3 N% \* c, [/ T// do something with the new pointer
' t: _) g6 M9 m1 V. {( m3 @; E6 s9 kuser = dynamic_cast<User*>(anObj);
  y2 H: `) B) F2 r( wif(user != NULL)
{
folder = user->get_home_folder();
}
o New way
. _% T- z$ p! E# ~, E" a// Declare the variables
Teamcenter::Soa::Common::AutoPtr<User> user;
8 k1 D7 h; M6 m3 s9 g6 n5 sTeamcenter::Soa::Common::AutoPtr<ModelObject> anObj;
Teamcenter::Soa::Common::AutoPtr<Folder> folder;
user = sessionService->login(name,pass, “”,””, descrim ).user;
// Cast to the base ModelObject class
anObj = user.cast<ModelObject>();
6 ~) S: L9 u( E3 w// Put the cast to a speicfic sub-type, in a try/caTCh block
6 l% f! J' c- U// if std::bad_cast not thrown, then cast was successful
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+ e3 o/ M# i# y/ y6 [: Q) l; b4 A9 Wuser = anObj.dyn_cast< User >();
folder = user->get_home_folder();
6 j( u+ b- b) H& Z) v}
# b) N8 x0 i) d' o% g, j3 h. d' Ocatch(std::bad_cast&){}
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3 关于NULL 赋值
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o Old way
  j4 }) M; r3 Z- v+ ?4 P" ?// Declare the variables
4 G0 I3 N7 ?! T% T) N. nLoginResponse response;
User * user;
7 t+ d" c7 N' }+ s6 S: t0 C// Call a service that returns a ModelObject (User)
8 y8 v$ ]3 o# g; A; x5 P2 G/ r1-28 Services Guide PLM00076 Jresponse = sessionService->login(name,pass, “”,””, descrim );
2 s% n3 m: ^# o" A3 F6 f1 {+ k7 Vuser = response.user;
0 J1 {" l% @0 t. H* O' k( ^// Test that instnace against NULL
if( user == NULL)
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else
3 A  g" w2 Q4 e) y5 ]: k{
// Assign NULL to the pointer
$ P5 k" ?% L, v# `1 C8 muser = NULL;
}
' L" l$ K& q8 L- po New way
// Declare the variables
' |% T% [6 g& J3 _+ L" z// The service data structures do not change, only
// references to ModelObjects
LoginResponse response;
Teamcenter::Soa::Common::AutoPtr<User> user;
// Call a service that returns a ModelObject (User)
7 C$ l: G2 o9 p9 @- N8 nresponse = sessionService->login(name,pass, “”,””, descrim );
user = response.user;
// Since we are not dealing directly with pointers,
. l2 O3 _* s: I* K# h6 U. n9 w  ?// NULL does not make sense here, use the isNull method from the
// AutoPtr template class.
if( user.isNull())
{
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}
else
{
// Release the instance and
user.release();
}
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