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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1 变量声明
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" l  K1 b( p3 [% z+ O! }o Old way
// Declare pointers for an Item, Form and vector of ModelObjects
// initialize to NULL
9 V( x! ~% M# eItem *theItem = NULL;
Form *theForm = NULL;
vector< ModelObject *> objects;
...
// Use the Item
theForm = theItem->get_item_master_tag();
3 A0 j# C% q" n5 O# Y: Q2 nobjects = theItem->get_revision_list();
0 O! U% t9 @! Y3 ^# ao New way
# d' r$ \7 W& |8 P// Declare AutoPtr for an Item, Form and vector of ModelObjects
// all AutoPtrs are instantiated as NULL
Teamcenter::Soa::Common::AutoPtr<Item> theItem;
! }8 p  H/ x  e- w8 b  T, vTeamcenter::Soa::Common::AutoPtr<Form> theForm;
+ Y! ?( I9 z" ~$ ^; D0 w, jvector< Teamcenter::Soa::Common::AutoPtr <ModelObject> > objects;
" _$ `) K# t# Y  J0 g3 V// Use of the ModelObject variables remains unchanged
theForm = theItem->get_item_master_tag();
objects = theItem->get_revision_list();
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9 c) V8 d! T  S; Q+ L2 类型转换

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// Declare the variables
User *user;
ModelObject *anObj;
Folder *folder;
user = sessionService->login(name,pass, “”,””, descrim ).user;
. O( G( q" Z0 ~3 a$ I2 Z/ }// Cast to the base ModelObject class
; J5 o, l" r5 ~# ranObj = (ModelObject*)user;
// Cast to a speicfic sub-type, if not NULL
, t9 Z8 l3 w: o: I3 B' l// do something with the new pointer
) ?. i* e" V* L7 k: e6 ^user = dynamic_cast<User*>(anObj);
6 W* z; h( K8 ~  R$ O4 ~, Mif(user != NULL)
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2 |0 i5 D6 M. J) K9 j, Ffolder = user->get_home_folder();
}
o New way
// Declare the variables
8 x# E: c4 e# P* R  R) i3 t+ O  E/ JTeamcenter::Soa::Common::AutoPtr<User> user;
Teamcenter::Soa::Common::AutoPtr<ModelObject> anObj;
  }8 L6 Y3 S' z% R# c5 N- STeamcenter::Soa::Common::AutoPtr<Folder> folder;
* g& A( O* T0 D6 [/ ]user = sessionService->login(name,pass, “”,””, descrim ).user;
// Cast to the base ModelObject class
  W4 m/ D6 H2 i  v7 \3 ]3 eanObj = user.cast<ModelObject>();
+ u! J0 V; X8 L0 x// Put the cast to a speicfic sub-type, in a try/caTCh block
// if std::bad_cast not thrown, then cast was successful
/ V# E' j% z# I3 Q& @try
; u( E8 \) S# z/ E5 C# {7 {& I3 Y{
6 p9 H% E. H5 M" E; Xuser = anObj.dyn_cast< User >();
folder = user->get_home_folder();
}
0 h6 l, z. ]! dcatch(std::bad_cast&){}
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3 关于NULL 赋值
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o Old way
' D$ W: Q9 y4 `' B( [/ k, O- }// Declare the variables
2 j+ N3 f" p7 kLoginResponse response;
7 W+ ?* M" @+ a+ E* w- U! {! I' |User * user;
# G! W. I9 c/ m/ b7 F, c3 B// Call a service that returns a ModelObject (User)
1-28 Services Guide PLM00076 Jresponse = sessionService->login(name,pass, “”,””, descrim );
user = response.user;
* u9 R# m8 W2 u: F// Test that instnace against NULL
if( user == NULL)
{
% ?, k$ _+ E! G; k! I! z...
}
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// Assign NULL to the pointer
user = NULL;
}
o New way
// Declare the variables
// The service data structures do not change, only
& A" t3 K2 f6 X# i) U0 P// references to ModelObjects
LoginResponse response;
Teamcenter::Soa::Common::AutoPtr<User> user;
5 B' r7 X" F" L* d  R1 v3 D# }# `0 Z// Call a service that returns a ModelObject (User)
! k' X% D) q$ v# Tresponse = sessionService->login(name,pass, “”,””, descrim );
user = response.user;
// Since we are not dealing directly with pointers,
6 F. q. {0 p6 j6 K# z; O- d7 L// NULL does not make sense here, use the isNull method from the
// AutoPtr template class.
if( user.isNull())
{
...
}
) s0 Q3 G% ]! t4 ?5 y" J9 `) selse
# P: Z: x) l; ~; S! g4 p7 w{
// Release the instance and
user.release();
}
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