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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+ \9 x# L: Y! i* to Old way
- y1 s( s, ?* c; ~// Declare pointers for an Item, Form and vector of ModelObjects
// initialize to NULL
Item *theItem = NULL;
7 ]7 Q6 W, ?. @; @3 W# ]Form *theForm = NULL;
vector< ModelObject *> objects;
...
5 }8 o) w) ]+ x5 o8 f, C// Use the Item
' }; x1 ~8 M, }, X: H1 c- HtheForm = theItem->get_item_master_tag();
objects = theItem->get_revision_list();
o New way
$ p: n: r0 y. O0 k( @% \! N) T7 `// Declare AutoPtr for an Item, Form and vector of ModelObjects
" I* P2 M$ K0 V// all AutoPtrs are instantiated as NULL
3 r  w- F* s9 ^4 ]& w4 ~Teamcenter::Soa::Common::AutoPtr<Item> theItem;
Teamcenter::Soa::Common::AutoPtr<Form> theForm;
vector< Teamcenter::Soa::Common::AutoPtr <ModelObject> > objects;
// Use of the ModelObject variables remains unchanged
+ z& ?! F% n/ h5 @) x8 ?1 X1 ctheForm = theItem->get_item_master_tag();
objects = theItem->get_revision_list();
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2 类型转换
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" j4 F5 r$ O7 I% v" Uo Old way
// Declare the variables
* {0 O4 @$ E0 n# j& `% S6 \User *user;
ModelObject *anObj;
Folder *folder;
user = sessionService->login(name,pass, “”,””, descrim ).user;
// Cast to the base ModelObject class
0 m: o1 ?) ~  M$ C1 l0 R- U( ^. sanObj = (ModelObject*)user;
// Cast to a speicfic sub-type, if not NULL
2 q0 W7 y8 v/ Y1 A// do something with the new pointer
# I& t- m! b* F! m9 j) T+ M0 nuser = dynamic_cast<User*>(anObj);
, R+ ]4 ~7 o, |$ Zif(user != NULL)
7 V1 ~. J3 w% L  A( N{
folder = user->get_home_folder();
}
  b$ ~; n/ |2 r  C/ N: W1 yo New way
// Declare the variables
/ Q" Z7 k5 k& x2 _& M# qTeamcenter::Soa::Common::AutoPtr<User> user;
Teamcenter::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>();
, Z' H; u: |; z// Put the cast to a speicfic sub-type, in a try/caTCh block
# e9 r6 N' F1 t3 @- W. z// if std::bad_cast not thrown, then cast was successful
try
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user = anObj.dyn_cast< User >();
folder = user->get_home_folder();
+ W& i$ Y, |. z* |5 t$ Z( v}
- P8 r0 K/ u& _5 O( y1 W+ ucatch(std::bad_cast&){}

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* q$ X' ?) f( I! E5 @, n3 关于NULL 赋值
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o Old way
6 }  X9 J( b3 f5 A// Declare the variables
LoginResponse response;
6 ?4 Q$ L9 m* S, |7 UUser * user;
// Call a service that returns a ModelObject (User)
9 H+ N& s4 I! Q4 r1-28 Services Guide PLM00076 Jresponse = sessionService->login(name,pass, “”,””, descrim );
2 a+ p4 B# T. v( @" u% huser = response.user;
// Test that instnace against NULL
if( user == NULL)
{
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}
else
{
// Assign NULL to the pointer
user = NULL;
}
o New way
// Declare the variables
// 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)
: ]0 [0 e9 ], \: Sresponse = sessionService->login(name,pass, “”,””, descrim );
user = response.user;
1 {! W7 S. u% D( t/ I$ I// Since we are not dealing directly with pointers,
2 u  S& P/ X5 x// NULL does not make sense here, use the isNull method from the
6 _/ O+ i/ r2 L8 K3 n' R2 `, E// AutoPtr template class.
if( user.isNull())
* Z+ d# A- b0 l{
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else
{
6 `0 i+ j& k  W* r- {. `# D// Release the instance and
: x% ?5 U, ~+ G9 D; K) wuser.release();
}

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