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Type Casting.

Former Member

‎2007 Feb 08 5:04 AM

0 Kudos
290

I have two interface references like follwing.

data: o_storable type ref to IF_RECA_STORABLE.

data: contract_object type ref to IF_RECN_CONTRACT.

after calling following method i will receive instance of type IF_RECN_CONTRACT.

CALL METHOD cf_recn_contract=>find

EXPORTING

id_bukrs =

id_recnnr =

ID_ACTIVITY = RECA1_ACTIVITY-DISPLAY

  • IF_AUTH_CHECK = ABAP_FALSE

  • IF_ENQUEUE = ABAP_FALSE

  • IF_USE_ARCHIVE = ABAP_TRUE

receiving

ro_instance = <b>contract_object</b>

  • EXCEPTIONS

  • ERROR = 1

  • others = 2

After getting reference into <b>contract_object</b>, i will have to refer it to <b>o_storable</b>. Before refering i need to type cast <b>contract_object</b> of type IF_RECN_CONTRACT into IF_RECA_STORABLE.

Please explain me how can i do?.

1 REPLY 1
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Former Member

‎2007 Feb 08 8:56 AM

0 Kudos
244

HI,

I need more information:

IF_RECA_STORABLE and IF_RECN_CONTRACT are related to each other?

One can assign interface references to other interface/class reference variables, using the assignment operator (=) .

However, there are certain restrictions while doing so. When one does this in a program, system must be able to recognize in the syntax check whether an assignment is possible.

<iref> = <cref>, The class of the class reference <cref> must be implemnet the interface of the interface reference <iref>.

So, I need more information on relations between to interface and class of contract_object.

Thanks,

Chetan Shah