6/23/2023 0 Comments Abap catch cx sy illegal itabOther than for logging purposes, it is not advisable to evaluate that part of the context used only locally to implement the procedure with the error. The free resources in the exception handler meaningless. This makes sense, for example, when handling resource bottlenecks if releasing resources inĬLEANUP blocks would change the context and thus make the calculation of Is to be evaluated before any cleanup activities in CLEANUPīlocks. However, it is allowed in principle during exception handling if the context of the exception Use of the addition BEFORE UNWIND for CATCH is In this case, the context of the exception is deleted before the handling process and the statement RESUME cannot be specified. Resumable exceptions can also be handled in CATCH blocks without the additionīEFORE UNWIND. This is the only case in which the context of the exception is not deleted when the CATCH block is exited. The statement RESUME can be used only when handling aĪnd only in a CATCH block in which the addition BEFORE If addition BEFORE UNWINDis not specified, the context is deleted before the CATCH block is executed. MESSAGE statement has been executed (which can be the case with message types I and S, for example), the exception CX_SY_ILLEGAL_HANDLER is raised. However, if the system returns to the CATCH block after the The context is deleted during the execution of the CLEANUPīlocks. Statement for sending messages, the ABAP runtime environment behaves as if exception handling is going This is because the context would be deleted if the CLEANUP blocks are not executed. For example, LEAVE TO TRANSACTION can be executed directly in the CATCHīlock, but not in a procedure that is called in this block. Here, which is allowed in the CATCH block. This is also the case if a statement is executed However, if the context is deleted during this type of procedure call,Ī runtime error occurs EXCP_HANDLER_FAILED_TO_UNWIND. Such cases, exception handling is correctly ended while executing the CLEANUP blocks before the statement is executed. TRANSACTION, which are statically known to leave the internal session, are permitted. REJECT, CHECK SELECT-OPTIONS, and the obsolete variant of LEAVE are forbidden, as they might leave the In a CATCHīlock with BEFORE UNWIND, no statements can be executed in which the context is closed without executing any CLEANUP blocks. If BEFORE UNWIND is used,Īfter exception handling, and in all other cases before the exception handling. Of a RESUME statement is executed in the CATCH block, processing resumes after the statement that raised the exception.Įxecuted directly before their context is deleted. In the CATCH block, the context is deleted when the CATCH block is exited. Instead, theĬontext is preserved (including all called procedures and their local data) during the execution of the CATCH block. Was raised is not deleted until the CATCH block is deleted. If the addition BEFORE UNWIND is specified, the context in which the exception If the number 0 is entered, the exception CX_SY_CONVERSION_ERROR is caught by its superclass CX_SY_ARIHMETIC_ERROR.Ĭl_demo_input=>request( CHANGING field = input ).Ĭl_demo_output=>display( || ).ĬATCH cx_sy_arithmetic_error cx_sy_conversion_error INTO DATA(exc).Ĭl_demo_output=>display( exc->get_text( ) ). If the input cannot be interpretedĪs number, the exception CX_SY_CONVERSION_NO_NUMBER is caught by its superclass CX_SY_CONVERSION_ERROR. The rule where special exception classes must be specified before general classes in CATCHĮnsures that an exception is not handled by a general exception handler (superclass) if a special handler (subclass) is provided.Ĭatch two possible exceptions with CATCH. To retain the context during execution of the CATCH block, the BEFORE UNWIND addition can be used. This order must be kept both withinĪ CATCH statement and across multiple CATCH statements of a TRY control structure.īefore the CATCH block is executed, the system by default deletes the context Specified before more general exception classes (superclasses). can be specified, with more specific exception classes (subclasses) being Statement of a TRY control structure, any number of exception classesĬx_class1 cx_class2. that are specified after the statement CATCH as wellĪs the exceptions of the subclasses of these exception classes. Introduction of a CATCH block of a TRY control structure in which exceptions can be handled.Ī CATCH block is an exception handler, meaning the program logic that isĮxecuted whenever the associated exception is raised in the TRY block of the same TRY control structure.Ī CATCH block handles the exceptions of the exception classes cx_class1Ĭx_class2. ABAP - Keyword Documentation →ĬATCH cx_class1 cx_class2. SAP NetWeaver AS ABAP Release 752, ©Copyright 2017 SAP AG.
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