Oracle COM Automation Feature Developer's Guide

Oracle COM Automation characteristic Developer's advisor is meant for builders who advance ideas that use COM.To use this rfile, you would like familiarity with:■ part item version (COM)■ item Linking and Embedding (OLE) Automation■ dependent question Language (SQL)■ info Definition Language (DDL)■ facts Manipulation Language (DML)■ PL/SQL or Java■ Oracle object-relational database administration (ORDBMS) concepts■ home windows NT"

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Source is the source of the exception, typically the application name. description is the error description. helpfile is the fully-qualified path name of the helpfile containing more information about the error. helpid is the help context ID of a topic within the helpfile specified by helpfile. excepInfo if true, then HRESULT has the value DISP_E_EXCEPTION, and source, description, helpfile, and helpid contain more information. Code Sample This example demonstrates the COMException exception. 3-4 Oracle COM Automation Feature Developer’s Guide Oracle COM Automation for Java Exception Handling try { // Some code which might throw a COMException exception.

Remarks Calling DestroyObject nullifies the internal representation of the object in the Oracle COM Automation Feature and releases all the interfaces associated with the object. This procedure returns a 0 when successful or a nonzero HRESULT when an error occurs. Code Sample HRESULT BINARY_INTEGER; applicationToken BINARY_INTEGER:=-1; /* At some point before this, we called CreateObject and got a valid applicationToken. DestroyObject(applicationToken); GetLastError Obtains the COM Automation error information about the last error that occurred.

It is used with a Create method. Using the constructor that takes only the progrid parameter forces Oracle COM Automation Feature to check the registry for the location of the COM object. Registry information indicates whether the COM object is local or remote. COM Automation objects created using the non-default constructors are freed with a corresponding call to Destroy. This nullifies the internal representation of the objects in the Oracle COM Automation Feature and releases all the interfaces associated with the objects.

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