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<h2 class="title"><a id="Exception_classes_group"></a>Chapter 29.
Dbstl Exception Classes </h2>
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<p>dbstl throws several types of exceptions on several kinds of errors, the exception classes form a class hiarachy. </p>
<p>First, there is the <a class="link" href="DbstlException.html" title="Chapter 30. DbstlException">DbstlException</a>
, which is the base class for all types of dbstl specific concrete exception classes. <a class="link" href="DbstlException.html" title="Chapter 30. DbstlException">DbstlException</a>
inherits from the class DbException of Berkeley DB C++ API. Since DbException class inherits from C++ STL exception base class std::exception, you can make use of all Berkeley DB C++ and dbstl API exceptions in the same way you use the C++ std::exception class.</p>
<p>Besides exceptions of <a class="link" href="DbstlException.html" title="Chapter 30. DbstlException">DbstlException</a>
and its subclasses, dbstl may also throw exceptions of DbException and its subclasses, which happens when a Berkeley DB call failed. So you should use the same way you catch Berkeley DB C++ API exceptions when you want to catch exceptions throw by Berkeley DB operations.</p>
<p>When an exception occurs, dbstl initialize an local exception object on the stack and throws the exception object, so you should catch an exception like this:</p>
<p>try { dbstl operations } catch(DbstlException ex){ Exception handling throw ex; // Optionally throw ex again } </p>
<h4><a id="id1574255"></a> Public Members </h4>
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DbstlException</a>
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DbstlException</td>
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InvalidArgumentException</a>
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InvalidArgumentException</td>
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