#include <DbXml.hpp>

class DbXml::XmlException : public std::exception {
public:
	virtual const char *what() const throw();
	ExceptionCode getExceptionCode();
	int getDbErrno();
	...
};

The XmlException class represents an error condition that has occurred within the Berkeley DB XML system. The system throws an XmlException if an API method call results in an error condition. Methods on this class may be used to get further information regarding the exception. Some of these include XmlException::what and XmlException::getExceptionCode.

Below is a description of the exceptions codes that may be returned from XmlException::getExceptionCode:
XmlException::CONTAINER_CLOSED

• An operation was performed that requires the container to be open.

• An attempt was made to create an existing container.

• The specified container was not found.

• An operation was performed that requires the container to be closed.

• An unexpected error was returned from Berkeley DB.

• A named document was not found.

• An error occurred during the use of the event reader or writer interface.

• There was an XML parsing error while attempting to index a document.

• An internal error has occurred inside BDB XML.

• An invalid operation was attempted, or an invalid value passed to an operation.

• An operation that requires eager evaluation was attempted on a lazily evaluated result set.

• An attempt to allocate memory failed.

• An attempt was made to use a NULL pointer, most likely from a non-C++ API, such as Java or Python.

• A query operation was interrupted by the application.

• A query operation timed out.

• An attempt was made to refer to a transaction that was already committed or aborted.

• An index uniqueness constraint was violated.

• The referenced indexing strategy is not known.

• The container version and library version are not compatible.

• An error occurred during evaluation of an XQuery expression.

• An error occurred attempting to parse an XQuery expression.