### XmlContainer::getIndexSpecification |

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###

    #include <DbXml.hpp>

    XmlIndexSpecification XmlContainer::getIndexSpecification(DbTxn *txn);

### Description: XmlContainer::getIndexSpecification

The XmlContainer::getIndexSpecification method retrieves the current indexing specification for the container. The indexing specification can be modified with the XmlContainer::setIndexSpecification method.

The application must open the container before attempting to retrieve its indexing specification.

### Parameters

txn
  If the operation is to be transaction-protected, the txn parameter is a transaction handle returned from DbEnv::txn_begin, otherwise, NULL.

Returns the current indexing specification for the container.

### Errors

The XmlContainer::getIndexSpecification method may fail and throw XmlException, encapsulating one of the following non-zero errors:

CONTAINER_CLOSED
  The container is closed.

DATABASE_ERROR
  An error occurred in an underlying Berkeley DB database. The XmlException::getDbError method will return the error code for the error.

### Class

XmlContainer, XmlDocument, XmlException, XmlIndexSpecification, XmlQueryContext, XmlQueryExpression, XmlResults, XmlUpdateContext, XmlValue`

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