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 module com {  module sun {  module star {  module embed {

/** This interface allows hierarchical access to storage tree.

    <p>
    Currently only streams can be opened using this interface.
    </p>

    <p>
    The hierarchical access can not be mixed with a normal access. Thus when
    in a storage a stream with a path "a/b/c" is accessed using hierarchical
    access, another stream "a/b/d" can also be opened with hierarchical
    access ( if it is still not opened ), but the substorage "a" can not be
    opened ( it is locked by hierarchical access ).
    </p>
 */
published interface XHierarchicalStorageAccess
{
    // METHODS
    /** allows to get access to a child stream of the storage, using
        hierarchical path.

        <p>
        In case the stream is open in readonly mode the
        com::sun::star::io::XStream::getOutputStream()
        method will return an empty reference.
        </p>

        @param sStreamPath
            the path to the substream that should be open

        @param nOpenMode
            a mode the stream should be open in,
            can be a combination of ElementModes values

        @throws ::com::sun::star::embed::InvalidStorageException
            this storage is in invalid state for any reason

        @throws ::com::sun::star::lang::IllegalArgumentException
            one of provided arguments is illegal

        @throws ::com::sun::star::packages::WrongPasswordException
            the provided password is wrong

        @throws ::com::sun::star::io::IOException
            in case of io errors during stream opening

        @throws ::com::sun::star::embed::StorageWrappedTargetException
            wraps other exceptions
     */
    XExtendedStorageStream  openStreamElementByHierarchicalName(
            [in] string sStreamPath,
            [in] long nOpenMode )
        raises( ::com::sun::star::embed::InvalidStorageException,
                ::com::sun::star::lang::IllegalArgumentException,
                ::com::sun::star::packages::WrongPasswordException,
                ::com::sun::star::io::IOException,
                ::com::sun::star::embed::StorageWrappedTargetException );

    /** allows to get access to a child encrypted stream with password using
        hierarchical path.

        <p>
        If storage does not allow any encryption this method will always throw
        com::sun::star::packages::NoEncryptionException.
        </p>

        <p>
        In case the stream is open in readonly mode the
        com::sun::star::io::XStream::getOutputStream()
        method will return an empty reference.
        </p>

        @param sStreamName
            the path to the substream that should be open

        @param nOpenMode
            a mode the stream should be open in,
            can be a combination of ElementModes values

        @param sPassword
            this parameter allows to specify a reading password for the
            stream, the password must be a correct one, otherwise an
            exception will be thrown

        @throws ::com::sun::star::embed::InvalidStorageException
            this storage is in invalid state for any reason

        @throws ::com::sun::star::lang::IllegalArgumentException
            one of provided arguments is illegal

        @throws ::com::sun::star::packages::NoEncryptionException
            the stream is not encrypted

        @throws ::com::sun::star::packages::WrongPasswordException
            the provided password is wrong

        @throws ::com::sun::star::io::IOException
            in case of io errors during stream opening

        @throws ::com::sun::star::embed::StorageWrappedTargetException
            wraps other exceptions
     */
    XExtendedStorageStream  openEncryptedStreamElementByHierarchicalName(
            [in] string sStreamName,
            [in] long nOpenMode,
            [in] string sPassword )
        raises( ::com::sun::star::embed::InvalidStorageException,
                ::com::sun::star::lang::IllegalArgumentException,
                ::com::sun::star::packages::NoEncryptionException,
                ::com::sun::star::packages::WrongPasswordException,
                ::com::sun::star::io::IOException,
                ::com::sun::star::embed::StorageWrappedTargetException );

    /** removes a stream specified by hierarchical name from a storage.

        @param sElementPath
            the path to the element to remove

        @throws ::com::sun::star::embed::InvalidStorageException
            this storage is in invalid state for any reason

        @throws ::com::sun::star::lang::IllegalArgumentException
            an illegal argument is provided

        @throws ::com::sun::star::container::NoSuchElementException
            there is no element with such name

        @throws ::com::sun::star::io::IOException
            in case of io errors during removing

        @throws ::com::sun::star::embed::StorageWrappedTargetException
            wraps other exceptions

     */
    void removeStreamElementByHierarchicalName( [in] string sElementPath )
        raises( ::com::sun::star::embed::InvalidStorageException,
                ::com::sun::star::lang::IllegalArgumentException,
                ::com::sun::star::container::NoSuchElementException,
                ::com::sun::star::io::IOException,
                ::com::sun::star::embed::StorageWrappedTargetException );

};


}; }; }; };

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