Hi Kohei,
The OOXML support is already implemented by the
"com.sun.star.embed.StorageFactory" service. The factory is now able to
create storages supporting the format. In close future it is planned to
create all the storages as a new UNO services. Until then the current
factory-based solution is used.
So currently the most comfortable way to create the new storages is to
use the new methods from ::comphelper::OStorageHelper helper class
declared in "comphelper/storagehelper.hxx":
GetTemporaryStorageOfFormat()
GetStorageOfFormatFromURL()
GetStorageOfFormatFromInputStream()
GetStorageOfFormatFromStream()
The supported formats are declared in the same header, so for example to
create a storage of OFOPXML format from an URL with read access a
following call could be used:
::comphelper::OStorageHelper::GetStorageOfFormatFromURL(
OFOPXML_STORAGE_FORMAT_STRING, aURL, css::embed::ElementModes::READ );
When the new approach for storages creation is implemented the methods
will be adjusted.
The storage supporting the OOXML format implements
"::com::sun::star::embed::XStorage" interface and is very close to the
OOo package storages in it's behaviour.
Main differences to the package storage:
- no encryption is supported
- [Content_Type].xml is used instead of manifest.xml for type information
- only streams support MediaType property
- relationships related storages are not visible to the user
- relationships are treated as part of information controlled by related
storage/stream object
- a relationship information related to a storage/stream object can be
accessed using new interface
"::com::sun::star::embed::XRelationshipAccess" implemented by the
object. Please see the interface idl-documentation for details.
Questions are welcome.
Best regards,
Mikhail.
PS: I have done CC to the framework list since this information could be
interesting for others.
Kohei Yoshida wrote:
Hi Mikhail,
Daniel Rentz recommended that I contact you regarding questions for the
package module. I hope I've hit the right person. :-)
I'm in the process of writing export code for Office Open XML filter.
Little work has been done so far, but my research tells me that I would
need to make use of / make some modification to the package module
(among others) to enable OOXML export.
So far, I've encountered three package classes:
1. ZipPackage (package)
2. OStorage (package)
3. SotStorage (sot)
I would be nice to have a little overview of these three classes, and/or
any recommendations you might have for OOXML export. :-)
Thanks, and have a nice day.
Kohei
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