Arnulf Wiedemann wrote:
Hi,
I am trying to use the XInvocation invoke function and generating directly the
urp protocol input to be read from a ooo server started listening on the urp
protocoll socket. This is working correctly for some calls, but there is a
problem using the XComponentLoader loadComponentFromURL method.
invoke expects for the aParams Parameter a sequence<any>
That works ok for the first three arguments of loadComponentFromURL:
URL string -> TypeClass STRING and a compressed String
TargetFrameName -> TypeClass STRING and a compressed String
SearchFlags long -> TypeClass LONG and a long value
Arguments -> ??? (I am trying: TypeClass SEQUENCE and the type_cache_index
for ::com::sun::star::beans::PropertyValue followed by the marshalled STRUCT
members, with no success)
How can I marshal a "sequence< ::com::sun::star::beans::PropertyValue >" ?
Reading the code in source/remote/urp/urp_unmarshal.cxx:
Unpacking a sequence of ANY in the OReaderThread on the server calls for every
member of that sequence the method unpack for ANY. Within "case
typelib_TypeClass_ANY:" method unpackType is called and for types > 14
(SEQUENCE == 20) after unpacking the nTypeClass, a typecache index is
expected (file urp_unmarshal.cxx).
I made that type for the typecache
index ::com::sun::star::beans::PropertyValue (marshaling the appropriate
nCacheIndex), and after the call to method unpackType on the server side in
that case directly a ::com::sun::star::beans::PropertyValue STRUCT is
expected method unpack (in file urp_unmarshal.cxx), because nCacheIndex
forces the type to be ::com::sun::star::beans::PropertyValue (== STRUCT).
I think that is not correct, because in the case of a SEQUENCE (within an ANY)
there should be first a call to determine the size of the sequence and after
have the sequence_size the elements of the sequence should be unmarshalled
(in my case the ::com::sun::star::beans::PropertyValue STRUCT elements).
I have tried a lot of different ways for marhsaling the Arguments parameter
with no success (either with a "no conversion possible" exception or passing
the code with the comment "severe error during extracting, dispose" comment).
Or is there another way for marshaling the Arguments parameter on the client
side?
Arnulf
A sequence of length k is represented in URP as the compressed number k
(see <http://udk.openoffice.org/common/man/spec/urp.html> for the
definition of "compressed number") followed by the URP representations
of the values v1, ..., vk. A quick glance at urp_unmarshal.cxx suggests
that the code works as intended: unpack of an ANY reads the type and for
type==SEQUENCE iterates to unpack a SEQUENCE, which first of all reads
the compressed number k.
-Stephan
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