Hello Ariel, in you code: copyStream() is to be implemented by me or is it there in any library?
On Thu, Jun 20, 2013 at 9:25 AM, Rajath Shashidhara < rajaths.raja...@gmail.com> wrote: > Thanks ariel. > I have finished major part of this code. I only had doubt in that > queryInterface part. > > > On Thu, Jun 20, 2013 at 1:08 AM, Ariel Constenla-Haile <arie...@apache.org > > wrote: > >> Hi Rajath, >> >> On Wed, Jun 19, 2013 at 09:55:21PM +0530, Rajath Shashidhara wrote: >> > Hello, >> > >> > I'm working on the XActiveDataSink. >> > I'm slightly confused about how to handle OpenCommandArgument2.Sink . >> > The object is the one which is filled with the XActiveDataSink object >> for >> > which I have to set the InputStream by calling setInputStream() and pass >> > the XInputStream implementation. >> > This is what I have understood. But, the confusing thing is why is the >> > datatype for Sink - Object? Shoudnt it be XActiveDataSink? I'm not >> > understanding how to handle this Sink. >> >> The OpenCommandArgument2.Sink can be of different kinds, that's why its >> type is defined in a generic way as css.uno.XInterface; this interface >> is the base interface of all other interfaces: >> >> http://www.openoffice.org/api/docs/common/ref/com/sun/star/ucb/OpenCommandArgument.html#Sink >> >> css.uno.XInterface, in this case, is mapped in the Jave bridge to >> java.lang.Object: >> >> http://wiki.openoffice.org/wiki/Documentation/DevGuide/ProUNO/Java/Mapping_of_Interface_Types >> >> You have to find out if the sink is >> >> a) com.sun.star.io.XOutputStream >> b) com.sun.star.io.XActiveDataSink >> c) com.sun.star.io.XActiveDataStreamer >> >> simply query the sink for each interface. Something like this: >> >> >> private Object open( >> com.sun.star.ucb.OpenCommandArgument2 aOpenCommand, >> com.sun.star.ucb.XCommandEnvironment xEnvironment) >> throws com.sun.star.uno.Exception { >> Object oRet = com.sun.star.uno.Any.VOID; >> >> int nOpenMode = aOpenCommand.Mode; >> if (nOpenMode == com.sun.star.ucb.OpenMode.ALL >> || nOpenMode == com.sun.star.ucb.OpenMode.DOCUMENTS >> || nOpenMode == com.sun.star.ucb.OpenMode.FOLDERS) { >> if (!isFolder(xEnvironment)) { >> throw new com.sun.star.lang.IllegalArgumentException( >> "The content is not a folder!"); >> } >> com.sun.star.ucb.XDynamicResultSet xResultSet = new >> DynamicResultSet( >> m_xContext, this, aOpenCommand, xEnvironment); >> oRet = xResultSet; >> } else if (nOpenMode == com.sun.star.ucb.OpenMode.DOCUMENT) { >> Object aSink = aOpenCommand.Sink; >> if (aSink == null) { >> throw new com.sun.star.lang.IllegalArgumentException( >> "open command without sink!"); >> } >> // the Sink can be >> // a) com.sun.star.io.XOutputStream >> // b) com.sun.star.io.XActiveDataSink >> // c) com.sun.star.io.XActiveDataStreamer >> com.sun.star.io.XActiveDataStreamer xActiveDataStreamer = >> UnoRuntime.queryInterface( >> com.sun.star.io.XActiveDataStreamer.class, aSink); >> if (xActiveDataStreamer != null) { >> com.sun.star.io.XStream xStream = >> getContentStream(xEnvironment); >> xActiveDataStreamer.setStream(xStream); >> } else { >> com.sun.star.io.XOutputStream xOutputStream = >> UnoRuntime.queryInterface( >> com.sun.star.io.XOutputStream.class, aSink); >> if (xOutputStream != null) { >> com.sun.star.io.XInputStream xInputStream = >> getContentInputStream(xEnvironment); >> copyStream(xInputStream, xOutputStream); >> } else { >> com.sun.star.io.XActiveDataSink xActiveDataSink = >> UnoRuntime.queryInterface( >> com.sun.star.io.XActiveDataSink.class, aSink); >> if (xActiveDataSink == null) { >> throw new com.sun.star.lang.IllegalArgumentException( >> "open command's sink is neither >> XActiveDataStreamer, XOutputStream nor XActiveDataSink!"); >> } >> com.sun.star.io.XInputStream xInputStream = >> getContentInputStream(xEnvironment); >> xActiveDataSink.setInputStream(xInputStream); >> } >> } >> } else if (nOpenMode == >> com.sun.star.ucb.OpenMode.DOCUMENT_SHARE_DENY_NONE || >> nOpenMode == >> com.sun.star.ucb.OpenMode.DOCUMENT_SHARE_DENY_WRITE){ >> throw new UnsupportedCommandException(); >> } >> return oRet; >> } >> >> >> >> Regards >> -- >> Ariel Constenla-Haile >> La Plata, Argentina >> > > > > -- > Rajath S, > M.Sc(Hons.) Physics, > Birla Institute of Technology and Science - Pilani, > Pilani > -- Rajath S, M.Sc(Hons.) Physics, Birla Institute of Technology and Science - Pilani, Pilani
