Hi Raymond,
A good place to start are the docs, examples and FAQ. You need to
release things you transcode as talked about here:
http://xerces.apache.org/xerces-c/apiDocs-3/classXMLString.html#91b02742b80418fbc6c54b7dd353ad8c
Other memory is managed at document level and you need to release that to get
it back. Take a look at some common questions in the FAQ:
http://xerces.apache.org/xerces-c/faq-parse-2.html
and also examples like CreateDOMDocument where you will see easy easy ways to
handle transcoding issues.
Gareth
On 17 Dec 2010, at 00:33, Steele, Raymond wrote:
> Thanks,
>
> I fixed the problem by moving the createDocument and the serializer->write
> outside of the loop.
>
> I am new to this and I am now struggling because I am not sure how to convert
> my c-style character arrays to the format the xerces accepts. In the below
> snippet, I was able to convert the char[2] c_id to a c++ string and then
> transcode that to set the text content. I am still not sure how that works
> and I am afraid I am not releasing it as I think I should.
>
> DOMElement* c_id =
> document->createElement(XMLString::transcode("c_id"));
> string new_c_id(struct_name[i].c_id, sizeof(struct_name[i].c_id));
> c_id->setTextContent(XMLString::transcode(new_c_id.c_str()));
> rootElement->appendChild(c_id)
>
> If I have the following data:
>
> char c_type; (8-bits)
>
> which currently has the value of 'L'. How would I can I use that data to
> setTextContent of the c_type element below.
>
> DOMElement* c_type = document->createElement(XMLString::transcode("c_type"));
> string new_c_id;
> c_id->setTextContent(XMLString::transcode(new_c_id.c_str()));
> rootElement->appendChild(c_id)
>
> Raymond
>
>
> Raymond
>
> From: Gareth Reakes [mailto:[email protected]]
> Sent: Thursday, December 16, 2010 11:45 AM
> To: [email protected]
> Subject: Re: EXTERNAL: Re: XML Declaration
>
>
> The second is not a valid XML document. An XML document can only have 1 root
> element. If you want them to appear is <S_RPS> tags then you can create
> another element as the root element and attach them all to that.
>
> Gareth
>
>
> On 16 Dec 2010, at 18:33, Steele, Raymond wrote:
>
>
> Gareth,
>
> Thanks for such a quick response. When I do as you suggested I receive this
> output:
>
> <?xml version="1.0" encoding="UTF-8" standalone="no" ?>
> <S_RPS>
> <c_id>AA</c_id>
> <c_id>AA</c_id>
> <c_id>AA</c_id>
> <c_id>AA</c_id>
> </S_RPS>
>
> However, I want to achieve this output:
>
> <?xml version="1.0" encoding="UTF-8" standalone="no" ?>
> <S_RPS>
> <c_id>AA</c_id>
> </S_RPS>
> <S_RPS>
> <c_id>AA</c_id>
> </S_RPS>
> <S_RPS>
> <c_id>AA</c_id>
> </S_RPS>
> <S_RPS>
> <c_id>AA</c_id>
> </S_RPS>
> <S_RPS>
> <c_id>AA</c_id>
> </S_RPS>
>
> Once again, thanks for the fast response. That’s awesome.
>
> Raymond
>
> From: Gareth Reakes [mailto:[email protected]]
> Sent: Thursday, December 16, 2010 11:32 AM
> To: [email protected]
> Subject: EXTERNAL: Re: XML Declaration
>
> Hi Raymond,
>
> It does that because you are creating multiple DOM documents and
> each one of those has an XML declaration. You do that here:
>
> DOMDocument* document = implement->createDocument(0,
> XMLString::transcode("S_RPS"), 0);
>
>
> If you move that line and the next:
>
> DOMElement* rootElement = document->getDocumentElement();
>
> out of the loop then you will create 1 document with all the <c_id> elements
> inside inside a single <S_PRS> root element.
>
> Cheers,
>
> Gareth
>
>
>
> On 16 Dec 2010, at 18:17, Steele, Raymond wrote:
>
>
>
> Hello,
>
> Using Xerces 3.1.0-C++, I am creating a DOMDocument to stdout. I am trying
> to retrieve all the records in a .data file, which is in the form of a C
> struct. Each record has multiple records with many elements. When I run the
> application, the XML Declaration is repeated for each record. I do not like
> this behavior and cannot figure out how to stop it. Can someone shed some
> light? Thanks in advance. Here is a sample of the code.
>
> XMLPlatform::Initialize ();
> DOMImplmentation* implement =
> DOMImplementationRegistry::getDOMImplementation(XMLString:transcode("Core"));
>
> for ( int i=0; i<5; i++)
> {
> DOMDocument* document = implement->createDocument(0,
> XMLString::transcode("S_RPS"), 0);
> DOMElement* rootElement = document->getDocumentElement();
>
> DOMElement* c_id =
> document->createElement(XMLString::transcode("c_id"));
> string new_c_id(struct_name[i].c_id, sizeof(struct_name[i].c_id));
> c_id->setTextContent(XMLString::transcode(new_c_id.c_str()));
> rootElement->appendChild(c_id)
>
> DOMLSSerializer* serializer =
> (DOMImplementationLS*)implement)->createLSSerializer();
> DOMLSOutput* output =
> ((DOMImplementationLS*)implement)->createLSOutput();
> DOMConfiguration* config = serializer->getDomConfig();
> config->setParameter(XMLuni::fgDOMWRTFormatPrettyPrint, true);
> StdOutFormatTarget* target = new StdOutFormatTarget();
> output->setByteStream(target);
> serializer->write(document, output);
>
> delete target;
> output->release();
> serializer->release();
> }
>
> This will produce:
> <?xml version="1.0" encoding="UTF-8" standalone="no" ?>
> <S_RPS>
>
> <c_id>AA</c_id>
>
> </S_RPS>
> <?xml version="1.0" encoding="UTF-8" standalone="no" ?>
> <S_RPS>
>
> <c_id>AA</c_id>
>
> </S_RPS>
> <?xml version="1.0" encoding="UTF-8" standalone="no" ?>
> <S_RPS>
>
> <c_id>AA</c_id>
>
> </S_RPS>
> <?xml version="1.0" encoding="UTF-8" standalone="no" ?>
> <S_RPS>
>
> <c_id>AA</c_id>
>
> </S_RPS>
> <?xml version="1.0" encoding="UTF-8" standalone="no" ?>
> <S_RPS>
>
> <c_id>AA</c_id>
>
> </S_RPS>
>
> Why does it keep repeating the <?xml version="1.0" encoding="UTF-8"
> standalone="no" ?> ?
>
> Thanks!
>
>
>
>
>
>
>
>
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>
>
>
>
> --
> Gareth Reakes, CTO WE7 - Great Music, Free
> +44-20-7117-0809 http://www.we7.com
>
> “The music business is a cruel and shallow money trench, a long plastic
> hallway where thieves and pimps run free, and good men die like dogs. There's
> also a negative side. “
> - Hunter S. Thompson
>
>
>
>
> --
> Gareth Reakes, CTO WE7 - Great Music, Free
> +44-20-7117-0809 http://www.we7.com
>
> “The music business is a cruel and shallow money trench, a long plastic
> hallway where thieves and pimps run free, and good men die like dogs. There's
> also a negative side. “
> - Hunter S. Thompson
>
>
>
--
Gareth Reakes, CTO WE7 - Great Music, Free
+44-20-7117-0809 http://www.we7.com
“The music business is a cruel and shallow money trench, a long plastic hallway
where thieves and pimps run free, and good men die like dogs. There's also a
negative side. “
- Hunter S. Thompson
