QDomImplementation real dom Document;

**patrik08** · 24th June 2006, 15:57

Originally Posted by jacek

If that method returns QDomDocumentFragment, then why do you need a cast?

why? is a existing file ... trasformed to qstring and replace <? xml...>

wenn i open the file on QDomDocument ... on error.... i must return a empyty dom?
on qstring on error read i return a <nullnode/> qstring...
qt code

Qt Code:

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if(!xmlfile.open( QIODevice::ReadOnly ) ) {
    out....
    }
    QString errorStr;
    int errorLine;
    int errorColumn;
 
    QDomDocument doc("http://www.pulitzer.ch/2005/PuliCMS/1.0");
     if (!doc.setContent(&xmlfile,true, &errorStr, &errorLine, &errorColumn)) {
         QString error = (QString("Parse error at line %1, column %2:\n%3")
         .arg(errorLine)
         .arg(errorColumn)
         .arg(errorStr) );
        ErrorConfig(error);
     xmlfile.close();
     }

if(!xmlfile.open( QIODevice::ReadOnly ) ) {
    out....
    }
    QString errorStr;
    int errorLine;
    int errorColumn;
   
    QDomDocument doc("http://www.pulitzer.ch/2005/PuliCMS/1.0");
     if (!doc.setContent(&xmlfile,true, &errorStr, &errorLine, &errorColumn)) {
         QString error = (QString("Parse error at line %1, column %2:\n%3")
         .arg(errorLine)
         .arg(errorColumn)
         .arg(errorStr) );
        ErrorConfig(error);
     xmlfile.close();
     }

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the best way i think to make a similar php class on qt...

php code

php Code:

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/*  Aggregate moore xml file to one or insert xml fragment */
 
class XML extends DOMDocument {
    function __construct () {
	parent::__construct ();
	}
	function __destruct() {
    parent::__destruct();
    }
	/*  function similar from createDocumentFragment but enter xml file or pure xml frags */ 
	function appendXML_or_File($node,$frag) {
 
	if (is_file($frag)) {
	$frag = @file_get_contents($frag);
	} 
	$tmpdoc = new self('1.0', 'utf-8');
	$tmpdoc->loadXML("<dummyroot>".$this->Remove_Version($frag)."</dummyroot>") 
		or Error_Manager::msg('Error on fragment not possibel to insert xml Fragment!'.htmlentities($frag, ENT_QUOTES),__FILE__,__LINE__);
    $newnode = $node->ownerDocument->importNode($tmpdoc->documentElement,true);
    $child = $newnode->firstChild;
    while ($child) {
        $nextChild = $child->nextSibling;
        $node->appendChild($child);
        $child = $nextChild;
    }
    }
	/*  remove php code or xml header ..... */
    function Remove_Version($string) {
    return preg_replace_callback("/(<\?php|<\?)(.*?)\?>/si",create_function("","return '';"),$string);
    }
	function utf($string) {
	return Multi_Language::utf8_to_unicode($string);
	}
 
}

/*  Aggregate moore xml file to one or insert xml fragment */

class XML extends DOMDocument {
    function __construct () {
	parent::__construct ();
	}
	function __destruct() {
    parent::__destruct();
    }
	/*  function similar from createDocumentFragment but enter xml file or pure xml frags */ 
	function appendXML_or_File($node,$frag) {
	
	if (is_file($frag)) {
	$frag = @file_get_contents($frag);
	} 
	$tmpdoc = new self('1.0', 'utf-8');
	$tmpdoc->loadXML("<dummyroot>".$this->Remove_Version($frag)."</dummyroot>") 
		or Error_Manager::msg('Error on fragment not possibel to insert xml Fragment!'.htmlentities($frag, ENT_QUOTES),__FILE__,__LINE__);
    $newnode = $node->ownerDocument->importNode($tmpdoc->documentElement,true);
    $child = $newnode->firstChild;
    while ($child) {
        $nextChild = $child->nextSibling;
        $node->appendChild($child);
        $child = $nextChild;
    }
    }
	/*  remove php code or xml header ..... */
    function Remove_Version($string) {
    return preg_replace_callback("/(<\?php|<\?)(.*?)\?>/si",create_function("","return '';"),$string);
    }
	function utf($string) {
	return Multi_Language::utf8_to_unicode($string);
	}
	
}

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but can i open qtextstreams on dom?

Qt Code:

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if (! doc.setContent(qtextstreams...) )  {

if (! doc.setContent(qtextstreams...) )  {

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**jacek** · 24th June 2006, 16:09

Originally Posted by patrik08

why? is a existing file ... trasformed to qstring and replace <? xml...>

I was asking about this:

(const QDomDocumentFragment)(desc_it->GetXMLTag())

Either you don't need it or you do something Bad.

Originally Posted by patrik08

but can i open qtextstreams on dom?

Not directly, but you can try:

Qt Code:

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doc.setContent( stream.readAll() );

doc.setContent( stream.readAll() );

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**patrik08** · 24th June 2006, 17:38

The fragment is not fragment!

Qtextstream "<samplenode/>" readAll() return a false QDomDocument

and fragment give a false isDocumentFragment() why?

Qt Code:

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#include <QtDebug>
#include <QDebug> 
#include <QObject>
#include <QSettings>
#include <QErrorMessage>
#include <QProcess>
#include <QDomDocument>
#include <QDomElement>
#include <QStringList>
#include <QDir>
#include <QDomDocumentFragment>
#include <QDomImplementation>
#include <QMessageBox>
 
int main(int argc, char *argv[]) {
 
    QDomDocument dom_external; 
    QString filexmleternal = "./qtpage.xml";
    bool is_fi = false;
 
    QFile xmlfile(filexmleternal);
    if(!xmlfile.open( QIODevice::ReadOnly ) ) {
     /* stay false ! */
    }
    if (dom_external.setContent(&xmlfile)) { 
    is_fi = true;
    }
    if (!is_fi) {
      qDebug() << "External file not loadet!";   
    } else {
      qDebug() << "External file is super!! loadet!";  
      QDomDocumentFragment frag;
      frag.appendChild(dom_external);
       if (!frag.isDocumentFragment()) {
        qDebug() << "Is not a fragment !!!"; 
       }           
    }
 
   /* external file end */
  /* new qdom to insert external ... */
   QDomDocument doc;
   QDomProcessingInstruction header = doc.createProcessingInstruction( "xml", "version=\"1.0\"" );
   doc.appendChild( header );
   QDomElement root = doc.createElement( "root" );
   doc.appendChild( root );
    QDomElement big = doc.createElement( "big" );
    if (is_fi) {
    //////big.appendChild(frag);   /* not insert */
    }
    root.appendChild( big );
    /////QDomNode::isDocumentFragment ()
   qDebug() << doc.toString();
   return 0;
};

#include <QtDebug>
#include <QDebug> 
#include <QObject>
#include <QSettings>
#include <QErrorMessage>
#include <QProcess>
#include <QDomDocument>
#include <QDomElement>
#include <QStringList>
#include <QDir>
#include <QDomDocumentFragment>
#include <QDomImplementation>
#include <QMessageBox>

int main(int argc, char *argv[]) {
    
    QDomDocument dom_external; 
    QString filexmleternal = "./qtpage.xml";
    bool is_fi = false;
    
    QFile xmlfile(filexmleternal);
    if(!xmlfile.open( QIODevice::ReadOnly ) ) {
     /* stay false ! */
    }
    if (dom_external.setContent(&xmlfile)) { 
    is_fi = true;
    }
    if (!is_fi) {
      qDebug() << "External file not loadet!";   
    } else {
      qDebug() << "External file is super!! loadet!";  
      QDomDocumentFragment frag;
      frag.appendChild(dom_external);
       if (!frag.isDocumentFragment()) {
        qDebug() << "Is not a fragment !!!"; 
       }           
    }

   /* external file end */
  /* new qdom to insert external ... */
   QDomDocument doc;
   QDomProcessingInstruction header = doc.createProcessingInstruction( "xml", "version=\"1.0\"" );
   doc.appendChild( header );
   QDomElement root = doc.createElement( "root" );
   doc.appendChild( root );
    QDomElement big = doc.createElement( "big" );
    if (is_fi) {
    //////big.appendChild(frag);   /* not insert */
    }
    root.appendChild( big );
    /////QDomNode::isDocumentFragment ()
   qDebug() << doc.toString();
   return 0;
};

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pro file...

Qt Code:

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TEMPLATE = app console
TARGET += 
DEPENDPATH += .
INCLUDEPATH += .
 
win32:debug { CONFIG = console } 
CONFIG  += qt warn_on release
QT += xml
 
# Input
SOURCES += main.cpp

TEMPLATE = app console
TARGET += 
DEPENDPATH += .
INCLUDEPATH += .

win32:debug { CONFIG = console } 
CONFIG  += qt warn_on release
QT += xml

# Input
SOURCES += main.cpp

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**jacek** · 24th June 2006, 18:26

Originally Posted by patrik08

fragment give a false isDocumentFragment() why?

Probably it's a bug, use QDomDocument::createDocumentFragment() to create document fragments.

PS. If you post code, please, post only relevant part. 3/4 of your example has nothing to do with QDomDocumentFragment.

**patrik08** · 24th June 2006, 18:46

is solved so.... and fragment not run!

make a node from external root and .toElement(); after big.appendChild(extase);
to other node....

Qt Code:

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int main(int argc, char *argv[]) {
 
    QDomDocument dom_external; 
    QString filexmleternal = "./qtpage.xml";
    bool is_fi = false;
 
    QFile xmlfile(filexmleternal);
    if(!xmlfile.open( QIODevice::ReadOnly ) ) {
     /* stay false ! */
    }
    is_fi = dom_external.setContent(&xmlfile);  
    QDomElement root_extern = dom_external.documentElement(); 
    QDomNode externxml = root_extern.firstChild();
    QDomNode externxml_2 = dom_external.importNode(externxml,true);
    QDomElement extase = externxml_2.toElement(); 
 
    if (!is_fi) {
      qDebug() << "External file not loadet!";   
    } else {
      qDebug() << "External file is super!! loadet!";           
    }
 
   QDomDocument doc;
   QDomProcessingInstruction header = doc.createProcessingInstruction( "xml", "version=\"1.0\"" );
   doc.appendChild( header );
   QDomElement root = doc.createElement( "root" );
   doc.appendChild( root );
   QDomElement big = doc.createElement( "big" );
   big.appendChild(extase);  /* the external file not from fragment */
   root.appendChild( big );
 
 
 
   qDebug() << doc.toString();
   return 0;
};

int main(int argc, char *argv[]) {
    
    QDomDocument dom_external; 
    QString filexmleternal = "./qtpage.xml";
    bool is_fi = false;
    
    QFile xmlfile(filexmleternal);
    if(!xmlfile.open( QIODevice::ReadOnly ) ) {
     /* stay false ! */
    }
    is_fi = dom_external.setContent(&xmlfile);  
    QDomElement root_extern = dom_external.documentElement(); 
    QDomNode externxml = root_extern.firstChild();
    QDomNode externxml_2 = dom_external.importNode(externxml,true);
    QDomElement extase = externxml_2.toElement(); 
    
    if (!is_fi) {
      qDebug() << "External file not loadet!";   
    } else {
      qDebug() << "External file is super!! loadet!";           
    }
    
   QDomDocument doc;
   QDomProcessingInstruction header = doc.createProcessingInstruction( "xml", "version=\"1.0\"" );
   doc.appendChild( header );
   QDomElement root = doc.createElement( "root" );
   doc.appendChild( root );
   QDomElement big = doc.createElement( "big" );
   big.appendChild(extase);  /* the external file not from fragment */
   root.appendChild( big );
    
    
   
   qDebug() << doc.toString();
   return 0;
};

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