RES: Can´t acess child elements definition

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RES: Can´t acess child elements definition

RES: Can´t acess child elements definition

2003-10-07 - By Rubens Del Monte

Reply: 1 2

Max (and anybody who can help me),

I tried out that but it result in a java.lang.ClassCastException.. the
code is this :

XMLParserConfiguration config = new StandardParserConfiguration();

config.setProperty("http://apache.org/xml/properties/internal/grammar-pool",
grammarPool);
DOMParser parser = new DOMParser(config);

parser.setFeature("http://xml.org/sax/features/validation",true);

parser.setFeature("http://apache.org/xml/features/validation/schema",true);
parser.parse(filename);
doc = parser.getDocument();

org.apache.xerces.impl.xs.psvi.XSModel model =
grammarPool.toXSModel();

XSElementDeclaration elem = ((XSModelImpl)
model).getElementDeclaration("os",null);

// this line ocurrs the exception.. the XSElementDeclaration
cannot be casted into a ((ElementPSVI
XSElementDeclaration elemson = ((ElementPSVI)
elem).getElementDeclaration();

I ´ve been looking into the xerces documentation but I still havent found a
way to get the XSElementDeclaration that are child of a
XSElementDeclaration.

Thanks,

Rubens Del Monte

-----Mensagem original-----
De: Maksym Kovalenko [mailto:mkovalenko@(protected)]
Enviada em: terça-feira, 7 de outubro de 2003 16:53
Para: xerces-j-user@(protected)
Assunto: Re: Can´t acess child elements definition

For child element you can extract its declaration as the following

XSElementDeclaration elDecl = ((ElementPSVI)
childElement).getElementDeclaration();

The error in the code you've provided is that to get element declaration for
child elements you need to process content of the root element.
model.getComponents(XSConstants.ELEMENT_DECLARATION); contains only
information for elements defined in the schema's top level.

Max

Rubens Del Monte wrote:

Hello,
I´m starting to develop an application with Xerces and I´m having some
trouble acessing the validation information of child nodes.
My code is the following :

XMLParserConfiguration config = new StandardParserConfiguration();
// the pool is empty, but the schema is loaded when parsed, and the
validation occurs
config.setProperty(
"http://apache.org/xml/properties/internal/grammar-pool"
<http://apache.org/xml/properties/internal/grammar-pool> ,grammarPool);
DOMParser parser = new DOMParser(config);
parser.setFeature( "http://xml.org/sax/features/validation"
<http://xml.org/sax/features/validation> ,true);
parser.setFeature(
"http://apache.org/xml/features/validation/schema"
<http://apache.org/xml/features/validation/schema> ,true);
parser.parse(filename);
doc = parser.getDocument();

org.apache.xerces.impl.xs.psvi.XSModel model =
grammarPool.toXSModel();
// the only element this brings is the root node
XSNamedMap element = model.getComponents(XSConstants.ELEMENT_DECLARATION);
// I first tried this, but it only works with the root element, none of the
others. They don´t have namespace too
XSElementDeclaration elem = ((XSModelImpl)
model).getElementDeclaration("os",null);
.
If anyone can help me, please, I´ve been trying to do this but it´s taking
too long
Thanks,
Rubens Del Monte

--

_____

Maksym Kovalenko
Software Engineer
Marketswitch Corporation
http://www.marketswitch.com <http://www.marketswitch.com/>
108 Powers Court, Suite 225
Dulles, VA 20166
Phone: +1 (703) 444-6750 ext. 302
Fax: +1 (703) 444-6812

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<div class=Section1>

Max (and anybody who can help
me),<o:p></o:p>

<![if !supportEmptyParas]>
 <![endif]><o:p></o:p>

   I tried out
that but it result in a java.lang.ClassCastException.. the code is this :<o:p><
/o:p>

<![if !supportEmptyParas]>
 <![endif]><o:p></o:p>

XMLParserConfiguration config = new
StandardParserConfiguration();<o:p></o:p>

           
config.setProperty("http://apache.org/xml/properties/internal
/grammar-pool",grammarPool);<o:p></o:p>

           
DOMParser parser = new DOMParser(config);<o:p></o:p>

           
parser.setFeature("http://xml.org/sax/features/validation"
,true);<o:p></o:p>

           
parser.setFeature("http://apache.org/xml/features/validation/schema
",true);<o:p></o:p>

           
parser.parse(filename);<o:p></o:p>

           
doc = parser.getDocument();<o:p></o:p>

            <o:p></o:p>


           
org.apache.xerces.impl.xs.psvi.XSModel model = grammarPool.toXSModel();
<o:p></o:p>

            
<o:p></o:p>

           
XSElementDeclaration elem = ((XSModelImpl)
model).getElementDeclaration("os",null);<o:p></o:p>

<![if !supportEmptyParas]>
 <![endif]><o:p></o:p>

           
// this line ocurrs the exception.. the XSElementDeclaration cannot be
casted into a ((ElementPSVI<o:p></o:p>

           
XSElementDeclaration elemson = ((ElementPSVI)
elem).getElementDeclaration();<o:p></o:p>

<![if !supportEmptyParas]>
 <![endif]><o:p></o:p>

I ´ve been looking into the
xerces documentation but I still havent found a way to get the
XSElementDeclaration
that are child of a XSElementDeclaration.<o:p></o:p>

<![if !supportEmptyParas]>
 <![endif]><o:p></o:p>

Thanks,<o:p></o:p>

<![if !supportEmptyParas]>
 <![endif]><o:p></o:p>

Rubens Del Monte<o:p></o:p>

<![if !supportEmptyParas]>
 <![endif]><o:p></o:p>

<![if !supportEmptyParas]>
 <![endif]><o:p></o:p>

<![if !supportEmptyParas]>
 <![endif]><o:p></o:p>

-----Mensagem
original----- 
De: Maksym Kovalenko
[mailto:mkovalenko@(protected)] 
Enviada em: terça-feira, 7 de
outubro de 2003 16:53 
Para: xerces-j-user@(protected)
 
Assunto: Re: Can´t acess child
elements definition 

<![if !supportEmptyParas]
> <![endif]><o:p></o:p>

For child element you can extract its declaration as the following 
 
XSElementDeclaration elDecl = ((ElementPSVI)
childElement).getElementDeclaration(); 
 
The error in the code you've provided is that to get element declaration for
child elements you need to process content of the root element. 
model.getComponents(XSConstants.ELEMENT_DECLARATION);
contains only information for elements defined in the schema's top level. 
 
Max 
 
Rubens Del Monte wrote: 
<![if !supportLineBreakNewLine]> 
<![endif]><o:p></o:p>

<
!--[if gte mso 9]><xml>
<u1:OfficeDocumentSettings>
<u1:DoNotRelyOnCSS/>
</u1:OfficeDocumentSettings>
</xml><![endif]-->Hello, <u3:p></u3:p><o:p></o:p>

<u3:p></u3:p>    I´m starting to develop an
application with Xerces and I´m having some trouble acessing the validation
information of  child nodes.<u3:p></u3:p><o:p></o:p>

<u3:p></u3:p>My code is the following :<u3:p></u3:p><o:p></o:p>


<u3:p></u3:p><u3:p></u3:p>…<u3:p></u3:p>
<o:p></o:p>


XMLParserConfiguration
config = new StandardParserConfiguration();<u3:p></u3:p>
<o:p></o:p>


<u3:p></u3:p>// the pool is empty, but the schema is loaded when
parsed, and the validation occurs<u3:p></u3:p><o:p></o:p>


           
config.setProperty(<a
href="http://apache.org/xml/properties/internal/grammar-pool">"http:/
/apache.org/xml/properties/internal/grammar-pool"</a>,grammarPool);
<u3:p></u3:p><o:p></o:p>

<u3:p></u3:p>         
  
DOMParser parser = new DOMParser(config);<u3:p></u3:p><o:p></o:p>


           
parser.setFeature(<a href="http://xml.org/sax/features/validation">"http:/
/xml.org/sax/features/validation"</a>,true);<u3:p></u3:p><o:p></o:p>


           
parser.setFeature(<a href="http://apache.org/xml/features/validation/schema">
"http://apache.org/xml/features/validation/schema"</a>,true);<u3:p><
/u3:p><o:p></o:p>


           
parser.parse(filename);<u3:p></u3:p><o:p></o:p>


           
doc = parser.getDocument();<u3:p></u3:p><o:p></o:p>


           
<u3:p></u3:p><o:p></o:p>


           
org.apache.xerces.impl.xs.psvi.XSModel model  = grammarPool.toXSModel();
<u3:p></u3:p><o:p></o:p>

<u3:p></u3:p>         
  
// the only element this brings is the root node<u3:p></u3:p><o:p></o:p>


XSNamedMap
element = model.getComponents(XSConstants.ELEMENT_DECLARATION); <u3:p></u3:p><o:p></o:p>


<u3:p></u3:p>// I first tried this, but it only works with the root
element, none of the others. They don´t have namespace too…<u3:p></u3:p><o:p></o:p>


XSElementDeclaration
elem = ((XSModelImpl) model).getElementDeclaration("os",null);<u3:p><
/u3:p><o:p></o:p>


&
#8230;.<u3:p></u3:p><o:p></o:p>


<u3:p></u3:p><u3:p></u3:p>If anyone can help me, please, I´ve been
trying to do this but it´s taking too long…<u3:p></u3:p><o:p></o:p>


<u3:p></u3:p><u3:p></u3:p>Thanks,<u3:p></u3:p>
<o:p></o:p>


<u3:p></u3:p>Rubens Del Monte<u3:p></u3:p><o:p></o:p>

<u3:p></u3:p><![if !supportEmptyParas]> <![endif]><o:p></o:p>

-- 
<![if !supportLineBreakNewLine]> 
<![endif]><o:p></o:p>



<div class=MsoNormal align=center style='margin-left:38.85pt;text-align:center'
>

<hr size=2 width="100%" align=center>

</div>

Maksym Kovalenko 
Software Engineer 
Marketswitch Corporation 
<a href="http://www.marketswitch.com/">http://www.marketswitch.com<
/a> 
108 Powers Court, Suite 225 
Dulles, VA 20166 
Phone: +1 (703) 444-6750 ext. 302 
Fax: +1 (703) 444-6812<o:p></o:p>

</div>

</body>

</html>