 | | | XML validation using xml schema string | XML validation using xml schema string 2003-01-24 - By Praveen Peddi
Hi Jeff,
I did exactly what you told and it doesn't seem to work. Please look at the
following code and see if I am doing anything wrong.
The error I get is:
**Parsing Error**
Line: 1
URI: null
Message: cvc-elt.1: Cannot find the declaration of element 'content'.
SAXException Exception
Total time of SAXValidate:3546
org.xml.sax.SAXException: Error Validating the content XML.
at XMLValidator.validateXmlAgainstLocalSchema(XMLValidator.java:105)
My Entity Resolver is:
public class SchemaEntityResolver implements EntityResolver {
InputSource source;
EntityResolver defaultResolver;
String fakeLocationURI;
public SchemaEntityResolver(EntityResolver defaultResolver, String
mySchemaString,
String fakeLocationURI) {
source = new InputSource(new StringReader(mySchemaString));
this.defaultResolver = defaultResolver;
this.fakeLocationURI = fakeLocationURI;
}
public InputSource resolveEntity(String pubId, String sysId)
throws IOException, SAXException {
if ((pubId != null && pubId.equals(fakeLocationURI))
|| (sysId != null && sysId.equals(fakeLocationURI))) {
return source;
}
return defaultResolver.resolveEntity(pubId, sysId);
}
}
And My validate method is as follows:
public static void validateXmlAgainstLocalSchema(String XMLString, String
schemaString) throws SAXException{
long startTime = System.currentTimeMillis();
System.out.println("Files: XML:" + XMLString + " XSD:" +
schemaString);
XMLReader parser = null;
// Instantiate a parser
try{
parser = XMLReaderFactory.createXMLReader("org.apache.xerces
.parsers.SAXParser");
} catch (org.xml.sax.SAXException ex){
System.out.println("SAXException Exception");
throw new SAXException("Error Obtaining the parser.");
}
try{
// Register the error handler
parser.setErrorHandler(new SchemaErrorHandler());
//parser.setFeature("http://apache.org/xml/features/continue
-after-fatal-error", true);
// Turn on validation
parser.setFeature("http://xml.org/sax/features/namespaces",true
);
parser.setFeature("http://xml.org/sax/features/validation",
true);
parser.setFeature("http://apache.org/xml/features/validation
/schema",true);
parser.setFeature("http://apache.org/xml/features/validation
/schema-full-checking",true);
//parser.setProperty("http://apache.org/xml/properties/schema
/external-noNamespaceSchemaLocation",Schema);
parser.setEntityResolver(new SchemaEntityResolver(parser.getEntityResolver(
), schemaString, "http://www.contextmedia.com"));
} catch (org.xml.sax.SAXNotRecognizedException ex){
ex.printStackTrace();
System.out.println("SAXNotRecognizedException Exception");
} catch (org.xml.sax.SAXNotSupportedException ex){
ex.printStackTrace();
System.out.println("SAXNotSupportedException Exception");
}
// Parse the document
try{
//String XMLSystemId = new File(XMLString).toURL()
.toExternalForm();
parser.parse(new InputSource(new StringReader(XMLString)));
//parser.parse(XMLSystemId);
System.out.println("Parsed Successfully by SAX Parser");
} catch (org.xml.sax.SAXException ex){
System.out.println("SAXException Exception");
throw new SAXException("Error Validating the content XML.");
} catch (java.io.IOException ex){
System.out.println("IOException Exception");
throw new SAXException("Error Validating the content XML.");
} finally {
long endTime = System.currentTimeMillis();
System.out.println("Total time of SAXValidate:"+(endTime-startTime));
}
}
----- Original Message -----
From: "Jeff Greif" <jgreif@(protected)>
To: <xerces-j-user@(protected)>
Sent: Thursday, January 23, 2003 3:07 PM
Subject: Re: XML validation using xml schema string
> Something like this (just typed into mail message, neither compiled nor
> tested).
>
> in main:
>
> DomParser parser = new DomParser();
> parser.setEntityResolver(new
> MyEntityResolver(parser.getEntityResolver(),
>
> mySchemaString, myfakeSchemaLocationURI));
>
> class MyEntityResolver {
> InputSource source;
> EntityResolver defaultResolver;
> String fakeLocationURI;
> public MyEntityResolver(EntityResolver default, String mySchemaString,
> String fakeLocationURI) {
> source = new InputSource(new StringReader(mySchemaString));
> defaultResolver = default;
> this.fakeLocationURI = fakeLocationURI;
> }
> public InputSource resolveEntity(String pubId, String sysId) {
> if ((pubId != null && pubId.equals(fakeLocationURI))
> || (sysId != null && sysId.equals(fakeLocationURI))) {
> return source;
> }
> return defaultResolver.resolveEntity(pubId, sysId);
> }
>
> }
>
> Jeff
> ----- Original Message -----
> From: "Praveen Peddi" <ppeddi@(protected)>
> To: <xerces-j-user@(protected)>
> Sent: Thursday, January 23, 2003 10:51 AM
> Subject: Re: XML validation using xml schema string
>
>
> > Jeff,
> > I think I didn't get you completely.
> >
> > Could you please write a sample code or modify my code below so that I can
> > understand what you are syaing.
> >
> > Thanks
> > Praveen
> > ----- Original Message -----
> > From: "Jeff Greif" <jgreif@(protected)>
> > To: <xerces-j-user@(protected)>
> > Sent: Thursday, January 23, 2003 11:28 AM
> > Subject: Re: XML validation using xml schema string
> >
> >
> > > I'm not able to give information correct in detail, but here is an
> outline
> > > of what must happen:
> > >
> > > The entity resolver is called with a namespace URI or a schema location
> as
> > > an argument, I think. In the course of parsing your instance document
> > (.xml
> > > file), it will be called to process your schema's namespace and possibly
> > > other namespaces (e.g. the XMLSchema-instance namespace) mentioned
> > therein.
> > > Probably you should get the default entity resolver for the parser
> (which
> > > knows how to handle some things, presumably), and create your own entity
> > > resolver holding that one as a member. Then when asked for a particular
> > > schema by its namespace or location, if it's your schema, return the
> input
> > > source as your code below does, otherwise, pass the request to the
> member
> > > resolver which knows better than you what to do.
> > >
> > > Jeff
> > >
> > > ----- Original Message -----
> > > From: "Praveen Peddi" <ppeddi@(protected)>
> > > To: <xerces-j-user@(protected)>
> > > Sent: Thursday, January 23, 2003 7:44 AM
> > > Subject: Re: XML validation using xml schema string
> > >
> > >
> > > > I posted a question yesterday about the validation of XML against the
> > > local
> > > > schema (in memory). Could anyone please look at the message below and
> > > reply
> > > > if you know the answer.
> > > >
> > > > Thanks in Advance.
> > > >
> > > > Praveen
> > > > ----- Original Message -----
> > > > From: "Praveen Peddi" <ppeddi@(protected)>
> > > > To: <sandygao@(protected)>; <xerces-j-user@(protected)>
> > > > Sent: Wednesday, January 22, 2003 1:35 PM
> > > > Subject: Re: XML validation using xml schema string
> > > >
> > > >
> > > > > As you said I wrote an EntityResolver but it didn't work. Could you
> > send
> > > > me
> > > > > a sample code (just the validation code) if u already have one.
> > > > >
> > > > > My validate method looks as follows:
> > > > >
> > > > > public static void validateXmlAgainstLocalSchema(String XMLString,
> > > String
> > > > > schemaString) throws SAXException{
> > > > > long startTime = System.currentTimeMillis();
> > > > > System.out.println("Files: XML:" + XMLString + " XSD:" +
> > > > > schemaString);
> > > > > XMLReader parser = null;
> > > > > // Instantiate a parser
> > > > > try{
> > > > > parser =
> > > > >
> > XMLReaderFactory.createXMLReader("org.apache.xerces.parsers.SAXParser");
> > > > > } catch (org.xml.sax.SAXException ex){
> > > > > System.out.println("SAXException Exception");
> > > > > throw new SAXException("Error Obtaining the parser.");
> > > > > }
> > > > >
> > > > > try{
> > > > >
> > > > > // Register the error handler
> > > > > parser.setErrorHandler(new SchemaErrorHandler());
> > > > >
> > > > >
> > > > >
> > > >
> > >
> >
> //parser.setFeature("http://apache.org/xml/features/continue-after-fatal-err
> > > > > or", true);
> > > > > // Turn on validation
> > > > >
> > > > > parser.setFeature("http://xml.org/sax/features/namespaces",true);
> > > > >
> > > > parser.setFeature("http://xml.org/sax/features/validation",
> > > > > true);
> > > > >
> > > > >
> > > >
> > >
> >
> parser.setFeature("http://apache.org/xml/features/validation/schema",true);
> > > > >
> > > > >
> > > >
> > >
> >
> parser.setFeature("http://apache.org/xml/features/validation/schema-full-che
> > > > > cking",true);
> > > > >
> > > > >
> > > >
> > >
> >
> //parser.setProperty("http://apache.org/xml/properties/schema/external-noNam
> > > > > espaceSchemaLocation",Schema);
> > > > > parser.setEntityResolver(new
> SchemaEntityResolver(schemaString));
> > > > >
> > > > >
> > > > > } catch (org.xml.sax.SAXNotRecognizedException ex){
> > > > > ex.printStackTrace();
> > > > > System.out.println("SAXNotRecognizedException
> > > > > Exception");
> > > > > } catch (org.xml.sax.SAXNotSupportedException ex){
> > > > > ex.printStackTrace();
> > > > > System.out.println("SAXNotSupportedException
> > > > > Exception");
> > > > > }
> > > > >
> > > > > // Parse the document
> > > > > try{
> > > > > //String XMLSystemId = new
> > > > > File(XMLString).toURL().toExternalForm();
> > > > > parser.parse(new InputSource(new
> > > > StringReader(XMLString)));
> > > > > //parser.parse(XMLSystemId);
> > > > > System.out.println("Parsed Successfully by SAX
> > Parser");
> > > > > } catch (org.xml.sax.SAXException ex){
> > > > > System.out.println("SAXException Exception");
> > > > > throw new SAXException("Error Validating the content XML.");
> > > > > } catch (java.io.IOException ex){
> > > > > System.out.println("IOException Exception");
> > > > > throw new SAXException("Error Validating the content XML.");
> > > > > } finally {
> > > > > long endTime = System.currentTimeMillis();
> > > > > System.out.println("Total time of
> > > > > SAXValidate:"+(endTime-startTime));
> > > > > }
> > > > > }//SAXValidate
> > > > >
> > > > > And SchemaEntityResolver looks as follows:
> > > > >
> > > > > public class SchemaEntityResolver implements EntityResolver {
> > > > > InputSource source = null;
> > > > > public SchemaEntityResolver(String schemaString) {
> > > > > source = new InputSource(new StringReader(schemaString));
> > > > > }
> > > > >
> > > > > public InputSource resolveEntity(String publicID, String
> systemID)
> > > > > throws SAXException {
> > > > > return source;
> > > > > }
> > > > > }
> > > > >
> > > > > When I try to validate an xml with the schema string, I get the
> > > following
> > > > > error:
> > > > > Line: 1
> > > > > URI: null
> > > > > Message: cvc-elt.1: Cannot find the declaration of element
> > 'content'.
> > > > >
> > > > >
> > > > > Am I doing it wrong? If so please tell me how to use the
> > entityresolver.
> > > > >
> > > > > Praveen
> > > > >
> > > > >
> > > > > ----- Original Message -----
> > > > > From: <sandygao@(protected)>
> > > > > To: <xerces-j-user@(protected)>
> > > > > Sent: Monday, January 20, 2003 10:18 AM
> > > > > Subject: Re: XML validation using xml schema string
> > > > >
> > > > >
> > > > > > Write an entity resolver
> > > > > >
> > > > >
> > > >
> > >
> >
> (http://xml.apache.org/xerces2-j/javadocs/api/org/xml/sax/EntityResolver.htm
> > > > > l),
> > > > > >
> > > > > > and returned an input source with a StringReader when the schema
> > > > document
> > > > > > is asked.
> > > > > >
> > > > > > HTH,
> > > > > > Sandy Gao
> > > > > > Software Developer, IBM Canada
> > > > > > (1-905) 413-3255
> > > > > > sandygao@(protected)
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > "Praveen Peddi"
> > > > > > <ppeddi@(protected) To:
> > > > > <xerces-j-user@(protected)>
> > > > > > dia.com> cc:
> > > > > > Subject: Re: XML
> > > > > validation using xml schema string
> > > > > > 01/20/2003 09:16
> > > > > > AM
> > > > > > Please respond to
> > > > > > xerces-j-user
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > Hi all,
> > > > > > Last week I sent an email regarding the xml validation against the
> > > > schema,
> > > > > > but didn't get any reply. Please reply if any one has answer to my
> > > > > > question. Is it possible to validate an xml document using a
> schema
> > > > > > document (not the schema url) that is present with in the
> > application.
> > > > If
> > > > > > its not possible, whats the best way of achieving it. Please read
> my
> > > > > > previous email below.
> > > > > >
> > > > > > Thanks
> > > > > > Praveen
> > > > > >
> > > > > > Hi all,
> > > > > > I want to validate an xml document with an existing schema. I
> know
> > > > there
> > > > > > is a code to do it when the schema is present as a URL. BUt in my
> > > case
> > > > > > schema is present with in the application memory (since it is
> > stored
> > > in
> > > > > > the database) and that is not the url or on the hard disk.
> > > > > > I have the following method which validates only when the schema
> is
> > > > > > present externally. Note that the argument Schema is a URL:
> > > > > > public static void DOMValidate(String XMLfile, String Schema){
> > > > > > long startTime = System.currentTimeMillis();
> > > > > >
> > > > > > // Instantiate the DOM parser.
> > > > > > DOMParser parser = new DOMParser();
> > > > > >
> > > > > > // set the features
> > > > > > try{
> > > > > >
> > parser.setFeature("http://xml.org/sax/features/namespaces
> > > > > > ",true);
> > > > > >
> > > parser.setFeature("http://xml.org/sax/features/validation",
> > > > > > true);
> > > > > > parser.setFeature("
> > > > > > http://apache.org/xml/features/validation/schema",true);
> > > > > > parser.setFeature("
> > > > > >
> > > http://apache.org/xml/features/validation/schema-full-checking",true);
> > > > > > // convert the xml file name to a URL
> > > > > > String SystemId = null;
> > > > > > try{
> > > > > > SystemId = new
> > File(Schema).toURL().toExternalForm();
> > > > > > } catch(java.net.MalformedURLException ex){
> > > > > > //ex.printStackTrace();
> > > > > > log.error(ex);
> > > > > > }
> > > > > > parser.setProperty("
> > > > > >
> > > > >
> > >
> http://apache.org/xml/properties/schema/external-noNamespaceSchemaLocation
> > > > > > ",SystemId);
> > > > > > // myErrorHandler is a descendant of ErrorHandler, it
> > > > should
> > > > > > be set here to be able to catch parse errors
> > > > > > parser.setErrorHandler(new SchemaErrorHandler());
> > > > > >
> > > > > > } catch (SAXNotSupportedException ex){
> > > > > > System.out.println("SAXNotSupportedException
> > Exception");
> > > > > > } catch (SAXNotRecognizedException ex){
> > > > > > System.out.println("SAXNotRecognizedException
> > > > > Exception");
> > > > > > }
> > > > > >
> > > > > > // parse the xml file, the errorhandler class has
> > callbacks,
> > > > > > // so those will be called automatically there is a parse
> > > error
> > > > > > try{
> > > > > > parser.parse(new
> > > > File(XMLfile).toURL().toExternalForm());
> > > > > > //System.out.println("Parsed Successfully by DOM
> > > > > Parser");
> > > > > > } catch (org.xml.sax.SAXException ex){
> > > > > > //System.out.println("SAXException Exception");
> > > > > > //ex.printStackTrace();
> > > > > > log.error(ex);
> > > > > > } catch (java.io.IOException ex){
> > > > > > System.out.println("IOException Exception");
> > > > > > } finally {
> > > > > > long endTime = System.currentTimeMillis();
> > > > > > //System.out.println("Total time of DOMValidate:"
> > > > > > +(endTime-startTime));
> > > > > >
> > > > > > }
> > > > > >
> > > > > > }
> > > > > >
> > > > > > How can I do the validation if the Schema is the actual schema
> > string
> > > > not
> > > > > > the url. This looks like a common problem. I assume that its not
> > > > > universal
> > > > > > that schema is not always stored externally.
> > > > > >
> > > > > > Any suggestions are appreciated.
> > > > > >
> > > > > > Praveen
> > > > > >
> > > > > >
> > > > > >
> > > > >
> > > ---------------------------------------------------------------------
> > > > > > To unsubscribe, e-mail: xerces-j-user-unsubscribe@(protected)
> > > > > > For additional commands, e-mail: xerces-j-user-help@(protected)
> > > > > >
> > > > > >
> > > > >
> > > > >
> > > >
> > ---------------------------------------------------------------------
> > > > > To unsubscribe, e-mail: xerces-j-user-unsubscribe@(protected)
> > > > > For additional commands, e-mail: xerces-j-user-help@(protected)
> > > > >
> > > > >
> > > >
> > > >
> > > > ---------------------------------------------------------------------
> > > > To unsubscribe, e-mail: xerces-j-user-unsubscribe@(protected)
> > > > For additional commands, e-mail: xerces-j-user-help@(protected)
> > > >
> > > >
> > >
> > >
> > > ---------------------------------------------------------------------
> > > To unsubscribe, e-mail: xerces-j-user-unsubscribe@(protected)
> > > For additional commands, e-mail: xerces-j-user-help@(protected)
> > >
> >
> >
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> >
> >
>
>
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>
>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<META content="MSHTML 6.00.2800.1106" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY>
<DIV><FONT face=Arial size=2>Hi Jeff,</FONT></DIV>
<DIV><FONT face=Arial size=2>I did exactly what you told and it doesn't seem to
work. Please look at the following code and see if I am doing anything
wrong.</FONT></DIV>
<DIV><FONT face=Arial size=2>The error I get is:</FONT></DIV>
<DIV><FONT color=#ff0000>**Parsing Error**<BR> Line:
1<BR> URI: null<BR> Message: cvc-elt.1:
Cannot find the declaration of element 'content'.<BR>SAXException
Exception<BR>Total time of SAXValidate:3546<BR>org.xml.sax.SAXException: Error
Validating the content XML.<BR> at
XMLValidator.validateXmlAgainstLocalSchema(XMLValidator.java:105)</FONT></DIV>
<DIV><FONT color=#ff0000></FONT> </DIV>
<DIV><FONT face=Arial size=2>My Entity Resolver is:</FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2>public class SchemaEntityResolver
implements EntityResolver {<BR> <BR> InputSource source;<BR>
EntityResolver defaultResolver;<BR> String fakeLocationURI;</FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2> <BR> public
SchemaEntityResolver(EntityResolver defaultResolver, String
mySchemaString,<BR>String fakeLocationURI) {<BR>
source = new InputSource(new
StringReader(mySchemaString));<BR>
this.defaultResolver = defaultResolver;<BR>
this.fakeLocationURI = fakeLocationURI;<BR> }</FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2> <BR> public
InputSource resolveEntity(String pubId, String
sysId)<BR> throws IOException,
SAXException {<BR> if ((pubId != null &&
pubId.equals(fakeLocationURI))<BR>
|| (sysId != null && sysId.equals(fakeLocationURI)))
{<BR> return
source;<BR> }<BR> return
defaultResolver.resolveEntity(pubId, sysId);</FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2>
}<BR> }</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>And My validate method is as follows:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2>public static void
validateXmlAgainstLocalSchema(String XMLString, String schemaString) throws
SAXException{<BR> long startTime =
System.currentTimeMillis();<BR>
System.out.println("Files: XML:" + XMLString + " XSD:" +
schemaString);<BR>
XMLReader parser =
null;<BR> //
Instantiate a
parser<BR>
try{<BR>  
;
parser =
XMLReaderFactory.createXMLReader("org.apache.xerces.parsers.SAXParser");<BR>
} catch (org.xml.sax.SAXException
ex){<BR>  
;
System.out.println("SAXException Exception");<BR> throw
new SAXException("Error Obtaining the
parser.");<BR>  
;
}</FONT></DIV>
<DIV><FONT color=#0000ff></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff
size=2>
try{</FONT></DIV>
<DIV><FONT color=#0000ff></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff
size=2>
// Register the error
handler<BR>
parser.setErrorHandler(new SchemaErrorHandler());</FONT></DIV>
<DIV><FONT color=#0000ff></FONT> </DIV>
<DIV><FONT face=Arial size=2><FONT
color=#0000ff>  
;
//parser.setFeature("</FONT><A
href="http://apache.org/xml/features/continue-after-fatal-error">http://apache
.org/xml/features/continue-after-fatal-error</A><FONT
color=#0000ff>",
true);<BR>
// Turn on
validation<BR>  
;
parser.setFeature("</FONT><A
href='http://xml.org/sax/features/namespaces",true'>http://xml.org/sax/features
/namespaces",true</A><FONT
color=#0000ff>);<BR>  
;
parser.setFeature("</FONT><A
href="http://xml.org/sax/features/validation">http://xml.org/sax/features
/validation</A><FONT
color=#0000ff>",
true);<BR>
parser.setFeature("</FONT><A
href='http://apache.org/xml/features/validation/schema",true'>http://apache.org
/xml/features/validation/schema",true</A><FONT
color=#0000ff>);<BR>  
;
parser.setFeature("</FONT><A
href='http://apache.org/xml/features/validation/schema-full-checking",true'
>http://apache.org/xml/features/validation/schema-full-checking",true</A><FONT
color=#0000ff>);<BR>  
;
//parser.setProperty("</FONT><A
href='http://apache.org/xml/properties/schema/external
-noNamespaceSchemaLocation",Schema'>http://apache.org/xml/properties/schema
/external-noNamespaceSchemaLocation",Schema</A><FONT
color=#0000ff>);<BR> parser.setEntityResolver(new
SchemaEntityResolver(parser.getEntityResolver(), schemaString, "</FONT><A
href="http://www.contextmedia.com">http://www.contextmedia.com</A><FONT
color=#0000ff>"));</FONT></FONT></DIV>
<DIV><FONT color=#0000ff></FONT> </DIV><FONT face=Arial size=2>
<DIV><BR><FONT
color=#0000ff>  
;
} catch (org.xml.sax.SAXNotRecognizedException
ex){<BR> ex.printStackTrace();<BR>
System.out.println("SAXNotRecognizedException
Exception"); <BR>
} catch (org.xml.sax.SAXNotSupportedException
ex){<BR> ex.printStackTrace();<BR>
System.out.println("SAXNotSupportedException
Exception");<BR>
}</FONT></DIV>
<DIV><FONT color=#0000ff></FONT> </DIV>
<DIV><FONT
color=#0000ff>  
;
// Parse the
document<BR>
try{<BR>  
;
//String XMLSystemId = new
File(XMLString).toURL().toExternalForm();<BR>
parser.parse(new InputSource(new
StringReader(XMLString)));<BR> //parser.parse
(XMLSystemId);<BR>
System.out.println("Parsed Successfully by SAX
Parser");<BR>
} catch (org.xml.sax.SAXException
ex){<BR>  
;
System.out.println("SAXException Exception");<BR> throw
new SAXException("Error Validating the content
XML.");<BR> }
catch (java.io.IOException
ex){<BR>  
;
System.out.println("IOException Exception");<BR> throw
new SAXException("Error Validating the content
XML.");<BR> }
finally {<BR> long endTime =
System.currentTimeMillis();<BR>
System.out.println("Total time of
SAXValidate:"+(endTime-startTime)); <BR> }<BR>  
;
}</FONT></DIV>
<DIV></FONT> </DIV>
<DIV><FONT face=Arial size=2>----- Original Message ----- </FONT></DIV>
<DIV><FONT face=Arial size=2>From: "Jeff Greif" <</FONT><A
href="mailto:jgreif@(protected)"><FONT face=Arial
size=2>jgreif@(protected)</FONT></A><FONT face=Arial
size=2>></FONT></DIV>
<DIV><FONT face=Arial size=2>To: <</FONT><A
href="mailto:xerces-j-user@(protected)"><FONT face=Arial
size=2>xerces-j-user@(protected)</FONT></A><FONT face=Arial
size=2>></FONT></DIV>
<DIV><FONT face=Arial size=2>Sent: Thursday, January 23, 2003 3:07
PM</FONT></DIV>
<DIV><FONT face=Arial size=2>Subject: Re: XML validation using xml schema
string</FONT></DIV>
<DIV><FONT face=Arial><BR><FONT size=2></FONT></FONT></DIV><FONT face=Arial
size=2>> Something like this (just typed into mail message, neither compiled
nor<BR>> tested).<BR>> <BR>> in main:<BR>> <BR>>
DomParser parser = new DomParser();<BR>>
parser.setEntityResolver(new<BR>>
MyEntityResolver(parser.getEntityResolver(),<BR>> <BR>> mySchemaString,
myfakeSchemaLocationURI));<BR>> <BR>> class MyEntityResolver {<BR>>
InputSource source;<BR>> EntityResolver
defaultResolver;<BR>> String fakeLocationURI;<BR>>
public MyEntityResolver(EntityResolver default, String mySchemaString,<BR>>
String fakeLocationURI) {<BR>> source = new
InputSource(new StringReader(mySchemaString));<BR>>
defaultResolver = default;<BR>>
this.fakeLocationURI =
fakeLocationURI;<BR>> }<BR>> public InputSource
resolveEntity(String pubId, String sysId) {<BR>>
if ((pubId != null &&
pubId.equals(fakeLocationURI))<BR>>
|| (sysId != null
&& sysId.equals(fakeLocationURI))) {<BR>>
return source;<BR>>
}<BR>> return
defaultResolver.resolveEntity(pubId, sysId);<BR>> }<BR>> <BR>>
}<BR>> <BR>> Jeff<BR>> ----- Original Message -----<BR>> From:
"Praveen Peddi" <</FONT><A href="mailto:ppeddi@(protected)"><FONT
face=Arial size=2>ppeddi@(protected)</FONT></A><FONT face=Arial
size=2>><BR>> To: <</FONT><A
href="mailto:xerces-j-user@(protected)"><FONT face=Arial
size=2>xerces-j-user@(protected)</FONT></A><FONT face=Arial
size=2>><BR>> Sent: Thursday, January 23, 2003 10:51 AM<BR>> Subject:
Re: XML validation using xml schema string<BR>> <BR>> <BR>> >
Jeff,<BR>> > I think I didn't get you completely.<BR>> ><BR>>
> Could you please write a sample code or modify my code below so that I
can<BR>> > understand what you are syaing.<BR>> ><BR>> >
Thanks<BR>> > Praveen<BR>> > ----- Original Message -----<BR>>
> From: "Jeff Greif" <</FONT><A
href="mailto:jgreif@(protected)"><FONT face=Arial
size=2>jgreif@(protected)</FONT></A><FONT face=Arial
size=2>><BR>> > To: <</FONT><A
href="mailto:xerces-j-user@(protected)"><FONT face=Arial
size=2>xerces-j-user@(protected)</FONT></A><FONT face=Arial
size=2>><BR>> > Sent: Thursday, January 23, 2003 11:28 AM<BR>> >
Subject: Re: XML validation using xml schema string<BR>> ><BR>>
><BR>> > > I'm not able to give information correct in detail, but
here is an<BR>> outline<BR>> > > of what must happen:<BR>> >
><BR>> > > The entity resolver is called with a namespace URI or a
schema location<BR>> as<BR>> > > an argument, I think. In the
course of parsing your instance document<BR>> > (.xml<BR>> > >
file), it will be called to process your schema's namespace and possibly<BR>>
;
> > other namespaces (e.g. the XMLSchema-instance namespace)
mentioned<BR>> > therein.<BR>> > > Probably you should get the
default entity resolver for the parser<BR>> (which<BR>> > > knows
how to handle some things, presumably), and create your own entity<BR>> >
> resolver holding that one as a member. Then when asked for a
particular<BR>> > > schema by its namespace or location, if it's your
schema, return the<BR>> input<BR>> > > source as your code below
does, otherwise, pass the request to the<BR>> member<BR>> > >
resolver which knows better than you what to do.<BR>> > ><BR>> >
> Jeff<BR>> > ><BR>> > > ----- Original Message
-----<BR>> > > From: "Praveen Peddi" <</FONT><A
href="mailto:ppeddi@(protected)"><FONT face=Arial
size=2>ppeddi@(protected)</FONT></A><FONT face=Arial size=2>><BR>>
> > To: <</FONT><A href="mailto:xerces-j-user@(protected)"><FONT
face=Arial size=2>xerces-j-user@(protected)</FONT></A><FONT face=Arial
size=2>><BR>> > > Sent: Thursday, January 23, 2003 7:44 AM<BR>>
> > Subject: Re: XML validation using xml schema string<BR>> >
><BR>> > ><BR>> > > > I posted a question yesterday
about the validation of XML against the<BR>> > > local<BR>> >
> > schema (in memory). Could anyone please look at the message below
and<BR>> > > reply<BR>> > > > if you know the
answer.<BR>> > > ><BR>> > > > Thanks in Advance.<BR>>
;
> > ><BR>> > > > Praveen<BR>> > > > -----
Original Message -----<BR>> > > > From: "Praveen Peddi"
<</FONT><A href="mailto:ppeddi@(protected)"><FONT face=Arial
size=2>ppeddi@(protected)</FONT></A><FONT face=Arial size=2>><BR>>
> > > To: <</FONT><A href="mailto:sandygao@(protected)"><FONT
face=Arial size=2>sandygao@(protected)</FONT></A><FONT face=Arial size=2>>;
<</FONT><A href="mailto:xerces-j-user@(protected)"><FONT face=Arial
size=2>xerces-j-user@(protected)</FONT></A><FONT face=Arial
size=2>><BR>> > > > Sent: Wednesday, January 22, 2003 1:35
PM<BR>> > > > Subject: Re: XML validation using xml schema
string<BR>> > > ><BR>> > > ><BR>> > > > >
;
As you said I wrote an EntityResolver but it didn't work. Could you<BR>> >
;
send<BR>> > > > me<BR>> > > > > a sample code (just
the validation code) if u already have one.<BR>> > > > ><BR>>
> > > > My validate method looks as follows:<BR>> > > >
><BR>> > > > > public static void
validateXmlAgainstLocalSchema(String XMLString,<BR>> > > String<BR>>
;
> > > > schemaString) throws SAXException{<BR>> > > >
> long startTime = System.currentTimeMillis();<BR>> >
;
> >
>
System.out.println("Files: XML:" + XMLString + " XSD:" +<BR>> > > >
> schemaString);<BR>> > > >
>
XMLReader parser = null;<BR>> > > >
> //
Instantiate a parser<BR>> > > >
>
try{<BR>> > > >
>
parser =<BR>> > > > ><BR>> >
XMLReaderFactory.createXMLReader("org.apache.xerces.parsers.SAXParser");<BR>>
;
> > >
> }
catch (org.xml.sax.SAXException ex){<BR>> > > >
>
System.out.println("SAXException Exception");<BR>> > > >
> throw new SAXException("Error Obtaining the
parser.");<BR>> > > >
>
}<BR>> > > > ><BR>> > > >
>
try{<BR>> > > > ><BR>> > > >
>
// Register the error handler<BR>> > > >
>
parser.setErrorHandler(new SchemaErrorHandler());<BR>> > > >
><BR>> > > > ><BR>> > > > ><BR>> > >
><BR>> > ><BR>> ><BR>> //parser.setFeature("</FONT><A
href="http://apache.org/xml/features/continue-after-fatal-err"><FONT face=Arial
size=2>http://apache.org/xml/features/continue-after-fatal-err</FONT></A><BR>
<FONT
face=Arial size=2>> > > > > or", true);<BR>> > > >
>
// Turn on validation<BR>> > > > ><BR>> > > > >
parser.setFeature("</FONT><A
href='http://xml.org/sax/features/namespaces",true'><FONT face=Arial
size=2>http://xml.org/sax/features/namespaces",true</FONT></A><FONT face=Arial
size=2>);<BR>> > > > ><BR>> > > >
parser.setFeature("</FONT><A href="http://xml.org/sax/features/validation">
<FONT
face=Arial size=2>http://xml.org/sax/features/validation</FONT></A><FONT
face=Arial size=2>",<BR>> > > > > true);<BR>> > > >
><BR>> > > > ><BR>> > > ><BR>> >
><BR>> ><BR>> parser.setFeature("</FONT><A
href='http://apache.org/xml/features/validation/schema",true'><FONT face=Arial
size=2>http://apache.org/xml/features/validation/schema",true</FONT></A><FONT
face=Arial size=2>);<BR>> > > > ><BR>> > > >
><BR>> > > ><BR>> > ><BR>> ><BR>>
parser.setFeature("</FONT><A
href="http://apache.org/xml/features/validation/schema-full-che"><FONT
face=Arial
size=2>http://apache.org/xml/features/validation/schema-full-che</FONT></A><BR>
<FONT
face=Arial size=2>> > > > > cking",true);<BR>> > > >
><BR>> > > > ><BR>> > > ><BR>> >
><BR>> ><BR>> //parser.setProperty("</FONT><A
href="http://apache.org/xml/properties/schema/external-noNam"><FONT face=Arial
size=2>http://apache.org/xml/properties/schema/external-noNam</FONT></A><BR>
<FONT
face=Arial size=2>> > > > >
espaceSchemaLocation",Schema);<BR>> > > >
> parser.setEntityResolver(new<BR>>
SchemaEntityResolver(schemaString));<BR>> > > > ><BR>> >
> > ><BR>> > > >
> }
catch (org.xml.sax.SAXNotRecognizedException ex){<BR>> > > >
> ex.printStackTrace();<BR>> > > >
>
System.out.println("SAXNotRecognizedException<BR>> > > > >
Exception");<BR>> > > >
> }
catch (org.xml.sax.SAXNotSupportedException ex){<BR>> > > >
> ex.printStackTrace();<BR>> > > >
>
System.out.println("SAXNotSupportedException<BR>> > > > >
Exception");<BR>> > > >
>
}<BR>> > > > ><BR>> > > >
> //
Parse the document<BR>> > > >
>
try{<BR>> > > >
>
//String XMLSystemId = new<BR>> > > > >
File(XMLString).toURL().toExternalForm();<BR>> > > >
>
parser.parse(new InputSource(new<BR>> > > >
StringReader(XMLString)));<BR>> > > > >
//parser.parse(XMLSystemId);<BR>> > > >
>
System.out.println("Parsed Successfully by SAX<BR>> > Parser");<BR>>
> > >
> }
catch (org.xml.sax.SAXException ex){<BR>> > > >
>
System.out.println("SAXException Exception");<BR>> > > >
> throw new SAXException("Error Validating the
content XML.");<BR>> > > >
> }
catch (java.io.IOException ex){<BR>> > > >
>
System.out.println("IOException Exception");<BR>> > > >
> throw new SAXException("Error Validating the
content XML.");<BR>> > > >
> }
finally {<BR>> > > > > long endTime =
System.currentTimeMillis();<BR>> > > >
>
System.out.println("Total time of<BR>> > > > >
SAXValidate:"+(endTime-startTime));<BR>> > > >
> }<BR>> > > > >
}//SAXValidate<BR>> > > > ><BR>> > > > > And
SchemaEntityResolver looks as follows:<BR>> > > > ><BR>> >
> > > public class SchemaEntityResolver implements EntityResolver
{<BR>> > > > > InputSource source = null;<BR>> > >
;
> > public SchemaEntityResolver(String schemaString) {<BR>> >
> > > source = new InputSource(new
StringReader(schemaString));<BR>> > > > > }<BR>> >
> > ><BR>> > > > > public
InputSource resolveEntity(String publicID, String<BR>> systemID)<BR>> >
;
> > > throws
SAXException {<BR>> > > >
>
return source;<BR>> > > > > }<BR>>
> > > > }<BR>> > > > ><BR>> > > > >
When I try to validate an xml with the schema string, I get the<BR>> >
> following<BR>> > > > > error:<BR>> > > > >
Line: 1<BR>> > > > >
URI: null<BR>> > > > >
Message: cvc-elt.1: Cannot find the declaration of element<BR>> >
'content'.<BR>> > > > ><BR>> > > > ><BR>> >
> > > Am I doing it wrong? If so please tell me how to use the<BR>>
> entityresolver.<BR>> > > > ><BR>> > > > >
Praveen<BR>> > > > ><BR>> > > > ><BR>> >
> > > ----- Original Message -----<BR>> > > > > From:
<</FONT><A href="mailto:sandygao@(protected)"><FONT face=Arial
size=2>sandygao@(protected)</FONT></A><FONT face=Arial size=2>><BR>> >
> > > To: <</FONT><A
href="mailto:xerces-j-user@(protected)"><FONT face=Arial
size=2>xerces-j-user@(protected)</FONT></A><FONT face=Arial
size=2>><BR>> > > > > Sent: Monday, January 20, 2003 10:18
AM<BR>> > > > > Subject: Re: XML validation using xml schema
string<BR>> > > > ><BR>> > > > ><BR>> > >
;
> > > Write an entity resolver<BR>> > > > > ><BR>>
;
> > > ><BR>> > > ><BR>> > ><BR>>
><BR>> (</FONT><A
href="http://xml.apache.org/xerces2-j/javadocs/api/org/xml/sax/EntityResolver
.htm"><FONT
face=Arial
size=2>http://xml.apache.org/xerces2-j/javadocs/api/org/xml/sax/EntityResolver
.htm</FONT></A><BR><FONT
face=Arial size=2>> > > > > l),<BR>> > > > >
><BR>> > > > > > and returned an input source with a
StringReader when the schema<BR>> > > > document<BR>> > >
> > > is asked.<BR>> > > > > ><BR>> > > >
;
> > HTH,<BR>> > > > > > Sandy Gao<BR>> > > >
;
> > Software Developer, IBM Canada<BR>> > > > > >
(1-905) 413-3255<BR>> > > > > > </FONT><A
href="mailto:sandygao@(protected)"><FONT face=Arial
size=2>sandygao@(protected)</FONT></A><BR><FONT face=Arial size=2>> > >
> > ><BR>> > > > > ><BR>> > > > >
><BR>> > > > > ><BR>> > > > >
>
"Praveen Peddi"<BR>> > > > >
>
<</FONT><A href="mailto:ppeddi@(protected)"><FONT face=Arial
size=2>ppeddi@(protected)</FONT></A><FONT face=Arial
size=2> To:<BR>> > > >
> <</FONT><A href="mailto:xerces-j-user@(protected)"><FONT face=Arial
size=2>xerces-j-user@(protected)</FONT></A><FONT face=Arial
size=2>><BR>> > > > >
>
dia.com>
cc:<BR>> > > > >
>
Subject: Re: XML<BR>> > > > > validation using xml schema
string<BR>> > > > >
>
01/20/2003 09:16<BR>> > > > >
>
AM<BR>> > > > >
>
Please respond to<BR>> > > > >
>
xerces-j-user<BR>> > > > > ><BR>> > > > >
><BR>> > > > > ><BR>> > > > > ><BR>>
> > > > ><BR>> > > > > > Hi all,<BR>> >
> > > > Last week I sent an email regarding the xml validation
against the<BR>> > > > schema,<BR>> > > > > > but
didn't get any reply. Please reply if any one has answer to my<BR>> > >
;
> > > question. Is it possible to validate an xml document using
a<BR>> schema<BR>> > > > > > document (not the schema url)
that is present with in the<BR>> > application.<BR>> > > >
If<BR>> > > > > > its not possible, whats the best way of
achieving it. Please read<BR>> my<BR>> > > > > > previous
email below.<BR>> > > > > ><BR>> > > > > >
Thanks<BR>> > > > > > Praveen<BR>> > > > >
><BR>> > > > > > Hi all,<BR>> > > > >
> I want to validate an xml document with an existing schema. I<BR>>
;
know<BR>> > > > there<BR>> > > > > > is a
code to do it when the schema is present as a URL. BUt in my<BR>> > >
case<BR>> > > > > > schema is present with in the
application memory (since it is<BR>> > stored<BR>> > > in<BR>>
;
> > > > > the database) and that is not the url or on the
hard disk.<BR>> > > > > > I have the following method
which validates only when the schema<BR>> is<BR>> > > > >
> present externally. Note that the argument Schema is a URL:<BR>>
> > > > > public static void DOMValidate(String XMLfile,
String Schema){<BR>> > > > > > long
startTime = System.currentTimeMillis();<BR>> > > > > ><BR>>
;
> > > > >
// Instantiate the DOM parser.<BR>> > > > >
> DOMParser parser =
new DOMParser();<BR>> > > > > ><BR>> > > > >
> // set the
features<BR>> > > > >
> try{<BR>> >
> > > ><BR>> > parser.setFeature("</FONT><A
href="http://xml.org/sax/features/namespaces"><FONT face=Arial
size=2>http://xml.org/sax/features/namespaces</FONT></A><BR><FONT face=Arial
size=2>> > > > > > ",true);<BR>> > > > >
><BR>> > > parser.setFeature("</FONT><A
href="http://xml.org/sax/features/validation"><FONT face=Arial
size=2>http://xml.org/sax/features/validation</FONT></A><FONT face=Arial
size=2>",<BR>> > > > > > true);<BR>> > > >
>
>
parser.setFeature("<BR>> > > > > > </FONT><A
href='http://apache.org/xml/features/validation/schema",true'><FONT face=Arial
size=2>http://apache.org/xml/features/validation/schema",true</FONT></A><FONT
face=Arial size=2>);<BR>> > > > >
>
parser.setFeature("<BR>> > > > > ><BR>> > > </FONT>
<A
href='http://apache.org/xml/features/validation/schema-full-checking",true'>
<FONT
face=Arial
size=2>http://apache.org/xml/features/validation/schema-full-checking",true<
/FONT></A><FONT
face=Arial size=2>);<BR>> > > > >
>
// convert the xml file name to a URL<BR>> > > > >
>
String SystemId = null;<BR>> > > > >
>
try{<BR>> > > > >
>
SystemId = new<BR>> > File(Schema).toURL().toExternalForm();<BR>> >
> > >
>
} catch(java.net.MalformedURLException ex){<BR>> > > > >
>
//ex.printStackTrace();<BR>> > > > >
>
log.error(ex);<BR>> > > > >
>
}<BR>> > > > >
>
parser.setProperty("<BR>> > > > > ><BR>> > > >
><BR>> > ><BR>> </FONT><A
href="http://apache.org/xml/properties/schema/external
-noNamespaceSchemaLocation"><FONT
face=Arial
size=2>http://apache.org/xml/properties/schema/external
-noNamespaceSchemaLocation</FONT></A><BR><FONT
face=Arial size=2>> > > > > > ",SystemId);<BR>> >
> > >
>
// myErrorHandler is a descendant of ErrorHandler, it<BR>> > > >
should<BR>> > > > > > be set here to be able to catch
parse errors<BR>> > > > >
>
parser.setErrorHandler(new SchemaErrorHandler());<BR>> > > > >
><BR>> > > > >
> } catch
(SAXNotSupportedException ex){<BR>> > > > >
>
System.out.println("SAXNotSupportedException<BR>> > Exception");<BR>>
> > > > >
}
catch (SAXNotRecognizedException ex){<BR>> > > > >
>
System.out.println("SAXNotRecognizedException<BR>> > > > >
Exception");<BR>> > > > >
> }<BR>> > >
> > ><BR>> > > > >
> // parse the xml
file, the errorhandler class has<BR>> > callbacks,<BR>> > > >
> > // so those
will
be called automatically there is a parse<BR>> > > error<BR>> >
> > > >
try{<BR>> > > > >
>
parser.parse(new<BR>> > > >
File(XMLfile).toURL().toExternalForm());<BR>> > > > >
>
//System.out.println("Parsed Successfully by DOM<BR>> > > > >
Parser");<BR>> > > > >
> } catch
(org.xml.sax.SAXException ex){<BR>> > > > >
>
//System.out.println("SAXException Exception");<BR>> > > > >
>
//ex.printStackTrace();<BR>> > > > >
>
log.error(ex);<BR>> > > > >
> } catch
(java.io.IOException ex){<BR>> > > > >
>
System.out.println("IOException Exception");<BR>> > > > >
> } finally {<BR>> > > > >
> long endTime = System.currentTimeMillis();<BR>>
> > > >
>
//System.out.println("Total time of DOMValidate:"<BR>> > > > >
> +(endTime-startTime));<BR>> > > > > ><BR>> >
> > > > }<BR>> > > > > ><BR>> >
> > > > }<BR>> > > > >
><BR>> > > > > > How can I do the validation if the
Schema is the actual schema<BR>> > string<BR>> > > >
not<BR>> > > > > > the url. This looks like a common
problem. I assume that its not<BR>> > > > > universal<BR>>
> > > > > that schema is not always stored
externally.<BR>> > > > > ><BR>> > > > >
> Any suggestions are appreciated.<BR>> > > > >
><BR>> > > > > > Praveen<BR>> > > > >
><BR>> > > > > ><BR>> > > > > ><BR>>
> > > ><BR>> > >
---------------------------------------------------------------------<BR>>
> > > > > To unsubscribe, e-mail: </FONT><A
href="mailto:xerces-j-user-unsubscribe@(protected)"><FONT face=Arial
size=2>xerces-j-user-unsubscribe@(protected)</FONT></A><BR><FONT face=Arial
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href="mailto:xerces-j-user-help@(protected)"><FONT face=Arial
size=2>xerces-j-user-help@(protected)</FONT></A><BR><FONT face=Arial
size=2>> > > > > ><BR>> > > > > ><BR>>
> > > ><BR>> > > > ><BR>> > > ><BR>>
>
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> > > > To unsubscribe, e-mail: </FONT><A
href="mailto:xerces-j-user-unsubscribe@(protected)"><FONT face=Arial
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size=2>xerces-j-user-help@(protected)</FONT></A><BR><FONT face=Arial
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><BR>> > > ><BR>> > > >
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href="mailto:xerces-j-user-unsubscribe@(protected)"><FONT face=Arial
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size=2>> > > ><BR>> > > ><BR>> > ><BR>> >
;
><BR>> > >
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