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Re: XML Schema usage submission

From: Bob Schloss <rschloss@us.ibm.com>
Date: Mon, 10 Jun 2002 16:33:18 -0400
To: nathan.crews@autodesk.com
Cc: cmsmcq@w3.org, xmlschema-dev@w3.org
Message-ID: <OFE3C518C2.A5949182-ON85256BD4.006F2C8E@us.ibm.com>

                                                                                                               
                                                                                                               
                                                                                                               


Nathan,

      I believe that your schema is not valid.

      I ran it through the IBM XML Schema Quality Checker
(available at http://www.alphaworks.ibm.com/tech/xmlsqc) and it
pointed out several problems, including 5 cases where you appear
to have an ambiguous content model.

      Here is an image of how it looks in my browser
 with the SQC output styled by a stylesheet:


      And here is the actual output from SQC:
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="file:/C:/sqc/ErrorReport.xsl"?>
<schemaAnalysis
SchemaQualityCheckerVersion="2.0.1"
    anyWarningsRequestedToBeSuppressed="false" cost="10"
    haltAtFirstError="false"
requireEachDocumentValid="false" schemaLanguageVersion="2001-05-02">
<file fileNameWithoutPath="LandXML-1.0.xsd" filename="LandXML-1.0.xsd">
<startdatetime>2002-06-10T16:06:30</startdatetime>
<error severity="1" type="2">
            <source column="26" line="1265"
                location="file:C:/sqc/LandXML-1.0.xsd"
locationWithoutPath="LandXML-1.0.xsd"/>
            <message>Ambiguous content model : the following particles
                overlap : &lt;xs:element block=&quot;&quot;
                maxOccurs=&quot;unbounded&quot; minOccurs=&quot;0&quot;
                ref=&quot;Feature&quot;/&gt; ,  &lt;xs:any
                maxOccurs=&quot;1&quot; minOccurs=&quot;1&quot;
                namespace=&quot;##any&quot;/&gt;   . </message>
</error>

<error severity="1" type="2">
            <source column="26" line="1358"
                location="file:C:/sqc/LandXML-1.0.xsd"
locationWithoutPath="LandXML-1.0.xsd"/>
            <message>Ambiguous content model : the following particles
                overlap : &lt;xs:element block=&quot;&quot;
                maxOccurs=&quot;1&quot; minOccurs=&quot;0&quot;
                ref=&quot;Start&quot;/&gt; ,  &lt;xs:any
                maxOccurs=&quot;1&quot; minOccurs=&quot;1&quot;
                namespace=&quot;##any&quot;/&gt;   . </message>
</error>

<error severity="1" type="2">
            <source column="26" line="2578"
                location="file:C:/sqc/LandXML-1.0.xsd"
locationWithoutPath="LandXML-1.0.xsd"/>
            <message>Ambiguous content model : the following particles
                overlap : &lt;xs:element block=&quot;&quot;
                maxOccurs=&quot;unbounded&quot; minOccurs=&quot;0&quot;
                ref=&quot;PVI&quot;/&gt; ,  &lt;xs:element
                block=&quot;&quot; maxOccurs=&quot;1&quot;
                minOccurs=&quot;1&quot; ref=&quot;PVI&quot;/&gt;   .
</message>
</error>

<error severity="1" type="2">
            <source column="26" line="36"
                location="file:C:/sqc/LandXML-1.0.xsd"
locationWithoutPath="LandXML-1.0.xsd"/>
 <message>Ambiguous content model : the following particles
                overlap : &lt;xs:element block=&quot;&quot;
                maxOccurs=&quot;1&quot; minOccurs=&quot;1&quot;
                ref=&quot;Units&quot;/&gt; ,  &lt;xs:any
                maxOccurs=&quot;1&quot; minOccurs=&quot;1&quot;
               namespace=&quot;##any&quot;/&gt;   . </message>
</error>

<error severity="1" type="2">
            <source column="26" line="963"
                location="file:C:/sqc/LandXML-1.0.xsd"
locationWithoutPath="LandXML-1.0.xsd"/>
            <message>Ambiguous content model : the following particles
                overlap : &lt;xs:element maxOccurs=&quot;1&quot;
                minOccurs=&quot;1&quot; name=&quot;DocFileRef&quot;
                nillable=&quot;false&quot;&gt;
                &lt;xs:complexType&gt;
                &lt;xs:attribute name=&quot;name&quot;
                use=&quot;required&quot;/&gt;         &lt;xs:attribute
                name=&quot;location&quot; type=&quot;xs:anyURI&quot;
                use=&quot;required&quot;/&gt;         &lt;xs:attribute
                name=&quot;fileType&quot; type=&quot;xs:string&quot;
                use=&quot;optional&quot;/&gt;         &lt;xs:attribute
                name=&quot;fileFormat&quot; type=&quot;xs:string&quot;
use=&quot;optional&quot;/&gt;
                &lt;/xs:complexType&gt; &lt;/xs:element&gt; ,
                &lt;xs:any maxOccurs=&quot;1&quot;
                minOccurs=&quot;1&quot; namespace=&quot;##any&quot;/&gt;
                . </message>
</error>
        <enddatetime>2002-06-10T16:07:19</enddatetime>
</file>
</schemaAnalysis>

Thanks,
Bob

Extensible Technologies
IBM Watson Research Center
Yorktown Heights, NY


nathan.crews@autodesk.com@w3.org on 06/10/2002 06:45:33 AM

Sent by:    xmlschema-dev-request@w3.org


To:    xmlschema-dev@w3.org
cc:    cmsmcq@w3.org
Subject:    XML Schema usage submission




I would like  to contribute an XML Schema, LandXML, to the usage section of
the W3  XML Schema page.


The LandXML schema  is defined, maintained and hosted by LandXML.org, an
open organization  for Land Development/Transportation Industry
organization.  LandXML models the civil engineering design data used to
create new  residential subdivisions and build new roads.

Schema file name   : LandXML-1.0.xsd
Schema namespace: http://www.landxml.org/schema/LandXML-1.0
Schema location     : http://www.landxml.org/schema/LandXML-1.0/  LandXML-
1.0.xsd

Schema  Description: LandXML is an emerging XML  data standard for civil
engineering and survey data used in the Land Development  and
Transportation Industries. LandXML facilitates open data exchange between
software applications, provides an electronic format for design data
project  submission and provides a format suitable for long term  archival.

More  Information:

LandXML has a  reasonably complex content model has evolved from a simple
XDR schema, (http://www.landxml.org/schema/landxml-0.01/LandXML-0.01.xml
), over  the past 3 years to use most of the features available in the
latest XML  Schema recommendation. The web site for the schema is http:
//www.landxml.org, where you will find  the schema, documentation, sample
files and sample applications. There is also a  list of world-wide
participants on the http://www.landxml.org/org.htm  page.

LandXML  is emerging as the XML standard for the Land Development and
Transportation  Industry by US Department of Transportation, AASHTO
(American Association of  State Highway Officials) and the Federal Highway
Administration. LandXML is also  being used and recognized internationally
by Land Information New Zealand.  LandXML also has strong support in the
software vendor community http://www.landxml.org/landxmlapps.htm.

Please let me know if any other  information is required.

Nathan  Crews
Principal Schema  Architect, www.landxml.org

Software  Researcher
Civil/Survey  Software Development
GIS Solutions  Division
Autodesk,  Inc.

nathan.crews@autodesk.com




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Received on Monday, 10 June 2002 16:34:58 GMT

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