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hi, i have this schema (see below). almost all of my data in attributes. so
i would like to specify that most elements may *not* contain any text (i.e.
they may have choldren and/or attributes only).
is there a way to do this in xmlschema?
thanks
<?xml version="1.0" encoding="UTF-8"?>
<!-- edited with XMLSPY v5 rel. 3 (http://www.xmlspy.com) by Robert W.
Murray (nanosoft) -->
<!--$Id: input.xsd,v 1.12 2003/03/29 03:59:12 ray Exp ray $-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified" attributeFormDefault="unqualified">
<xs:element name="input">
<xs:annotation>
<xs:documentation>Input data for feb1
program</xs:documentation>
</xs:annotation>
<xs:complexType>
<xs:sequence>
<xs:element name="Nodes">
<xs:complexType>
<xs:sequence>
<xs:element
name="Node" maxOccurs="5">
<xs:complexType>
<xs:sequence>
<xs:element
name="Point">
<xs:complexType>
<xs:attribute
name="x" type="xs:double" use="required"/>
<xs:attribute
name="y" type="xs:double" use="required"/>
</xs:complexType>
</xs:element>
<xs:element
name="Restraints">
<xs:complexType>
<xs:attribute
name="Tx" type="xs:boolean" use="required"/>
<xs:attribute
name="Ty" type="xs:boolean" use="required"/>
<xs:attribute
name="Tz" type="xs:boolean" use="required"/>
</xs:complexType>
</xs:element>
<xs:element
name="SingleForces">
<xs:complexType>
<xs:attribute
name="Fx" type="xs:double" use="required"/>
<xs:attribute
name="Fy" type="xs:double" use="required"/>
<xs:attribute
name="Mz" type="xs:double" use="required"/>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Connections">
<xs:complexType>
<xs:sequence>
<xs:element
name="Connection" maxOccurs="4">
<xs:complexType>
<xs:sequence>
<xs:element
name="Properties">
<xs:complexType>
<xs:attribute
name="Ax" type="xs:double" use="required"/>
<xs:attribute
name="Iz" type="xs:double" use="required"/>
<xs:attribute
name="E" type="xs:double" use="required"/>
<xs:attribute
name="G" type="xs:double" use="required"/>
</xs:complexType>
</xs:element>
<xs:element
name="LineForces">
<xs:complexType>
<xs:attribute
name="q" type="xs:double" use="required"/>
<xs:attribute
name="a1" type="xs:double" use="required"/>
<xs:attribute
name="a2" type="xs:double" use="required"/>
<xs:attribute
name="a" type="xs:double" use="required"/>
</xs:complexType>
</xs:element>
<xs:element
name="SingleForces">
<xs:complexType>
<xs:attribute
name="Fx" type="xs:double" use="required"/>
<xs:attribute
name="Fy" type="xs:double" use="required"/>
<xs:attribute
name="Mz" type="xs:double" use="required"/>
<xs:attribute
name="a" type="xs:double" use="required"/>
</xs:complexType>
</xs:element>
<xs:element
name="ElasticOrRigid">
<xs:complexType>
<xs:attribute
name="elastic" type="xs:boolean" use="required"/>
<xs:attribute
name="rigid" type="xs:boolean" use="required"/>
</xs:complexType>
</xs:element>
</xs:sequence>
<xs:attribute
name="hingedAtStart" type="xs:boolean" use="required"/>
<xs:attribute
name="from" type="xs:positiveInteger" use="required"/>
<xs:attribute
name="to" type="xs:positiveInteger" use="required"/>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>
---
ray tayek http://tayek.com/ actively seeking mentoring or telecommuting work
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