Solved

Schema validation and order of elements

Posted on 2001-09-14
4
424 Views
Last Modified: 2013-11-19
I have a problem for validation an XML document using a schema. In fact, i've got an element that contain other elements. But the order of those elements is not important.
How should i build the schema ?
0
Comment
Question by:jguy
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
4 Comments
 
LVL 4

Expert Comment

by:sdussinger
ID: 6482818
Try using xsd:all to define your container:

<xsd:complexType name="container">
  <xsd:all>
    <xsd:element name="anelement" type="xsd:string/>
    <xsd:element name="anotherelement" type="xsd:string"/>
  </xsd:all>
</xsd:complexType>

This would allow you to write containers as follows:

<container>
  <anelement>An Element</anelement>
  <anotherelement>Another Element></anotherelement>
</container>

 -or -

<container>
  <anotherelement>Another Element</anotherelement>
  <anelement>An Element</anelement>
</container>

HTH

--Steve
0
 
LVL 4

Expert Comment

by:sdussinger
ID: 6482931
The xsd:all solution works fine as long as all of the elements in the container occur once and only once (in any order). If some of the elements in the container are optional or may occur more than once, you can use this:

 <xsd:complexType name="container">
   <xsd:sequence>
    <xsd:choice maxOccurs="unbounded">
      <xsd:element name = "anelement" type="xsd:string"/>
      <xsd:element name = "anotherelement" type="xsd:string"/>
    </xsd:choice>
  </xsd:sequence>
 </xsd:complexType>

HTH

--Steve
0
 

Author Comment

by:jguy
ID: 6483058
ok

But what happen, my complex type inherite from an other complex type. The probleme that i have is that the elements defined in de inherited complexe type must be before the new elements.

Thanks
0
 
LVL 4

Accepted Solution

by:
sdussinger earned 100 total points
ID: 6483145
<xsd:complexType name="derivedContainer">
  <xsd:complexContent>
    <xsd:extension base="baseContainer">
      <xsd:sequence>
        <xsd:choice maxOccurs="unbounded">
          <xsd:element name="anelement" type="xsd:string"/>
          <xsd:element name="anotherelement" type="xsd:string"/>
        </xsd:choice>
      </xsd:sequence>
    </xsd:extension>
  </xsd:complexContent>
</xsd:complexType>

HTH

--Steve
0

Featured Post

Secure Your WordPress Site: 5 Essential Approaches

WordPress is the web's most popular CMS, but its dominance also makes it a target for attackers. Our eBook will show you how to:

Prevent costly exploits of core and plugin vulnerabilities
Repel automated attacks
Lock down your dashboard, secure your code, and protect your users

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Preface This article introduces an authentication and authorization system for a website.  It is understood by the author and the project contributors that there is no such thing as a "one size fits all" system.  That being said, there is a certa…
JavaScript has plenty of pieces of code people often just copy/paste from somewhere but never quite fully understand. Self-Executing functions are just one good example that I'll try to demystify here.
Viewers will learn about arithmetic and Boolean expressions in Java and the logical operators used to create Boolean expressions. We will cover the symbols used for arithmetic expressions and define each logical operator and how to use them in Boole…
The viewer will learn how to create a basic form using some HTML5 and PHP for later processing. Set up your basic HTML file. Open your form tag and set the method and action attributes.: (CODE) Set up your first few inputs one for the name and …

707 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question