OffTopic: Newbie problems with Schema

[Jose Luis Zabalza <jl...@gmail.com>]

Hello everybody.

I know this is a xerces list, so, if this question is a offtopic, I am
sorry. Accept my apologizes in avance.

Question :

It is posible do complex type content dependent of a attribute value?

Next, is a example. TYPE content depend of class attribute values.

The next schema have two error.

First, VINIT element are diferent type on schema and I get one error
form Xerces Schema validator.

After, content TYPE element are "unbounded" to class attribute, so, is
valid write a "bool" class atribute with a enum content.

It would be thankful another list reference more appropiate to this question.

Thanks in avance.


<!-- ==================FILE================================== -->
<?xml version="1.0" encoding="iso-8859-1" ?>
<DATATYPES
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:noNamespaceSchemaLocation='datatypes.xsd'>

  <SYMBOLS>
    <TYPE id="first" class="bool">
      <VINIT>true</VINIT>
      <TRUE>this is true</TRUE>
      <FALSE>this is false</FALSE>
    </TYPE>

    <TYPE id="second" class="string">
      <VINIT>this is a string</VINIT>
      <MAXLEN>100</MAXLEN>
    </TYPE>

    <TYPE id="third" class="enum">
      <VINIT>1</VINIT>
      <OPTIONS>
	<OPTION value="1">first option</OPTION>
	<OPTION value="2">second option</OPTION>
	<OPTION value="3">third option</OPTION>
      </OPTIONS>
    </TYPE>


<!-- this is a error but good for schema  -->
    <TYPE id="fourth" class="bool">
      <VINIT>1</VINIT>
      <OPTIONS>
	<OPTION value="1">first option</OPTION>
	<OPTION value="2">second option</OPTION>
	<OPTION value="3">third option</OPTION>
      </OPTIONS>
    </TYPE>
  </SYMBOLS>

<!-- ..... anothers elements ... -->

</DATATYPES>


<!-- ============= SCHEMA ============ -->

<?xml version="1.0" encoding="ISO-8859-1" ?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">


  <xsd:group name="groupClassString">
    <xsd:sequence>
      <xsd:element name="VINIT"  type="xsd:string" />
      <xsd:element name="MAXLEN"    type="xsd:unsignedInt" minOccurs="0"/>
    </xsd:sequence>
  </xsd:group>


  <xsd:group name="groupClassBool">
    <xsd:sequence>
      <xsd:element name="VINIT"  type="xsd:boolean" />
      <xsd:element name="TRUE"   type="xsd:string"/>
      <xsd:element name="FALSE"  type="xsd:string"/>
    </xsd:sequence>
  </xsd:group>


  <xsd:group name="groupClassEnum">
    <xsd:sequence>
      <xsd:element name="VINIT"  type="xsd:unsignedInt" />
      <xsd:element name="OPTIONS"  >
	<xsd:complexType>
	  <xsd:sequence>
	    <xsd:element name="OPTION" maxOccurs="unbounded">
	      <xsd:complexType>
		<xsd:simpleContent>
		  <xsd:extension base="xsd:string">
		    <xsd:attribute name="value" type="xsd:unsignedInt" use="required"/>
		  </xsd:extension>
		</xsd:simpleContent>
	      </xsd:complexType>
	    </xsd:element>
	  </xsd:sequence>
	</xsd:complexType>
      </xsd:element>
    </xsd:sequence>
  </xsd:group>

  <xsd:complexType name="ClassSymbol">

    <xsd:choice >
      <xsd:group ref="groupClassString"/>
      <xsd:group ref="groupClassBool"/>
      <xsd:group ref="groupClassEnum"/>
    </xsd:choice>


    <xsd:attribute name="id" use="required" type="xsd:string"/>
    <xsd:attribute name="class" use="required">
      <xsd:simpleType>
	<xsd:restriction base="xsd:string">
	  <xsd:enumeration value="string"/>
	  <xsd:enumeration value="bool"/>
	  <xsd:enumeration value="enum"/>
	</xsd:restriction>
      </xsd:simpleType>
    </xsd:attribute>
  </xsd:complexType>



  <xsd:element name="DATATYPES">
    <xsd:complexType>
      <xsd:sequence>
	<xsd:element name="SYMBOLS">
	  <xsd:complexType >
	    <xsd:sequence>
	      <xsd:element name="TYPE" minOccurs="0" maxOccurs="unbounded"
                       type="ClassSymbol" />
	    </xsd:sequence>
	  </xsd:complexType>
	</xsd:element>
<!-- ....... Others elements ....... -->
      </xsd:sequence>
    </xsd:complexType>
  </xsd:element>	


</xsd:schema>

-- 
José Luis Zabalza
jlz.3008@gmail.com
Linux Counter 172551

Re: OffTopic: Newbie problems with Schema

[Boris Kolpackov <bo...@codesynthesis.com>]

Hi,

"Jose Luis Zabalza" <jl...@gmail.com> writes:

> It is posible do complex type content dependent of a attribute value?

The only attribute that can influence the content model of an element is
xsi:type.


> It would be thankful another list reference more appropiate to this
> question.

That would be xmlschema-dev@w3.org:

http://lists.w3.org/Archives/Public/xmlschema-dev/


hth,
-boris


-- 
Boris Kolpackov
Code Synthesis Tools CC
http://www.codesynthesis.com
Open-Source, Cross-Platform C++ XML Data Binding