Limit content of a tag with Schema

[jiaqi.guo]

I want to limit the content of a tag to be a string or another tag. How
can I do it?
<mytag att1="abc">Hello World</mytag>
or
<mytag att1="abc"><tag1>...</tag1></mytag>
or
<mytag att1="abc"><tag2>...</tag2></mytag>

Only pure text , one <tag1> OR one <tag2> is allowed in <mytag>
How should I define <mytag> in schema.


Thanks in advance
Jiaqi

 

[Stan Kitsis [MSFT]]

Hi Jiaqi,

You need to use a mixed model to allow both text and other elements within
<mytag> element. However, with a mixed model you cannot constrain the
position of the text nodes. So if you use it, it will allow text OR tag1 OR
tag2 OR text and tag1 OR text and tag2. Also note that in the last two
cases the text can appear before, after, or both before and after tag1 or
tag2 elements.

Here's an example:

<xs:complexType name="mytag" mixed="true">
<xs:choice minOccurs="0" maxOccurs="1">
<xs:element name="tag1" type="tag1" />
<xs:element name="tag2" type="tag2" />
</xs:choice>
</xs:complexType>
<xs:element name="mytag" type="mytag" />

--
Stan Kitsis
Program Manager, XML Technologies
Microsoft Corporation

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