Hello xerces techies,
Can somesome help me if XML schema information can be retrieved through
Xerces parser from an XSD document and if so how? Any clues will get me
started as right now I could get
any help from the available documentation.
-Suresh
-----Original Message-----
From: Suresh Babu Koya
Sent: Wednesday, March 20, 2002 2:40 PM
To: '[EMAIL PROTECTED]'
Subject: Reading XML Schemas
Greetings,
Is there any way to read XML schemas and generate a tree structure for an
element given a doctype. I have used the validation facilities of xerces
with W3c schemas but I am not familiar with with the API used for reading
schemas.
I could not find any helpful information from the API documentation.
After reading <Source>personal.xsd</Source> schema supplied with Xerces and
selecting the root element as <RootElement>personnel</RootElement>.
I want to show a tree generated by reading the schema as
personnel
|
+----person
|
+----(At) id
|
+---(,)
|
+----(1) name
|
+----(1) email
|
+----(1) link
| |
| +-----(At) Manager
and So on........
Personal.xsd
--------------------
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs='http://www.w3.org/2001/XMLSchema'>
<xs:element name="personnel">
<xs:complexType>
<xs:sequence>
<xs:element ref="person" minOccurs='1' maxOccurs='unbounded'/>
</xs:sequence>
</xs:complexType>
<xs:unique name="unique1">
<xs:selector xpath="person"/>
<xs:field xpath="name/given"/>
<xs:field xpath="name/family"/>
</xs:unique>
<xs:key name='empid'>
<xs:selector xpath="person"/>
<xs:field xpath="@id"/>
</xs:key>
<xs:keyref name="keyref1" refer='empid'>
<xs:selector xpath="person"/>
<xs:field xpath="link/@manager"/>
</xs:keyref>
</xs:element>
<xs:element name="person">
<xs:complexType>
<xs:sequence>
<xs:element ref="name"/>
<xs:element ref="email" minOccurs='0' maxOccurs='unbounded'/>
<xs:element ref="url" minOccurs='0' maxOccurs='unbounded'/>
<xs:element ref="link" minOccurs='0' maxOccurs='1'/>
</xs:sequence>
<xs:attribute name="id" type="xs:ID" use='required'/>
<xs:attribute name="note" type="xs:string"/>
<xs:attribute name="contr" default="false">
<xs:simpleType>
<xs:restriction base = "xs:string">
<xs:enumeration value="true"/>
<xs:enumeration value="false"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="salary" type="xs:integer"/>
</xs:complexType>
</xs:element>
<xs:element name="name">
<xs:complexType>
<xs:all>
<xs:element ref="family"/>
<xs:element ref="given"/>
</xs:all>
</xs:complexType>
</xs:element>
<xs:element name="family" type='xs:string'/>
<xs:element name="given" type='xs:string'/>
<xs:element name="email" type='xs:string'/>
<xs:element name="url">
<xs:complexType>
<xs:attribute name="href" type="xs:string" default="http://"/>
</xs:complexType>
</xs:element>
<xs:element name="link">
<xs:complexType>
<xs:attribute name="manager" type="xs:IDREF"/>
<xs:attribute name="subordinates" type="xs:IDREFS"/>
</xs:complexType>
</xs:element>
<xs:notation name='gif' public='-//APP/Photoshop/4.0'
system='photoshop.exe'/>
</xs:schema>
Any insight into this would be of great help.
Regards,
Suresh
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