Java Community | Help. Code. Learn.•5mo ago

how to use xsd file?

hey guys. can smb explain how xsd files work? did i get it right? heres a fragment of my xsd file:

<xs:complexType name="paymentInformation">
        <xs:sequence>
            <xs:element name="transactionId" type="tns:transactionId"/>
            <xs:element name="clientId" type="tns:clientId"/>
            <xs:element name="amount" type="tns:amount"/>
            <xs:element name="signature" type="tns:signature"/>
        </xs:sequence>
    </xs:complexType>


    <xs:simpleType name="transactionId">
        <xs:restriction base="xs:string">
            <xs:maxLength value="100" />
        </xs:restriction>
    </xs:simpleType>
    <xs:simpleType name="clientId">
        <xs:restriction base="xs:string">
            <xs:maxLength value="32" />
        </xs:restriction>
    </xs:simpleType>
    <xs:simpleType name="amount">
        <xs:restriction base="xs:decimal">
            <xs:maxLength value="7" />
        </xs:restriction>
    </xs:simpleType>
    <xs:simpleType name="signature">
        <xs:restriction base="xs:string">
            <xs:maxLength value="200" />
        </xs:restriction>
    </xs:simpleType>

<xs:complexType name="paymentInformation">
        <xs:sequence>
            <xs:element name="transactionId" type="tns:transactionId"/>
            <xs:element name="clientId" type="tns:clientId"/>
            <xs:element name="amount" type="tns:amount"/>
            <xs:element name="signature" type="tns:signature"/>
        </xs:sequence>
    </xs:complexType>


    <xs:simpleType name="transactionId">
        <xs:restriction base="xs:string">
            <xs:maxLength value="100" />
        </xs:restriction>
    </xs:simpleType>
    <xs:simpleType name="clientId">
        <xs:restriction base="xs:string">
            <xs:maxLength value="32" />
        </xs:restriction>
    </xs:simpleType>
    <xs:simpleType name="amount">
        <xs:restriction base="xs:decimal">
            <xs:maxLength value="7" />
        </xs:restriction>
    </xs:simpleType>
    <xs:simpleType name="signature">
        <xs:restriction base="xs:string">
            <xs:maxLength value="200" />
        </xs:restriction>
    </xs:simpleType>

thanks in advance

5 Replies

JavaBot•5mo ago

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Peter Rader•5mo ago

A XSD file can be used to validate xml files and fragments. According to your fragment, there is a complextype having the tagname paymentInformation referencing simple types (decimal is similar to double/float in java, string is String). According to your fragment, the folowing xml should be validated successfully:

<paymentInformation>
  <transactionId>abcdef</transactionId>
  <clientId>abcdef</clientId>
  <amount>1.0</amount>
  <signature>abcdef</signature>
</paymentInformation>

<paymentInformation>
  <transactionId>abcdef</transactionId>
  <clientId>abcdef</clientId>
  <amount>1.0</amount>
  <signature>abcdef</signature>
</paymentInformation>

Assuming you use the namespace ff, you could validate:

<ff:paymentInformation>
  <ff:transactionId>abcdef</ff:transactionId>
  <ff:clientId>abcdef</ff:clientId>
  <ff:amount>1.0</ff:amount>
  <ff:signature>abcdef</ff:signature>
</ff:paymentInformation>

<ff:paymentInformation>
  <ff:transactionId>abcdef</ff:transactionId>
  <ff:clientId>abcdef</ff:clientId>
  <ff:amount>1.0</ff:amount>
  <ff:signature>abcdef</ff:signature>
</ff:paymentInformation>

Kyo-chan•5mo ago

In more modern times, it's been used to describe the format of xml documents more than to use that format for validation purpose. Typically used to create model classes that represent that format. Though even more modern times tended to do the opposite: generating format description from model classes, and to stop caring about XML and using JSON and OpenAPI instead.

Peter Rader•5mo ago

Yes, json have also a schema-definition. But I never saw it activly using by anybody. XSD is often used by IDEs like eclipse to make code-suggestion (usefull or not). See:

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how to use xsd file?