constraints-person.xml

<constraint-mappings
        xmlns="http://xmlns.jcp.org/xml/ns/validation/mapping"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/validation/mapping
            http://xmlns.jcp.org/xml/ns/validation/mapping/validation-mapping-2.0.xsd"
        version="2.0">

    <bean class="io.grpc.examples.GreeterOuterClass$Person">
        <class>
            <constraint annotation="org.lognet.springboot.grpc.demo.PersonConstraint"/>
        </class>
        <getter name="name">
            <constraint annotation="jakarta.validation.constraints.NotEmpty"/>
        </getter>
        <getter name="nickName">

            <!--should be empty for request message-->
            <constraint annotation="jakarta.validation.constraints.Size">
                <groups>
                    <value>org.lognet.springboot.grpc.validation.group.RequestMessage</value>
                </groups>
                <element name="min">0</element>
                <element name="max">0</element>

            </constraint>

            <!--should NOT  be empty for response message-->
            <constraint annotation="jakarta.validation.constraints.NotEmpty">
                <groups>
                    <value>org.lognet.springboot.grpc.validation.group.ResponseMessage</value>
                </groups>
            </constraint>
        </getter>

        <getter name="age">
            <constraint annotation="jakarta.validation.constraints.Max">
                <element name="value">120</element>
            </constraint>
        </getter>

        <method name="hasAddress">
            <return-value>
                <constraint annotation="jakarta.validation.constraints.AssertTrue"/>
            </return-value>
        </method>


    </bean>


</constraint-mappings>