gem-graph-server/debian/var/models/schemas/model_0.1.xmls

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<!-- https://www.freeformatter.com/xml-validator-xsd.html -->
<!-- https://www.w3schools.com/xml/el_attribute.asp  -->
<xs:attribute name="id" type="xs:string"/>
<xs:attribute name="date" type="xs:integer"/>
<xs:attribute name="name" type="xs:string"/>
<xs:attribute name="lang" type="xs:string"/>
<xs:attribute name="owner" type="xs:string"/>
<xs:attribute name="owner_id" type="xs:integer"/>
<xs:attribute name="author" type="xs:string"/>
<xs:attribute name="version" type="xs:float"/>
<xs:attribute name="sequence" type="xs:integer"/>
<xs:attribute name="probability" type="xs:integer"/>
<xs:attribute name="parent" type="xs:string"/>
<xs:attribute name="x" type="xs:integer" default="0"/>
<xs:attribute name="y" type="xs:integer" default="0"/>
<xs:attribute name="z" type="xs:integer" default="0"/>


<xs:attributeGroup name="id_date_author">
      <xs:attribute ref="id"/>
      <xs:attribute ref="date"/>
      <xs:attribute ref="author"/>
</xs:attributeGroup>

<xs:attributeGroup name="x_y_z">
      <xs:attribute ref="x"/>
      <xs:attribute ref="y"/>
      <xs:attribute ref="z"/>
</xs:attributeGroup>

<xs:element name="ref">
    <xs:complexType>
        <xs:simpleContent>
            <xs:extension base="xs:string">
              <xs:attributeGroup ref="id_date_author"/>
              <xs:attribute ref="lang" use="required"/>
            </xs:extension>
        </xs:simpleContent>
    </xs:complexType>
</xs:element>

<xs:element name="quote" substitutionGroup="ref"/>

<xs:element name="arrow">
    <xs:complexType>
        <xs:sequence>
            <xs:element minOccurs="0" ref="quote"/>
        </xs:sequence>
        <xs:attributeGroup ref="x_y_z"/>
        <xs:attribute name="site" type="xs:integer" default="1"/>
        <xs:attribute name="weight" type="xs:integer" default="0"/>
    </xs:complexType>
</xs:element>

<xs:element name="state">
    <xs:complexType>
    <xs:sequence minOccurs="1" maxOccurs="unbounded">
        <xs:element ref="arrow"/>
    </xs:sequence>
    <xs:attributeGroup ref="id_date_author"/>
    </xs:complexType>
</xs:element>

<xs:element name="object" substitutionGroup="state"/>

<xs:element name="space">
    <xs:complexType>
    <xs:sequence minOccurs="1" maxOccurs="unbounded">
        <xs:element ref="arrow"/>
    </xs:sequence>
    <xs:attributeGroup ref="id_date_author"/>
    <xs:attribute ref="sequence" use="required"/>
    </xs:complexType>
</xs:element>

<xs:element name="if">
    <xs:complexType>
    <xs:sequence minOccurs="0" maxOccurs="unbounded">
        <xs:element minOccurs="0" ref="quote"/>
        <xs:element ref="arrow"/>
    </xs:sequence>
    </xs:complexType>
</xs:element>

<xs:element name="then" substitutionGroup="if"/>

<xs:element name="transition">
    <xs:complexType>
        <xs:sequence minOccurs="1" maxOccurs="1">
            <xs:element minOccurs="0" ref="quote"/>
            <xs:element ref="if"/>
            <xs:element ref="then"/>
        </xs:sequence>
        <xs:attributeGroup ref="id_date_author"/>
        <xs:attribute ref="parent" use="required"/>
        <xs:attribute ref="probability" use="required"/>
    </xs:complexType>
</xs:element>

<xs:element name="gem-graph-model">
<xs:complexType>
<xs:sequence>
    <xs:element name="identity">
        <xs:complexType>
          <xs:sequence>
              <xs:element name="name" type="xs:string"/>
              <xs:element name="owner" type="xs:string"/>
              <xs:element name="owner_id" type="xs:integer"/>
              <xs:element name="date" type="xs:integer"/>
              <xs:element name="version" type="xs:float"/>
              <xs:element minOccurs="0" ref="ref"/>
          </xs:sequence>
        </xs:complexType>
    </xs:element>

        <xs:element name="parameters">
        <xs:complexType>
        <xs:sequence>

            <xs:element name="simulation">
                <xs:complexType>
                <xs:sequence>

                    <xs:element name="max_thread" type="xs:integer"/>

                    <xs:element name="max_cycles" type="xs:integer"/>

                </xs:sequence>
                </xs:complexType>
            </xs:element>

            <xs:element name="space-param">
                <xs:complexType>
                <xs:sequence>

                    <xs:element name="dimension" type="xs:integer"/>

                    <xs:element name="size">
                        <xs:complexType>
                            <xs:attributeGroup ref="x_y_z"/>
                        </xs:complexType>
                    </xs:element>

                    <xs:element name="site_multiplicity" type="xs:integer"/>

              </xs:sequence>
              </xs:complexType>
          </xs:element>

          </xs:sequence>
          <xs:attributeGroup ref="id_date_author"/>
          </xs:complexType>
      </xs:element>

      <xs:element name="objects">
          <xs:complexType>
          <xs:sequence minOccurs="1" maxOccurs="unbounded">
              <xs:element ref="state"/>
          </xs:sequence>
          <xs:attributeGroup ref="id_date_author"/>
          </xs:complexType>
      </xs:element>

      <xs:element name="savestates">
          <xs:complexType>
          <xs:sequence minOccurs="0" maxOccurs="unbounded">
              <xs:element ref="space"/>
          </xs:sequence>
          <xs:attributeGroup ref="id_date_author"/>
          </xs:complexType>
      </xs:element>

      <xs:element name="transitions">
          <xs:complexType>
          <xs:sequence minOccurs="0" maxOccurs="unbounded">
              <xs:element ref="transition"/>
          </xs:sequence>
          <xs:attributeGroup ref="id_date_author"/>
          </xs:complexType>
      </xs:element>

</xs:sequence>
<xs:attribute ref="version" use="required"/>
</xs:complexType>
</xs:element>
</xs:schema>