<?xml version="1.0"?>
<schema xmlns="http://www.w3.org/2001/XMLSchema"
		xmlns:ipo="http://www.altova.com/IPO"
		targetNamespace="http://www.altova.com/IPO"
		elementFormDefault="qualified"
		attributeFormDefault="unqualified">

	<include schemaLocation="address.xsd" />

	<element name="purchaseOrder" type="ipo:PurchaseOrderType" />
	<element name="comment" type="string" />

	<complexType name="PurchaseOrderType">
		<sequence>
			<element name="shipTo" type="ipo:Address" />
			<element name="billTo" type="ipo:Address" />
			<element ref="ipo:comment" minOccurs="0" />
			<element name="Items" type="ipo:items" />
		</sequence>
		<attribute name="orderDate" type="date" />
	</complexType>

	<complexType name="items">
		<sequence>
			<element name="item" maxOccurs="unbounded">
				<complexType>
					<sequence>
						<element name="productName" type="string" />
						<element name="quantity">
							<simpleType>
								<restriction base="positiveInteger">
									<maxExclusive value="1000" />
								</restriction>
							</simpleType>
						</element>
						<element name="price" type="decimal" />
						<element name="ipo:comment" minOccurs="0" />
						<element name="shipDate" type="date" />
					</sequence>
					<attribute name="partNum" type="ipo:Sku" />
				</complexType>
			</element>
		</sequence>
	</complexType>

	<simpleType name="Sku">
		<restriction base="string">
			<pattern value="\d{3}-[A-Z]{2}" />
		</restriction>
	</simpleType>
</schema>

<!-- address.xsd -->
<?xml version="1.0"?>
<schema xmlns="http://www.w3.org/2001/XMLSchema"
		xmlns:ipo="http://www.altova.com/IPO"
		targetNamespace="http://www.altiva.com/IPO"
		elementFormDefault="qualified"
		attributeFormDefault="unqualified">

	<complexType name="Address" abstract="true">
		<sequence>
			<element name="name" type="string" />
			<element name="street" type="string" />
			<element name="city" type="string" />
		</sequence>
		<attribute name="type">
			<simpleType>
				<restriction base="string">
					<enumeration value="ipo:US-Address" />
					<enumeration value="ipo:EU-Address" />
				</restriction>
			</simpleType>
		</attribute>
	</complexType>

	<complexType name="US-Address">
		<comlexContent>
			<extension base="ipo:Address">
				<sequence>
					<element name="state" type="ipo:US-State" />
					<element name="zip" type="positiveInteger" />
				</sequence>
			</extension>
		</complexContent>
	</complexType>

	<complexType name="EU-Address">
		<complexContent>
			<extension base="ipo:Address">
				<sequence>
					<element name="postcode" type="ipo:EU-Postcode" />
				</sequence>
				<attribute name="export-code" type="positiveInteger" fixed="1" />
			</extension>
		</complexContent>
	</complexType>

	<simpleType name="US-State">
		<restriction base="string">
			<enumeration value="AK" />
			<enumeration value="AL" />
			<enumeration value="AR" />
			<!-- ... -->
			<enumeration value="WA" />
			<enumeration value="WI" />
			<enumeration value="WV" />
			<enumeration value="WY" />
		</restriction>
	</simpleType>

	<simpleType name="EU-Postcode">
		<restriction base="positiveInteger">
			<maxExclusive value="100000" />
		</restriction>
	</simpleType>
</schema>