Use Rules In Your Applications

<?xml version="1.0" encoding="Windows-1252"?>
<!-- edited with XMLSpy v2006 rel. 3 sp1 (http://www.altova.com) by Jeff Bramlett (The Weather Channel) -->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified">
	<xs:element name="Rules">
		<xs:annotation>
			<xs:documentation>The main collection object</xs:documentation>
		</xs:annotation>
		<xs:complexType>
			<xs:sequence>
				<xs:element name="Variables">
					<xs:annotation>
						<xs:documentation>The collection of Variables to  modify with Rules</xs:documentation>
					</xs:annotation>
					<xs:complexType>
						<xs:sequence>
							<xs:element name="Variable" maxOccurs="unbounded">
								<xs:annotation>
									<xs:documentation>The base Value type for this  Rules Engine</xs:documentation>
								</xs:annotation>
								<xs:complexType>
									<xs:simpleContent>
										<xs:extension base="xs:string">
											<xs:attribute name="id" type="xs:string" use="required">
												<xs:annotation>
													<xs:documentation>The unique identifier</xs:documentation>
												</xs:annotation>
											</xs:attribute>
										</xs:extension>
									</xs:simpleContent>
								</xs:complexType>
							</xs:element>
						</xs:sequence>
					</xs:complexType>
				</xs:element>
				<xs:element name="Rule" maxOccurs="unbounded">
					<xs:annotation>
						<xs:documentation>The component that does the work.</xs:documentation>
					</xs:annotation>
					<xs:complexType>
						<xs:sequence>
							<xs:element name="Expression" type="xs:string">
								<xs:annotation>
									<xs:documentation>Expression of this Rule for Actions to "match"</xs:documentation>
								</xs:annotation>
							</xs:element>
							<xs:element name="Actions">
								<xs:annotation>
									<xs:documentation>Collection of Actions</xs:documentation>
								</xs:annotation>
								<xs:complexType>
									<xs:sequence minOccurs="0">
										<xs:element name="Action" maxOccurs="unbounded">
											<xs:complexType>
												<xs:sequence>
													<xs:element name="Match" type="xs:string">
														<xs:annotation>
															<xs:documentation>Expression ot evaluate and match to Rule Expression</xs:documentation>
														</xs:annotation>
													</xs:element>
													<xs:element name="Assign" type="xs:string">
														<xs:annotation>
															<xs:documentation>Expression to assign to the Variable identified by the actionId.</xs:documentation>
														</xs:annotation>
													</xs:element>
												</xs:sequence>
												<xs:attribute name="actionId" type="xs:string" use="required">
													<xs:annotation>
														<xs:documentation>Unique Identifier of Rule element to modify</xs:documentation>
													</xs:annotation>
												</xs:attribute>
												<xs:attribute name="type" type="xs:string" use="required">
													<xs:annotation>
														<xs:documentation>The type of modification to make</xs:documentation>
													</xs:annotation>
												</xs:attribute>
											</xs:complexType>
										</xs:element>
									</xs:sequence>
								</xs:complexType>
							</xs:element>
							<xs:element name="SubRules">
								<xs:annotation>
									<xs:documentation>Collection of Rules</xs:documentation>
								</xs:annotation>
								<xs:complexType>
									<xs:sequence minOccurs="0">
										<xs:element name="Rule" maxOccurs="unbounded">
											<xs:complexType>
												<xs:sequence>
													<xs:element name="Expression" type="xs:string"/>
													<xs:element name="Actions">
														<xs:complexType>
															<xs:sequence>
																<xs:element name="Action" maxOccurs="unbounded">
																	<xs:complexType>
																		<xs:sequence>
																			<xs:element name="Match" type="xs:string"/>
																			<xs:element name="Assign" type="xs:string"/>
																		</xs:sequence>
																		<xs:attribute name="actionId" type="xs:string" use="required"/>
																		<xs:attribute name="type" type="xs:string" use="required"/>
																	</xs:complexType>
																</xs:element>
															</xs:sequence>
														</xs:complexType>
													</xs:element>
													<xs:element name="SubRules"/>
												</xs:sequence>
												<xs:attribute name="id" type="xs:string" use="required"/>
												<xs:attribute name="useInferencing" type="xs:string" use="required"/>
											</xs:complexType>
										</xs:element>
									</xs:sequence>
								</xs:complexType>
							</xs:element>
						</xs:sequence>
						<xs:attribute name="id" type="xs:string" use="required">
							<xs:annotation>
								<xs:documentation>The unique identifier</xs:documentation>
							</xs:annotation>
						</xs:attribute>
						<xs:attribute name="useInferencing" type="xs:string" use="required">
							<xs:annotation>
								<xs:documentation>Boolean switch to use this Rule in inferencing</xs:documentation>
							</xs:annotation>
						</xs:attribute>
					</xs:complexType>
				</xs:element>
				<xs:element name="Triggers">
					<xs:annotation>
						<xs:documentation>Collection of Triggers to "Run" rules.</xs:documentation>
					</xs:annotation>
					<xs:complexType>
						<xs:sequence>
							<xs:element name="Trigger" maxOccurs="unbounded">
								<xs:annotation>
									<xs:documentation>A single connection to "Run" a rule when a Variable changes</xs:documentation>
								</xs:annotation>
								<xs:complexType>
									<xs:attribute name="id" type="xs:string" use="required">
										<xs:annotation>
											<xs:documentation>Unique Identifier for this Trigger</xs:documentation>
										</xs:annotation>
									</xs:attribute>
									<xs:attribute name="varID" type="xs:string" use="required">
										<xs:annotation>
											<xs:documentation>Variable ID to watch for modifications</xs:documentation>
										</xs:annotation>
									</xs:attribute>
									<xs:attribute name="ruleID" type="xs:string" use="required">
										<xs:annotation>
											<xs:documentation>Rule to run when the Variable changes in any way.</xs:documentation>
										</xs:annotation>
									</xs:attribute>
								</xs:complexType>
							</xs:element>
						</xs:sequence>
					</xs:complexType>
				</xs:element>
			</xs:sequence>
		</xs:complexType>
	</xs:element>
</xs:schema>