A dynamic XML Engine that creates dynamic DOMs built on dynamic rules and expressions.
Tutorial Details:
Hierarchical Inherited Rule-Interpreted XML is much like an XML parser in that it takes any XML source and parses the XML to create a document object model (DOM), which can then be accessed via an API. However, the capabilities of Hierarchical Inherited Rule-Interpreted XML extend far beyond the realm of simply parsing XML. This technology is capable of modifying the XML structure as the DOM is created as well as dynamically interpreting values from the DOM as it is accessed via the API during run-time execution. Therefore, expressions can now be embedded within the elements and attributes of a XML document, and, when the element or attribute value is retrieved via the API, it is interpreted by execution of the expression.
For example, imagine an XML document that contains an attribute called "username". The value of that attribute can then be defined as an expression so that whenever a query for the attribute value surfaces during the execution of this application, it is resolved based on the current application state, thus ensuring that the value will always be the current user. Hierarchical Inherited Rule-Interpreted XML makes possible a living XML document in which any value can be dynamically resolved during execution of an application.
Hierarchical Inherited Rule-Interpreted XML is a dynamic engine that also allows one to modify the XML document structure after it is parsed. Structure modifications are then represented in the created DOM. The DOM also can present modifications dynamically, so that the elements that exist within the DOM may be determined based on application state. Therefore, the API can be queried in order to collect a list of child elements from an element in an XML document, but the list of elements returned may not represent the physical XML document that was originally parsed.
Imagine a case in which an XML document is queried for a list of link elements that should be displayed on a Web page. Hierarchical Inherited Rule-Interpreted XML could make a decision, based on current application state (possibly the current user), that only certain link elements are applicable. Therefore, when one asks the API for a list of elements, they can be determined based on the current application state. This determination would then allow the application to simply ask for the list of links, and the returned list will be applicable only for the current user.
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