The Event Type Editor
The Event Type Editor is an editor specially designed to create schemas for EDA applications. The schemas created by the Event Type Editor conform to the W3C XML Schema (XSD) specification, but they only use a subset of the available XSD features. This means that the Event Type Editor is specially tailored to allow you to create your event schemas simply and quickly, by limiting the functionality to just the XSD features that are required.
The schemas created by the Event Type Editor have the following structure:
A standard XML header, as required by XSD. This is created automatically by the editor.
A global element that contains all of the user-defined nodes. This is created automatically by the editor. This global element will be the payload of event instances that are processed in the EDA environment.
The nodes you define. These can be field nodes, composite nodes or references to structures in other schemas. Field nodes are XSD simple type elements with a cardinality. Composite nodes are containers for field nodes and other composite nodes. References are pointers to top-level nodes in other schemas. For more information about elements types, see
Overview of Available Event Type
Elements.
Usage of the editor is simple: a palette contains the available node types, and you can drag and drop icons from the palette to the editor canvas to construct the required event type structure. After you have created any given node, use the Properties view in order to provide the required properties for the node type.
When you create a node that is a reference to a node in another schema, the editor assists you by presenting a list of schemas in predefined locations, and allows you to examine the structure of the referenced schema in order to find the node that you want to reference.
Related Topics