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Classes and Objects

A class in iXML is an array prototype. It defines properties, a constructor, and methods. An object is an instance of a class, created with <new>.

class — Class definition​

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Syntax​

XML
<class var="MyClass">
    <extends class="ParentClass"/>

    <property name="propName">default value</property>

    <constructor>
        <set var="this.propName">$paramValue</set>
    </constructor>

    <method name="methodName">
        <set var="return">$this.propName</set>
    </method>
</class>

Constituents​

  • Properties: Default key-value pairs.
  • Constructor: Automatic initialization routine.
  • Methods: Functions bound to the instance check.

new — New instance​

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Creates a new object from a class.

Syntax​

XML
<new class="ClassName" var="objectVar">
    <param name="paramName">value</param>
</new>

method — Method definition​

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Defines a function bound to the class. Inside a method, $this refers to the object instance.

Inheritance​

Classes can inherit from parent classes using <extends>.

  • The child inherits all properties and methods.
  • Constructors execute in chain order: Parent first, then Child.
  • Methods can be overridden by redefining them in the child.

Introspection​

  • instanceof: Check if an object is an instance of a class.
  • classinfo: Retrieve structural information about a class.