basic

Basic code examples

These code examples show basic principles for AutomationML application development using the AMLEngine. The CAEX classes, used in the examples, are shown in the diagram. The CAEX Classes are all defined in the Aml_Engine_CAEX namespace.

Basic Examples

1. Loading a Document

using Aml.Engine.CAEX;

var document = CAEXDocument.LoadFromFile ("myFile.aml");

2. Saving a Document

using Aml.Engine.CAEX;

CAEXDocument.SaveToFile ("myFile.aml", true);

3. Creation of a new CAEX document containing Internal Elements

using Aml.Engine.CAEX;

var document = CAEXDocument.New_Document ();
var myIH = document.CAEXFile.InstanceHierarchy.Append("myIH");
var myIE = myIH.InternalElement.Append("myIE");

4. Accessing properties using Indexers

using Aml.Engine.CAEX;

var document = CAEXDocument.New_Document ();
var myIH = document.CAEXFile.InstanceHierarchy.Append("myIH");
myIH.Version = "1.0";

// Get the first CAEXElement from the sequence of elements
myIH = document.CAEXFile.InstanceHierarchy[0];

// Get the first CAEXElement from the sequence of elements with the name "myIH"
myIH = document.CAEXFile.InstanceHierarchy["myIH"];

// Get the first CAEXElement with a specific attribute AND value from the sequence of elements
myIH = document.CAEXFile.InstanceHierarchy[(Name:"Version", Value:"1.0")];

5. Traversing the Instances of a Document

using Aml.Engine.CAEX;
var document = CAEXDocument.LoadFromFile("myFile.aml");

// browse the Instance Hierarchies in the file
foreach (var instanceHierary in document.CaexFile.InstanceHierarchy)
{
    // browse all InternalElements deep and import the internal Elements to your system
    foreach (var internalElement in instanceHierarchy.Descendants<InternalElementType>())
    {
        // ToDo: import internal Element
    }
}

6. InternalElement creation by class instantiation.

using Aml.Engine.CAEX;

var document = CAEXDocument.New_Document ();
var myIH = document.CAEXFile.InstanceHierarchy.Append("myIH");
var mySlib = document.CAEXFile.SystemUnitClassLib.Append("mySlib");
var mySuc = mySlib.SystemUnitClass.Append("suClass");

// insert a new class instance (InternalElement) to the InstanceHierarchy
var myIE = myIH.Insert (mySuc.CreateClassInstance());

7. Creation of instance to instance relations with InternalLinks

using Aml.Engine.CAEX;

var document = CAEXDocument.New_Document ();
var myIH = document.CAEXFile.InstanceHierarchy.Append("myIH");
var myIClib = document.CAEXFile.InterfaceClassLib.Append("myIClib");
var myIC = myIClib.InterfaceClass.Append("myIC");

// create an InternalElement which is a common parent to hold the InternalLink
var linkParent = myIH.InternalElement.Append ("linkParent");

// create the instances
var myIEA = linkParent.InternalElement.Append ("myIEA");
var myIEB = linkParent.InternalElement.Append ("myIEB");

// create the Interfaces for the InternalLink connection
myIEA.ExternalInterface.Append ("a");
myIEB.ExternalInterface.Append ("b");

// create the instance to instance relation
var relation = InternalLinkType.New_InternalLink (myIEA.ExternalInterface["a"], myIEB.ExternalInterface["b"], "rel1");

// an alternative way is, to use the InternalLink collection
// var relation = linkParent.InternalLink.Append ("rel1");
// relation.AInterface = myIEA.ExternalInterface["a"];
// relation.BInterface = myIEB.ExternalInterface["b"];

8. Creation of class to class relations using AutomationML Base Classes

See Also

• IClassWithBaseClassReference
• BaseClass,
• InterfaceClassLib
• MakeAutomationMLBaseInterface

using Aml.Engine.CAEX;
using Aml.Engine.AmlObjects;

var document = CAEXDocument.New_Document ();

// the first solution shows an implementation, which uses existing libraries and classes
void methodWithClasses ()
{
    // add the AutomationMLInterfaceClassLib
    var amlBaseICLib = AutomationMLInterfaceClassLibType.InterfaceClassLib(document);
    var myIClib = document.CAEXFile.InterfaceClassLib.Append("myIClib");

    var myIC = myIClib.InterfaceClass.Append("myICClass");
    var myIC.BaseClass = amlBaseICLib.AutomationMLClass(AutomationMLInterfaceClassLib.AutomationMLBaseInterface);
}

// the second solution shows an implementation, which uses the standardized class path
void methodWithClassPath ()
{
    var myIClib = document.CAEXFile.InterfaceClassLib.Append("myIClib");
    var myIC = myIClib.InterfaceClass.Append("myICClass");
    
    // creates a class relation to the AutomationML Base Interface Class
    myIC.MakeAutomationMLBaseInterface();
}

See Also

Other Resources

• Document validation
• Query service
• Advanced document processing using services