//SetUloh1
// We have variable name, attribute name and scope, in which to look for variable
// We need to get the value of given attribute of given variable
// If this does not exist, return null
// You will use EXEScope.FindReferencingVariableByName() method, but you need to implement it first
// user.name
public String EvaluateAttributeValue(String ReferencingVariableName, String AttributeName, EXEScope Scope, CDClassPool ExecutionSpace)
{
EXEReferencingVariable ReferencingVariable = Scope.FindReferencingVariableByName(ReferencingVariableName);
if (ReferencingVariable == null)
{
return(null);
}
CDClassInstance ClassInstance = ExecutionSpace.GetClassInstanceById(ReferencingVariable.ClassName, ReferencingVariable.ReferencedInstanceId);
if (ClassInstance == null)
{
return(null);
}
return(ClassInstance.GetAttributeValue(AttributeName));
}
//SetUloh1
// Similar as task above, but this time we set the attribute value to "NewValue" parameter
// But it's not that easy, you need to check if attribute type and NewValue type are the same (e.g. both are integer)
// To do that, you need to find the referencing variable's class (via Scope) and then the attribute's type (vie ExecutionSpace)
// When you know the type of attribute, use EXETypes.IsValidValue to see if you can or cannot assign that value to that attribute
// You assign it in Scope
// Return if you could assign it or not
// EXETypes.determineVariableType()
public Boolean SetAttributeValue(String ReferencingVariableName, String AttributeName, EXEScope Scope, CDClassPool ExecutionSpace, String NewValue)
{
EXEReferencingVariable ReferencingVariable = Scope.FindReferencingVariableByName(ReferencingVariableName);
if (ReferencingVariable == null)
{
return(false);
}
CDClassInstance ClassInstance = ExecutionSpace.GetClassInstanceById(ReferencingVariable.ClassName, ReferencingVariable.ReferencedInstanceId);
if (ClassInstance == null)
{
return(false);
}
CDClass Class = ExecutionSpace.getClassByName(ReferencingVariable.ClassName);
if (Class == null)
{
return(false);
}
CDAttribute Attribute = Class.GetAttributeByName(AttributeName);
if (Attribute == null)
{
return(false);
}
String NewValueType = EXETypes.DetermineVariableType(null, NewValue);
if (!EXETypes.CanBeAssignedToAttribute(AttributeName, Attribute.Type, NewValueType))
{
return(false);
}
ClassInstance.SetAttribute(AttributeName, EXETypes.AdjustAssignedValue(Attribute.Type, NewValue));
return(true);
}