/// <summary>
/// Attempts to create the composite component. Component is created only if definition is a DecisionMetadataDefinition.
/// Otherwise method returns false, and null node.
/// </summary>
/// <param name="experiment">The experiment to which new component is added.</param>
/// <param name="metadataDefinition">The metadata definition which component is created based on.</param>
/// <param name="data">The data containing position of new vertex</param>
/// <param name="newCreatedNode">Output of new created node; null if metadatadefinition was not a DecisionMetadataDefinition</param>
/// <returns>
/// true if metadatadefinition was a DecisionMetadataDefinition and node has been created, otherwise false
/// </returns>
private static bool TryCreateDecisionComponent(IEditableExperiment experiment, MetadataDefinition metadataDefinition, SerializedVertexData data,
out ExperimentNode newCreatedNode)
{
bool isCreated = false;
newCreatedNode = null;
DecisionMetadataDefinition decisionMetadataDefinition = metadataDefinition as DecisionMetadataDefinition;
if (decisionMetadataDefinition != null)
{
newCreatedNode = CreateDecisionComponent(experiment, decisionMetadataDefinition, data);
isCreated = true;
}
return(isCreated);
}
/// <summary>
/// Creates the decision component.
/// </summary>
/// <param name="experiment">The experiment to which new component is added.</param>
/// <param name="decisionMetadataDefinition">The decision metadata definition.</param>
/// <param name="data">The data containing position of new vertex</param>
/// <returns>Newly added desicion node (note, that in case of decision additional nodes are constructed, two scopes and exit decision node). They are not returned.</returns>
private static ExperimentDecisionNode CreateDecisionComponent(IEditableExperiment experiment, DecisionMetadataDefinition decisionMetadataDefinition, SerializedVertexData data)
{
data.Metadata = new DecisionMetadata(decisionMetadataDefinition.Label);
ExperimentDecisionNode decisionNode = new ExperimentDecisionNode(Guid.NewGuid().ToString(), data);
experiment.AddVertex(decisionNode);
if (decisionMetadataDefinition.ID == DecisionMetadataDefinition.DecisionGuid)
{
//generate corresponding scopes and exit nodes
GenerateScopesAndExit(experiment, data, decisionNode);
}
//otherwise it is GoTo decision that does not have corresponding scopes, so simply return it
return(decisionNode);
}
