public WhenFormulaChangesBuilder <T> From(Expression <Func <T, T> > sourceExpression, Action <Exception> onError, string nodeId = null)
{
ISourceDefinition <T> sourceDefinition;
if (sourceExpression.IsWritable())
{
sourceDefinition = CreateMemberDefinition(sourceExpression, nodeId, true, true);
}
else
{
sourceDefinition = CreateFormulaDefinition(sourceExpression, nodeId, true);
}
engine.AddExpression(sourceDefinition, targetMemberDefinition, onError);
return(new WhenFormulaChangesBuilder <T>(sourceExpression, nodeId, engine));
}
public void Do(Expression <Action <T> > action, Action <Exception> onError, string actionId = null)
{
dependencyEngine.AddExpression(sourceDefinition, new ActionDefinition <T>(action, actionId), onError);
}