protected override Maybe<String> GetBaseMolecule(MoleculeSyntax molecule)
{
var aggregate = (AggregateSyntax)molecule.Parent;
var id = aggregate.GetIdTypeName(SymbolTable);
return base.GetBaseMolecule(molecule)
.Or(String.Format("AggregateEvent<{0}>", id));
}
protected override void WriteModuleClassAttributes(MoleculeSyntax molecule)
{
var version = molecule.Annotations.TrySingle(x => x.Name == "Event")
.SelectMaybe(x => x.Pairs.TryFirst(y => y.Name == "Version"))
.Select(x => x.Value)
.TrySelect<string, int>(int.TryParse)
.Where(x => x > 0)
.ValueOrDefault(1);
WriteLine("[AggregateEventVersion({0})]", version);
}
protected override IEnumerable<AtomInfo> GetBaseAtomInfo(MoleculeSyntax molecule)
{
var aggregate = (AggregateSyntax)molecule.Parent;
var id = aggregate.GetIdTypeName(SymbolTable);
return base.GetBaseAtomInfo(molecule)
.Concat(new[]
{
new AtomInfo(Syntax.IdentifierName("id"), new TypeReferenceSyntax(id, new TypeCardinalitySyntax(1, 1)), true),
new AtomInfo(Syntax.IdentifierName("version"), new TypeReferenceSyntax(Syntax.IdentifierName("Int32"), new TypeCardinalitySyntax(1, 1)), true),
});
}
protected override void Visit(MoleculeSyntax molecule)
{
if (molecule.IsAbstract) return;
var atoms = molecule.Atoms.Select(GetAtomInfo).Concat(GetBaseAtomInfo(molecule));
Write($"protected void Apply{molecule.Name}(");
Delimit(atoms, "parameter", ", ");
WriteLine(")");
using (WithBlock())
{
WriteLine($"if (Version <= 0) throw new InvalidOperationException(\"This overload of Apply{molecule.Name} can only be called after the first event is applied. Please call the overload which requires the Aggregate's ID to be provided.\");");
WriteLine();
Write($"ApplyEvent(new {molecule.Name}(");
Delimit(atoms, "argument", ", ");
WriteLine($"{(atoms.Any() ? ", " : "")}Id, Version + 1));");
}
var aggregate = (AggregateSyntax)molecule.Parent;
var id = aggregate.GetIdTypeName(SymbolTable);
var idAtom = new AtomInfo(Syntax.IdentifierName("id"), new TypeReferenceSyntax(id, new TypeCardinalitySyntax(1, 1)), true);
atoms = atoms.Concat(new[] { idAtom });
Write($"protected void Apply{molecule.Name}(");
Delimit(atoms, "parameter", ", ");
WriteLine(")");
using (WithBlock())
{
Write($"ApplyEvent(new {molecule.Name}(");
Delimit(atoms, "argument", ", ");
WriteLine($", Version + 1));");
}
}
protected override void WriteModuleClassAttributes(MoleculeSyntax molecule)
{
WriteLine("[ValueObject]");
}
protected override bool ShouldImplementEssencePattern(MoleculeSyntax molecule)
{
return false;
}
protected override bool ShouldBeEquatable(MoleculeSyntax molecule)
{
return false;
}
