public static Gene Load(GeneMemento memento, IImmutableDictionary <BigInteger, Gene> genesByHashCode)
{
switch (memento.Type)
{
case nameof(UseSchemaGene):
return(UseSchemaGene.FromMemento(memento, genesByHashCode));
case nameof(CreateTableGene):
return(CreateTableGene.FromMemento(memento, genesByHashCode));
case nameof(CreateColumnGene):
return(CreateColumnGene.FromMemento(memento, genesByHashCode));
case nameof(DropColumnGene):
return(DropColumnGene.FromMemento(memento, genesByHashCode));
case nameof(CreatePrimaryKeyGene):
return(CreatePrimaryKeyGene.FromMemento(memento, genesByHashCode));
case nameof(CreateUniqueIndexGene):
return(CreateUniqueIndexGene.FromMemento(memento, genesByHashCode));
case nameof(CreateIndexGene):
return(CreateIndexGene.FromMemento(memento, genesByHashCode));
case nameof(CreateForeignKeyGene):
return(CreateForeignKeyGene.FromMemento(memento, genesByHashCode));
case nameof(CustomSqlGene):
return(CustomSqlGene.FromMemento(memento, genesByHashCode));
default:
throw new ArgumentException($"Unknown type {memento.Type}");
}
}
public IndexSpecification CreateIndex(params ColumnSpecification[] columns)
{
var childGene = new CreateIndexGene(
_gene,
columns.Select(c => c.Gene),
Prerequisites);
EvolutionHistoryBuilder.Append(childGene);
childGene.AddToParent();
return(new IndexSpecification(childGene, EvolutionHistoryBuilder));
}
internal IndexSpecification(CreateIndexGene gene, EvolutionHistoryBuilder evolutionHistoryBuilder) :
base(evolutionHistoryBuilder)
{
_gene = gene;
}