protected virtual IEnumerable <MigrationOperation> Diff(
[NotNull] IEntityType source,
[NotNull] IEntityType target,
[NotNull] DiffContext diffContext)
{
var sourceAnnotations = Annotations.For(source);
var targetAnnotations = Annotations.For(target);
var schemaChanged = sourceAnnotations.Schema != targetAnnotations.Schema;
var renamed = sourceAnnotations.TableName != targetAnnotations.TableName;
if (schemaChanged || renamed)
{
yield return(new RenameTableOperation
{
Schema = sourceAnnotations.Schema,
Name = sourceAnnotations.TableName,
NewSchema = schemaChanged ? targetAnnotations.Schema : null,
NewName = renamed ? targetAnnotations.TableName : null
});
}
diffContext.AddMapping(source, target);
var operations = Diff(GetPropertiesInHierarchy(source), GetPropertiesInHierarchy(target), diffContext)
.Concat(Diff(source.GetKeys(), target.GetKeys(), diffContext))
.Concat(Diff(GetIndexesInHierarchy(source), GetIndexesInHierarchy(target), diffContext));
foreach (var operation in operations)
{
yield return(operation);
}
}
protected virtual IEnumerable <MigrationOperation> Diff(
[NotNull] IEnumerable <IProperty> source,
[NotNull] IEnumerable <IProperty> target,
[NotNull] DiffContext diffContext)
=> DiffCollection(
source,
target,
(s, t) =>
{
diffContext.AddMapping(s, t);
return(Diff(s, t));
},
t => Add(t),
Remove,
(s, t) => string.Equals(s.Name, t.Name, StringComparison.OrdinalIgnoreCase),
(s, t) => string.Equals(
Annotations.For(s).ColumnName,
Annotations.For(t).ColumnName,
StringComparison.OrdinalIgnoreCase));