protected virtual AlterDatabaseOperation PostFilterOperation(AlterDatabaseOperation operation)
{
HandleCharSetDelegation(operation, DelegationModes.ApplyToDatabases);
ApplyCollationAnnotation(operation, (operation, collation) => operation.Collation ??= collation);
ApplyCollationAnnotation(operation.OldDatabase, (operation, collation) => operation.Collation ??= collation);
HandleCollationDelegation(operation, DelegationModes.ApplyToDatabases, o => o.Collation = null);
// Ensure, that no properties have been added by the EF Core team in the meantime.
// If they have, they need to be checked below.
AssertMigrationOperationProperties(
operation,
new[]
{
nameof(AlterDatabaseOperation.OldDatabase),
nameof(AlterDatabaseOperation.Collation),
});
// Ensure, that this hasn't become an empty operation.
return(operation.Collation != operation.OldDatabase.Collation ||
operation.IsReadOnly != operation.OldDatabase.IsReadOnly ||
HasDifferences(operation.GetAnnotations(), operation.OldDatabase.GetAnnotations())
? operation
: null);
}
protected virtual void Generate([NotNull] AlterDatabaseOperation operation, [NotNull] IndentedStringBuilder builder)
{
Check.NotNull(operation, nameof(operation));
Check.NotNull(builder, nameof(builder));
builder.Append(".AlterDatabase()");
using (builder.Indent())
{
Annotations(operation.GetAnnotations(), builder);
OldAnnotations(operation.OldDatabase.GetAnnotations(), builder);
}
}