public IEnumerable <Action> Compare(IEnumerable <TableInfo> schemaTables, IEnumerable <ColumnInfo> schemaColumns)
{
List <Action> results = new List <Action>();
if (CommandProvider.SupportsSchemas)
{
var createSchemas = GetNewSchemas(ModelTables, schemaTables);
results.AddRange(createSchemas.Select(s => new CreateSchema(s)));
}
var createTables = GetNewTables(ModelTables, schemaTables);
results.AddRange(createTables.Select(tbl => new CreateTable(tbl.ModelType)));
// when looking for modified columns, don't include tables that were just created
var existingModelColumns = ModelColumns.Where(col => !createTables.Contains(col.TableInfo));
var schemaColumnsByTable = schemaColumns.ToLookup(row => row.TableInfo);
var modelColumnsByTable = existingModelColumns.ToLookup(row => row.TableInfo);
var tablesToTypes = ModelTypes.ToDictionary(t => CommandProvider.GetTableInfo(t));
foreach (TableInfo tbl in schemaColumnsByTable)
{
if (AnyModifiedColumns(schemaColumnsByTable[tbl], modelColumnsByTable[tbl],
out IEnumerable <ColumnInfo> added, out IEnumerable <ColumnInfo> modified, out IEnumerable <ColumnInfo> deleted))
{
if (tbl.RowCount == 0)
{
// empty tables can be dropped and re-created
results.Add(new RebuildTable(tablesToTypes[tbl], added, modified, deleted));
}
else
{
// must modify columns directly
results.AddRange(added.Select(a => new AddColumn(a)));
results.AddRange(deleted.Select(d => new DropColumn(d)));
results.AddRange(modified.Select(m => new AlterColumn(m)));
}
}
}
//var addColumns = await GetNewColumnsAsync(ModelTypes, createTables.Concat(rebuiltTables), connection);
//results.AddRange(addColumns.Select(pi => new AddColumn(pi)));
var dropTables = GetDeletedTables(ModelTables, schemaTables);
results.AddRange(dropTables.Select(tbl => new DropTable(tbl)));
var newForeignKeys = ModelColumns.Where(col => createTables.Contains(col.TableInfo) && col.IsForeignKey);
results.AddRange(newForeignKeys.Select(col => new AddForeignKey(col.ForeignKeyInfo)));
return(results);
}
protected virtual MySqlParameter[] GetStoreValues(IBaseModel model)
{
int length = ModelColumns.Count();
MySqlParameter[] parameters = new MySqlParameter[length];
int counter = 0;
foreach (DbColumn column in ModelColumns)
{
parameters[counter++] = new MySqlParameter(column.Name, column.DbType)
{
Value = column.Property.GetValue(model)
};
}
return(parameters);
}
