private void FillRealTableSchema(ModifiedColumnsCollection cols)
{
var columns = cols.AllColumnsNames;
var all = _db.Query <ColumnSchema>(
@"select COLUMN_NAME as ColumnName, DATA_TYPE as DataType
, cast (CHARACTER_MAXIMUM_LENGTH as varchar(5))as CharacterMaximumLength, cast (NUMERIC_PRECISION as varchar(5)) as NumericPrecision, cast (NUMERIC_SCALE as varchar(5)) as NumericScale, COLLATION_NAME as CollationName from INFORMATION_SCHEMA.COLUMNS
where TABLE_NAME = @0 and COLUMN_NAME in (@1)", cols.TableName, columns);
foreach (var cs in all)
{
var column = cols[cs.ColumnName];
column.Modifications.Current.Type = ExtractType(cs);
column.Modifications.Current.Collation = cs.CollationName;
}
var defaults = _db.Query <dynamic>(@"select c.name as colname, d.name as defname
from sys.tables t
join
sys.default_constraints d
on d.parent_object_id = t.object_id
join
sys.columns c
on c.object_id = t.object_id
and c.column_id = d.parent_column_id
where t.name = @0
and c.name in (@1)", cols.TableName, columns);
foreach (var def in defaults)
{
var column = cols[def.colname];
column.Modifications.Current.DefaultConstraintName = def.defname;
}
}
private void FillRealTableSchema(ModifiedColumnsCollection cols)
{
var columns = cols.AllColumnsNames;
var all = _db.Query<ColumnSchema>(
@"select COLUMN_NAME as ColumnName, DATA_TYPE as DataType
, cast (CHARACTER_MAXIMUM_LENGTH as varchar(5))as CharacterMaximumLength, cast (NUMERIC_PRECISION as varchar(5)) as NumericPrecision, cast (NUMERIC_SCALE as varchar(5)) as NumericScale, COLLATION_NAME as CollationName from INFORMATION_SCHEMA.COLUMNS
where TABLE_NAME = @0 and COLUMN_NAME in (@1)", cols.TableName, columns);
foreach (var cs in all)
{
var column = cols[cs.ColumnName];
column.Modifications.Current.Type = ExtractType(cs);
column.Modifications.Current.Collation = cs.CollationName;
}
var defaults = _db.Query<dynamic>(@"select c.name as colname, d.name as defname
from sys.tables t
join
sys.default_constraints d
on d.parent_object_id = t.object_id
join
sys.columns c
on c.object_id = t.object_id
and c.column_id = d.parent_column_id
where t.name = @0
and c.name in (@1)", cols.TableName, columns);
foreach (var def in defaults)
{
var column = cols[def.colname];
column.Modifications.Current.DefaultConstraintName = def.defname;
}
}
private void Init(string name)
{
Name = name;
Options = new DbEngineOptions();
Columns = new ColumnsCollection();
Constraints = new ConstraintsCollection(this);
Indexes = new IndexCollection(this);
ModifiedColumns = new ModifiedColumnsCollection(name);
}
public override void Write(ModifiedColumnsCollection columns)
{
if (!columns.HasAnyChange)
{
return;
}
FillRealTableSchema(columns);
base.Write(columns);
}
public TableSchema(string name)
{
Name = name;
Options= new DbEngineOptions();
Columns= new ColumnsCollection();
Constraints = new ConstraintsCollection(this);
Indexes= new IndexCollection(this);
ModifiedColumns=new ModifiedColumnsCollection(name);
}
public virtual void Write(ModifiedColumnsCollection columns)
{
_columns = columns;
if (!columns.HasAnyChange) return;
var changes = columns.ChangedColumns;
foreach (var column in columns.Where(ShouldDropDefault))
{
Writer.WriteDropDefault(column);
}
foreach (var ch in changes.Where(c => c.HasChangedStructure))
{
Writer.WriteColumnChanges(ch);
}
foreach (var column in changes.Where(d => d.DefaultValue != null))
{
Writer.WriteSetDefault(column);
}
}
public virtual void Write(ModifiedColumnsCollection columns)
{
_columns = columns;
if (!columns.HasAnyChange)
{
return;
}
var changes = columns.ChangedColumns;
foreach (var column in columns.Where(ShouldDropDefault))
{
Writer.WriteDropDefault(column);
}
foreach (var ch in changes.Where(c => c.HasChangedStructure))
{
Writer.WriteColumnChanges(ch);
}
foreach (var column in changes.Where(d => d.DefaultValue != null))
{
Writer.WriteSetDefault(column);
}
}
public override void Write(ModifiedColumnsCollection columns)
{
if (!columns.HasAnyChange) return;
FillRealTableSchema(columns);
base.Write(columns);
}
