private void ReloadDefinition()
{
using (DataTable tbl = _connection.GetSchema("Tables", new string[] { Catalog, null, Name }))
{
if (tbl.Rows.Count > 0)
{
_exists = true;
_origSql = tbl.Rows[0]["TABLE_DEFINITION"].ToString().Trim().TrimEnd(';');
_oldname = Name;
}
else
{
_exists = false;
return;
}
}
_indexes.Clear();
_oldindexes.Clear();
using (DataTable tbl = _connection.GetSchema("Indexes", new string[] { Catalog, null, Name }))
{
foreach (DataRow row in tbl.Rows)
{
if ((bool)row["PRIMARY_KEY"] == false)
{
if (row["INDEX_NAME"].ToString().StartsWith("sqlite_", StringComparison.OrdinalIgnoreCase) == false)
{
_indexes.Add(new Index(_connection, this, row));
_oldindexes.Add(new Index(_connection, this, row));
}
}
else if (_key == null)
{
_key = new PrimaryKey(_connection, this, row);
}
}
}
_check.Clear();
StringBuilder builder = new StringBuilder();
SimpleTokenizer.StringParts[] arr = SimpleTokenizer.BreakString(_origSql);
for (int n = 0; n < arr.Length - 3; n++)
{
if (arr[n].keyword == "CONSTRAINT")
{
builder.Length = 0;
int x;
for (x = 1; x < 3; x++)
{
if (arr[n + x].keyword == "CHECK")
break;
}
if (x == 3)
{
n += 2;
continue;
}
x += n + 1;
int depth = arr[n].depth;
int basedepth = arr[x].depth;
for (; x < arr.Length; x++)
{
if (arr[x].depth < basedepth)
break;
if (builder.Length > 0)
builder.Append(" ");
while (depth < arr[x].depth)
{
builder.Append("(");
depth++;
}
while (depth > arr[x].depth)
{
builder.Append(")");
depth--;
}
if (String.IsNullOrEmpty(arr[x].quote) == false)
builder.Append(arr[x].quote[0]);
builder.Append(arr[x].value);
if (String.IsNullOrEmpty(arr[x].quote) == false)
builder.Append(arr[x].quote[1]);
if (arr[x].sep == true) break;
}
while (depth > arr[n].depth)
{
builder.Append(")");
depth--;
}
n = x;
_check.Add(builder.ToString());
}
}
builder.Length = 0;
builder.AppendLine("-- Original table schema");
builder.Append(_origSql);
builder.AppendLine(";");
foreach (Index idx in _oldindexes)
{
builder.AppendFormat("{0};\r\n", idx.OriginalSql);
}
_triggers.Clear();
_oldtriggers.Clear();
using (DataTable tbl = _connection.GetSchema("Triggers", new string[] { Catalog, null, Name }))
{
foreach (DataRow row in tbl.Rows)
{
Trigger t = new Trigger(this, row);
_triggers.Add(t);
_oldtriggers.Add(((ICloneable)t).Clone() as Trigger);
builder.AppendFormat("{0};\r\n", t.OriginalSql);
}
}
_origSql = builder.ToString();
}
protected Trigger(Trigger source)
{
_triggerOccurs = source._triggerOccurs;
_type = source._type;
//_eachRow = source._eachRow;
_when = source._when;
_table = source._table;
_name = source._name;
_columns = source._columns;
_action = source._action;
_dirty = source._dirty;
}