public DbCommand CreateUpdateCommand(string tableName, WhereClip where, string[] columns, DbType[] types, object[] values) { DbCommand cmd = fac.CreateCommand(); cmd.CommandType = CommandType.Text; StringBuilder sb = new StringBuilder("UPDATE "); sb.Append(leftToken); sb.Append(tableName.TrimStart(leftToken).TrimEnd(rightToken)); sb.Append(rightToken); sb.Append(' '); sb.Append("SET "); for (int i = 0; i < columns.Length; ++i) { if (columns[i].Trim()[0] == '[') { sb.Append(columns[i].Replace("[", leftToken.ToString()).Replace("]", rightToken.ToString())); } else { sb.Append(leftToken); sb.Append(columns[i].TrimStart(leftToken).TrimEnd(rightToken)); sb.Append(rightToken); } sb.Append('='); if (values[i] != null && values[i] is ExpressionClip) { ExpressionClip expr = (ExpressionClip)values[i]; sb.Append(expr.ToString()); AddExpressionParameters(expr, cmd); } else { string paramName = MakeUniqueParamNameWithPrefixToken(); sb.Append(paramName); DbParameter p = cmd.CreateParameter(); p.ParameterName = paramName; p.DbType = types[i]; p.Value = GetValue(p.DbType, values[i]); cmd.Parameters.Add(p); } if (i < columns.Length - 1) { sb.Append(','); } } if ((!WhereClip.IsNullOrEmpty(where)) && where.Sql.Length > 0) { sb.Append(" WHERE "); sb.Append(SqlQueryUtils.RemoveTableAliasNamePrefixes(where.Sql)); AddExpressionParameters(where, cmd); } cmd.CommandText = SqlQueryUtils.ReplaceDatabaseTokens(sb.ToString(), leftToken, rightToken, paramPrefixToken, wildcharToken, wildsinglecharToken); PrepareCommand(cmd); return(cmd); }
public DbCommand CreateDeleteCommand(string tableName, WhereClip where) { DbCommand cmd = fac.CreateCommand(); cmd.CommandType = CommandType.Text; StringBuilder sb = new StringBuilder("DELETE FROM "); sb.Append(leftToken); sb.Append(tableName.TrimStart(leftToken).TrimEnd(rightToken)); sb.Append(rightToken); if ((!WhereClip.IsNullOrEmpty(where)) && where.Sql.Length > 0) { sb.Append(" WHERE "); sb.Append(SqlQueryUtils.RemoveTableAliasNamePrefixes(where.Sql)); AddExpressionParameters(where, cmd); } cmd.CommandText = SqlQueryUtils.ReplaceDatabaseTokens(sb.ToString(), leftToken, rightToken, paramPrefixToken, wildcharToken, wildsinglecharToken); PrepareCommand(cmd); return(cmd); }