//******************************************************************************************************// UseEscapedNameAttribute.cs - Gbtc//// Copyright © 2016, Grid Protection Alliance. All Rights Reserved.//// Licensed to the Grid Protection Alliance (GPA) under one or more contributor license agreements. See// the NOTICE file distributed with this work for additional information regarding copyright ownership.// The GPA licenses this file to you under the MIT License (MIT), the "License"; you may// not use this file except in compliance with the License. You may obtain a copy of the License at://// http://opensource.org/licenses/MIT//// Unless agreed to in writing, the subject software distributed under the License is distributed on an// "AS-IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. Refer to the// License for the specific language governing permissions and limitations.//// Code Modification History:// ----------------------------------------------------------------------------------------------------// 04/29/2016 - J. Ritchie Carroll// Generated original version of source code.////****************************************************************************************************** using System; namespace GSF.Data.Model{ /// <summary> /// Defines an attribute that will request use of the escaped name of a modeled identifier, i.e., /// a table or field name. Typically needed when identifier names are reserved SQL key words. /// </summary> /// <remarks> /// Applying [UseEscapedName] to a modeled table or field with no parameters will specify that an /// escaped name be used for all database types. Using a specific database type as a parameter /// to the attribute, e.g., [UseEscapedName(DatabaseType.SQLServer)], means the escaped name will /// only be applied to the specific database - however, the attribute allows multiple instances /// on the same identifier so you could specify that escaping only be applied to two databases, /// for example: [UseEscapedName(DatabaseType.SQLServer), UseEscapedName(DatabaseType.MySQL)]. /// In the event multiple attributes have been applied to a modeled identifier where one instance /// has specified no target database type and others have, the system will assume to target all /// databases for escaping the name and ignore the specific targets. /// </remarks> [AttributeUsage(AttributeTargets.Class | AttributeTargets.Property, AllowMultiple = true)] public sealed class UseEscapedNameAttribute : Attribute { /// <summary> /// Gets target <see cref="DatabaseType"/> for using escaped name. /// </summary> /// <remarks> /// When value is <c>null</c>, escaped name will be applied to all database types. /// </remarks> public DatabaseType? TargetDatabaseType { get; } /// <summary> /// Gets or sets flag that determines if double quotes should be used as the identifier delimiter, /// per SQL-99 standard, regardless of database type. Defaults to <c>true</c> except for MySQL. /// </summary> /// <remarks> /// If <c>true</c>, ANSI standard double-quotes will be used for escaping the identifier; otherwise, /// the escaping identifier will be based on the connected database type. /// </remarks> public bool UseAnsiQuotes { get; set; } /// <summary> /// Creates a new <see cref="UseEscapedNameAttribute"/> that will request use of escaped name for any database. /// </summary> public UseEscapedNameAttribute() { TargetDatabaseType = null; UseAnsiQuotes = true; } /// <summary> /// Creates a new <see cref="UseEscapedNameAttribute"/> that will request use of escaped name for the /// specified <see cref="DatabaseType"/>. /// </summary> /// <param name="targetDatabaseType">Target <see cref="DatabaseType"/> for escaping identifier.</param> public UseEscapedNameAttribute(DatabaseType targetDatabaseType) { TargetDatabaseType = targetDatabaseType; UseAnsiQuotes = targetDatabaseType != DatabaseType.MySQL; } }}
//******************************************************************************************************
// UseEscapedNameAttribute.cs - Gbtc
//
// Copyright © 2016, Grid Protection Alliance. All Rights Reserved.
//
// Licensed to the Grid Protection Alliance (GPA) under one or more contributor license agreements. See
// the NOTICE file distributed with this work for additional information regarding copyright ownership.
// The GPA licenses this file to you under the MIT License (MIT), the "License"; you may
// not use this file except in compliance with the License. You may obtain a copy of the License at:
//
// http://opensource.org/licenses/MIT
//
// Unless agreed to in writing, the subject software distributed under the License is distributed on an
// "AS-IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. Refer to the
// License for the specific language governing permissions and limitations.
//
// Code Modification History:
// ----------------------------------------------------------------------------------------------------
// 04/29/2016 - J. Ritchie Carroll
// Generated original version of source code.
//
//******************************************************************************************************
using System;
namespace GSF.Data.Model
{
/// <summary>
/// Defines an attribute that will request use of the escaped name of a modeled identifier, i.e.,
/// a table or field name. Typically needed when identifier names are reserved SQL key words.
/// </summary>
/// <remarks>
/// Applying [UseEscapedName] to a modeled table or field with no parameters will specify that an
/// escaped name be used for all database types. Using a specific database type as a parameter
/// to the attribute, e.g., [UseEscapedName(DatabaseType.SQLServer)], means the escaped name will
/// only be applied to the specific database - however, the attribute allows multiple instances
/// on the same identifier so you could specify that escaping only be applied to two databases,
/// for example: [UseEscapedName(DatabaseType.SQLServer), UseEscapedName(DatabaseType.MySQL)].
/// In the event multiple attributes have been applied to a modeled identifier where one instance
/// has specified no target database type and others have, the system will assume to target all
/// databases for escaping the name and ignore the specific targets.
/// </remarks>
[AttributeUsage(AttributeTargets.Class | AttributeTargets.Property, AllowMultiple = true)]
public sealed class UseEscapedNameAttribute : Attribute
{
/// <summary>
/// Gets target <see cref="DatabaseType"/> for using escaped name.
/// </summary>
/// <remarks>
/// When value is <c>null</c>, escaped name will be applied to all database types.
/// </remarks>
public DatabaseType? TargetDatabaseType
{
get;
}
/// <summary>
/// Gets or sets flag that determines if double quotes should be used as the identifier delimiter,
/// per SQL-99 standard, regardless of database type. Defaults to <c>true</c> except for MySQL.
/// </summary>
/// <remarks>
/// If <c>true</c>, ANSI standard double-quotes will be used for escaping the identifier; otherwise,
/// the escaping identifier will be based on the connected database type.
/// </remarks>
public bool UseAnsiQuotes
{
get;
set;
}
/// <summary>
/// Creates a new <see cref="UseEscapedNameAttribute"/> that will request use of escaped name for any database.
/// </summary>
public UseEscapedNameAttribute()
{
TargetDatabaseType = null;
UseAnsiQuotes = true;
}
/// <summary>
/// Creates a new <see cref="UseEscapedNameAttribute"/> that will request use of escaped name for the
/// specified <see cref="DatabaseType"/>.
/// </summary>
/// <param name="targetDatabaseType">Target <see cref="DatabaseType"/> for escaping identifier.</param>
public UseEscapedNameAttribute(DatabaseType targetDatabaseType)
{
TargetDatabaseType = targetDatabaseType;
UseAnsiQuotes = targetDatabaseType != DatabaseType.MySQL;
}
}
}