#region License

// The PostgreSQL License

//

// Copyright (C) 2017 The Npgsql Development Team

//

// Permission to use, copy, modify, and distribute this software and its

// documentation for any purpose, without fee, and without a written

// agreement is hereby granted, provided that the above copyright notice

// and this paragraph and the following two paragraphs appear in all copies.

//

// IN NO EVENT SHALL THE NPGSQL DEVELOPMENT TEAM BE LIABLE TO ANY PARTY

// FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,

// INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS

// DOCUMENTATION, EVEN IF THE NPGSQL DEVELOPMENT TEAM HAS BEEN ADVISED OF

// THE POSSIBILITY OF SUCH DAMAGE.

//

// THE NPGSQL DEVELOPMENT TEAM SPECIFICALLY DISCLAIMS ANY WARRANTIES,

// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY

// AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS

// ON AN "AS IS" BASIS, AND THE NPGSQL DEVELOPMENT TEAM HAS NO OBLIGATIONS

// TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

#endregion

using JetBrains.Annotations;

namespace Npgsql.PostgresTypes

{

/// <summary>

/// Represents a PostgreSQL range data type.

/// </summary>

/// <remarks>

/// See https://www.postgresql.org/docs/current/static/rangetypes.html.

/// </remarks>

public class PostgresRangeType : PostgresType

{

/// <summary>

/// The PostgreSQL data type of the subtype of this range.

/// </summary>

[PublicAPI]

public PostgresType Subtype { get; }

/// <summary>

/// Constructs a representation of a PostgreSQL range data type.

/// </summary>

protected internal PostgresRangeType(string ns, string name, uint oid, PostgresType subtypePostgresType)

: base(ns, name, oid)

{

Subtype = subtypePostgresType;

if (subtypePostgresType.NpgsqlDbType.HasValue)

NpgsqlDbType = NpgsqlTypes.NpgsqlDbType.Range | subtypePostgresType.NpgsqlDbType;

Subtype.Range = this;

}

internal override TypeHandler Activate(TypeHandlerRegistry registry)

{

TypeHandler subtypeHandler;

if (!registry.TryGetByOID(Subtype.OID, out subtypeHandler))

{

// Subtype hasn't been set up yet, do it now

subtypeHandler = Subtype.Activate(registry);

}

var handler = subtypeHandler.CreateRangeHandler(this);

registry.ByOID[OID] = handler;

if (NpgsqlDbType.HasValue)

registry.ByNpgsqlDbType.Add(NpgsqlDbType.Value, handler);

registry.ByType[handler.GetFieldType()] = handler;

return handler;

}

}

}