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using System;
using System.Data.Common;
using System.IO;
using System.Net.Sockets;
using System.Runtime.Serialization;
namespace Npgsql;
/// <summary>
/// The exception that is thrown when server-related issues occur.
/// </summary>
/// <remarks>
/// PostgreSQL errors (e.g. query SQL issues, constraint violations) are raised via
/// <see cref="PostgresException"/> which is a subclass of this class.
/// Purely Npgsql-related issues which aren't related to the server will be raised
/// via the standard CLR exceptions (e.g. ArgumentException).
/// </remarks>
[Serializable]
public class NpgsqlException : DbException
{
/// <summary>
/// Initializes a new instance of the <see cref="NpgsqlException"/> class.
/// </summary>
public NpgsqlException() {}
/// <summary>
/// Initializes a new instance of the <see cref="NpgsqlException"/> class with a specified error message and a reference to the inner exception that is the cause of this exception.
/// </summary>
/// <param name="message">The error message that explains the reason for the exception.</param>
/// <param name="innerException">The exception that is the cause of the current exception, or a null reference (<string>Nothing</string> in Visual Basic) if no inner exception is specified.</param>
public NpgsqlException(string? message, Exception? innerException)
: base(message, innerException) {}
/// <summary>
/// Initializes a new instance of the <see cref="NpgsqlException"/> class with a specified error message.
/// </summary>
/// <param name="message">The message that describes the error.</param>
public NpgsqlException(string? message)
: base(message) { }
/// <summary>
/// Specifies whether the exception is considered transient, that is, whether retrying the operation could
/// succeed (e.g. a network error or a timeout).
/// </summary>
public override bool IsTransient
=> InnerException is IOException or SocketException or TimeoutException or NpgsqlException { IsTransient: true };
/// <inheritdoc cref="DbException.BatchCommand"/>
/// <remarks>This property is <c>null</c> unless <see cref="NpgsqlConnectionStringBuilder.IncludeFailedBatchedCommand"/> in connection string is set to <c>true</c>.</remarks>
public new NpgsqlBatchCommand? BatchCommand { get; set; }
/// <inheritdoc/>
protected override DbBatchCommand? DbBatchCommand => BatchCommand;
#region Serialization
/// <summary>
/// Initializes a new instance of the <see cref="NpgsqlException"/> class with serialized data.
/// </summary>
/// <param name="info">The SerializationInfo that holds the serialized object data about the exception being thrown.</param>
/// <param name="context">The StreamingContext that contains contextual information about the source or destination.</param>
[Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.")]
protected internal NpgsqlException(SerializationInfo info, StreamingContext context) : base(info, context) {}
#endregion
}