dev-npgsql/npgsql: Npgsql is the .NET data provider for PostgreSQL.

src/Npgsql/ThrowHelper.cs
40 строк2 KB
Shay Rojansky
Use file-scoped namespaces (#4225)
18 дек 2021, 13:52
18 дек 2021, 13:5243756d1
using Npgsql.BackendMessages;
using System;
using System.Diagnostics.CodeAnalysis;
using System.Reflection;
using Npgsql.Internal.TypeHandling;

namespace Npgsql;

static class ThrowHelper
{
    [DoesNotReturn]
    internal static void ThrowInvalidCastException_NotSupportedType(NpgsqlTypeHandler handler, NpgsqlParameter? parameter, Type type)
    {
        var parameterName = parameter is null
            ? null
            : parameter.TrimmedName == string.Empty
                ? $"${parameter.Collection!.IndexOf(parameter) + 1}"
                : parameter.TrimmedName;

        throw new InvalidCastException(parameterName is null
            ? $"Cannot write a value of CLR type '{type}' as database type '{handler.PgDisplayName}'."
            : $"Cannot write a value of CLR type '{type}' as database type '{handler.PgDisplayName}' for parameter '{parameterName}'.");
    }

    [DoesNotReturn]
    internal static void ThrowInvalidCastException_NoValue(FieldDescription field) =>
        throw new InvalidCastException($"Column '{field.Name}' is null.");

    [DoesNotReturn]
    internal static void ThrowInvalidOperationException_NoPropertyGetter(Type type, MemberInfo property) =>
        throw new InvalidOperationException($"Composite type '{type}' cannot be written because the '{property}' property has no getter.");

    [DoesNotReturn]
    internal static void ThrowInvalidOperationException_NoPropertySetter(Type type, MemberInfo property) =>
        throw new InvalidOperationException($"Composite type '{type}' cannot be read because the '{property}' property has no setter.");

    [DoesNotReturn]
    internal static void ThrowInvalidOperationException_BinaryImportParametersMismatch(int columnCount, int valueCount) =>
        throw new InvalidOperationException($"The binary import operation was started with {columnCount} column(s), but {valueCount} value(s) were provided.");
}