使用 Fluent NHibernate 映射大字符串

发布于 2024-09-06 22:50:51 字数 621 浏览 5 评论 0原文

我正在使用 Oracle DB，并且正在尝试映射此类：

public class Book
{
    public virtual int Id { get; private set; }
    public virtual string Author { get; set; }
    public virtual string Title { get; set; }
    public virtual string Text { get; set; }
}

使用此映射类：

public class BookMap : ClassMap<Book>
{
    public BookMap()
    {
        Id(x => x.Id);
        Map(x => x.Author);
        Map(x => x.Title);
        Map(x => x.Text);
    }
}

但它生成的列类型是 NVARCHAR(255)，并且 Book.Text属性的字符数远远超过 255 个。

如何将其映射到可以包含非常大字符串的类型（例如 CLOB）？

原文

I'm working with an Oracle DB, and I'm trying to map this class:

public class Book
{
    public virtual int Id { get; private set; }
    public virtual string Author { get; set; }
    public virtual string Title { get; set; }
    public virtual string Text { get; set; }
}

With this mapping class:

public class BookMap : ClassMap<Book>
{
    public BookMap()
    {
        Id(x => x.Id);
        Map(x => x.Author);
        Map(x => x.Title);
        Map(x => x.Text);
    }
}

But the column type that it generates me is NVARCHAR(255), And the Book.Text Property has much more than 255 characters.

How can I map it to a type that can contain a very large string (for example CLOB)?

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乱了心跳 2024-09-13 22:50:51

public class BookMap : ClassMap<Book>
{
    public BookMap()
    {
        Id(x => x.Id);
        Map(x => x.Author);
        Map(x => x.Title);
        Map(x => x.Text).CustomSqlType("CLOB");
    }
}

或者

public class BookMap : ClassMap<Book>
{
    public BookMap()
    {
        Id(x => x.Id);
        Map(x => x.Author);
        Map(x => x.Title);
        Map(x => x.Text).Length(500);  // nvarchar(500)
    }
}

public class BookMap : ClassMap<Book>
{
    public BookMap()
    {
        Id(x => x.Id);
        Map(x => x.Author);
        Map(x => x.Title);
        Map(x => x.Text).CustomSqlType("CLOB");
    }
}

public class BookMap : ClassMap<Book>
{
    public BookMap()
    {
        Id(x => x.Id);
        Map(x => x.Author);
        Map(x => x.Title);
        Map(x => x.Text).Length(500);  // nvarchar(500)
    }
}

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