Question

我在PostgreSQL上使用fluentnhibernate。 Fluentnhibernate是最新版本。 PosrgreSQL版本是8.4。我创建ISessionFactory的代码：

public static ISessionFactory CreateSessionFactory()
{
        string connectionString = ConfigurationManager.ConnectionStrings["PostgreConnectionString"].ConnectionString;
        IPersistenceConfigurer config = PostgreSQLConfiguration.PostgreSQL82.ConnectionString(connectionString);

        FluentConfiguration configuration = Fluently
            .Configure()
            .Database(config)
            .Mappings(m =>
                m.FluentMappings.Add(typeof(ResourceMap))                                    
                                .Add(typeof(TaskMap))
                                .Add(typeof(PluginMap)));
        var nhibConfig = configuration.BuildConfiguration();
        SchemaMetadataUpdater.QuoteTableAndColumns(nhibConfig);
        return configuration.BuildSessionFactory();
}

当我在SchemaMetadataUpdater.QuoteTableAndColumns（nhibConfig）行执行代码时; throw error：System.NotSupportedException：不支持指定的方法。请帮帮我！我非常需要解决方案。最好的问候

Answer 1

试试这个：

public static ISessionFactory CreateSessionFactory()
{
        string connectionString = ConfigurationManager.ConnectionStrings["PostgreConnectionString"].ConnectionString;
        IPersistenceConfigurer config = PostgreSQLConfiguration.PostgreSQL82.ConnectionString(connectionString);

        FluentConfiguration configuration = Fluently
            .Configure()
            .Database(config)
            .Mappings(m =>
                m.FluentMappings.Add(typeof(ResourceMap))                                    
                                .Add(typeof(TaskMap))
                                .Add(typeof(PluginMap)));
        configuration.ExposeConfiguration(x => x.SetProperty("hbm2ddl.keywords", "auto-quote"));
        return configuration.BuildSessionFactory();
}

Answer 2

SchemaMetadataUpdater.QuoteTableAndColumns（nhibConfig）;
configuration.ExposeConfiguration（x =＆gt; x.SetProperty（“hbm2ddl.keywords”，“auto-quote”））;

我上面都试过了。最新的Fluent NHibernate（5f7adcd）和最新的postgresql 8.4对我来说无效。 Fluent NHibernate将这两者静音可能。如果你使用 NHibernate和HBM没有Fluent，它适合你。

为了明确要求Fluent NHibernate为表和列生成引用标识符，我在Fluent NHibernate源代码中修补了两个文件以强制它为postgresql工作。（如果您不需要为其他数据库使用相同的构建）

命名空间：FluentNHibernate.MappingModel.Output

在 XmlClassWriter.cs

中为表名添加“引用”

if (classMapping.HasValue(x => x.TableName))
  classElement.WithAtt("table", new System.Text.StringBuilder().Append("\"").Append(classMapping.TableName).Append("\"").ToString());

在 XmlColumnWriter.cs

的列名称中添加“引用”

if (columnMapping.HasValue(x => x.Name))
  element.WithAtt("name", new System.Text.StringBuilder().Append("\"").Append(columnMapping.Name).Append("\"").ToString());

到目前为止，这就像魅力一样。获取http://github.com/jagregory/fluent-nhibernate的来源并通过以上更新建立自己的。

Answer 3

创建自定义命名约定，覆盖列名约定以包含quote。

var fluentConfig = Fluently.Configure(new     Configuration().SetNamingStrategy(PostgreNamingStragegy.Instance))

internal class PostgreNamingStragegy: INamingStrategy
    {
    private static readonly INamingStrategy ImprovedNamingStrategy = NHibernate.Cfg.ImprovedNamingStrategy.Instance;

    private static PostgreNamingStragegy_postgreNamingStrategy;
    public static INamingStrategy Instance
    {
        get { return _postgreNamingStrategy?? (_postgreNamingStrategy= new PostgreNamingStragegy()); }
    }

    protected PostgreNamingStragegy()
    {
    }

    public string ClassToTableName(string className)
    {
        return ImprovedNamingStrategy.ClassToTableName(className);
    }

    public string ColumnName(string columnName)
    {
        return "\"" + columnName + "\"";
    }

    public string LogicalColumnName(string columnName, string propertyName)
    {
        return ImprovedNamingStrategy.LogicalColumnName(columnName, propertyName);
    }

    public string PropertyToColumnName(string propertyName)
    {
        return ImprovedNamingStrategy.PropertyToColumnName(propertyName);
    }

    public string PropertyToTableName(string className, string propertyName)
    {
        return ImprovedNamingStrategy.PropertyToTableName(className, propertyName);
    }

    public string TableName(string tableName)
    {
        return ImprovedNamingStrategy.TableName(tableName);
    }
}

Fluent NHibernate和PostgreSQL，SchemaMetadataUpdater.QuoteTableAndColumns - System.NotSupportedException：不支持指定的方法

3 个答案: