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我正在尝试开发 CodeFluent 方面来将实体的属性设置为全文索引。

我找到了这个链接,它的作用类似于我的目标。 http://blog.codefluententities.com/2012/11/27/using-the-sql-server-template-producer-to-generate-clustered-indexes/

但是,这使用 SQL 模板生成器。无论如何都可以将属性设置为完全在方面本身中的全文索引,因此我不必为所有项目安装/维护模板生成器和方面?

这是我到目前为止的 C# 方面代码:

    public class FullTextIndexing : IProjectTemplate
    {
        public static readonly XmlDocument Descriptor;
        public const string Namespace = "http://www.softfluent.com/aspects/samples/FullTextIndexing";

        static FullTextIndexing()
        {
            Descriptor = new XmlDocument();
            Descriptor.LoadXml(
@"<cf:project xmlns:cf='http://www.softfluent.com/codefluent/2005/1' defaultNamespace='FullTextIndexing'>
    <cf:pattern name='Full Text Indexing' namespaceUri='" + Namespace + @"' preferredPrefix='fti' step='Tables'>
        <cf:message class='_doc'>CodeFluent Full Text Indexing Aspect</cf:message>
        <cf:descriptor name='fullTextIndexing'
            typeName='boolean'
            category='Full Text Indexing'
            targets='Property'
            defaultValue='false'
            displayName='Full-Text Index'
            description='Determines if property should be full text indexed.' />
    </cf:pattern>
</cf:project>");
        }

        public Project Project { get; set; }

        public XmlDocument Run(IDictionary context)
        {
            if (context == null || !context.Contains("Project"))
            {
                // we are probably called for meta data inspection, so we send back the descriptor xml
                return Descriptor;
            }

            // the dictionary contains at least these two entries
            Project = (Project)context["Project"];

            // the dictionary contains at least these two entries
            XmlElement element = (XmlElement)context["Element"];
            Project project = (Project)context["Project"];

            foreach (Entity entity in project.Entities)
            {
                Console.WriteLine(">>PROPERTY LOGGING FOR ENTITY "+entity.Name.ToUpper()+":<<");
                foreach (Property property in entity.Properties)
                {
                    Log(property);
                    if(MustFullTextIndex(property))
                    {
                        Console.WriteLine("CHANGING PROPERTY");
                        property.TypeName = "bool";
                        Log(property);
                    }
                }
            }

            // we have no specific Xml to send back, but aspect description
            return Descriptor;
        }

        private static bool MustFullTextIndex(Property property)
        {
            return property != null && property.IsPersistent && property.GetAttributeValue("fullTextIndexing", Namespace, false);
        }

        private static void Log(Property property)
        {
            Console.WriteLine(property.Trace());
        }
    }

编辑一:

按照 Meziantou 的回答,我正在尝试创建一个模板生产者,但是当我尝试将新的模板生产者添加到项目生产者列表时,它给了我编译错误,所以我可能做错了。

错误说:

Cannot convert type 'CodeFluent.Model.Producer' to 'CodeFluent.Producers.SqlServer.TemplateProducer'

这是我到目前为止的代码:

public XmlDocument Run(IDictionary context)
{
    if (context == null || !context.Contains("Project"))
    {
        // we are probably called for meta data inspection, so we send back the descriptor xml
        return Descriptor;
    }

    // the dictionary contains at least these two entries
    XmlElement element = (XmlElement)context["Element"];
    Project project = (Project)context["Project"];

    CodeFluent.Producers.SqlServer.TemplateProducer producer = new CodeFluent.Producers.SqlServer.TemplateProducer();
    producer.AddNamespace("CodeFluent.Model");
    producer.AddNamespace("CodeFluent.Model.Persistence");
    producer.AddNamespace("CodeFluent.Producers.SqlServer");

    Console.WriteLine(producer.Element);
    //TODO: Need to figure out how to modify the actual template's contents

    project.Producers.Add(producer); //Error happens here


    // we have no specific Xml to send back, but aspect description
    return Descriptor;
}
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1 回答 1

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在示例代码中,仅使用方面是因为它具有描述符。CodeFluent 实体使用描述符来填充属性网格:

<cf:descriptor name="IsClusteredIndex" typeName="boolean" targets="Property" defaultValue="false" displayName="IsClusteredIndex" />

因此,当您将此属性的值设置为 true 或 false 时,会ns:IsClusteredIndex在 xml 文件中添加或删除 xml 属性。

然后 SQL 模板读取属性的值以生成预期的 SQL 文件:

property.GetAttributeValue("sa:IsClusteredIndex", false)

所以方面不是强制性的,但提供了一种图形界面友好的方式来添加/删除属性。如果您不需要集成到图形界面中,您可以安全地移除方面。

如果您的目标是集成到图形界面中,则需要一个方面(XML 或 DLL)或生产者。如果您不想创建生产者,可以将模板嵌入到您的方面。在构建过程中,您可以提取 SQL 模板并将 SQL 模板生产者添加到项目中,这样所有内容都位于方面。

于 2016-03-10T10:37:56.210 回答