SQL-MAP是PDF.NET(PWMIS数据开发框架)具有特色的开发技术,它好将SQL语句映射成DAL代码,而且会一气呵成无需IDAL和DalFactory自动切换数据库暨另外一个数据库系统,比如SqlServer切换到Oralcle,有关SQL-MAP的正规伸手圈这里,为什么要使用这种技能,请圈“抽象SQL(参数化)查询
”。

   
从地方的科班看到,要手写一个SQL-MAP文件要比较复杂,虽然框架提供了SQL-MAP配置文件管理器,但她根本适用于新手用,用起来效率不是坏高,这个时段便需有一个好只能提示XML文件编制的东西了,这即是SqlMap.xsd,下面贴发拖欠公文之时髦完整内容:

 

XML 1XML 2SqlMap.XSD

<?xml version=”1.0″ encoding=”utf-8″ ?>
<xs:schema attributeFormDefault=”unqualified” elementFormDefault=”qualified” xmlns:xs=”http://www.w3.org/2001/XMLSchema"&gt;
    <xs:simpleType name=”enumCmdType” >
        <xs:restriction base =”xs:string”>
            <xs:enumeration value =”Text”></xs:enumeration>
            <xs:enumeration value =”StoredProcedure”></xs:enumeration>
            <xs:enumeration value =”Table”></xs:enumeration>
        </xs:restriction>
    </xs:simpleType>
    <xs:simpleType name=”enumResultClass” >
        <xs:restriction base =”xs:string”>
            <xs:enumeration value =”ValueType”></xs:enumeration>
            <xs:enumeration value =”DataSet”></xs:enumeration>
            <xs:enumeration value =”EntityObject”></xs:enumeration>
            <xs:enumeration value =”EntityList”></xs:enumeration>
        </xs:restriction>
    </xs:simpleType>
    <xs:simpleType name=”enumScriptType” >
        <xs:restriction base =”xs:string”>
            <xs:enumeration value =”Access”></xs:enumeration>
            <xs:enumeration value =”SqlServer”></xs:enumeration>
            <xs:enumeration value =”SqlServerCe”></xs:enumeration>
            <xs:enumeration value =”Oracle”></xs:enumeration>
            <xs:enumeration value =”DB2″></xs:enumeration>
            <xs:enumeration value =”Sysbase”></xs:enumeration>
            <xs:enumeration value =”MySql”></xs:enumeration>
            <xs:enumeration value =”SQLite”></xs:enumeration>
            <xs:enumeration value =”PostgreSQL”></xs:enumeration>
            <xs:enumeration value =”UNKNOWN”></xs:enumeration>
        </xs:restriction>
    </xs:simpleType>
    <xs:element name=”SqlMap”>
        <xs:complexType>
            <xs:sequence>
                <xs:element maxOccurs=”unbounded” name=”Script”>
                    <xs:complexType>
                         <xs:sequence>
                            <xs:element maxOccurs=”unbounded” name=”CommandClass”>
                                <xs:complexType>
                                    <xs:sequence>
                                        <xs:choice maxOccurs=”unbounded”>
                                            <xs:element maxOccurs=”unbounded” name=”Select”>
                                                <xs:complexType>
                                                    <xs:simpleContent>
                                                        <xs:extension base=”xs:string”>
                                                            <xs:attribute name=”CommandName” type=”xs:string” use=”required” />
                                                            <xs:attribute name=”CommandType” type=”enumCmdType” use=”required” />
                                                            <xs:attribute name=”Method” type=”xs:string” use=”required” />
                                                            <xs:attribute name=”Description” type=”xs:string” use=”required” />
                                                            <xs:attribute name=”ResultClass” type=”enumResultClass” use=”optional”  default=”DataSet”/>
                                                            <xs:attribute name=”ResultMap” type=”xs:string” use=”optional” />
                                                            <xs:attribute name=”SqlPage” type=”xs:string” use=”optional” default=”False”/>
                                                        </xs:extension>
                                                    </xs:simpleContent>
                                                </xs:complexType>
                                            </xs:element>
                                            <xs:element name=”Insert”>
                                                <xs:complexType>
                                                    <xs:simpleContent>
                                                        <xs:extension base=”xs:string”>
                                                            <xs:attribute name=”CommandName” type=”xs:string” use=”required” />
                                                            <xs:attribute name=”CommandType” type=”enumCmdType” use=”required” />
                                                            <xs:attribute name=”Method” type=”xs:string” use=”required” />
                                                            <xs:attribute name=”Description” type=”xs:string” use=”required” />
                                                        </xs:extension>
                                                    </xs:simpleContent>
                                                </xs:complexType>
                                            </xs:element>
                                            <xs:element name=”Update”>
                                                <xs:complexType>
                                                    <xs:simpleContent>
                                                        <xs:extension base=”xs:string”>
                                                            <xs:attribute name=”CommandName” type=”xs:string” use=”required” />
                                                            <xs:attribute name=”CommandType” type=”enumCmdType” use=”required” />
                                                            <xs:attribute name=”Method” type=”xs:string” use=”required” />
                                                            <xs:attribute name=”Description” type=”xs:string” use=”required” />
                                                        </xs:extension>
                                                    </xs:simpleContent>
                                                </xs:complexType>
                                            </xs:element>
                                            <xs:element name=”Delete”>
                                                <xs:complexType>
                                                    <xs:simpleContent>
                                                        <xs:extension base=”xs:string”>
                                                            <xs:attribute name=”CommandName” type=”xs:string” use=”required” />
                                                            <xs:attribute name=”CommandType” type=”enumCmdType” use=”required” />
                                                            <xs:attribute name=”Method” type=”xs:string” use=”required” />
                                                            <xs:attribute name=”Description” type=”xs:string” use=”required” />
                                                        </xs:extension>
                                                    </xs:simpleContent>
                                                </xs:complexType>
                                            </xs:element>
                                        </xs:choice>
                                    </xs:sequence>
                                    <xs:attribute name=”Name” type=”xs:string” use=”required” />
                                    <xs:attribute name=”Class” type=”xs:string” use=”required” />
                                    <xs:attribute name=”Interface” type=”xs:string” use=”optional” />
                                    <xs:attribute name=”Description” type=”xs:string” use=”required” />
                                </xs:complexType>
                            </xs:element>
                        </xs:sequence>
                        <xs:attribute name=”Type” type=”enumScriptType” use=”required”  />
                        <xs:attribute name=”Version” type=”xs:string” use=”optional” />
                        <xs:attribute name=”ConnectionString” type=”xs:string” use=”optional” />
                    </xs:complexType>
                </xs:element>
            </xs:sequence>
            <xs:attribute name=”EmbedAssemblySource” type=”xs:string” use=”optional” />
        </xs:complexType>
    </xs:element>
</xs:schema>

注意文件被的simpleType
,它意味着定义一个自定义的概括类型,在XSD文件的节点受到运用 type
属性来引用它即可。

正文中定义了三单从定义类型enumCmdType,enumResultClass,enumScriptType
,而且是枚举类型(使用xs:enumeration 定义),这样以XML文件中不怕足以起“下拉选择”的提醒作用了。

每当节点性被,use=”required”
表示要的特性,use=”optional”  表示只是选的属性。

方方面面XSD文件之编写而顾的吗就是这样多,编写起来还是比较简单的。

 

生矣是XSD文件,在树的Sql-Map配置文件的<sqlmap>
标签中,加入这XSD的采取声明,就会见到智能提醒的机能了。

 

<SqlMap  

        xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance”
        xsi:noNamespaceSchemaLocation=”SqlMap.xsd”>
<!– 以下面敲入尖括号,就能出现时节点区域外的当编写的始末,来试试看吧 –>

</SqlMap>

生了此SqlMap.config文件,就能使用代码生成器自动生成DAL代码了。

PDF.NET代码生成器下载地址(包含框架下的共同体示例),下载后请圈其中的证明。

设程序的数据库无法开拓,请看连接字符串是否对,或者以她附加到SQLSERVER实例上:

connectionString=”Data
Source=.\SQLEXPRESS;AttachDbFilename=~\App_Data\PDFTest.mdf;Integrated
Security=True;Connect Timeout=30;User Instance=True”

 

下载完成后,将本文的SqlMap.xsd内容复制下来别存为文件即可,注意文件目录,如果该XSD文件以及SqlMap.config文件不在和一个,需要改下面的门径:

xsi:noNamespaceSchemaLocation=”SqlMap.xsd”

 

关于PDF.NET框架的事无巨细内容,请圈本身的博客相关内容要查看官网:http://www.pwmis.com/sqlmap

 

 

 

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