NHibernate ORM of Inherit Tree

NHibernate ORM of Inherit Tree

 

UML:

public abstract class GenDocument

public sealed class Document : GenDocument

public sealed class NoticeDocument : GenDocument

 

Mapping Define:

<class name="GenDocument" table="GenDocs">
    <id name="ID" column="OBID">
        <generator class="uuid.hex" />
    </id>

    <timestamp name="LastUpdated" />

    <property name="DocumentName" column="DocumentName" />
    <property name="Revision" column="Revision" />
    <property name="Sequence" column="Sequence" />
    <property name="Workflow" column="Workflow" />
    <property name="OwnerName" column="OwnerName" />
    <property name="LcStatus" column="LcStatus" />
    <property name="CreatedBy" column="CreatedBy" />
    <property name="CreatedDate" column="CreatedDate" />
    <property name="UpdatedBy" column="UpdatedBy" />

</class>

 

<class name="Document" table="Documents">
    <id name="ID" column="OBID">
        <generator class="uuid.hex" />
    </id>

    <timestamp name="LastUpdated" />

    <property name="DocumentName" column="DocumentName" />
    <property name="Revision" column="Revision" />
    <property name="Sequence" column="Sequence" />
    <property name="Workflow" column="Workflow" />
    <property name="OwnerName" column="OwnerName" />
    <property name="LcStatus" column="LcStatus" />
    <property name="CreatedBy" column="CreatedBy" />
    <property name="CreatedDate" column="CreatedDate" />
    <property name="UpdatedBy" column="UpdatedBy" />

</class>

 

<class name="NoticeDocument" table="NoticeDocuments">
    <id name="ID" column="OBID">
        <generator class="uuid.hex" />
    </id>

    <timestamp name="LastUpdated" />

    <property name="DocumentName" column="DocumentName" />
    <property name="Revision" column="Revision" />
    <property name="Sequence" column="Sequence" />
    <property name="Workflow" column="Workflow" />
    <property name="OwnerName" column="OwnerName" />
    <property name="LcStatus" column="LcStatus" />
    <property name="Content" column="Content" />
    <property name="CreatedBy" column="CreatedBy" />
    <property name="CreatedDate" column="CreatedDate" />
    <property name="UpdatedBy" column="UpdatedBy" />

</class>

 

Code:

 

IDaoFactory factory = GetDaoFactory();

 

/* create an transient object of Document */

Document document = new Document();

document.DocumentName = "document #1";

document.Revision = "A";

document.Sequence = 1;

document.OwnerName = "alan";

document.CreatedBy = "alan";

 

/* persist the Document object */

IDocumentDao documentDao = factory.GetDocumentDao();

documentDao.Save(document);

documentDao.Commit();

documentDao.Dispose();

 

/* create an transient object of NoticeDocument */

NoticeDocument noticeDocument = new NoticeDocument();

noticeDocument.DocumentName = "notice #1";

noticeDocument.Revision = "A";

noticeDocument.Sequence = 1;

noticeDocument.OwnerName = "alan";

noticeDocument.CreatedBy = "alan";

noticeDocument.Content = "notice body of notice #1";

 

/* persist the NoticeDocument object */

INoticeDocumentDao noticeDocumentDao = factory.GetNoticeDocumentDao();

noticeDocumentDao.Save(noticeDocument);

noticeDocumentDao.Commit();

noticeDocumentDao.Dispose();

 

/* Load All by GenDocument Data Access Object */

IGenDocumentDao genDocumentDao = factory.GetGenDocumentDao();

IList genDocs = genDocumentDao.GetAll();

genDocs.Dispose();

/*

 * GenDocument的数据访问函数应该在GetAll函数中返回所有

 * 它本身的对象以及其子类的对象

 */

Assert.AreEqual(2, genDocs.Count);

 

/* Load All by Document Data Access Object */

documentDao = factory.GetDocumentDao();

IList documents = documentDao.GetAll();

documentDao.Dispose();

/*

 * Document的数据访问函数应该在GetAll函数中返回所有

 * 它本身的对象，建议将Document class定义为sealed

 * 避免继承它

 */

Assert.AreEqual(1, documents.Count);

Assert.AreEqual("document #1", ((Document)documents[0]).DocumentName);

 

/* Load All by NoticeDocument Data Access Object */

noticeDocumentDao = factory.GetNoticeDocumentDao();

IList noticeDocs = noticeDocumentDao.GetAll();

noticeDocumentDao.Dispose();

/*

 * NoticeDocument的数据访问函数应该在GetAll函数中返回所有

 * 它本身的对象，建议将NoticeDocument class定义为sealed

 * 避免继承它

 */

Assert.AreEqual(1, noticeDocs.Count);

Assert.AreEqual("notice body of notice #1", ((NoticeDocument)noticeDocs[0]).Content);