read-Atleap-6-发表新闻-新闻实体类

v 新闻实体类

Ø 数据结构描述

ª 通过继承Page和Localizable，NewsItem完成新闻实体

ª 通过继承、映射和引用NewsItem并不真正的保存新闻信息

ª ContentFieldVale保存真正的新闻内容，包括标题、注释和内容体等

ª ContentField保存布局信息，和ContentFieldVale形成引用关系，完成显示布局和内

容的分离

Ø新闻实体类图

Ø新闻实体主要数据库表

ØLocalizable.hbm.xml

<hibernate-mapping

>

<class

name="com.blandware.atleap.model.core.Localizable"

table="localizable"

lazy="false"

dynamic-update="false"

dynamic-insert="false"

select-before-update="false"

optimistic-lock="version"

>

<cache usage="read-write" />

<id

name="id"

column="id"

type="java.lang.Long"

unsaved-value="null"

>

</id>

<version

name="version"

type="long"

column="version"

access="property"

unsaved-value="null"

/>

<property

name="className"

type="java.lang.String"

update="true"

insert="true"

access="property"

column="class_name"

/>

<!—子类->

<joined-subclass

name="com.blandware.atleap.model.core.Page"

table="page"

dynamic-update="false"

dynamic-insert="false"

lazy="false"

>

<key

column="localizable_id"

/>

<property

name="uri"

type="java.lang.String"

update="true"

insert="true"

access="property"

>

<column

name="uri"

not-null="false"

unique="true"

/>

</property>

<property

name="usageCounter"

type="java.lang.Integer"

update="true"

insert="true"

access="property"

column="usage_counter"

not-null="false"

/>

<property

name="active"

type="true_false"

update="true"

insert="true"

access="property"

column="active"

not-null="true"

/>

<bag

name="linkedContentFieldValues"

table="field_value_page"

lazy="true"

inverse="false"

cascade="none"

>

<key

column="page_id"

>

</key>

<many-to-many

class="com.blandware.atleap.model.core.ContentFieldValue"

column="field_value_id"

outer-join="auto"

/>

</bag>

<bag

name="linkedMenuItems"

table="menu_item_page"

lazy="true"

inverse="false"

cascade="none"

>

<key

column="page_id"

>

</key>

<many-to-many

class="com.blandware.atleap.model.core.MenuItem"

column="menu_item_id"

outer-join="auto"

/>

</bag>

<!—Localizable的子类Page的子类-->

<joined-subclass

name="com.blandware.atleap.model.news.NewsItem"

table="news_item"

dynamic-update="false"

dynamic-insert="false"

lazy="false"

>

<key

column="page_id"

/>

<property

name="publicationDate"

type="date"

update="true"

insert="true"

access="property"

column="publication_date"

not-null="false"

/>

</joined-subclass>

</joined-subclass>

</class>