· Field: description
· Field Type: java.lang.String
· Database Column: 行业说明
· SQL Type: varchar
效果如下,最后点击完成。
注意:如上篇文章一样,将生成代码中的 sql-type="varchar" 改写成 sql-type="varchar(xy)" ,xy是一个合适的VARCHAR 的位数。
2. 完成 ejbCreate 和 ejbPostCreate 方法:
3. 在类标记中加入以下标记:
4. 增加一个Select method ,你可以使用JBoss-IDE得到,这里是代码(后面有完整的源代码):
//######################## Select method ##############################
/**
* Select method
* @ejb.select
* query = "SELECT user.email FROM GroupSchema AS g, IN (g.users) AS user WHERE g.name = ?1"
*
*/
public abstract java.util.Collection ejbSelectUserIDs(String groupName)
throws javax.ejb.FinderException;
/**
* Home method
* @throws FinderException
* @ejb.home-method view-type = "local"
*/
public java.util.ArrayList ejbHomeGetUserIDs(String groupName)
throws javax.ejb.FinderException {
return (java.util.ArrayList) ejbSelectUserIDs(groupName);
}
5. 将 GroupBean 加入到 cmpEJB 模块中,然后 lomboz ->Generate EJB Classes
6. 重点:建立 GroupBean 与 UserInfoBean 的一对多的双向联系:
● 右击 GroupBean ->J2EE ->Add CMR Relationship :
生成的代码参考下面给出的完整的源代码。
● 切换到 UserInfoBean.java:
右击 UserInfoBean ->J2EE ->Add CMR Relationship :
在 UserInfoBean.java 中生成的代码(需要手工添加@jboss.relation):
/**
* Getter for CMR Relationship
*
* @ejb.interface-method view-type="local"
* @ejb.relation name = "GroupsHaveUserInfos"
* role-name = "UserInfosInGroup"
* target-multiple = "yes"
* @jboss.relation
* fk-column = "组别"
* related-pk-field = "name"
*/
public abstract javamxj.ejb.cmp.GroupLocal getGroup();
/**
* Setter for CMR Relationship
*
* @ejb.interface-method view-type="local"
*/
public abstract void setGroup(javamxj.ejb.cmp.GroupLocal value);
Ok,再次 Generate EJB Classes ,如果一切正常,再进行下一步。
● 下面给出了GroupBean.java的完整的源代码:
/*
* 创建日期 2005-1-26
*
* 作者:javamxj(分享java快乐)
*/
package javamxj.ejb.cmp;
/**
*
* <!-- begin-user-doc --> You can insert your documentation for '<em><b>GroupBean</b></em>'. <!-- end-user-doc --> *
<!-- begin-lomboz-definition -->
<?xml version="1.0" encoding="UTF-8"?>
<lomboz:EJB xmlns:j2ee="http://java.sun.com/xml/ns/j2ee" xmlns:lomboz="http://lomboz.objectlearn.com/xml/lomboz">
<lomboz:entity>
<lomboz:entityEjb>
<j2ee:display-name>Group</j2ee:display-name>
<j2ee:ejb-name>Group</j2ee:ejb-name>
<j2ee:ejb-class>javamxj.ejb.cmp.GroupBean</j2ee:ejb-class>
<j2ee:persistence-type>Container</j2ee:persistence-type>
<j2ee:prim-key-class>java.lang.String</j2ee:prim-key-class>
<j2ee:cmp-version>2.x</j2ee:cmp-version>
<j2ee:abstract-schema-name>GroupSchema</j2ee:abstract-schema-name>
<j2ee:primkey-field>name</j2ee:primkey-field>
</lomboz:entityEjb>
<lomboz:fieldMappings>
<lomboz:fieldName>name</lomboz:fieldName>
<lomboz:fieldType>java.lang.String</lomboz:fieldType>
<lomboz:columnName>名称</lomboz:columnName>
<lomboz:jdbcType>VARCHAR</lomboz:jdbcType>
<lomboz:sqlType>varchar</lomboz:sqlType>
<lomboz:readOnly>false</lomboz:readOnly>
<lomboz:primaryKey>true</lomboz:primaryKey>
</lomboz:fieldMappings>
<lomboz:fieldMappings>
<lomboz:fieldName>description</lomboz:fieldName>
<lomboz:fieldType>java.lang.String</lomboz:fieldType>
<lomboz:columnName>行业说明</lomboz:columnName>
<lomboz:jdbcType>VARCHAR</lomboz:jdbcType>
<lomboz:sqlType>varchar</lomboz:sqlType>
<lomboz:readOnly>false</lomboz:readOnly>
<lomboz:primaryKey>false</lomboz:primaryKey>
</lomboz:fieldMappings>
<lomboz:tableName>GroupTable</lomboz:tableName>
<lomboz:dataSourceName></lomboz:dataSourceName>
</lomboz:entity>
</lomboz:EJB>
<!-- end-lomboz-definition -->
*
* <!-- begin-xdoclet-definition -->
* @ejb.bean name="Group"
* jndi-name="Group"
* type="CMP"
* primkey-field="name"
* schema="GroupSchema"
* cmp-version="2.x"
* view-type = "local"
* data-source=""
*
* @ejb.persistence
* table-name="GroupTable"
*
*
*
* @ejb.finder
* query="SELECT OBJECT(a) FROM GroupSchema as a"
* signature="java.util.Collection findAll()"
*
* @ejb.pk class="java.lang.String"
* <!-- end-xdoclet-definition -->
* @generated
**/
public abstract class GroupBean implements javax.ejb.EntityBean {
/**
* @ejb.create-method
*/
public java.lang.String ejbCreate(String name, String description)
throws javax.ejb.CreateException {
// EJB 2.0 spec says return null for CMP ejbCreate methods.
setName(name);
setDescription(description);
return null;
}
/**
* The container invokes this method immediately after it calls ejbCreate.
*/
public void ejbPostCreate(String name, String description)
throws javax.ejb.CreateException {
}
/**
* CMP Field name
* @return the name
* @ejb.persistent-field
* @ejb.persistence
* column-name="名称"
* jdbc-type="VARCHAR"
* sql-type="varchar(24)"
* read-only="false"
* @ejb.pk-field
*
* @ejb.interface-method
*/
public abstract java.lang.String getName();
/**
* @param java.lang.String the new name value
* @ejb.interface-method
*/
public abstract void setName(java.lang.String name);
/**
* CMP Field description
* @return the description
* @ejb.persistent-field
* @ejb.persistence
* column-name="行业说明"
* jdbc-type="VARCHAR"
* sql-type="varchar(24)"
* read-only="false"
*
*
* @ejb.interface-method
*/
public abstract java.lang.String getDescription();
/**
* @param java.lang.String the new description value
* @ejb.interface-method
*/
public abstract void setDescription(java.lang.String description);
//######################## Select method ##############################
/**
* Select method
* @ejb.select
* query = "SELECT user.email FROM GroupSchema AS g, IN (g.users) AS user WHERE g.name = ?1"
*
*/
public abstract java.util.Collection ejbSelectUserIDs(String groupName)
throws javax.ejb.FinderException;
/**
* Home method
* @throws FinderException
* @ejb.home-method view-type = "local"
*/
public java.util.ArrayList ejbHomeGetUserIDs(String groupName)
throws javax.ejb.FinderException {
return (java.util.ArrayList) ejbSelectUserIDs(groupName);
}
// ######################## CMR Relationship ##############################
/**
* Getter for CMR Relationship
*
* @ejb.interface-method view-type="local"
* @ejb.relation name = "GroupsHaveUserInfos"
* role-name = "GroupHasUserInfos"
* target-multiple = "no"
*/
public abstract java.util.Collection getUsers();
/**
* Setter for CMR Relationship
*
* @ejb.interface-method view-type="local"
*/
public abstract void setUsers(java.util.Collection value);
}