hibernate3-maven-plugin：不同maven项目中的条目，hbm2ddl失败
我正在尝试将一个实体放入不同的 Maven 项目中。在当前项目中，我有：
@Entity
public class User {
...
private FacebookUser facebookUser;
...
public FacebookUser getFacebookUser() {
return facebookUser;
}
...
public void setFacebookUser(FacebookUser facebookUser) {
this.facebookUser = facebookUser;
}
然后 FacebookUser （在不同的 Maven 项目中，这是当前项目的依赖项）定义为：
@Entity
public class FacebookUser {
...
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
public Long getId() {
return id;
}
这是我的 Maven hibernate3-maven-plugin 配置：
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>hibernate3-maven-plugin</artifactId>
<version>2.2</version>
<executions>
<execution>
<phase>process-classes</phase>
<goals>
<goal>hbm2ddl</goal>
</goals>
</execution>
</executions>
<configuration>
<components>
<component>
<name>hbm2ddl</name>
<implementation>jpaconfiguration</implementation>
</component>
</components>
<componentProperties>
<ejb3>false</ejb3>
<persistenceunit>Default</persistenceunit>
<outputfilename>schema.ddl</outputfilename>
<drop>false</drop>
<create>true</create>
<export>false</export>
<format>true</format>
</componentProperties>
</configuration>
</plugin>
这是我收到的错误：
org.hibernate.MappingException: Could not determine type for: com.xxx.facebook.model.FacebookUser, at table: user, for columns: [org.hibernate.mapping.Column(facebook_user)]
我知道FacebookUser 位于类路径上，因为如果我将 facebook 用户设置为瞬态，则项目可以正常编译：
@Transient
public FacebookUser getFacebookUser() {
return facebookUser;
}
I'm trying to put an entity in a different maven project. In the current project I have:
@Entity
public class User {
...
private FacebookUser facebookUser;
...
public FacebookUser getFacebookUser() {
return facebookUser;
}
...
public void setFacebookUser(FacebookUser facebookUser) {
this.facebookUser = facebookUser;
}
Then FacebookUser (in a different maven project, that's a dependency of a current project) is defined as:
@Entity
public class FacebookUser {
...
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
public Long getId() {
return id;
}
Here is my maven hibernate3-maven-plugin configuration:
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>hibernate3-maven-plugin</artifactId>
<version>2.2</version>
<executions>
<execution>
<phase>process-classes</phase>
<goals>
<goal>hbm2ddl</goal>
</goals>
</execution>
</executions>
<configuration>
<components>
<component>
<name>hbm2ddl</name>
<implementation>jpaconfiguration</implementation>
</component>
</components>
<componentProperties>
<ejb3>false</ejb3>
<persistenceunit>Default</persistenceunit>
<outputfilename>schema.ddl</outputfilename>
<drop>false</drop>
<create>true</create>
<export>false</export>
<format>true</format>
</componentProperties>
</configuration>
</plugin>
Here is the error I'm getting:
org.hibernate.MappingException: Could not determine type for: com.xxx.facebook.model.FacebookUser, at table: user, for columns: [org.hibernate.mapping.Column(facebook_user)]
I know that FacebookUser is on the classpath because if I make facebook user transient, project compiles fine:
@Transient
public FacebookUser getFacebookUser() {
return facebookUser;
}
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评论（2）
FacebookUser不是基本类型，不能持久保存在User表的列中，它是实际持久保存在另一个表中的真实实体。这里有User和FacebookUser之间的一对一关系，您需要这样声明：A
FacebookUseris not a basic type and can't be persisted in a column of theUsertable, it's a real entity that is actually persisted in another table. What you have here is a one-to-one relation betweenUserandFacebookUserand you need to declare it as such:您可能想尝试将依赖项添加为“测试”，而不仅仅是编译。
来自 http://mojo.codehaus.org/maven -hibernate3/hibernate3-maven-plugin/hbm2ddl-mojo.html：
You might want to try adding the dependencies as 'test' and not just compile.
From http://mojo.codehaus.org/maven-hibernate3/hibernate3-maven-plugin/hbm2ddl-mojo.html: