如何配置hbm2java和hbm2dao将软件包名称添加到生成的类

Question

我正在尝试hbm2java使用maven 配置生成POJO类和DAO对象。我要处理的问题之一是没有生成程序包名称。我为此使用以下pom：

<execution>
    <id>hbm2java</id>
    <phase>generate-sources</phase>
    <goals>
        <goal>hbm2java</goal>
    </goals>
    <inherited>false</inherited>
    <configuration>
        <components>
            <component>
                <name>hbm2java</name>
                <implementation>configuration</implementation>
            </component>
        </components>
        <componentProperties>
            <packagename>package.name</packagename>
            <configurationfile>target/hibernate3/generated-mappings/hibernate.cfg.xml</configurationfile>
        </componentProperties>
    </configuration>
</execution>

但是，生成的代码从以下内容开始：

// default package
// Generated 2010-05-17 13:11:51 by Hibernate Tools 3.2.2.GA

/**
 * Messages generated by hbm2java
 */
public class Messages  implements java.io.Serializable {

有没有一种方法可以强制maven生成 packagename中 定义的 包 部分？ __

更新：

这是我的hibernate.cfg.xml，它也是由hibernate-tools（hbm2cfgxml）自动生成的：

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <property name="hibernate.c3p0.max_size">20</property>
        <property name="hibernate.c3p0.max_statements">50</property>
        <property name="hibernate.c3p0.min_size">5</property>
        <property name="hibernate.c3p0.timeout">1800</property>
        <property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
        <property name="hibernate.connection.password">password</property>
        <property name="hibernate.connection.url">jdbc:postgresql://localhost:5432/db</property>
        <property name="hibernate.connection.username">username</property>
        <property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</property>
        <mapping resource="package/name/Messages.hbm.xml" />
    </session-factory>
</hibernate-configuration>

Answer 1

为了以防万一，下面是hibernate3-maven-plugin的工作配置，用于自底向上方法：

  <plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>hibernate3-maven-plugin</artifactId>
    <version>2.2</version>
    <executions>
      <execution>
        <id>generate-xml-files</id>
        <phase>generate-resources</phase>
        <goals>
          <goal>hbm2hbmxml</goal>
          <goal>hbm2cfgxml</goal>
        </goals>
      </execution>
      <execution>
        <id>generate-entities</id>
        <phase>generate-sources</phase>
        <goals>
          <goal>hbm2java</goal>
        </goals>
      </execution>
    </executions>
    <configuration>
      <components>
        <component>
          <name>hbm2hbmxml</name>
          <implementation>jdbcconfiguration</implementation>
          <outputDirectory>target/classes</outputDirectory>
        </component>
        <component>
          <name>hbm2cfgxml</name>
          <implementation>jdbcconfiguration</implementation>
          <outputDirectory>target/classes</outputDirectory>
        </component>
        <component>
          <name>hbm2java</name>
          <implementation>configuration</implementation>
          <outputDirectory>target/generated-sources/hibernate3</outputDirectory>
        </component>
      </components>
      <componentProperties>
        <propertyfile>src/main/resources/database.properties</propertyfile>
        <jdk5>true</jdk5>
        <ejb3>false</ejb3>
        <packagename>com.mycompany.myapp</packagename>
        <format>true</format>
        <haltonerror>true</haltonerror>
      </componentProperties>
    </configuration>
    <dependencies>
      <dependency>
        <groupId>org.apache.derby</groupId>
        <artifactId>derby</artifactId>
        <version>10.5.3.0_1</version>
      </dependency>
    </dependencies>
  </plugin>

这是我src/main/database.properties文件的内容：

hibernate.connection.driver_class=org.apache.derby.jdbc.EmbeddedDriver
hibernate.connection.url=jdbc:derby:./derbyDBs/EMPLDB
hibernate.connection.username=APP
hibernate.connection.password=APP
hibernate.dialect=org.hibernate.dialect.DerbyDialect

#workaround for http://opensource.atlassian.com/projects/hibernate/browse/HBX-1145
hibernate.connection.autocommit=true

此设置：

1. 生成*.hbm.xml在target/classes（与包）过程中generate-resources。
2. 生成一个hibernate.cfg.xml在target/classes与映射文件中的条目。
3. 从中的映射生成实体target/generated-sources/hibernate3（我建议遵循target/generated-sources/<tool>生成资源的约定，以便IDE可以自动检测到它们）。

这是clean compile针对具有两个表的示例数据库的结果：

$ mvn clean编译
...
$树目标/
目标/
├──班级
│├──com
││└──我的公司
││└──myapp
││├──Department.class
││├──Department.hbm.xml
││├──员工等级
││└──Employee.hbm.xml
│├──database.properties
│└──hibernate.cfg.xml
└──生成源
    └──hibernate3
        └──com
            ──我的公司
                └──myapp
                    ├──Department.java
                    └──Employee.java