两个类之间无法建立“一对一”关系

Question

What shall I do in the following xml to make a one-to-one relationship between Country class and PM class ?

  <class name="pojo.Country" table="country">
      <id name="c_id">
          <generator class="increment" />
      </id>
      <property name="name_c" />
      <one-to-one class="pojo.PM" name="name_pm" />
  </class>

  <class name="pojo.PM" table="pm">
      <id name="c_id">
          <generator class="increment" />
      </id>
      <property name="name_pm"  />
  </class>

I am making a one-to-one relation between name_pm which is a property defined inside the PM class and name_c which is a property defined inside Country class. The problem occurs when I write :

<one-to-one class="pojo.PM" name="name_pm" />

It starts to search the property name_pm inside the class PM when it should search inside the Country class.

How do I define a One-toOne relation between name_pm and name_c ?

Answer 1

Seems like wrong syntax.

Try

<one-to-one name="pmNameInCountryPojo" class="pojo.PM"
            cascade="save-update"></one-to-one>

Answer 2

The exception itself points to the solution.

You need to create getter and setter for name_pm in your pojo.Country class.

and add

<one-to-one class="pojo.Country" name="${variable-name}" />

in your pojo.PM configuration and create setter and getter for respective variable in PM class.

Look this example, it will help you.