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Hibernate version: 3.2.2 GA

Mapping documents:
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="com.wealthsystems.sim.model.entity">
<class name="Pais" table="PAIS">
<id name="idPais" column="IDPAIS" type="long"></id>

<property name="sigla" not-null="true" length="10"/>
<property name="descricao" not-null="true" length="80"/>
<property name="nacionalidade" length="80" />
<property name="idnAtivo" not-null="true" type="byte" />
<property name="idnPaisPadrao" type="byte" />
<property name="codigo" length="20" />

</class>
</hibernate-mapping>


In this moment i need discover what property of my entity is primary key.

I Write a method getPrimaryKeyProperty, but i don´t know how to discover what property is my primary key in run time execution.
public String getPrimaryKeyProperty(){}

Any one, say me what class of the Hibernate Core answer my question.

What class of the Hibernate Core return the name of primary key of the entity?

I'm not sure of the context of the situation? Why can't you just call getId?

What is the context of this scenario. Maybe it can shed some more light on your problem?