In how many ways we can map bean properties ?

Primitive type values

<property name="greeting">

  <value>hello</value>

</property>

<property name="maxStudents">

  <value>30</value>

</property>

References / other beans

<property name="bean1">

  <bean class="com.genius.MyBeanImpl" />

</property>

<property name="bean1">

  <ref bean="myBean" />

</property>

Null value

<property name="foo">

  <null />

</property>

Collection :  List

<property name="pages">

  <list>

    <value>general</value>

    <value>instructor</value>

    <value>course</value>

    <value>facilities</value>

  </list>

</property>

Collection : Map

Map with string values

<property name="methodMap">

  <map>

    <entry key="attribute">

       <value>PROPAGATION_SUPPORTS</value>

    </entry>

  </map>

</property>

Map with bean references

<property name="customEditors">

  <map>

    <entry key="com.genius.Phone">

       <bean id="phoneEditor" class="com.genius.PhoneEditor"></bean>

    </entry>

  </map>

</property>

Collection : Properties

<property name="hibernateProperties">

  <props>

     <prop key="hibernate.dialect"> 

        net.sf.hibernate.dialect.MySQLDialect 

     </prop>

     <prop key="hibernate.show_sql">true</prop>

  </props>

</property>

Values from placeholders

<property name="password">

  <value>${database.password}</value>

</property>