Hi,
I am facing subclass integration issue. Plz guide me.
My hmb.xml mapping
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
<class name="com.webdunia.spring.domain.Entity" table="ENTITY">
<cache usage="read-only"/>
<id name="id" column="ID" type="java.lang.String" unsaved-value="null">
<generator class="identity"/>
</id>
<property name="name" column="NAME" type="java.lang.String" not-null="true"/>
<property name="title" column="TITLE" type="java.lang.String"/>
<property name="about" column="ABOUT" type="java.lang.String"/>
<property name="policyStatement" column="POLICYSTATEMENT" type="java.lang.String" not-null="true"/>
<property name="imageRelativePath" column="IMAGERELATIVEPATH" type="java.lang.String" not-null="true"/>
<property name="creationDate" column="CREATIONDATE" type="java.util.Date"/>
<property name="lastModificationDate" column="LASTMODIFICATIONDATE" type="java.util.Date"/>
<property name="timeZoneId" column="TIMEZONEID" type="java.lang.String"/>
<property name="entityState" column="ENTITYSTATE" type="java.lang.String"/>
<property name="role" column="ROLE" type="java.lang.String"/>
<property name="language" column="LANGCODE" type="java.lang.String"/>
<property name="theme" column="THEME" type="java.lang.String"/>
<property name="isAggregationEnabled" column="AGGREGATIONENABLED" type="java.lang.Integer"/>
<property name="isFamilyFilterEnabled" column="FAMILYFILTERENABLED" type="java.lang.Integer"/>
<property name="attributes" column="ATTRIBUTES" type="java.lang.String"/>
<property name="disclaimer" column="DISCLAIMER" type="java.lang.String"/>
<discriminator column="ENTITYOWNERTYPE" type="string">
</discriminator>
<set name="accreditation" table="ACCREDITATION" lazy="false">
<key column="ENTITYID"/>
<composite-element class="com.webdunia.spring.domain.Accreditation">
<property name="id" column="ID" not-null="true"/>
<property name="title" column="TITLE"/>
<property name="about" column="ABOUT"/>
<property name="url" column="URL"/>
<property name="creationDate" column="CREATIONDATE"/>
</composite-element>
</set>
<set name="address" table="ADDRESS" lazy="false">
<key column="ENTITYID"/>
<composite-element class="com.webdunia.spring.domain.Address">
<property name="id" column="ID" not-null="true"/>
<property name="title" column="TITLE"/>
<property name="about" column="ABOUT"/>
<property name="street" column="STREET"/>
<property name="milestone" column="MILESTONE"/>
<property name="city" column="CITY"/>
<property name="state" column="STATE"/>
<property name="country" column="COUNTRY"/>
<property name="pincode" column="PINCODE"/>
<property name="phoneNumbers" column="PHONENUMBERS"/>
<property name="creationDate" column="CREATIONDATE"/>
</composite-element>
</set>
<set name="medicalHistory" table="MEDICALHISTORY" lazy="false">
<key column="ENTITYID"/>
<composite-element class="com.webdunia.spring.domain.MedicalHistory">
<property name="id" column="ID" not-null="true"/>
<property name="title" column="TITLE"/>
<property name="about" column="ABOUT"/>
<property name="creationDate" column="CREATIONDATE"/>
</composite-element>
</set>

<set name="publication" table="PUBLICATION" lazy="false">
<key column="ENTITYID"/>
<composite-element class="com.webdunia.spring.domain.Publication">
<property name="id" column="ID" not-null="true"/>
<property name="title" column="TITLE"/>
<property name="about" column="ABOUT"/>
<property name="url" column="URL"/>
<property name="creationDate" column="CREATIONDATE"/>
</composite-element>
</set>
<set name="practicingMethodology" table="PRACTICINGMETHODOLOGY" lazy="false">
<key column="ENTITYID"/>
<composite-element class="com.webdunia.spring.domain.PracticingMethodology">
<property name="id" column="ID" not-null="true"/>
<property name="title" column="TITLE"/>
<property name="about" column="ABOUT"/>
<property name="creationDate" column="CREATIONDATE"/>
</composite-element>
</set>
<subclass name="com.webdunia.spring.domain.Doctor" discriminator-value="DOCTOR">
<property name="specializations" column="SPECIALIZATIONS"/>
</subclass>
</class>
</hibernate-mapping>

Error:
2008-09-12 16:19:54,329 ERROR [org.hibernate.util.XMLHelper] Error parsing XML: XML InputStream(88) The content of element type "class" must match "(meta*,subselect?,cache?,synchronize*,comment?,tuplizer*,(id|composite-id),discriminator?,natural-id?,(version|timestamp)?,(property|many-to-one|one-to-one|component|dynamic-component|properties|any|map|set|list|bag|idbag|array|primitive-array)*,((join*,subclass*)|joined-subclass*|union-subclass*),loader?,sql-insert?,sql-update?,sql-delete?,filter*,resultset*,(query|sql-query)*)".
2008-09-12 16:19:54,329 INFO [STDOUT] %%%% Error Creating HibernateSessionFactory %%%%
2008-09-12 16:19:54,329 INFO [STDOUT] org.hibernate.MappingException: Could not read mappings from resource: Entity.hbm.xml


Plz guide me

I got the solution. This is xml position problem.

Solution
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
<class name="com.webdunia.spring.domain.Entity" table="ENTITY">
<cache usage="read-only"/>
<id name="id" column="ID" type="java.lang.String" unsaved-value="null">
<generator class="identity"/>
</id>
<discriminator column="ENTITYOWNERTYPE" type="string"/>

discriminator tag should be after id tag.
Thanks