<?xml version="1.0" encoding="UTF-8"?>
[b]Child table[/b]
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="com.nest.shop.dbmodel">
  <class entity-name="NTColumn" node="NTColumn" table="NTColumn">
    <id column="Id" name="Id" node="Id" type="string">
      <generator class="guid"/>
    </id>
    <!--property column="TableId" name="TableId" node="TableId"/-->
    <property column="Name" name="Name" node="Name" type="string"/>
    <property column="Type" name="Type" node="Type" type="string"/>
    <property column="Description" name="Description" node="Description" type="string"/>
    <property column="DataType" name="DataType" node="DataType" type="string"/>
    <property column="DataSize" name="DataSize" node="DataSize" type="string"/>
    <property column="DataScale" name="DataScale" node="DataScale" type="string"/>
    <property column="Comment" name="Comment" node="Comment" type="string"/>
    <many-to-one column="TableId" entity-name="NTTable"
     name="myTable" embed-xml="true" node="NTTable"/>
  </class>
</hibernate-mapping>
[b]Parent Table[/b]
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="com.test.dbmodel">
  <class entity-name="NTTable" node="NTTable" table="NTTable">
    <id column="Id" name="Id" node="Id" type="string">
      <generator class="guid"/>
    </id>
    <property column="Name" name="Name" node="Name" type="string"/>
    <property column="Type" name="Type" node="Type" type="string"/>
    <property column="Description" name="Description" node="Description" type="string"/>
    <property column="Comment" name="Comment" node="Comment" type="string"/>
    <property column="History" name="History" node="History" type="string"/>
    <property column="Boundary" name="Boundary" node="Boundary" type="string"/>
    <property column="Log" name="Log" node="Log" type="string"/>
    <property column="Cache" name="Cache" node="Cache" type="string"/>
    <property column="Notify" name="Notify" node="Notify" type="string"/>
    <property column="Identifier" name="Identifier" node="Identifier" type="string"/>
    <set name="columnSet" embed-xml="true" node="Columns" lazy="false" inverse="false">
        <key column="tableId"/>
        <one-to-many entity-name="NTColumn" embed-xml="true"/>
    </set>
  </class>
</hibernate-mapping>

      List<Element> l =session.createQuery("from NTColumn" +
               " where Id=1").list();
   
       Document doc = DocumentHelper.createDocument();
       Element root = doc.addElement("Root");
       doc.setRootElement(root);
        for (Element nTTable : l) {
            nTTable.setParent(null);
            doc.getRootElement().add(nTTable);
        }

[b]doc.asXML()// Here causes the error StackOverflow[/b]