Grouping several DTD and XSD XML schema references to compose a filter.  
    
  
    
      In the following steps you will be creating and/or configuring Spring beans in a Spring context file. A
      basic knowledge of Spring and the Spring Framework is required.
     
    
    - 
        Open or create a new Spring context file.
      
- 
        
          Create a new
          XML schema filter
          bean.
        
        
          
            <bean id="dita.schemas.map" parent="xml.schema.filter.collection.abstract">
  <property name="label" value="DITA Map" />
</bean> 
 
 
- 
        
          Add the relevant existing
          DTD
          or
          XSD
          XML schema references
          to the
          XML schema filter
          collection.
        
      
- 
        
          You may also add an
          XML schema filter
          into another
          XML schema filter
          to compose a hierarchies of
          XML schema references
          .
        
        
          
            <bean parent="xml.schema.filter.collection.entry">
  <property name="schema" ref="dita.schemas.bookMap" />
  <property name="registry" ref="dita.schemas.map" />
</bean> 
 
 
      You will be able to apply the created
      XML scheme filter
      on any processing facility such as metadata or link management. This facility will then apply only to the
      XML schema references
      that are part of this
      XML schema filter
      .