Using conditions to dynamically exclude POJO property in Jackson json serialization

Question

I have a requirement to dynamically exclude certain property within a List of a defined POJO. The main POJO to be serialized is:

public class Foo
{
    List&         


        

Answer 1

I just saw the culprit. Thanks a lot @Alexey for staying with me on this. After much try, I discover Jackson 2.4.2 might have required that I place my serialzer within the model it would work with. I wonder why though, but probably due to Java object serialization requirements, Jackson was failing to map the Filter at runtime. I hope Tatu would note this in Jackson documentation

public class PostProject
{
    /* The field template of this project */
    private List< FieldTemplateObject > field_templates;

    /**
     * @author Damilola Okuboyejo
     */
    @JsonFilter( "FieldTemplateIdFilter" )
    public static class FieldTemplateObject
    {
      private int     id;
      private boolean is_inherited;
      private String  item_type;

      /**
       * @return the id
       */
      public int getId()
      {
         return id;
      }

      /**
       * @param id
       *           the id to set
       */
      public void setId( int id )
      {
         this.id = id;
      }

      /**
       * @return the is_inherited
       */
      public boolean isIs_inherited()
      {
         return is_inherited;
      }

      /**
       * @param is_inherited
       *           the is_inherited to set
       */
      public void setIs_inherited( boolean is_inherited )
      {
         this.is_inherited = is_inherited;
      }

      /**
       * @return the item_type
       */
      public String getItem_type()
      {          
         return item_type;
      }

      /**
       * @param item_type
       *           the item_type to set
       */
      public void setItem_type( String item_type )
      {
         this.item_type = item_type;
      }
   }

   public static class ModelFieldSerializer extends SimpleBeanPropertyFilter
   {
      @Override
      protected boolean include( BeanPropertyWriter writer )
      {
         return true;
      }

      @Override
      protected boolean include( PropertyWriter writer )
      {
         return true;
      }

      @Override
      public void serializeAsField( Object pPojo, JsonGenerator pJgen,
            SerializerProvider pProvider, PropertyWriter pWriter )
            throws Exception
      {
         if( pPojo instanceof FieldTemplateObject )
         {
             boolean vAllowId = ((FieldTemplateObject) pPojo).isIs_inherited();
             if( !vAllowId && ("id".equals( pWriter.getName() )) )
             {
               return; // skip the id property
             }
             else
             {
               super.serializeAsField( pPojo, pJgen, pProvider, pWriter );
             }
         }
      }
    }
}