java - Operations on the DiscriminatorValue -


i want map 2 classes 1 table , use inheritance represent relationships.

e.g. class represents general task type id not equal 3 or 4. class b more specific task type id 3 or 4, code can seen this,

@entity @table(name = "task") @inheritance(strategy= inheritancetype.single_table) @discriminatorcolumn(name="task_type_id",discriminatortype= discriminatortype.integer) @discriminatorvalue(value="not 3 or 4") public class {     // properties }  @entity @table(name = "task") @inheritance(strategy= inheritancetype.single_table) @discriminatorcolumn(name="task_type_id",discriminatortype= discriminatortype.integer) @discriminatorvalue(value="3 or 4") public class b extends {     // properties }

how handle discriminatorvalue part operations "not", "or"?


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