java - Parameterization entity with JPA -

I am trying to create a unit to parameter the values ​​of business rules, I have name, type and value

Value:

Value:

Type: value (double)

Value: 20

Usage will be done in a rule to add 20% of the value of the imported product. But I have many situations in the form of string, boolean or multi-valuable I thought of something like this:

  @NotEmpty private string name; // Enum @Enumerated (EnumType.STRING) @Enumeration (enumClass = ParameterType.class) with possible type (text, value, boolean, etc.) Private parameter type type; @OneToMany (mapped = "value") private list & lt; Parameter Value & gt; Values;  

ParameterValue unit, how can I implement it, because the value can be of different types (double, string, boolean, etc.)?

This does not work:

  public class parameter value {Private object value; }  

Reason: org.hibernate.MappingException: Number of columns in property mapping is incorrect: br.entity.admin.ParameterValue.value Type: Object "}}

< / Div>

This depends on your columns in the database. For example, if you type in enum MySQL uses . It can be:

  @Enumerated (EnumType.STRING) Private parameter type type;  

Where parameter value

  public enum parameter value {tex} T, value, Boolean}