no.g9.support.convert

Interface Converter<M,T>

Type Parameters:

M - the model type

T - the target type

All Known Subinterfaces:

AttributeConverter<M,T>

public interface Converter<M,T>

Common interface for converters between a model element and a target element.

Note that it is not required to preserve data through the conversion. Meaning, a value object that goes through a round trip of conversion will not necessary result in the original value.

It is generally recommended that converters convert null to null.

Classes implementing this interface are strongly encouraged to also override equals and hashCode as converters are likely to be used in various collections by the g9 framework.

Method Summary

Modifier and Type	Method and Description
T	fromModel(M value, ConvertContext context) Convert a value object from domain to target.
M	toModel(T value, ConvertContext context) Convert a value object from some representation to domain value type.

Method Detail

fromModel

T fromModel(M value,
            ConvertContext context)
     throws ConvertException

Convert a value object from domain to target.

Parameters:

value - The value object to convert

context - The conversion context

Returns:

the converted value

Throws:

ConvertException - If conversion can not be performed

toModel

M toModel(T value,
          ConvertContext context)
   throws ConvertException

Convert a value object from some representation to domain value type.

Parameters:

value - The value to convert

context - The conversion context

Returns:

the converted value

Throws:

ConvertException - If conversion can not be performed