ValueObjectType (cayenne-doc: Cayenne Documentation 4.2 API)

Type Parameters:

V - type of user's custom object.

T - type that custom object will be serialized to/from should be backed by appropriate ExtendedType.

All Known Implementing Classes:

BigDecimalValueType, BigIntegerValueType, CharacterValueType, LocalDateTimeValueType, LocalDateValueType, LocalTimeValueType, PeriodValueType, UUIDValueType
```
public interface ValueObjectType<V,T>
```
Descriptor and serialization helper for custom value objects that can be safely stored in the DB. Lightweight alternative for the ExtendedType.

Since:

4.0

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default boolean`	`equals(V value1, V value2)`	Allows to use special logic to compare values for equality as in rare cases it is not suffice to use default equals() method.
`T`	`fromJavaObject(V object)`
`Class<T>`	`getTargetType()`
`Class<V>`	`getValueType()`
`String`	`toCacheKey(V object)`	Returned value should be same for objects that is logically equal.
`V`	`toJavaObject(T value)`

- Method Detail
  - getTargetType
```
Class<T> getTargetType()
```
    Returns:
    
    base type used to serialize V objects to.
  - getValueType
```
Class<V> getValueType()
```
    Returns:
    
    type of Objects described by this ValueObjectType.
  - toJavaObject
```
V toJavaObject(T value)
```
    Parameters:
    
    value - of type T
    
    Returns:
    
    java object
  - fromJavaObject
```
T fromJavaObject(V object)
```
    Parameters:
    
    object - java object
    
    Returns:
    
    value of type T
  - toCacheKey
```
String toCacheKey(V object)
```
    Returned value should be same for objects that is logically equal.
    
    Returns:
    
    String representation usable for cache.
  - equals
```
default boolean equals(V value1,
                       V value2)
```
    Allows to use special logic to compare values for equality as in rare cases it is not suffice to use default equals() method. Default implementation uses Objects.equals(Object, Object) method.
    
    Parameters:
    
    value1 - to compare
    
    value2 - to compare
    
    Returns:
    
    true if given values are equal