Constraint (core 4.2.0-SNAPSHOT API)

Type Parameters:

V - value type
```
public interface Constraint<V>
```
Perform a validation on data upon load.

Since:

4.0.0

Nested Class Summary

Nested Classes
Modifier and Type	Interface	Description
`static interface`	`Constraint.Factory<A extends java.lang.annotation.Annotation,V>`	Provider for a specific constraint given a field type.

Method Summary

All Methods Static Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`static Constraint.Factory<Matches,java.lang.String>`	`localizedPattern(java.util.ResourceBundle bundle)`	Require values to match the `pattern` provided.
`static Constraint.Factory<Matches,java.lang.String>`	`pattern()`	Require values to match the `pattern` provided.
`static <T extends java.lang.annotation.Annotation> Constraint.Factory<T,java.lang.Object>`	`required()`	Require a value to be present for fields marked with the annotation `T`.
`void`	`validate(@Nullable V value)`	Check if the provided deserialized value matches an expected condition.

- Method Detail
  - validate
```
void validate(@Nullable V value)
       throws SerializationException
```
    Check if the provided deserialized value matches an expected condition.
    
    Parameters:
    
    value - value to test
    
    Throws:
    
    SerializationException - if the value falls outside its constraint.
    
    Since:
    
    4.0.0
  - required
```
static <T extends java.lang.annotation.Annotation> Constraint.Factory<T,java.lang.Object> required()
```
    Require a value to be present for fields marked with the annotation T.
    
    Type Parameters:
    
    T - marker annotation type
    
    Returns:
    
    new constraint factory
    
    Since:
    
    4.0.0
  - pattern
```
static Constraint.Factory<Matches,java.lang.String> pattern()
```
    Require values to match the pattern provided.
    Upon failure, an error message will be taken from the annotation.
    
    Returns:
    
    factory providing matching pattern test
    
    Since:
    
    4.0.0
  - localizedPattern
```
static Constraint.Factory<Matches,java.lang.String> localizedPattern(java.util.ResourceBundle bundle)
```
    Require values to match the pattern provided.
    Upon failure, an error message will be taken from bundle with a key defined in the annotation.
    
    Parameters:
    
    bundle - source for localized messages
    
    Returns:
    
    factory providing matching pattern test
    
    Since:
    
    4.0.0