com.fortyoneconcepts.valjogen.model.util

Class AnnotationProxyBuilder<A extends Annotation>

java.lang.Object

com.fortyoneconcepts.valjogen.model.util.AnnotationProxyBuilder<A>

Type Parameters:

A - The type of the annotation that this builder should construct

All Implemented Interfaces:

InvocationHandler

public final class AnnotationProxyBuilder<A extends Annotation>
extends Object
implements InvocationHandler

A fluent builder that creates a new instance of our annotation with defaults (works also with source-only annotations at runtime). Use add(attribute-method-name, value) to configure values on the attribute followed by the build method to generate an annotation instance.

Field Summary

Fields

Modifier and Type	Field and Description
private Class<A>	annotation
private Map<String,Object>	valuesByMethodName

Constructor Summary

Constructors

Modifier	Constructor and Description
	AnnotationProxyBuilder(Class<A> annotation) Constructs a builder for the specified annotation.
private	AnnotationProxyBuilder(Class<A> annotation, Map<String,Object> valuesByMethodName)

Method Summary

Modifier and Type	Method and Description
AnnotationProxyBuilder<A>	add(String methodName, Object value) Configures the value that a given method on the annotation should return.
A	build() The annotation instance (a proxy).
Object	invoke(Object proxy, Method method, Object[] args)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

valuesByMethodName

private final Map<String,Object> valuesByMethodName

annotation

private final Class<A extends Annotation> annotation

Constructor Detail

AnnotationProxyBuilder

public AnnotationProxyBuilder(Class<A> annotation)

Constructs a builder for the specified annotation.

Parameters:

annotation - The type of the annotation that this builder should construct.

AnnotationProxyBuilder

private AnnotationProxyBuilder(Class<A> annotation,
                               Map<String,Object> valuesByMethodName)

Method Detail

build

public A build()

The annotation instance (a proxy).

Returns:

Annotation with filled-in configuration.

add

public AnnotationProxyBuilder<A> add(String methodName,
                                     Object value)

Configures the value that a given method on the annotation should return.

Parameters:

methodName - Name of the annotation method

value - The value that the annotation method should return

Returns:

A new builder instance.

Throws:

IllegalArgumentException - if methodName is not declared on the attribute

invoke

public Object invoke(Object proxy,
                     Method method,
                     Object[] args)
              throws Throwable

Specified by:

invoke in interface InvocationHandler

Throws:

Throwable