org.apache.juneau.transform

Class BuilderSwap<T,B>

java.lang.Object

org.apache.juneau.transform.BuilderSwap<T,B>

Type Parameters:

T - The bean class.

B - The builder class.

public class BuilderSwap<T,B>
extends Object

Specialized transform for builder classes.

• Overview > juneau-marshall > Transforms > POJO Builders

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	BuilderSwap(Class<T> pojoClass, Class<B> builderClass, Constructor<T> pojoConstructor, Constructor<B> builderConstructor, MethodInfo createBuilderMethod, MethodInfo createPojoMethod) Constructor.

Method Summary

Modifier and Type	Method and Description
T	build(BeanSession session, B builder, ClassMeta<?> hint) Creates a new POJO from the specified builder.
B	create(BeanSession session, ClassMeta<?> hint) Creates a new builder object.
static BuilderSwap<?,?>	findSwapFromBuilderClass(Class<?> builderClass, Visibility cVis, Visibility mVis) Creates a BuilderSwap from the specified builder class if it qualifies as one.
static BuilderSwap<?,?>	findSwapFromPojoClass(Class<?> pojoClass, Visibility cVis, Visibility mVis) Creates a BuilderSwap from the specified POJO class if it has one.
Class<B>	getBuilderClass() The builder class.
ClassMeta<?>	getBuilderClassMeta(BeanSession session) Returns the ClassMeta of the transformed class type.
Class<T>	getPojoClass() The POJO class.

Methods inherited from class java.lang.Object

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

Constructor Detail

BuilderSwap

protected BuilderSwap(Class<T> pojoClass,
                      Class<B> builderClass,
                      Constructor<T> pojoConstructor,
                      Constructor<B> builderConstructor,
                      MethodInfo createBuilderMethod,
                      MethodInfo createPojoMethod)

Constructor.

Parameters:

pojoClass - The POJO class created by the builder class.

builderClass - The builder class.

pojoConstructor - The POJO constructor that takes in a builder as a parameter.

builderConstructor - The builder no-arg constructor.

createBuilderMethod - The static create() method on the POJO class.

createPojoMethod - The build() method on the builder class.

Method Detail

getPojoClass

public Class<T> getPojoClass()

The POJO class.

Returns:

The POJO class.

getBuilderClass

public Class<B> getBuilderClass()

The builder class.

Returns:

The builder class.

getBuilderClassMeta

public ClassMeta<?> getBuilderClassMeta(BeanSession session)

Returns the ClassMeta of the transformed class type.

This value is cached for quick lookup.

Parameters:

session - The bean context to use to get the class meta. This is always going to be the same bean context that created this swap.

Returns:

The ClassMeta of the transformed class type.

create

public B create(BeanSession session,
                ClassMeta<?> hint)
         throws ExecutableException

Creates a new builder object.

Parameters:

session - The current bean session.

hint - A hint about the class type.

Returns:

A new POJO.

Throws:

ExecutableException - Exception occurred on invoked constructor/method/field.

build

public T build(BeanSession session,
               B builder,
               ClassMeta<?> hint)
        throws ExecutableException

Creates a new POJO from the specified builder.

Parameters:

session - The current bean session.

builder - The POJO builder.

hint - A hint about the class type.

Returns:

A new POJO.

Throws:

ExecutableException - Exception occurred on invoked constructor/method/field.

findSwapFromBuilderClass

public static BuilderSwap<?,?> findSwapFromBuilderClass(Class<?> builderClass,
                                                        Visibility cVis,
                                                        Visibility mVis)

Creates a BuilderSwap from the specified builder class if it qualifies as one.

Parameters:

builderClass - The potential builder class.

cVis - Minimum constructor visibility.

mVis - Minimum method visibility.

Returns:

A new swap instance, or null if class wasn't a builder class.

findSwapFromPojoClass

public static BuilderSwap<?,?> findSwapFromPojoClass(Class<?> pojoClass,
                                                     Visibility cVis,
                                                     Visibility mVis)

Creates a BuilderSwap from the specified POJO class if it has one.

Parameters:

pojoClass - The POJO class to check.

cVis - Minimum constructor visibility.

mVis - Minimum method visibility.

Returns:

A new swap instance, or null if class didn't have a builder class.