org.unitils.objectvalidation.objectcreator.generator

Class GenericsGenerator

java.lang.Object

org.unitils.objectvalidation.objectcreator.generator.GenericsGenerator

All Implemented Interfaces:

Generator

public class GenericsGenerator
extends Object
implements Generator

Creates objects for all kind of objects that use generics.

Since:

1.1.6

Author:

Willemijn Wouters

Constructor Summary

Constructors

Constructor and Description
GenericsGenerator()

Method Summary

Methods

Modifier and Type	Method and Description
Set<Class<?>>	compareSubtypesSets(Set<?> set1, Set<?> set2) Returns only the in common classes of set1 and set2
protected Object	createRandomObjects(Set<Class<?>> classes) This method creates a random object of a random class found with getClassesOfSubtypes(WildcardTypeImpl, Set) or getClassesOfSuperType(WildcardTypeImpl, Set).
Object	generateObject(Class<?> clazz, List<Object> input, List<Class<?>> inputClasses, List<TreeNode> genericSubTypes)
Object	generateSubTypesObject(Class<?> classForType) Generate the exact object or a subtype from a specific class.
Set<Class<?>>	getClassesFromAParameterizedType(ParameterizedType type) Get all the sub/super classes from a the ParameterizedType.
Set<Class<?>>	getClassesFromTypeArguments(Type type) Get the classes from a specific type.
protected Set<?>	getClassesOfSubtypes(Class<?> clzz, Set<?> allClasses) Get the subtypes of a Class
protected Set<?>	getClassesOfSubtypes(sun.reflect.generics.reflectiveObjects.WildcardTypeImpl wildcard, Set<?> allClasses) Get the subtypes of a class (based on a wildcard).
protected Set<Class<?>>	getClassesOfSuperType(Class<?> clzz, Set<Class<?>> allClasses) Get all the supertypes from a Class
protected Set<Class<?>>	getClassesOfSuperType(sun.reflect.generics.reflectiveObjects.WildcardTypeImpl wildcard, Set<Class<?>> allClasses) An WildcardTypeImpl can have multiple lowerbounds (super).
protected Set<Class<? extends Object>>	getSetWithClassesThatOverridesASpecificMethod(Set<Class<? extends Object>> set, String methodName, Class<?>... parameterTypes) Goes through all the objects in a set and removes all the classes that doesn't override a specific method.
protected Object	pickAndCreateAnObjectFromASet(Set<Class<?>> collClasses) This method creates a random object from a Set of classes.

Methods inherited from class java.lang.Object

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

Constructor Detail

GenericsGenerator

public GenericsGenerator()

Method Detail

generateObject

public Object generateObject(Class<?> clazz,
                    List<Object> input,
                    List<Class<?>> inputClasses,
                    List<TreeNode> genericSubTypes)

Specified by:

generateObject in interface Generator

Parameters:

clazz - The class of the object to generate

input - the parameters to give to the constructor

inputClasses - the types of the constructor parameters

genericSubTypes - if clazz has generic parameters here they should be entered

Returns:

Object a randomly generated object or null if it was impossible to generate

See Also:

Generator.generateObject(java.lang.Class, java.util.List, java.util.List, java.util.List)

getClassesFromAParameterizedType

public Set<Class<?>> getClassesFromAParameterizedType(ParameterizedType type)

Get all the sub/super classes from a the ParameterizedType.

Parameters:

type: - This is the ParameterizedType from a generic.

Returns:

Set

getClassesFromTypeArguments

public Set<Class<?>> getClassesFromTypeArguments(Type type)

Get the classes from a specific type. The type can be just a class or can be WildcardTypeImpl.

Parameters:

type: - Get all the super/subtypes from a specific Type.

Returns:

Set

pickAndCreateAnObjectFromASet

protected Object pickAndCreateAnObjectFromASet(Set<Class<?>> collClasses)

This method creates a random object from a Set of classes.

Parameters:

collClasses: - This is a collection of classes.

Returns:

Object

generateSubTypesObject

public Object generateSubTypesObject(Class<?> classForType)

Generate the exact object or a subtype from a specific class.

Parameters:

classForType: - the generator should look for a subtype of this class.

Returns:

Object

getSetWithClassesThatOverridesASpecificMethod

protected Set<Class<? extends Object>> getSetWithClassesThatOverridesASpecificMethod(Set<Class<? extends Object>> set,
                                                                         String methodName,
                                                                         Class<?>... parameterTypes)

Goes through all the objects in a set and removes all the classes that doesn't override a specific method.

Parameters:

set: - A set of classes.

methodName: - the method that this method should find

parameterTypes: - the parameters of the method that the classes must override

Returns:

Set

getClassesOfSubtypes

protected Set<?> getClassesOfSubtypes(sun.reflect.generics.reflectiveObjects.WildcardTypeImpl wildcard,
                          Set<?> allClasses)

Get the subtypes of a class (based on a wildcard).

Parameters:

wildcard: - the wildcard of the generic

allClasses: - A collection where the Generator should add the found classes.

Returns:

Set

getClassesOfSubtypes

protected Set<?> getClassesOfSubtypes(Class<?> clzz,
                          Set<?> allClasses)

Get the subtypes of a Class

Parameters:

clzz: - look for subtypes of this Class.

allClasses: - A collection where the Generator should add the found classes.

Returns:

Set

getClassesOfSuperType

protected Set<Class<?>> getClassesOfSuperType(sun.reflect.generics.reflectiveObjects.WildcardTypeImpl wildcard,
                                  Set<Class<?>> allClasses)

An WildcardTypeImpl can have multiple lowerbounds (super).

Parameters:

wildcard: - the wildcard of the generic

allClasses: - A collection where the Generator should add the found classes.

Returns:

Set

getClassesOfSuperType

protected Set<Class<?>> getClassesOfSuperType(Class<?> clzz,
                                  Set<Class<?>> allClasses)

Get all the supertypes from a Class

Parameters:

clzz: - look for supertypes of this Class.

allClasses: - A collection where the Generator should add the found classes.

Returns:

Set

createRandomObjects

protected Object createRandomObjects(Set<Class<?>> classes)

This method creates a random object of a random class found with getClassesOfSubtypes(WildcardTypeImpl, Set) or getClassesOfSuperType(WildcardTypeImpl, Set).

Parameters:

classes: - A set with a collection of classes.

Returns:

Object

compareSubtypesSets

public Set<Class<?>> compareSubtypesSets(Set<?> set1,
                                Set<?> set2)

Returns only the in common classes of set1 and set2

Parameters:

set1: - an object of type Set

set2: - an object of type Set

Returns:

Set