org.apache.webbeans.util
Class ClassUtil

java.lang.Object
  org.apache.webbeans.util.ClassUtil

public final class ClassUtil
extends java.lang.Object

Utility classes with respect to the class operations.

Since:

1.0

Author:

Gurkan Erdogdu

Field Summary

static java.util.Map<java.lang.Class<?>,java.lang.Class<?>>

PRIMITIVE_TO_WRAPPERS_MAP

Method Summary

static java.lang.Object	callInstanceMethod(java.lang.reflect.Method method, java.lang.Object instance, java.lang.Object[] args) Call method on the instance with given arguments.
static boolean	checkBeanAndRequiredTypeisParametrized(java.lang.reflect.Type beanTypeArg, java.lang.reflect.Type requiredTypeArg) Check parametrized bean type and parametrized required types.
static boolean	checkBeanTypeAndRequiredIsTypeVariable(java.lang.reflect.Type beanTypeArg, java.lang.reflect.Type requiredTypeArg)
static boolean	checkEventTypeAssignability(java.lang.reflect.Type eventType, java.lang.reflect.Type observerType) Checks that event is applicable for the given observer type.
static boolean	checkParametrizedType(java.lang.reflect.ParameterizedType pType) Return true if it does not contain type variable for wildcard type false otherwise.
static boolean	checkRequiredTypeIsClassAndBeanTypeIsVariable(java.lang.reflect.Type beanTypeArg, java.lang.reflect.Type requiredTypeArg) Checking bean type and required type.
static boolean	checkRequiredTypeIsTypeVariableAndBeanTypeIsClass(java.lang.reflect.Type beanTypeArg, java.lang.reflect.Type requiredTypeArg)
static boolean	checkRequiredTypeisWildCard(java.lang.reflect.Type beanTypeArg, java.lang.reflect.Type requiredTypeArg) Check bean type and required type.
static java.lang.reflect.Type[]	getActualTypeArguements(java.lang.reflect.Type type)
static java.lang.Class<?>	getClass(java.lang.reflect.Type type) Gets the class of the given type arguments.
static java.lang.Class<?>	getClassFromName(java.lang.String name)
static java.util.List<java.lang.reflect.Method>	getClassMethodsWithTypes(java.lang.Class<?> clazz, java.lang.String methodName, java.util.List<java.lang.Class<?>> parameterTypes)
static java.lang.reflect.Method	getClassMethodWithTypes(java.lang.Class<?> clazz, java.lang.String methodName, java.util.List<java.lang.Class<?>> parameterTypes)
static java.lang.Class<?>	getClazz(java.lang.reflect.Type type) Return raw class type for given type.
static java.lang.reflect.Method[]	getDeclaredMethods(java.lang.Class<?> clazz) Gets the declared methods of the given class.
static java.lang.reflect.Field[]	getFieldsWithType(WebBeansContext webBeansContext, java.lang.Class<?> clazz, java.lang.reflect.Type type)
static java.lang.Class<?>[]	getMethodParameterTypes(java.lang.reflect.Method method)
java.lang.Package	getPackage(java.lang.String packageName) Gets java package if exist.
static java.lang.Class<?>	getPrimitiveWrapper(java.lang.Class<?> clazz)
static java.lang.Class<?>	getRawTypeForInjectionPoint(javax.enterprise.inject.spi.InjectionPoint injectionPoint) Returns injection point raw type.
static java.lang.Class<?>	getReturnType(java.lang.reflect.Method method) Gets the return type of the method.
static java.util.List<java.lang.Class<?>>	getSuperClasses(java.lang.Class<?> clazz, java.util.List<java.lang.Class<?>> list)
static boolean	hasFinalMethod(java.lang.Class<?> clazz) Check for class that has a final method or not.
static boolean	isAbstract(java.lang.Integer modifier) Check abstract modifier.
static boolean	isArray(java.lang.Class<?> clazz)
static boolean	isAssignable(java.lang.reflect.Type beanType, java.lang.reflect.Type requiredType) See specification 5.2.3.
static boolean	isAssignableForParametrized(java.lang.reflect.ParameterizedType beanType, java.lang.reflect.ParameterizedType requiredType) Returns true if given bean's api type is injectable to injection point required type.
static boolean	isClassAssignable(java.lang.Class<?> lhs, java.lang.Class<?> rhs) Returns true if rhs is assignable type to the lhs, false otherwise.
static boolean	isConcrete(java.lang.Class<?> clazz) Returna true if the class is not abstract and interface.
static boolean	isDefinitionConstainsTypeVariables(java.lang.Class<?> clazz)
static boolean	isFinal(java.lang.Integer modifier) Check final modifier.
static boolean	isInnerClazz(java.lang.Class<?> clazz) Check the class is inner or not
static boolean	isInterface(java.lang.Integer modifier) Check interface modifier.
static boolean	isMethodHasCheckedException(java.lang.reflect.Method method) Check method throws checked exception or not.
static boolean	isMethodHasException(java.lang.reflect.Method method) Check method throws Exception or not.
static boolean	isMethodHasParameter(java.lang.reflect.Method method) Check that method has any formal arguments.
static boolean	isMoreThanOneMethodWithName(java.lang.String methodName, java.lang.Class<?> clazz)
static boolean	isObjectMethod(java.lang.String methodName)
static boolean	isOverriden(java.lang.reflect.Method subClassMethod, java.lang.reflect.Method superClassMethod)
static boolean	isParametrizedType(java.lang.reflect.Type type) Returns true if type is an instance of ParameterizedType else otherwise.
static boolean	isTypeVariable(java.lang.reflect.Type type) Returns true if type is an instance of TypeVariable else otherwise.
static boolean	isUnboundedTypeVariable(java.lang.reflect.Type type)
static boolean	isWildCardType(java.lang.reflect.Type type) Returns true if type is an instance of WildcardType else otherwise.
static java.lang.Object	newInstance(WebBeansContext webBeansContext, java.lang.Class<?> clazz)
static java.util.Set<java.lang.reflect.Type>	setInterfaceTypeHierarchy(java.util.Set<java.lang.reflect.Type> set, java.lang.Class<?> clazz)
static java.util.Set<java.lang.reflect.Type>	setTypeHierarchy(java.util.Set<java.lang.reflect.Type> set, java.lang.reflect.Type clazz)

Methods inherited from class java.lang.Object

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

Field Detail

PRIMITIVE_TO_WRAPPERS_MAP

public static final java.util.Map<java.lang.Class<?>,java.lang.Class<?>> PRIMITIVE_TO_WRAPPERS_MAP

Method Detail

newInstance

public static java.lang.Object newInstance(WebBeansContext webBeansContext,
                                           java.lang.Class<?> clazz)

getClassFromName

public static java.lang.Class<?> getClassFromName(java.lang.String name)

isFinal

public static boolean isFinal(java.lang.Integer modifier)

Check final modifier.

Parameters:

modifier - modifier

Returns:

true or false

isAbstract

public static boolean isAbstract(java.lang.Integer modifier)

Check abstract modifier.

Parameters:

modifier - modifier

Returns:

true or false

isInterface

public static boolean isInterface(java.lang.Integer modifier)

Check interface modifier.

Parameters:

modifier - modifier

Returns:

true or false

hasFinalMethod

public static boolean hasFinalMethod(java.lang.Class<?> clazz)

Check for class that has a final method or not.

Parameters:

clazz - check methods of it

Returns:

true or false

isInnerClazz

public static boolean isInnerClazz(java.lang.Class<?> clazz)

Check the class is inner or not

Parameters:

clazz - to check

Returns:

true or false

getPrimitiveWrapper

public static java.lang.Class<?> getPrimitiveWrapper(java.lang.Class<?> clazz)

getClass

public static java.lang.Class<?> getClass(java.lang.reflect.Type type)

Gets the class of the given type arguments.

If the given type Type parameters is an instance of the ParameterizedType, it returns the raw type otherwise it return the casted Class of the type argument.

Parameters:

type - class or parametrized type

Returns:

getDeclaredMethods

public static java.lang.reflect.Method[] getDeclaredMethods(java.lang.Class<?> clazz)

Gets the declared methods of the given class.

Parameters:

clazz - class instance

Returns:

the declared methods

isMethodHasParameter

public static boolean isMethodHasParameter(java.lang.reflect.Method method)

Check that method has any formal arguments.

Parameters:

method - method instance

Returns:

true or false

getReturnType

public static java.lang.Class<?> getReturnType(java.lang.reflect.Method method)

Gets the return type of the method.

Parameters:

method - method instance

Returns:

return type

isMethodHasCheckedException

public static boolean isMethodHasCheckedException(java.lang.reflect.Method method)

Check method throws checked exception or not.

Parameters:

method - method instance

Returns:

trur or false

isMethodHasException

public static boolean isMethodHasException(java.lang.reflect.Method method)

Check method throws Exception or not.

Parameters:

method - method instance

Returns:

trur or false

callInstanceMethod

public static java.lang.Object callInstanceMethod(java.lang.reflect.Method method,
                                                  java.lang.Object instance,
                                                  java.lang.Object[] args)

Call method on the instance with given arguments.

Parameters:

method - method instance

instance - object instance

args - arguments

Returns:

the method result

getSuperClasses

public static java.util.List<java.lang.Class<?>> getSuperClasses(java.lang.Class<?> clazz,
                                                                 java.util.List<java.lang.Class<?>> list)

getMethodParameterTypes

public static java.lang.Class<?>[] getMethodParameterTypes(java.lang.reflect.Method method)

isObjectMethod

public static boolean isObjectMethod(java.lang.String methodName)

isMoreThanOneMethodWithName

public static boolean isMoreThanOneMethodWithName(java.lang.String methodName,
                                                  java.lang.Class<?> clazz)

getPackage

public java.lang.Package getPackage(java.lang.String packageName)

Gets java package if exist.

Parameters:

packageName - package name

Returns:

the package with given name

isParametrizedType

public static boolean isParametrizedType(java.lang.reflect.Type type)

Returns true if type is an instance of ParameterizedType else otherwise.

Parameters:

type - type of the artifact

Returns:

true if type is an instance of ParameterizedType

isWildCardType

public static boolean isWildCardType(java.lang.reflect.Type type)

Returns true if type is an instance of WildcardType else otherwise.

Parameters:

type - type of the artifact

Returns:

true if type is an instance of WildcardType

isUnboundedTypeVariable

public static boolean isUnboundedTypeVariable(java.lang.reflect.Type type)

isTypeVariable

public static boolean isTypeVariable(java.lang.reflect.Type type)

Returns true if type is an instance of TypeVariable else otherwise.

Parameters:

type - type of the artifact

Returns:

true if type is an instance of TypeVariable

isConcrete

public static boolean isConcrete(java.lang.Class<?> clazz)

Returna true if the class is not abstract and interface.

Parameters:

clazz - class type

Returns:

true if the class is not abstract and interface

isAssignable

public static boolean isAssignable(java.lang.reflect.Type beanType,
                                   java.lang.reflect.Type requiredType)

See specification 5.2.3.

Parameters:

beanType - bean type

requiredType - required type

Returns:

true if assignable

checkEventTypeAssignability

public static boolean checkEventTypeAssignability(java.lang.reflect.Type eventType,
                                                  java.lang.reflect.Type observerType)

Checks that event is applicable for the given observer type.

Parameters:

eventType - event type

observerType - observer type

Returns:

true if event is applicable

isClassAssignable

public static boolean isClassAssignable(java.lang.Class<?> lhs,
                                        java.lang.Class<?> rhs)

Returns true if rhs is assignable type to the lhs, false otherwise.

Parameters:

lhs - left hand side class

rhs - right hand side class

Returns:

true if rhs is assignable to lhs

isAssignableForParametrized

public static boolean isAssignableForParametrized(java.lang.reflect.ParameterizedType beanType,
                                                  java.lang.reflect.ParameterizedType requiredType)

Returns true if given bean's api type is injectable to injection point required type.

Parameters:

beanType - bean parametrized api type

requiredType - injection point parametrized api type

Returns:

if injection is possible false otherwise

checkBeanAndRequiredTypeisParametrized

public static boolean checkBeanAndRequiredTypeisParametrized(java.lang.reflect.Type beanTypeArg,
                                                             java.lang.reflect.Type requiredTypeArg)

Check parametrized bean type and parametrized required types.

Parameters:

beanTypeArg - parametrized bean type

requiredTypeArg - parametrized required type

Returns:

true if types are assignables

checkRequiredTypeisWildCard

public static boolean checkRequiredTypeisWildCard(java.lang.reflect.Type beanTypeArg,
                                                  java.lang.reflect.Type requiredTypeArg)

Check bean type and required type.

Required type is a wildcard type.

Parameters:

beanTypeArg - bean type

requiredTypeArg - required type

Returns:

true if contdition satisfies

checkRequiredTypeIsClassAndBeanTypeIsVariable

public static boolean checkRequiredTypeIsClassAndBeanTypeIsVariable(java.lang.reflect.Type beanTypeArg,
                                                                    java.lang.reflect.Type requiredTypeArg)

Checking bean type and required type.

Required type is class and bean type is a type variable.

Parameters:

beanTypeArg - bean type

requiredTypeArg - required type

Returns:

true if condition satisfy

checkRequiredTypeIsTypeVariableAndBeanTypeIsClass

public static boolean checkRequiredTypeIsTypeVariableAndBeanTypeIsClass(java.lang.reflect.Type beanTypeArg,
                                                                        java.lang.reflect.Type requiredTypeArg)

checkBeanTypeAndRequiredIsTypeVariable

public static boolean checkBeanTypeAndRequiredIsTypeVariable(java.lang.reflect.Type beanTypeArg,
                                                             java.lang.reflect.Type requiredTypeArg)

getClassMethodsWithTypes

public static java.util.List<java.lang.reflect.Method> getClassMethodsWithTypes(java.lang.Class<?> clazz,
                                                                                java.lang.String methodName,
                                                                                java.util.List<java.lang.Class<?>> parameterTypes)

Parameters:

clazz - webbeans implementation class

methodName - name of the method that is searched

parameterTypes - parameter types of the method(it can be subtype of the actual type arguments of the method)

Returns:

the list of method that satisfies the condition

getClassMethodWithTypes

public static java.lang.reflect.Method getClassMethodWithTypes(java.lang.Class<?> clazz,
                                                               java.lang.String methodName,
                                                               java.util.List<java.lang.Class<?>> parameterTypes)

isArray

public static boolean isArray(java.lang.Class<?> clazz)

isDefinitionConstainsTypeVariables

public static boolean isDefinitionConstainsTypeVariables(java.lang.Class<?> clazz)

getActualTypeArguements

public static java.lang.reflect.Type[] getActualTypeArguements(java.lang.reflect.Type type)

setTypeHierarchy

public static java.util.Set<java.lang.reflect.Type> setTypeHierarchy(java.util.Set<java.lang.reflect.Type> set,
                                                                     java.lang.reflect.Type clazz)

getClazz

public static java.lang.Class<?> getClazz(java.lang.reflect.Type type)

Return raw class type for given type.

Parameters:

type - base type instance

Returns:

class type for given type

setInterfaceTypeHierarchy

public static java.util.Set<java.lang.reflect.Type> setInterfaceTypeHierarchy(java.util.Set<java.lang.reflect.Type> set,
                                                                              java.lang.Class<?> clazz)

checkParametrizedType

public static boolean checkParametrizedType(java.lang.reflect.ParameterizedType pType)

Return true if it does not contain type variable for wildcard type false otherwise.

Parameters:

pType - parameterized type

Returns:

true if it does not contain type variable for wildcard type

getFieldsWithType

public static java.lang.reflect.Field[] getFieldsWithType(WebBeansContext webBeansContext,
                                                          java.lang.Class<?> clazz,
                                                          java.lang.reflect.Type type)

getRawTypeForInjectionPoint

public static java.lang.Class<?> getRawTypeForInjectionPoint(javax.enterprise.inject.spi.InjectionPoint injectionPoint)

Returns injection point raw type.

Parameters:

injectionPoint - injection point definition

Returns:

injection point raw type

isOverriden

public static boolean isOverriden(java.lang.reflect.Method subClassMethod,
                                  java.lang.reflect.Method superClassMethod)