com.exalead.config.bean

Class Reflection

java.lang.Object

com.exalead.config.bean.Reflection

public class Reflection
extends java.lang.Object

Reflection helpers class.

Constructor Summary

Constructors

Constructor and Description
Reflection()

Method Summary

Modifier and Type	Method and Description
static java.util.List<java.lang.Class<?>>	getAllInterfaces(java.lang.Class<?> cls) Get all implemented interfaces and classes.
static java.lang.Class<?>	getBoxed(java.lang.Class<?> cls) Return the boxed class 'cls' if the 'clas' class is a primary type.
static <T> java.lang.reflect.Constructor<T>	getConstructor(java.lang.Class<T> cls, java.util.List<java.lang.Class<?>> argsCls) Get a constructor.
static java.lang.Throwable	getThrowableCause(java.lang.Throwable e) Get the original cause of an exception.
static ConfigurationException	getThrowableConfigurationException(java.lang.Throwable e) Get the original ConfigurationException of an exception.
static java.lang.String	getThrowableMessage(java.lang.Throwable e) Get the original message of an exception.
static boolean	hasSetters(java.lang.Class<?> cls) Return true if the class 'cls' has setters (void setXXX())
static boolean	hasValueOf(java.lang.Class<?> cls) Return true if the class 'cls' has either: "public (String)" method "public static valueOf(String)" method
static boolean	hasValueOf(java.lang.Class<?> cls, java.lang.Class<?> paramClass) Return true if the class 'cls' has either: "public static valueOf()" method "public ()" method
static java.lang.Object	invoke(java.lang.Class<?> cls, java.lang.String methodName, java.lang.Object obj, java.lang.Object... args) Invoke a method, with verbose exception handling.
static java.lang.Object	invoke(java.lang.reflect.Method method, java.lang.Object obj, java.lang.Object... args) Invoke a method, with verbose exception handling.
static boolean	isGenericTypeClass(java.lang.Class<?> cls) Returns true if the class 'cls' is a generic type ; that is, either the Object class, or an interface.
static boolean	isSetter(java.lang.reflect.Method method) Return true if the method 'method' is a setter (void setXXX())
static boolean	isVisibleSetter(java.lang.reflect.Method method) Return true if the method 'method' is a setter (void setXXX())
static <T> T	newInstance(java.lang.reflect.Constructor<T> cons, java.util.List<java.lang.Object> args) Constructor.newInstance()
static <T> java.lang.Object	toValueOf(java.lang.Class<T> cls, java.lang.Class<?> paramClass, java.lang.Object value) Transform the value "value" of type "paramClass" into an object of class "cls", using the static valueOf() method, or the standard constructor.
static <T> java.lang.Object	toValueOf(java.lang.Class<T> cls, java.lang.String value) Transform the string value "value" into an object of class "cls", using the standard constructor, or the static valueOf() method.
static <T> java.lang.Object	toValuesOf(java.lang.Class<T> cls, java.lang.Class<?> paramClass, java.lang.Object[] values) Transform an array of values "values" of type "paramClass" into an array of objects of class "cls", using the static valueOf() method, or the standard constructor.
static <T> java.lang.Object	toValuesOf(java.lang.Class<T> cls, java.lang.String[] values) Transform an array of strings "values" into an array of objects of class "cls", using the standard constructor, or the static valueOf() method.

Methods inherited from class java.lang.Object

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

Constructor Detail

Reflection

public Reflection()

Method Detail

getConstructor

public static <T> java.lang.reflect.Constructor<T> getConstructor(java.lang.Class<T> cls,
                                                                  java.util.List<java.lang.Class<?>> argsCls)
                                                           throws java.lang.NoSuchMethodException

Get a constructor.

Parameters:

cls - the class name

argsCls - argument types

Returns:

the exact constructor, or the matching constructor, so that all its argument types are assignable from the given types.

Throws:

java.lang.NoSuchMethodException

newInstance

public static <T> T newInstance(java.lang.reflect.Constructor<T> cons,
                                java.util.List<java.lang.Object> args)
                         throws java.lang.InstantiationException,
                                java.lang.IllegalAccessException,
                                java.lang.IllegalArgumentException,
                                java.lang.reflect.InvocationTargetException

Constructor.newInstance()

Throws:

java.lang.InstantiationException

java.lang.IllegalAccessException

java.lang.IllegalArgumentException

java.lang.reflect.InvocationTargetException

invoke

public static java.lang.Object invoke(java.lang.reflect.Method method,
                                      java.lang.Object obj,
                                      java.lang.Object... args)
                               throws java.lang.Exception

Invoke a method, with verbose exception handling.

Throws:

java.lang.Exception

invoke

public static java.lang.Object invoke(java.lang.Class<?> cls,
                                      java.lang.String methodName,
                                      java.lang.Object obj,
                                      java.lang.Object... args)
                               throws java.lang.Exception

Invoke a method, with verbose exception handling.

Throws:

java.lang.Exception

getBoxed

public static java.lang.Class<?> getBoxed(java.lang.Class<?> cls)

Return the boxed class 'cls' if the 'clas' class is a primary type.

isSetter

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

Return true if the method 'method' is a setter (void setXXX())

Parameters:

method - the method to inspect

isGenericTypeClass

public static boolean isGenericTypeClass(java.lang.Class<?> cls)

Returns true if the class 'cls' is a generic type ; that is, either the Object class, or an interface.

Parameters:

cls -

Returns:

isVisibleSetter

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

Return true if the method 'method' is a setter (void setXXX())

Parameters:

method - the method to inspect

hasSetters

public static boolean hasSetters(java.lang.Class<?> cls)

Return true if the class 'cls' has setters (void setXXX())

Parameters:

cls - the class to inspect

hasValueOf

public static boolean hasValueOf(java.lang.Class<?> cls,
                                 java.lang.Class<?> paramClass)

Return true if the class 'cls' has either:

• "public static valueOf()" method
• "public ()" method

Parameters:

cls - the class to inspect

paramClass - the parameter type

hasValueOf

public static boolean hasValueOf(java.lang.Class<?> cls)

Return true if the class 'cls' has either:

• "public (String)" method
• "public static valueOf(String)" method

Parameters:

cls - the class to inspect

toValueOf

public static <T> java.lang.Object toValueOf(java.lang.Class<T> cls,
                                             java.lang.Class<?> paramClass,
                                             java.lang.Object value)
                                      throws java.lang.NoSuchMethodException,
                                             java.lang.IllegalAccessException,
                                             java.lang.reflect.InvocationTargetException,
                                             java.lang.Exception

Transform the value "value" of type "paramClass" into an object of class "cls", using the static valueOf() method, or the standard constructor.

Throws:

java.lang.NoSuchMethodException

java.lang.IllegalAccessException

java.lang.reflect.InvocationTargetException

java.lang.Exception

toValueOf

public static <T> java.lang.Object toValueOf(java.lang.Class<T> cls,
                                             java.lang.String value)
                                      throws java.lang.NoSuchMethodException,
                                             java.lang.IllegalAccessException,
                                             java.lang.reflect.InvocationTargetException,
                                             java.lang.Exception

Transform the string value "value" into an object of class "cls", using the standard constructor, or the static valueOf() method.

Throws:

java.lang.NoSuchMethodException

java.lang.IllegalAccessException

java.lang.reflect.InvocationTargetException

java.lang.Exception

toValuesOf

public static <T> java.lang.Object toValuesOf(java.lang.Class<T> cls,
                                              java.lang.Class<?> paramClass,
                                              java.lang.Object[] values)
                                       throws java.lang.NoSuchMethodException,
                                              java.lang.IllegalAccessException,
                                              java.lang.reflect.InvocationTargetException,
                                              java.lang.Exception

Transform an array of values "values" of type "paramClass" into an array of objects of class "cls", using the static valueOf() method, or the standard constructor.

Throws:

java.lang.NoSuchMethodException

java.lang.IllegalAccessException

java.lang.reflect.InvocationTargetException

java.lang.Exception

toValuesOf

public static <T> java.lang.Object toValuesOf(java.lang.Class<T> cls,
                                              java.lang.String[] values)
                                       throws java.lang.NoSuchMethodException,
                                              java.lang.IllegalAccessException,
                                              java.lang.reflect.InvocationTargetException,
                                              java.lang.Exception

Transform an array of strings "values" into an array of objects of class "cls", using the standard constructor, or the static valueOf() method.

Throws:

java.lang.NoSuchMethodException

java.lang.IllegalAccessException

java.lang.reflect.InvocationTargetException

java.lang.Exception

getThrowableCause

public static java.lang.Throwable getThrowableCause(java.lang.Throwable e)

Get the original cause of an exception.

getThrowableMessage

public static java.lang.String getThrowableMessage(java.lang.Throwable e)

Get the original message of an exception.

getThrowableConfigurationException

public static ConfigurationException getThrowableConfigurationException(java.lang.Throwable e)

Get the original ConfigurationException of an exception.

getAllInterfaces

public static java.util.List<java.lang.Class<?>> getAllInterfaces(java.lang.Class<?> cls)

Get all implemented interfaces and classes. Note: includes cls and Object.class