org.encog.util.obj

Class ReflectionUtil

java.lang.Object

org.encog.util.obj.ReflectionUtil

public final class ReflectionUtil
extends java.lang.Object

This class includes some utilities to be used with reflection. This are mostly used by the Encog generic persistence classes.

Method Summary

Modifier and Type	Method and Description
static java.lang.reflect.Field	findField(java.lang.Class<?> c, java.lang.String name) Find the specified field, look also in superclasses.
static java.util.Collection<java.lang.reflect.Field>	getAllFields(java.lang.Class<?> c) Get all of the fields from the specified class as a collection.
static void	getAllFields(java.lang.Class<?> c, java.util.Collection<java.lang.reflect.Field> fields) Get all of the fields in the specified class and super classes.
static boolean	isInstanceOf(java.lang.Class<?> class1, java.lang.Class<?> class2) Determine if one class is an instance of the other class.
static boolean	isPrimitive(java.lang.Object obj) Determine if the specified object is a primitive.
static boolean	isSimple(java.lang.Object obj) Determine if an object is "simple", that is it should be persisted just with a .tostring.
static void	loadClassmap() Load the classmap file.
static void	loadStandardClassmap() Load the classmap file.
static java.lang.Class<?>	resolveEncogClass(java.lang.String name) Resolve an encog class using its simple name.
static java.lang.Object	resolveEnum(java.lang.reflect.Field field, java.lang.String value) Resolve an enumeration.
static <T> int	safeHashCode(T o) Generate a hash code for an object.

Methods inherited from class java.lang.Object

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

Method Detail

findField

public static java.lang.reflect.Field findField(java.lang.Class<?> c,
                                                java.lang.String name)

Find the specified field, look also in superclasses.

Parameters:

c - The class to search.

name - The name of the field we are looking for.

Returns:

The field.

getAllFields

public static java.util.Collection<java.lang.reflect.Field> getAllFields(java.lang.Class<?> c)

Get all of the fields from the specified class as a collection.

Parameters:

c - The class to access.

Returns:

All of the fields from this class and subclasses.

getAllFields

public static void getAllFields(java.lang.Class<?> c,
                                java.util.Collection<java.lang.reflect.Field> fields)

Get all of the fields in the specified class and super classes.

Parameters:

c - The class to check.

fields - A collection to hold the classes.

isInstanceOf

public static boolean isInstanceOf(java.lang.Class<?> class1,
                                   java.lang.Class<?> class2)

Determine if one class is an instance of the other class.

Parameters:

class1 - The class to check.

class2 - Is class1 an instance of class 2.

Returns:

True if class 1 is an instance of class 2.

isPrimitive

public static boolean isPrimitive(java.lang.Object obj)

Determine if the specified object is a primitive.

Parameters:

obj - The object to check.

Returns:

True if this object is primitive.

isSimple

public static boolean isSimple(java.lang.Object obj)

Determine if an object is "simple", that is it should be persisted just with a .tostring.

Parameters:

obj - The object to check.

Returns:

True if the object is simple.

loadStandardClassmap

public static void loadStandardClassmap()

Load the classmap file. This allows classes to be resolved using just the simple name.

loadClassmap

public static void loadClassmap()

Load the classmap file. This allows classes to be resolved using just the simple name.

resolveEncogClass

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

Resolve an encog class using its simple name.

Parameters:

name - The simple name of the class.

Returns:

The class requested.

resolveEnum

public static java.lang.Object resolveEnum(java.lang.reflect.Field field,
                                           java.lang.String value)

Resolve an enumeration.

Parameters:

field - The field to resolve.

value - The value to get the enum for.

Returns:

The enum that was resolved.

safeHashCode

public static <T> int safeHashCode(T o)

Generate a hash code for an object. Return 0 for null objects.

Type Parameters:

T - The type of object to generate for.

Parameters:

o - The object to generate.

Returns:

The hash code.