water.util

Class ReflectionUtils

java.lang.Object

water.util.ReflectionUtils

public class ReflectionUtils
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
ReflectionUtils()

Method Summary

Modifier and Type	Method and Description
static double	asDouble(java.lang.Object o)
static <T> java.lang.Class<T>	findActualClassParameter(java.lang.Class clz, int parm) Reflection helper which returns the actual class for a type parameter, even if itself is parameterized.
static java.lang.Class	findActualFieldClass(java.lang.Class clz, java.lang.reflect.Field f) Reflection helper which returns the actual class for a field which has a parameterized type.
static java.lang.Class	findMethodOutputClass(java.lang.reflect.Method method) Reflection helper which returns the actual class for a method's parameter.
static java.lang.Class	findMethodParameterClass(java.lang.reflect.Method method, int parm) Reflection helper which returns the actual class for a method's parameter.
static java.lang.reflect.Field	findNamedField(java.lang.Object o, java.lang.String field_name) Return the Field for the specified name.
static <T> T	getFieldValue(java.lang.Object o, java.lang.String fieldName)
static <T> T	newInstance(java.lang.String className, java.lang.Class<T> instanceOf)

Methods inherited from class java.lang.Object

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

Constructor Detail

ReflectionUtils

public ReflectionUtils()

Method Detail

findActualClassParameter

public static <T> java.lang.Class<T> findActualClassParameter(java.lang.Class clz,
                                                              int parm)

Reflection helper which returns the actual class for a type parameter, even if itself is parameterized.

findMethodParameterClass

public static java.lang.Class findMethodParameterClass(java.lang.reflect.Method method,
                                                       int parm)

Reflection helper which returns the actual class for a method's parameter.

findMethodOutputClass

public static java.lang.Class findMethodOutputClass(java.lang.reflect.Method method)

Reflection helper which returns the actual class for a method's parameter.

findActualFieldClass

public static java.lang.Class findActualFieldClass(java.lang.Class clz,
                                                   java.lang.reflect.Field f)

Reflection helper which returns the actual class for a field which has a parameterized type. E.g., DeepLearningV2's "parameters" class is in parent ModelBuilderSchema, and is parameterized by type parameter P.

asDouble

public static double asDouble(java.lang.Object o)

findNamedField

public static java.lang.reflect.Field findNamedField(java.lang.Object o,
                                                     java.lang.String field_name)

Return the Field for the specified name.

Java reflection will either give you all the public fields all the way up the class hierarchy (getField()), or will give you all the private/protected/public only in the single class (getDeclaredField()). This method uses the latter but walks up the class hierarchy.

getFieldValue

public static <T> T getFieldValue(java.lang.Object o,
                                  java.lang.String fieldName)

newInstance

public static <T> T newInstance(java.lang.String className,
                                java.lang.Class<T> instanceOf)
                         throws java.lang.ClassNotFoundException,
                                java.lang.IllegalAccessException,
                                java.lang.InstantiationException

Throws:

java.lang.ClassNotFoundException

java.lang.IllegalAccessException

java.lang.InstantiationException