com.centit.support.algorithm

Class ReflectionOpt

java.lang.Object

com.centit.support.algorithm.ReflectionOpt

public abstract class ReflectionOpt
extends Object

提供一些反射方面缺失功能的封装.

Author:

codefan

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.slf4j.Logger	logger

Method Summary

Modifier and Type	Method and Description
static Object	attainExpressionValue(Object sourceObj, String expression) 获得 对象的 属性; 目前只能支持一维数组的获取，多维数据暂时不支持，目前看也没有这个需要
<T> T	createObjectFromMap(Class<T> clazz, Map<String,Object> properties)
static Object	forceGetFieldValue(Object object, Field field)
static Object	forceGetProperty(Object object, String propertyName)
static void	forceSetProperty(Object object, String propertyName, Object newValue)
static List<Method>	getAllGetterMethod(Class<?> type)
static List<Method>	getAllSetterMethod(Class<?> type)
static Boolean	getBooleanFieldValue(Object obj, String fieldName)
static Method	getBooleanGetterMethod(Class<?> classType, String fieldName)
static String	getCurrentMethodName()
static Field	getDeclaredField(Class<?> clazz, String propertyName)
static Field	getDeclaredField(Object object, String propertyName)
static Field[]	getFields(Object object)
static List<Field>	getFieldsByType(Object object, Class<?> type)
static Object	getFieldValue(Object obj, Field field)
static Object	getFieldValue(Object obj, String fieldName)
static Method	getGetterMethod(Class<?> classType, Class<?> propertyType, String fieldName)
static Method	getGetterMethod(Class<?> classType, String fieldName)
static String	getJavaTypeName(Class<?> type)
static LeftRightPair<Method,Object[]>	getMatchBestMethod(Class<?> classType, String methodName, Map<String,Object> params)
static Class<?>	getPropertyType(Class<?> type, String name)
static Method	getSetterMethod(Class<?> classType, Class<?> propertyType, String fieldName)
static Class<?>	getSuperClassGenricType(Class<?> clazz)
static Class<?>	getSuperClassGenricType(Class<?> clazz, int index)
static <T> Object	invokeBinaryOpt(T demander, String smethod, T param)
static Object	invokeMethod(Object demander, String smethod, Object... params)
static Object	invokeNoParamFunc(Object demander, String smethod)
static Object	invokePrivateMethod(Object object, String methodName, Object... params)
static boolean	isArray(Object obj) 判断一个对象是否是 数组[]、Collection(List)
static boolean	isArrayType(Class<?> tp) 判断一个类型是否是 数组[]、Collection(List)
static boolean	isNumberType(Class<?> tp)
static boolean	isPrimitiveType(Class<?> tp) isPrimitiveType 判断一个类型是否是基础类型 int boolean void float double char 或者单值类型 String Date Integer Float Double， scalar
static boolean	isScalarType(Class<?> tp) isScalarType 判断一个类型是否是基础类型 int boolean void float double char 或者单值类型 String Date Integer Float Double， scalar
static String	mapGetter2Field(Method method) 将getter方法映射为对应属性
static String	methodNameToField(String methodName)
static boolean	setFieldValue(Object object, String fieldName, Object newValue)
static boolean	setFieldValue(Object object, String fieldName, Object newValue, Class<?> paramType)

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected static final org.slf4j.Logger logger

Method Detail

getDeclaredField

public static Field getDeclaredField(Object object,
                                     String propertyName)
                              throws NoSuchFieldException

Throws:

NoSuchFieldException

getDeclaredField

public static Field getDeclaredField(Class<?> clazz,
                                     String propertyName)
                              throws NoSuchFieldException

Throws:

NoSuchFieldException

forceGetFieldValue

public static Object forceGetFieldValue(Object object,
                                        Field field)

getFieldValue

public static Object getFieldValue(Object obj,
                                   String fieldName)

setFieldValue

public static boolean setFieldValue(Object object,
                                    String fieldName,
                                    Object newValue,
                                    Class<?> paramType)

setFieldValue

public static boolean setFieldValue(Object object,
                                    String fieldName,
                                    Object newValue)

getFieldValue

public static Object getFieldValue(Object obj,
                                   Field field)

forceGetProperty

public static Object forceGetProperty(Object object,
                                      String propertyName)
                               throws NoSuchFieldException

Throws:

NoSuchFieldException

forceSetProperty

public static void forceSetProperty(Object object,
                                    String propertyName,
                                    Object newValue)
                             throws NoSuchFieldException

Throws:

NoSuchFieldException

getFields

public static Field[] getFields(Object object)

getFieldsByType

public static List<Field> getFieldsByType(Object object,
                                          Class<?> type)

getPropertyType

public static Class<?> getPropertyType(Class<?> type,
                                       String name)
                                throws NoSuchFieldException

Throws:

NoSuchFieldException

methodNameToField

public static String methodNameToField(String methodName)

getGetterMethod

public static Method getGetterMethod(Class<?> classType,
                                     Class<?> propertyType,
                                     String fieldName)

getGetterMethod

public static Method getGetterMethod(Class<?> classType,
                                     String fieldName)

getSetterMethod

public static Method getSetterMethod(Class<?> classType,
                                     Class<?> propertyType,
                                     String fieldName)

getMatchBestMethod

public static LeftRightPair<Method,Object[]> getMatchBestMethod(Class<?> classType,
                                                                String methodName,
                                                                Map<String,Object> params)

attainExpressionValue

public static Object attainExpressionValue(Object sourceObj,
                                           String expression)

获得 对象的 属性; 目前只能支持一维数组的获取，多维数据暂时不支持，目前看也没有这个需要

Parameters:

sourceObj - 可以是 任意对象

expression - 表达式 a.b.[1].c 也可以 a.b.[1].[2].c 间接实现二维数组 这个地方没有引入词法分析器，是用"."来分割的，每一段可以理解为一个操作 如果是一个字符串就是找对应的属性，如果是"[数字]"就是针对数组找对应的元素

Returns:

返回结果

getBooleanFieldValue

public static Boolean getBooleanFieldValue(Object obj,
                                           String fieldName)

getBooleanGetterMethod

public static Method getBooleanGetterMethod(Class<?> classType,
                                            String fieldName)

mapGetter2Field

public static String mapGetter2Field(Method method)

将getter方法映射为对应属性

Parameters:

method - Getter方法

Returns:

对应属性名

getAllGetterMethod

public static List<Method> getAllGetterMethod(Class<?> type)

getAllSetterMethod

public static List<Method> getAllSetterMethod(Class<?> type)

invokeNoParamFunc

public static Object invokeNoParamFunc(Object demander,
                                       String smethod)

invokeMethod

public static Object invokeMethod(Object demander,
                                  String smethod,
                                  Object... params)

invokeBinaryOpt

public static <T> Object invokeBinaryOpt(T demander,
                                         String smethod,
                                         T param)

invokePrivateMethod

public static Object invokePrivateMethod(Object object,
                                         String methodName,
                                         Object... params)
                                  throws NoSuchMethodException

Throws:

NoSuchMethodException

getSuperClassGenricType

public static Class<?> getSuperClassGenricType(Class<?> clazz)

Parameters:

clazz - The class to introspect

Returns:

the first generic declaration, or Object.class if cannot be determined

getSuperClassGenricType

public static Class<?> getSuperClassGenricType(Class<?> clazz,
                                               int index)

Parameters:

clazz - clazz The class to introspect

index - the Index of the generic declaration,start from 0.

Returns:

the index generic declaration, or Object.class if cannot be determined

isPrimitiveType

public static boolean isPrimitiveType(Class<?> tp)

isPrimitiveType 判断一个类型是否是基础类型 int boolean void float double char 或者单值类型 String Date Integer Float Double， scalar

Parameters:

tp - isPrimitiveType

Returns:

isPrimitiveType

isScalarType

public static boolean isScalarType(Class<?> tp)

isScalarType 判断一个类型是否是基础类型 int boolean void float double char 或者单值类型 String Date Integer Float Double， scalar

Parameters:

tp - isScalarType

Returns:

isScalarType

isNumberType

public static boolean isNumberType(Class<?> tp)

isArray

public static boolean isArray(Object obj)

判断一个对象是否是 数组[]、Collection(List)

Parameters:

obj - 对象

Returns:

否是 数组[]

isArrayType

public static boolean isArrayType(Class<?> tp)

判断一个类型是否是 数组[]、Collection(List)

Parameters:

tp - 类型

Returns:

否是 数组[]

getCurrentMethodName

public static String getCurrentMethodName()

getJavaTypeName

public static String getJavaTypeName(Class<?> type)

createObjectFromMap

public <T> T createObjectFromMap(Class<T> clazz,
                                 Map<String,Object> properties)
                          throws InstantiationException,
                                 IllegalAccessException,
                                 IllegalArgumentException,
                                 InvocationTargetException

Throws:

InstantiationException

IllegalAccessException

IllegalArgumentException

InvocationTargetException