com.github.drinkjava2.jdialects

Class ClassCacheUtils

java.lang.Object

com.github.drinkjava2.jdialects.ClassCacheUtils

public abstract class ClassCacheUtils
extends Object

ClassCacheUtils is utility class to cache some info of classes read and write method

Since:

1.0.0

Author:

Yong Zhu (Yong9981@gmail.com)

Field Summary

Fields

Modifier and Type	Field and Description
protected static ConcurrentHashMap<String,Class<?>>	classExistCache
protected static Map<Class<?>,Map<String,Method>>	classReadMethods
protected static Map<Class<?>,Map<String,Method>>	classWriteMethods
protected static Map<Class<?>,Map<String,Object>>	uniqueMethodCache

Constructor Summary

Constructors

Constructor and Description
ClassCacheUtils()

Method Summary

Modifier and Type	Method and Description
static void	cacheReadWriteMethodsAndBoxField(Class<?> clazz)
static Class<?>	checkClassExist(String className) Check class if exist, if exit return it, otherwise return null
static Method	checkMethodExist(Class<?> clazz, String uniqueMethodName) Check if a unique method name exists in class, if exist return the method, otherwise return null
static void	copyBean(Object from, Object to) Shallow copy source bean's field to target bean's same name field
static Object	createNewEntity(Class<?> entityClass) Create a new Object by given entityClass, if any exception happen, throw DialectException
static Method	getClassFieldReadMethod(Class<?> clazz, String fieldName) Return cached class field read method to avoid each time use reflect
static Method	getClassFieldWriteMethod(Class<?> clazz, String fieldName) Return cached class field write method to avoid each time use reflect
static Map<String,Method>	getClassReadMethods(Class<?> clazz) Return cached class read methods to avoid each time use reflect
static Map<String,Method>	getClassWriteMethods(Class<?> clazz) Return cached class write methods to avoid each time use reflect
static Object	readValueFromBeanField(Object entityBean, String fieldName) Read value from entityBean field
static void	registerClass(Class<?> clazz)
static void	writeValueToBeanField(Object entityBean, String fieldName, Object value) write value to entityBean field

Methods inherited from class java.lang.Object

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

Field Detail

classExistCache

protected static ConcurrentHashMap<String,Class<?>> classExistCache

uniqueMethodCache

protected static Map<Class<?>,Map<String,Object>> uniqueMethodCache

classReadMethods

protected static Map<Class<?>,Map<String,Method>> classReadMethods

classWriteMethods

protected static Map<Class<?>,Map<String,Method>> classWriteMethods

Constructor Detail

ClassCacheUtils

public ClassCacheUtils()

Method Detail

checkClassExist

public static Class<?> checkClassExist(String className)

Check class if exist, if exit return it, otherwise return null

registerClass

public static void registerClass(Class<?> clazz)

checkMethodExist

public static Method checkMethodExist(Class<?> clazz,
                                      String uniqueMethodName)

Check if a unique method name exists in class, if exist return the method, otherwise return null

cacheReadWriteMethodsAndBoxField

public static void cacheReadWriteMethodsAndBoxField(Class<?> clazz)

getClassReadMethods

public static Map<String,Method> getClassReadMethods(Class<?> clazz)

Return cached class read methods to avoid each time use reflect

getClassFieldReadMethod

public static Method getClassFieldReadMethod(Class<?> clazz,
                                             String fieldName)

Return cached class field read method to avoid each time use reflect

getClassWriteMethods

public static Map<String,Method> getClassWriteMethods(Class<?> clazz)

Return cached class write methods to avoid each time use reflect

getClassFieldWriteMethod

public static Method getClassFieldWriteMethod(Class<?> clazz,
                                              String fieldName)

Return cached class field write method to avoid each time use reflect

readValueFromBeanField

public static Object readValueFromBeanField(Object entityBean,
                                            String fieldName)

Read value from entityBean field

writeValueToBeanField

public static void writeValueToBeanField(Object entityBean,
                                         String fieldName,
                                         Object value)

write value to entityBean field

createNewEntity

public static Object createNewEntity(Class<?> entityClass)

Create a new Object by given entityClass, if any exception happen, throw DialectException

copyBean

public static void copyBean(Object from,
                            Object to)

Shallow copy source bean's field to target bean's same name field