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)

Nested Class Summary

protected static class

ClassCacheUtils.ClassOrMethodNotExist

Field Summary

protected static Map<Class<?>,Field>	boxFieldCache
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

ClassCacheUtils()

Method Summary

static void	cacheReadWriteMethodsAndBoxField(Class<?> clazz)
static Class<?>	checkClassExist(String className) Check class if exist
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 Object	createNewEntity(Class<?> entityClass) Create a new Object by given entityClass, if any exception happen, throw SqlBoxException
static Field	getBoxField(Class<?> clazz) Return field box, this method is used for jSqlBox to directly access box field to bind SqlBox instance to a entity with its box field
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	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

boxFieldCache

protected static Map<Class<?>,Field> boxFieldCache

Constructor Detail

ClassCacheUtils

public ClassCacheUtils()

Method Detail

checkClassExist

public static Class<?> checkClassExist(String className)

Check class if exist

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

getBoxField

public static Field getBoxField(Class<?> clazz)

Return field box, this method is used for jSqlBox to directly access box field to bind SqlBox instance to a entity with its box field

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 SqlBoxException