Package javax.el

Class ELUtil

java.lang.Object

javax.el.ELUtil

class ELUtil
extends Object

Utility methods for this portion of the Jakarta Expression Language implementation

Methods on this class use a Map instance stored in ThreadLocal storage to minimize the performance impact on operations that take place multiple times on a single Thread. The keys and values of the Map are implementation private.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	ELUtil.ConstructorWrapper
private static class	ELUtil.MethodWrapper
private static class	ELUtil.Wrapper

Field Summary

Fields

Modifier and Type	Field	Description
static ExpressionFactory	exprFactory
private static ThreadLocal<Map<String,ResourceBundle>>	instance	The ThreadLocal variable used to record the javax.faces.context.FacesContext instance for each processing thread.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	ELUtil()	This class may not be constructed.

Method Summary

Modifier and Type	Method	Description
(package private) static Object[]	buildParameters(ELContext context, Class<?>[] parameterTypes, boolean isVarArgs, Object[] params)
(package private) static Constructor<?>	findConstructor(Class<?> klass, Class<?>[] paramTypes, Object[] params)
(package private) static Method	findMethod(Class<?> clazz, String methodName, Class<?>[] paramTypes, Object[] paramValues)
(package private) static Method	findMethod(Class<?> klass, String methodName, Class<?>[] paramTypes, Object[] params, boolean staticOnly)
private static ELUtil.Wrapper	findMostSpecificWrapper(List<ELUtil.Wrapper> candidates, Class<?>[] matchingTypes, boolean elSpecific, String errorMsg)
private static ELUtil.Wrapper	findWrapper(Class<?> clazz, List<ELUtil.Wrapper> wrappers, String name, Class<?>[] paramTypes, Object[] paramValues)
private static Class<?>	getBoxingTypeIfPrimitive(Class<?> clazz)
private static Class<?>[]	getComparingParamTypesForVarArgsMethod(Class<?>[] paramTypes, int length)
(package private) static Constructor<?>	getConstructor(Class<?> type, Constructor<?> c)
private static Map<String,ResourceBundle>	getCurrentInstance()
static String	getExceptionMessageString(ELContext context, String messageId)	Convenience method, calls through to getExceptionMessageString(ELContext,java.lang.String,Object []).
static String	getExceptionMessageString(ELContext context, String messageId, Object[] params)
(package private) static ExpressionFactory	getExpressionFactory()
(package private) static Method	getMethod(Class<?> type, Method m)
private static Class<?>[]	getTypesFromValues(Object[] values)
(package private) static Object	invokeConstructor(ELContext context, Constructor<?> constructor, Object[] params)
(package private) static Object	invokeMethod(ELContext context, Method method, Object base, Object[] params)
(package private) static boolean	isAssignableFrom(Class<?> src, Class<?> target)
private static boolean	isCoercibleFrom(Object src, Class<?> target)
private static int	isMoreSpecific(Class<?> type1, Class<?> type2, Class<?> matchingType, boolean elSpecific)
private static int	isMoreSpecific(ELUtil.Wrapper wrapper1, ELUtil.Wrapper wrapper2, Class<?>[] matchingTypes, boolean elSpecific)
private static final String	paramString(Class<?>[] types)
private static void	setCurrentInstance(Map<String,ResourceBundle> context)	Replace the Map with the argument context.

Methods inherited from class java.lang.Object

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

Field Details

exprFactory

public static ExpressionFactory exprFactory

instance

private static ThreadLocal<Map<String,ResourceBundle>> instance

The ThreadLocal variable used to record the javax.faces.context.FacesContext instance for each processing thread.

Constructor Details

ELUtil

private ELUtil()

This class may not be constructed.

Method Details

getCurrentInstance

private static Map<String,ResourceBundle> getCurrentInstance()

Returns:

a Map stored in ThreadLocal storage. This may be used by methods of this class to minimize the performance impact for operations that may take place multiple times on a given Thread instance.

setCurrentInstance

private static void setCurrentInstance(Map<String,ResourceBundle> context)

Replace the Map with the argument context.

Parameters:

context - the Map to be stored in ThreadLocal storage.

getExceptionMessageString

public static String getExceptionMessageString(ELContext context,
 String messageId)

Convenience method, calls through to getExceptionMessageString(ELContext,java.lang.String,Object []).

Parameters:

context - the ELContext from which the Locale for this message is extracted.

messageId - the messageId String in the ResourceBundle

Returns:

a localized String for the argument messageId

getExceptionMessageString

public static String getExceptionMessageString(ELContext context,
 String messageId,
 Object[] params)

getExpressionFactory

static ExpressionFactory getExpressionFactory()

findConstructor

static Constructor<?> findConstructor(Class<?> klass,
 Class<?>[] paramTypes,
 Object[] params)

invokeConstructor

static Object invokeConstructor(ELContext context,
 Constructor<?> constructor,
 Object[] params)

findMethod

static Method findMethod(Class<?> klass,
 String methodName,
 Class<?>[] paramTypes,
 Object[] params,
 boolean staticOnly)

invokeMethod

static Object invokeMethod(ELContext context,
 Method method,
 Object base,
 Object[] params)

findMethod

static Method findMethod(Class<?> clazz,
 String methodName,
 Class<?>[] paramTypes,
 Object[] paramValues)

findWrapper

private static ELUtil.Wrapper findWrapper(Class<?> clazz,
 List<ELUtil.Wrapper> wrappers,
 String name,
 Class<?>[] paramTypes,
 Object[] paramValues)

findMostSpecificWrapper

private static ELUtil.Wrapper findMostSpecificWrapper(List<ELUtil.Wrapper> candidates,
 Class<?>[] matchingTypes,
 boolean elSpecific,
 String errorMsg)

isMoreSpecific

private static int isMoreSpecific(ELUtil.Wrapper wrapper1,
 ELUtil.Wrapper wrapper2,
 Class<?>[] matchingTypes,
 boolean elSpecific)

isMoreSpecific

private static int isMoreSpecific(Class<?> type1,
 Class<?> type2,
 Class<?> matchingType,
 boolean elSpecific)

getBoxingTypeIfPrimitive

private static Class<?> getBoxingTypeIfPrimitive(Class<?> clazz)

getComparingParamTypesForVarArgsMethod

private static Class<?>[] getComparingParamTypesForVarArgsMethod(Class<?>[] paramTypes,
 int length)

paramString

private static final String paramString(Class<?>[] types)

isAssignableFrom

static boolean isAssignableFrom(Class<?> src,
 Class<?> target)

isCoercibleFrom

private static boolean isCoercibleFrom(Object src,
 Class<?> target)

getTypesFromValues

private static Class<?>[] getTypesFromValues(Object[] values)

getMethod

static Method getMethod(Class<?> type,
 Method m)

getConstructor

static Constructor<?> getConstructor(Class<?> type,
 Constructor<?> c)

buildParameters

static Object[] buildParameters(ELContext context,
 Class<?>[] parameterTypes,
 boolean isVarArgs,
 Object[] params)