Elresolver jar file

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Will be coerced to a String. Use an empty array if the method has no parameters. Can be null , in which case the method's formal parameter types are assumed to be unknown. Returns: The result of the method invocation null if the method has a void return type. Throws: MethodNotFoundException - if no suitable method can be found. ELException - if an exception was thrown while performing base, method resolution.

If the exception thrown is an InvocationTargetException , extract its cause and pass it to the ELException constructor. Since: EL 2. This is not always the same as getValue. For example, in the case of an ArrayELResolver , the getType method will return the element type of the array, which might be a superclass of the type of the actual element that is currently in the specified array element. Returns: If the propertyResolved property of ELContext was set to true , then the most general acceptable type; otherwise undefined.

If this property is not true after this method is called, the caller can safely assume no value has been set. NullPointerException - if context is null PropertyNotFoundException - if the given base, property pair is handled by this ELResolver but the specified variable or property does not exist.

PropertyNotWritableException - if the given base, property pair is handled by this ELResolver but the specified variable or property is not writable. ELException - if an exception was thrown while attempting to set the property or variable. Returns: If the propertyResolved property of ELContext was set to true , then true if the property is read-only or false if not; otherwise undefined.

One use for this method is to assist tools in auto-completion. If the base parameter is null , the resolver must enumerate the list of top-level variables it can resolve. The Iterator returned must contain zero or more instances of FeatureDescriptor , in no guaranteed order. In the case of primitive types such as int , the value null must be returned. This is to prevent the useless iteration through all possible primitive values.

A return value of null indicates that this resolver does not handle the given base object or that the results are too complex to represent with this method and the getCommonPropertyType javax. Object method should be used instead. Each FeatureDescriptor will contain information about a single variable or property. In addition to the standard properties, the FeatureDescriptor must have two named attributes as set by the setValue method : TYPE - The value of this named attribute must be an instance of java.

Class and specify the runtime type of the variable or property. Boolean and indicates whether it is safe to attempt to resolve this property at design-time.

For instance, it may be unsafe to attempt a resolution at design time if the ELResolver needs access to a resource that is only available at runtime and no acceptable simulated value can be provided. The caller should be aware that the Iterator returned might iterate through a very large or even infinitely large set of properties. Care should be taken by the caller to not get stuck in an infinite loop.

This is a "best-effort" list. Not all ELResolver s will return completely accurate results, but all must be callable at both design-time and runtime i.