public Class ScopedAttributeELResolver

Implements abstract jakarta.el.ELResolver.getCommonPropertyType.

Doc from jakarta.el.ELResolver.getCommonPropertyType.

Returns the most general type that this resolver accepts for the property argument, given a base object. One use for this method is to assist tools in auto-completion.

This assists tools in auto-completion and also provides a way to express that the resolver accepts a primitive value, such as an integer index into an array. For example, the ArrayELResolver will accept any int as a property, so the return value would be Integer.class.

Parameters

context:ELContext

The context of this evaluation.

base:Object

The base object to return the most general property type for, or null to enumerate the set of top-level variables that this resolver can evaluate.

Returns:Class<?>

null if this ELResolver does not know how to handle the given base object; otherwise Object.class if any type of property is accepted; otherwise the most general property type accepted for the given base.

Annotations

@Override

Implements abstract jakarta.el.ELResolver.getType.

Doc from jakarta.el.ELResolver.getType.

For a given base and property, attempts to identify the most general type that is acceptable for an object to be passed as the value parameter in a future call to the setValue method.

If this resolver handles the given (base, property) pair, the propertyResolved property of the ELContext object must be set to true by the resolver, before returning. If this property is not true after this method is called, the caller should ignore the return value.

This is not always the same as getValue().getClass(). 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.

If the resolver or the property is read-only, this method must return null.

Parameters

context:ELContext

The context of this evaluation.

base:Object

The base object whose property value is to be analyzed, or null to analyze a top-level variable.

property:Object

The property or variable to return the acceptable type for.

Returns:Class<?>

If the propertyResolved property of ELContext was set to true, the most general acceptable type which must be null if the either the property or the resolver is read-only; otherwise undefined

Annotations

@Override

Exceptions

ELException:

if an exception was thrown while performing the property or variable resolution. The thrown exception must be included as the cause property of this exception, if available.

Implements abstract jakarta.el.ELResolver.getValue.

Doc from jakarta.el.ELResolver.getValue.

Attempts to resolve the given property object on the given base object.

If this resolver handles the given (base, property) pair, the propertyResolved property of the ELContext object must be set to true by the resolver, before returning. If this property is not true after this method is called, the caller should ignore the return value.

Parameters

elContext:ELContext

The context of this evaluation.

base:Object

The base object whose property value is to be returned, or null to resolve a top-level variable.

property:Object

The property or variable to be resolved.

Returns:Object

If the propertyResolved property of ELContext was set to true, then the result of the variable or property resolution; otherwise undefined.

Annotations

@Override

Exceptions

ELException:

if an exception was thrown while performing the property or variable resolution. The thrown exception must be included as the cause property of this exception, if available.

Implements abstract jakarta.el.ELResolver.isReadOnly.

Doc from jakarta.el.ELResolver.isReadOnly.

For a given base and property, attempts to determine whether a call to setValue will always fail.

If this resolver handles the given (base, property) pair, the propertyResolved property of the ELContext object must be set to true by the resolver, before returning. If this property is not true after this method is called, the caller should ignore the return value.

Parameters

context:ELContext

The context of this evaluation.

base:Object

The base object whose property value is to be analyzed, or null to analyze a top-level variable.

property:Object

The property or variable to return the read-only status for.

Returns:boolean

If the propertyResolved property of ELContext was set to true, then true if the property is read-only or false if not; otherwise undefined.

Annotations

@Override

Exceptions

ELException:

if an exception was thrown while performing the property or variable resolution. The thrown exception must be included as the cause property of this exception, if available.

Implements abstract jakarta.el.ELResolver.setValue.

Doc from jakarta.el.ELResolver.setValue.

Attempts to set the value of the given property object on the given base object.

If this resolver handles the given (base, property) pair, the propertyResolved property of the ELContext object must be set to true by the resolver, before returning. If this property is not true after this method is called, the caller can safely assume no value has been set.

Parameters

context:ELContext

The context of this evaluation.

base:Object

The base object whose property value is to be set, or null to set a top-level variable.

property:Object

The property or variable to be set.

val:Object

The value to set the property or variable to.

Annotations

@Override

Exceptions

ELException:

if an exception was thrown while attempting to set the property or variable. The thrown exception must be included as the cause property of this exception, if available.