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ELContextListener
s so that context objects
can be added whenever a new ELContext
is created.
ELResolver
to affect the way EL variables
and properties are resolved for EL expressions appearing in JSP pages
and tag files.
ELException
ELException
ValueExpression
ExpressionFactory
FunctionMapper
null
, returns
String.class
.
null
, returns
String.class
.
ELContext
associated with this
JspContext
.
JspApplicationContext.getExpressionFactory()
ValueExpression
s and
MethodExpression
s so that EL expressions can be
parsed and evaluated.
null
, and the property matches
the name of a JSP implicit object, returns an Iterator
containing FeatureDescriptor
objects with information
about each JSP implicit object resolved by this resolver.
null
, returns an
Iterator
containing FeatureDescriptor
objects
with information about each scoped attribute resolved by this
resolver.
JspApplicationContext
instance associated
with the web application for the given ServletContext
.
Throwable.getCause()
null
, and the property matches
the name of a JSP implicit object, returns null
to
indicate that no types are ever accepted to setValue()
.
null
, returns
Object.class
to indicate that any type is valid to
set for a scoped attribute.
null
, and the property matches
the name of a JSP implicit object, returns the implicit object.
null
, searches the page,
request, session and application scopes for an attribute with
the given name and returns it, or null
if no
attribute exists with the current name.
ELContext.getELResolver()
,
which can be obtained by
jspContext.getELContext().getELResolver()
.
true
if this attribute is to be passed a
MethodExpression
so that expression evaluation
can be deferred.
true
if this attribute is to be passed a
ValueExpression
so that expression evaluation
can be deferred.
null
, and the property matches
the name of a JSP implicit object, returns true
to indicate that implicit objects cannot be overwritten.
null
, returns false
to indicate that scoped attributes are never read-only.
ELResolver
classes that define the
object resolution rules that must be supported by a JSP container
with the new unified Expression Language.JspContext
serves as the base class for the
PageContext class and abstracts all information that is not specific
to servlets.JspException
with the specified detail
message and cause.
JspException
with the specified cause.
JspContext
for this invocation.
null
, and the property matches
the name of a JSP implicit object, throws
PropertyNotWritableException
to indicate that implicit
objects cannot be overwritten.
null
, sets an existing scoped
attribute to the new value, or creates a new scoped attribute if one
does not exist by this name.
ELResolver
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