description
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(optional) Description of the attribute. Defaults to no description.
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name
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The unique name of the attribute being declared. A translation error
results if more than one attribute directive appears in
the same translation unit with the same name.
A translation error results if the value of a name attribute
of an attribute directive is equal to the value of the dynamic-attributes attribute of a tag directive
or the value of a name-given attribute of a variable directive.
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required
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(optional) Whether this attribute is required (true)
or optional (false). Defaults to false.
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rtexprvalue
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(optional) Whether the attribute’s value can be dynamically calculated
at runtime by an expression. Defaults to true. When this
element is set to true and the attribute definition also
includes either a deferred-value or deferred-method element
then the attribute accepts both dynamic and deferred expressions.
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type
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(optional) The runtime type of the attribute’s value. Defaults
to java.lang.String.
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deferredValue
|
(optional) Indicates whether the
attribute accepts deferred value expressions. Only one of deferredValue or deferredMethod can be true. If deferredValueType is
specified, the default for deferredValue is true.
Causes a translation error if specified in a tag file with a JSP version less
than 2.1.
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deferredValueType
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(optional) The type resulting from the evaluation of the attribute’s
value expression. The default is java.lang.String if no
type is specified. If both deferredValueType and deferredValue are specified, deferredValue must be true. If deferredValue is true, the default of deferredValueType is java.lang.Object. Causes a translation error
specified in a tag file with a JSP version less than 2.1.
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deferredMethod
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(optional) Indicates whether the
tag attribute accepts deferred method expressions. If deferredMethod and deferredMethodSignature are specified then deferredMethod must
be true. The default of deferredMethod is true if deferredMethodSignature is specified, otherwise the default of deferredMethod is
false. The presence of a deferred-method element in an
attribute definition precludes the inclusion of a deferred-value element.
Causes a translation error if specified in a tag file with a JSP version less
than 2.1.
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deferredMethodSignature
|
(optional) The signature of the method to be invoked by the expression
defined by the accompanying deferredMethod attribute. If deferredMethod is true and this attribute is not specified, the
method signature defaults to void methodName(). Causes
a translation error if specified in a tag file with a JSP version less than
2.1.
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fragment
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(optional) Whether this attribute is a fragment to be evaluated by the
tag handler (true) or a normal attribute to be evaluated
by the container before being passed to the tag handler.
If this attribute is true:
You do not specify the rtexprvalue attribute. The
container fixes the rtexprvalue attribute at true.
You do not specify the type attribute. The container
fixes the type attribute at javax.servlet.jsp.tagext.JspFragment.
Defaults to false.
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