<parameter> element

`<parameter>` element
	Appendix B. Tapestry Specification DTDs

`<parameter>` element

Appears in: <component-specification>

Defines a formal parameter of a component.

Figure B.24. <parameter> Attributes

Name	Type	Required ?	Default Value	Description
name	string	yes		The name of the parameter, which must be a valid Java identifier.
java-type	scalar name, or class name	no		Required for connected parameters. Specifies the type of the JavaBean property that a connected parameter writes and reads. The property must match this exact value, which can be a fully specified class name, or the name of a scalar Java type.
required	`yes\|no`	no	`no`	If `yes`, then the parameter must be bound (though it is possible that the binding's value will still be null).
property-name	string	no		For connected parameters only; allows the name of the property to differ from the name of the parameter. If not specified, the property name will be the same as the parameter name.
direction	`in\|form\|custom`	no	`custom`	Identifies the semantics of how the parameter is used by the component. `custom`, the default, means the component explicitly controls reading and writing values through the binding. `in` means the property is set from the parameter before the component renders, and is reset back to default value after the component renders. `form` means that the property is set from the parameter when the component renders (as with `in`). When the form is submitted, the value is read from the property and used to set the binding value after the component rewinds.


`<page-specification>` element		`<private-asset>` element