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The Standard JSF Component Library
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For JSF 11 only, JSP pages included via <jsp:include> or any custom action that dynamically includes another page from the same Web application, such as JSTL s <c:import>, must use an <f:subview> (either inside the included page itself, or surrounding the <jsp:include> or custom action that is including the page) If the renderKitId attribute is present, its value is stored in UIViewRoot If the renderKitId attribute is not present, then the default render-kit identifier as returned by ApplicationgetDefaultRenderKitId( ) is stored in UIViewRoot if it is not null Otherwise, the render-kit identifier as specified by the constant RenderKitFactory HTML_BASIC_RENDER_KIT is stored in UIViewRoot If the locale attribute is present, its value overrides the Locale stored in UIViewRoot, normally set by the ViewHandler, and the doStartTag( ) method must store it by calling UIViewRootsetLocale( )
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The f:viewParam Tag (20)
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The f:viewParam tag enables a page author to declaratively register a UIViewParameter as metadata associated with the parent view, and must be a child of the f:metadata tag The main purpose of view parameters is to support bookmarkable Facelet views that are invoked via the HTTP GET operation Since UIViewParameter extends UIInput, view parameters can be fortified with converters and validators Validators can be especially helpful, since they can be used to validate that only valid data is specified as a request parameter value within the bookmarkable URL
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PART III
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Attributes
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Attribute binding (20) converter (20) converterMessage (20) Type ValueExpression Description A ValueExpression that evaluates to an object of type javaxfaces componentUIViewParameter The fully qualified name of a class that implements the javaxfaces convertConverter interface When present, this overrides the default Converter validation message The message can be a ValueExpression The identifier for the component Indicates the maximum length of the value specified in the value attribute If not specified, then the value can be of any length Required false
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ValueExpression
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false
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String
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false
id (20) maxlength (20)
String int
false false
(continued)
Part III:
JavaSer ver Faces Tools and Libraries
Attribute name (20)
Type String
Description Specifies the name of the view parameter, which defines the query parameter name in the URL rendered by the h:link tag A boolean flag that indicates whether or not a value is required for this view parameter When present, this overrides the default required validation message The message can be a ValueExpression If specified, then the value must be a MethodExpression that refers to a method that has the same signature as the validate method in the javaxfaces validatorValidator interface When present, this overrides the default Validator validation message The message can be a ValueExpression The value of the component A MethodExpression that refers to a method that returns void and accepts a single ValueChangeEvent argument (10, 11, 12, 20) A MethodExpression that refers to a method that takes zero parameters and has a return type of void Bear in mind that with this type of method signature, there is no way to determine the old and new values of the component (20)
Required true
required (20) requiredMessage (20)
Boolean
false
String
false
validator (20)
MethodExpression
false
validatorMessage (20)
String
false
value (20) valueChangeListener (20)
Object MethodExpression
false false
Example Usage
<f:metadata> <f:viewParam name="customerId" value="#{customercustomerId}"> <f:validateLongRange /> </f:viewParam> </f:metadata>
16:
The Standard JSF Component Library
The Standard HTML Library
The Standard HTML Library is accessible in Facelets and JSP as a tag library with a URI of http://javasuncom/jsf/html and default prefix of h A quick reference of the standard HTML library is provided in Table 16-2
Tag h:body
Description Renders the HTML <body> element This element is required when using resource relocation, such as rendering references to JavaScript or CSS files Renders an HTML button that, when clicked, submits an HTTP GET (not post) to the JSF server The destination of the button comes from a JSF navigation rule (implicit or explicit) The child container component for a dataTable component The element can be equipped with header and footer facets for a column header and footer Its children are used to display/process the column s data Renders as an HTML <input> element with the type attribute set to submit , reset , or image , depending on the value of this action element s type and image attribute values, the name attribute set to the component s client ID, and the value attribute set to the component s value Renders as an HTML <a> element with an href attribute containing # , and an onclick attribute Renders an HTML <table>element where UIColumn child components are responsible for rendering the table columns The columns can hold any type of component, including input and command The value attribute value can be of any type, but the primary model type is the javaxfacesmodelDataModel class Both the dataTable component and its column children components may be equipped with header and footer facets The table rows are rendered within a <tbody> element with a <tr> element for each row and a <td> element for each column child The first row to render and how many rows to render can be specified by the first and rows attributes
JSF Version(s) 20
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