itextsharp barcode example vb.net A Brief Review of JSF and JSP Tag Nomenclature in Java

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A Brief Review of JSF and JSP Tag Nomenclature
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Since Faces provides technology to be used within JSP, having a good understanding of custom JSP terminology and nomenclature is in order The following is a quick review of the various terms associated with custom JSP technology, which Faces relies upon Understanding these terms will be helpful since the remaining reference chapters dealing with custom JSF component libraries use them extensively
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Term JSP Action Description JSP actions are elements that can create and access programming language objects and affect the output stream The JSP 21 specification defines a set of approximately 16 standard actions that must be provided by any compliant JSP implementation These include <jsp:useBean>, <jsp:setProperty>, and so on JSP tags are responsible for invoking the underlying JSP actions JSP actions are invoked by JSP tags in a JSP page The terms JSP tag and JSP action are often used synonymously Custom JSP actions can be developed in addition to the standard actions provided in the JSP specification Development of custom actions has been supported since JSP version 11 Similar to standard JSP tags and actions, a custom JSP tag allows for the invocation of a custom JSP action
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Term Custom JSP Tag Library
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Description A collection of custom actions and custom tags, along with a tag library descriptor (tld) file To use JSF within JSP, custom JSP tag libraries are used An underlying Java class (UIComponent) that defines the behavior of a JSF user interface element A UIComponent can have code that renders itself embedded in them, or it can use a separate Renderer class An optional Java class (Renderer) that is used to render a user interface element It works in concert with an associated UIComponent class It is optional because UIComponent classes can include code to render themselves A custom JSP tag that extends UIComponentTag and provides a JSP-based method of invocation of an associated UIComponent and (optionally) a JSF Renderer (For more details on custom JSF UI component development, see 10)
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JSF UIComponent
JSF Renderer
JSF JSP Tag
Acquiring and Installing the Standard Libraries
The standard JSF component libraries are part of the specification and also come with any standard JSF implementation such as Sun s reference implementation or the MyFaces implementation 2 provides detailed instructions on how to download Sun s reference implementation along with how to install and integrate it into your Web applications
What You Get (Binary)
The jar files you get when downloading Sun s JSF reference implementation are jsf-apijar and jsf-impljar These are accompanied by a set of Jakarta Commons jar files that JSF is dependent on
JSF 12 TIP As of JSF 12, the JSF binaries are a part of the Java EE container and are no longer
available as a separate download Rather, one must use the JSF implementation provided by your container, such as Sun s Java System Application Server version 9
What You Get (Source)
The source for the standard components is available, but is not provided in the reference implementation Instead, the reference implementation source code is available from the javaserverfaces-sources project of javanet at ttps://javaserverfaces-sourcesdevjavanet/ A free user ID at javanet along with access to the javaserverfaces-source project is required, however
The Core and HTML Component Library Reference
This next section serves as a comprehensive reference for the standard core component library
The Standard Core Library
The standard core library is accessible in JSP via a JSP tag library with a URI of http://java suncom/jsf/core and default prefix of f A quick reference of the standard core library is provided in Table 19-1
19:
The Standard JSF Component Library
Component/Tag* actionListener attribute
Description Allows you to register an actionListener instance on the UIComponent associated with the closest parent UIComponent custom action Allows you to set an attribute or ValueExpression into the UIComponent associated with the closest parent UIComponent custom action An attribute is simply a name/value pair in the map returned by UIComponentgetAttributes( ) Installs a DateTimeConverter instance on the UIComponent associated with the closest parent UIComponent custom action Installs a NumberConverter instance on the UIComponent associated with the closest parent UIComponent custom action Installs a named Converter instance on the UIComponent associated with the closest parent UIComponent custom action Adds a named facet to the UIComponent associated with the closest parent UIComponent custom action Inserts a resource bundle localized for the locale of the current view, and exposes it (as a Map) in the request attributes for the current request This makes the contents of the ResourceBundle available via the expression language Adds a child UIParameter component to the UIComponent associated with the closest parent UIComponent custom action Some components, such as commandLink, convert nested param tags into URL query parameters The PhaseListener is a JSF 12-only component tag that adds a PhaseListener instance to the UIViewRoot associated with the closest parent UIViewRoot custom action Adds a child UISelectItem component to the UIComponent associated with the closest parent UIComponent custom action Adds a child UISelectItems component to the UIComponent associated with the closest parent UIComponent custom action Registers an ActionListener instance on the UIComponent associated with the closest parent UIComponent custom action This actionListener will cause the value given by the value attribute to be set into the ValueExpression given by the target attribute Container action for all JSF core and component custom actions used on a nested page included via <jsp:include> or any custom action that dynamically includes another page from the same Web application, such as JSTL s <c:import> Note: In JSF 12, a subview is not required for includes Registers a DoubleRangeValidator instance on the UIComponent associated with the closest parent UIComponent custom action
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