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The Standard JSF Component Library
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Attributes
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Attribute for (20) Type String Description Usage of the for attribute with the f:setPropertyActionListener tag only has significance when the tag is nested as a child of a Composite Component If specified, then the value must be equal to the value of an id attribute associated with an exposed object A ValueExpression to be stored as the value of the target attribute A ValueExpression that is the destination of the value attribute Required Yes (if nested as a child tag of a Composite Component), otherwise, No
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value target
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ValueExpression ValueExpression
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Example Usage
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<h:commandButton action="#{backingBeanregisterUser}" value="Register"> <f:setPropertyActionListener target="#{sessionScopeUser}" value="#{User}"/> </h:commandButton>
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PART III
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The f:subview Tag
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UIComponent class: javaxfacescomponentUINamingContainer Component type: javaxfacesNamingContainer The subview component is useful with JSP but serves no purpose with JSF 20 Facelets It serves as a container component for all UIComponents 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 and 20, its use is optional around JSP includes And in 11, 12, and 20 it can be used if you want a NamingContainer added to the component hierarchy for ID disambiguation
Attributes
Attribute binding Type ValueBinding (10, 11) or ValueExpression (12, 20) String boolean Description A ValueExpression expression to a backing bean property bound to the component instance for the UIComponent created by this custom action The component identifier of the component A boolean flag indicating whether or not this component is to be rendered during the RENDER_RESPONSE phase of the JSF lifecycle The default value is true Required No
id rendered
Yes No
Part III:
JavaSer ver Faces Tools and Libraries
Example Usage
Locates the closest parent UIComponent and creates a new UINamingContainer component, afterward attaching it as a child of the associated UIComponent Such a component provides a scope within which child component identifiers must be unique, but allows child components to have the same simple identifier as child components nested in some other naming container This is useful in the following scenarios: mainjsp
<f:view> <c:import url="foojsp"/> <c:import url="barjsp"/> </f:view>
foojsp
<f:subview id="aaa"> components and other content </f:subview>
barjsp
<f:subview id="bbb"> components and other content </f:subview>
In this scenario, <f:subview> custom actions in imported pages establish a naming scope for components within those pages Identifiers for <f:subview> custom actions nested in a single <f:view> custom action must be unique, but it is difficult for the page author (and impossible for the JSP page compiler) to enforce this restriction The following is an example showing a parent JSP page mainjsp:
<f:view> <f:subview id="aaa"> <c:import url="foojsp"/> </f:subview> <f:subview id="bbb"> <c:import url="barjsp"/> </f:subview> </f:view>
Contents of foojsp:
JSF components and other content
Contents of barjsp
JSF components and other content
In this scenario, the <f:subview> custom actions are in the including page, rather than in the included page As in the previous scenario, the id values of the two subviews must be unique; but this fact is much easier to verify using this style It is also possible to use this approach to include the same page more than once but maintain unique identifiers:
16:
The Standard JSF Component Library
Contents of mainjsp:
<f:view> <f:subview id="aaa"> <c:import url="foojsp"/> </f:subview> <f:subview id="bbb"> <c:import url="foojsp"/> </f:subview> </f:view>
Contents of foojsp:
JSF components and other content
In all of the preceding examples, note that foojsp and barjsp may not contain <f:view>
The f:validateBean Tag (20)
The f:validateBean tag provides integration with the JSR 303 Bean Validation API Using this tag causes a javaxfacesvalidatorBeanValidator instance to be registered on the parent UIComponent that implements EditableValueHolder, such as HtmlInputText When used in conjunction with a Composite Component, it causes a BeanValidator instance to be registered on the EditableValueHolder whose id equals the value of the for attribute It can also be used to encapsulate one or more child tags that correspond to UIComponents that implement EditableValueHolder, thus causing bean validation to take place on a set of components
PART III
Attributes
Attribute binding (20) disabled (20) Type ValueExpression Description A ValueExpression to a backing bean property of type javaxfaces validatorBeanValidator A boolean value that specifies whether or not the validation will take place If the f:validateBean tag is specified as a child of a tag that corresponds to an EditableValueHolder, and if disabled is true , then validation will not take place on that parent EditableValueHolder If the f:validateBean tag is used to encapsulate one or more child tags that correspond to EditableValueHolders, and if disabled is true , then validation will not take place on each child EditableValueHolder The default value is false Required false
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