java.lang.Object
- javax.faces.component.UIComponent
- - javax.faces.component.UIComponentBase
  - - javax.faces.component.UIOutput

All Implemented Interfaces:

EventListener, PartialStateHolder, StateHolder, TransientStateHolder, ValueHolder, ComponentSystemEventListener, FacesListener, SystemEventListenerHolder

Direct Known Subclasses:

HtmlBody, HtmlDoctype, HtmlHead, HtmlOutputFormat, HtmlOutputLabel, HtmlOutputLink, HtmlOutputText, UIInput, UIOutcomeTarget
```
public class UIOutput
extends UIComponentBase
implements ValueHolder
```
UIOutput is a UIComponent that has a value, optionally retrieved from a model tier bean via a value expression, that is displayed to the user. The user cannot directly modify the rendered value; it is for display purposes only.

During the Render Response phase of the request processing lifecycle, the current value of this component must be converted to a String (if it is not already), according to the following rules:
- If the current value is not null, and is not already a String, locate a Converter (if any) to use for the conversion, as follows:
  - If getConverter() returns a non-null Converter, use that one, otherwise
  - If Application.createConverter(Class), passing the current value's class, returns a non-null Converter, use that one.
- If the current value is not null and a Converter was located, call its getAsString() method to perform the conversion.
- If the current value is not null but no Converter was located, call toString() on the current value to perform the conversion.
By default, the rendererType property must be set to "javax.faces.Text". This value can be changed by calling the setRendererType() method.

Field Summary

Fields
Modifier and Type	Field and Description
`static String`	`COMPONENT_FAMILY` The standard component family for this component.
`static String`	`COMPONENT_TYPE` The standard component type for this component.

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Fields inherited from class javax.faces.component.UIComponent
ATTRS_WITH_DECLARED_DEFAULT_VALUES, BEANINFO_KEY, bindings, COMPOSITE_COMPONENT_TYPE_KEY, COMPOSITE_FACET_NAME, CURRENT_COMPONENT, CURRENT_COMPOSITE_COMPONENT, FACETS_KEY, HONOR_CURRENT_COMPONENT_ATTRIBUTES_PARAM_NAME, VIEW_LOCATION_KEY

Constructor Summary

Constructors
Constructor and Description

UIOutput()
Create a new UIOutput instance with default property values.

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Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`clearInitialState()` For each of the attached objects on this instance that implement `PartialStateHolder`, call `PartialStateHolder.clearInitialState()` on the attached object.
`Converter`	`getConverter()` Return the `Converter` (if any) that is registered for this `UIComponent`.
`String`	`getFamily()` Return the identifier of the component family to which this component belongs.
`Object`	`getLocalValue()` Return the local value of this `UIComponent` (if any), without evaluating any associated `ValueExpression`.
`Object`	`getValue()` Return the value property.
`void`	`markInitialState()` In addition to the actions taken in `UIComponentBase` when `PartialStateHolder.markInitialState()` is called, check if the installed `Converter` is a PartialStateHolder and if it is, call `PartialStateHolder.markInitialState()` on it.
`void`	`resetValue()` Convenience method to reset this component's value to the un-initialized state.
`void`	`restoreState(FacesContext context, Object state)` Perform any processing required to restore the state from the entries in the state Object.
`Object`	`saveState(FacesContext context)` Gets the state of the instance as a `Serializable` Object.
`void`	`setConverter(Converter converter)` Set the `Converter` (if any) that is registered for this `UIComponent`.
`void`	`setValue(Object value)` Set the value of this `UIComponent` (if any).

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Methods inherited from class javax.faces.component.UIComponentBase
addClientBehavior, addFacesListener, broadcast, decode, encodeBegin, encodeChildren, encodeEnd, findComponent, getAttributes, getChildCount, getChildren, getClientBehaviors, getClientId, getDefaultEventName, getEventNames, getFacesContext, getFacesListeners, getFacet, getFacetCount, getFacets, getFacetsAndChildren, getId, getListenersForEventClass, getParent, getPassThroughAttributes, getRenderer, getRendererType, getRendersChildren, getValueBinding, invokeOnComponent, isRendered, isTransient, processDecodes, processRestoreState, processSaveState, processUpdates, processValidators, queueEvent, removeFacesListener, restoreAttachedState, saveAttachedState, setId, setParent, setRendered, setRendererType, setTransient, setValueBinding, subscribeToEvent, unsubscribeFromEvent

Methods inherited from class javax.faces.component.UIComponent
encodeAll, getClientId, getCompositeComponentParent, getContainerClientId, getCurrentComponent, getCurrentCompositeComponent, getNamingContainer, getPassThroughAttributes, getResourceBundleMap, getStateHelper, getStateHelper, getTransientStateHelper, getTransientStateHelper, getValueExpression, initialStateMarked, isCompositeComponent, isInView, isVisitable, popComponentFromEL, processEvent, pushComponentToEL, restoreTransientState, saveTransientState, setInView, setValueExpression, visitTree

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - COMPONENT_TYPE
```
public static final String COMPONENT_TYPE
```
    The standard component type for this component.
    
    See Also:
    
    Constant Field Values
  - COMPONENT_FAMILY
```
public static final String COMPONENT_FAMILY
```
    The standard component family for this component.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - UIOutput
```
public UIOutput()
```
    Create a new UIOutput instance with default property values.
- Method Detail
  - getFamily
```
public String getFamily()
```
    Description copied from class: UIComponent
    
    Return the identifier of the component family to which this component belongs. This identifier, in conjunction with the value of the rendererType property, may be used to select the appropriate Renderer for this component instance.
    
    Specified by:
    
    getFamily in class UIComponent
  - getConverter
```
public Converter getConverter()
```
    Description copied from interface: ValueHolder
    
    Return the Converter (if any) that is registered for this UIComponent.
    
    Specified by:
    
    getConverter in interface ValueHolder
  - setConverter
```
public void setConverter(Converter converter)
```
    Description copied from interface: ValueHolder
    
    Set the Converter (if any) that is registered for this UIComponent.
    
    Specified by:
    
    setConverter in interface ValueHolder
    
    Parameters:
    
    converter - New Converter (or null)
  - getLocalValue
```
public Object getLocalValue()
```
    Description copied from interface: ValueHolder
    
    Return the local value of this UIComponent (if any), without evaluating any associated ValueExpression.
    
    Specified by:
    
    getLocalValue in interface ValueHolder
  - getValue
```
public Object getValue()
```
    Return the value property.
    
    Specified by:
    
    getValue in interface ValueHolder
    
    Since:
    
    2.2
  - setValue
```
public void setValue(Object value)
```
    Description copied from interface: ValueHolder
    
    Set the value of this UIComponent (if any).
    
    Specified by:
    
    setValue in interface ValueHolder
    
    Parameters:
    
    value - The new local value
  - resetValue
```
public void resetValue()
```
    Convenience method to reset this component's value to the un-initialized state.
    
    Since:
    
    2.2
  - markInitialState
```
public void markInitialState()
```
    In addition to the actions taken in UIComponentBase when PartialStateHolder.markInitialState() is called, check if the installed Converter is a PartialStateHolder and if it is, call PartialStateHolder.markInitialState() on it.
    
    Specified by:
    
    markInitialState in interface PartialStateHolder
    
    Overrides:
    
    markInitialState in class UIComponentBase
  - clearInitialState
```
public void clearInitialState()
```
    Description copied from class: UIComponentBase
    
    For each of the attached objects on this instance that implement PartialStateHolder, call PartialStateHolder.clearInitialState() on the attached object.
    
    Specified by:
    
    clearInitialState in interface PartialStateHolder
    
    Overrides:
    
    clearInitialState in class UIComponentBase
  - saveState
```
public Object saveState(FacesContext context)
```
    Description copied from interface: StateHolder
    Gets the state of the instance as a Serializable Object.
    
    If the class that implements this interface has references to instances that implement StateHolder (such as a UIComponent with event handlers, validators, etc.) this method must call the StateHolder.saveState(javax.faces.context.FacesContext) method on all those instances as well. This method must not save the state of children and facets. That is done via the StateManager
    
    This method must not alter the state of the implementing object. In other words, after executing this code:
    Object state = component.saveState(facesContext);
    component should be the same as before executing it.
    
    The return from this method must be Serializable
    Specified by:
    
    saveState in interface StateHolder
    
    Overrides:
    
    saveState in class UIComponentBase
  - restoreState
```
public void restoreState(FacesContext context,
                         Object state)
```
    Description copied from interface: StateHolder
    
    Perform any processing required to restore the state from the entries in the state Object.
    
    If the class that implements this interface has references to instances that also implement StateHolder (such as a UIComponent with event handlers, validators, etc.) this method must call the StateHolder.restoreState(javax.faces.context.FacesContext, java.lang.Object) method on all those instances as well.
    
    If the state argument is null, take no action and return.
    
    Specified by:
    
    restoreState in interface StateHolder
    
    Overrides:
    
    restoreState in class UIComponentBase

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Bij voorbaat dank.

Document heeft de 11/06/2005 gemaakt, de laatste keer de 18/08/2025 gewijzigd
Bron van het afgedrukte document:https://www.gaudry.be/nl/java-api-javaee-rf-javax/faces/component/uioutput.html

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Referenties

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Class UIOutput

Field Summary

Fields inherited from class javax.faces.component.UIComponent

Constructor Summary

Method Summary

Methods inherited from class javax.faces.component.UIComponentBase

Methods inherited from class javax.faces.component.UIComponent

Methods inherited from class java.lang.Object

Field Detail

COMPONENT_TYPE

COMPONENT_FAMILY

Constructor Detail

UIOutput

Method Detail

getFamily

getConverter

setConverter

getLocalValue

getValue

setValue

resetValue

markInitialState

clearInitialState

saveState

restoreState

Referenties