ConverterELTag. The remainder of the functionality, namely, the
binding facility and the implementation of the createConverter() method, is now an implementation detail.public class ConverterTag extends TagSupport
ConverterTag is a base class for all Jakarta Server Pages custom actions
that create and register a Converter instance on the
ValueHolder associated with our most immediate
surrounding instance of a tag whose implementation class is a subclass
of UIComponentTag. To avoid creating duplicate instances when
a page is redisplayed, creation and registration of a Converter
occurs only if the corresponding UIComponent was
created (by the owning UIComponentTag) during the execution of the
current page.
This class may be used directly to implement a generic converter
registration tag (based on the converter-id specified by the
converterId attribute), or as a base class for tag
instances that support specific Converter subclasses. This
converterId attribute must refer to one of the well
known converter-ids, or a custom converter-id as defined in a
faces-config.xml file.
Subclasses of this class must implement the
createConverter() method, which creates and returns a
Converter instance. Any configuration properties that specify
behavior of this Converter must have been set by the
createConverter() method. Generally, this occurs
by copying corresponding attribute values on the tag instance.
This tag creates no output to the page currently being created. It
is used solely for the side effect of Converter creation.
id, pageContextEVAL_BODY_AGAINEVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE| Constructor and Description |
|---|
ConverterTag()
Deprecated.
|
| Modifier and Type | Method and Description |
|---|---|
protected Converter |
createConverter()
Deprecated.
Create and return a new
Converter to be registered
on our surrounding UIComponent. |
int |
doStartTag()
Deprecated.
Create a new instance of the specified
Converter
class, and register it with the UIComponent instance associated
with our most immediately surrounding UIComponentTag instance, if
the UIComponent instance was created by this execution of the
containing Jakarta Server Pages page. |
void |
release()
Deprecated.
Release references to any acquired resources.
|
void |
setBinding(java.lang.String binding)
Deprecated.
Set the expression that will be used to create a
ValueExpression
that references a backing bean property of the Converter instance to
be created. |
void |
setConverterId(java.lang.String converterId)
Deprecated.
Set the identifer of the
Converter instance to be created. |
doAfterBody, doEndTag, findAncestorWithClass, getId, getParent, getValue, getValues, removeValue, setId, setPageContext, setParent, setValuepublic void setConverterId(java.lang.String converterId)
Set the identifer of the Converter instance to be created.
converterId - The identifier of the converter instance to be
created.public void setBinding(java.lang.String binding)
throws JspException
Set the expression that will be used to create a ValueExpression
that references a backing bean property of the Converter instance to
be created.
binding - The new expressionJspException - if a Jakarta Server Pages error occurspublic int doStartTag()
throws JspException
Create a new instance of the specified Converter
class, and register it with the UIComponent instance associated
with our most immediately surrounding UIComponentTag instance, if
the UIComponent instance was created by this execution of the
containing Jakarta Server Pages page. If the localValue of the
UIComponent is a String, attempt to convert it.
doStartTag in interface TagdoStartTag in class TagSupportJspException - if a Jakarta Server Pages error occursTag.doStartTag()public void release()
Release references to any acquired resources.
release in interface Tagrelease in class TagSupportTag.release()protected Converter createConverter() throws JspException
Create and return a new Converter to be registered
on our surrounding UIComponent.
ConverterJspException - if a new instance cannot be created