ConverterTag (Java EE 5 SDK)

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Java EE 5 SDK

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javax.faces.webapp Class ConverterTag

java.lang.Object
  extended by javax.servlet.jsp.tagext.TagSupport
      extended by javax.faces.webapp.ConverterTag
所有已实现的接口:
Serializable, IterationTag, JspTag, Tag
Deprecated. This has been partially replaced by 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 JSP 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.

另请参见:
Serialized Form

字段摘要
 
Fields inherited from class javax.servlet.jsp.tagext.TagSupport
id, pageContext
 
Fields inherited from interface javax.servlet.jsp.tagext.IterationTag
EVAL_BODY_AGAIN
 
Fields inherited from interface javax.servlet.jsp.tagext.Tag
EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE
 
构造器摘要
ConverterTag()
          Deprecated.  
 
方法摘要
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 JSP page.
 void release()
          Deprecated. Release references to any acquired resources.
 void setBinding(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(String converterId)
          Deprecated. Set the identifer of the Converter instance to be created.
 
类方法继承 javax.servlet.jsp.tagext.TagSupport
doAfterBody, doEndTag, findAncestorWithClass, getId, getParent, getValue, getValues, removeValue, setId, setPageContext, setParent, setValue
 
类方法继承 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

构造器详细信息

ConverterTag

public ConverterTag()
Deprecated. 
方法详细信息

setConverterId

public void setConverterId(String converterId)
Deprecated. 

Set the identifer of the Converter instance to be created.

参数:
converterId - The identifier of the converter instance to be created.

setBinding

public void setBinding(String binding)
                throws JspException
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.

参数:
binding - The new expression
抛出异常:
JspException - if a JSP error occurs

doStartTag

public int doStartTag()
               throws JspException
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 JSP page. If the localValue of the UIComponent is a String, attempt to convert it.

规范说明:
doStartTag in interface Tag
重写:
doStartTag in class TagSupport
返回:
SKIP_BODY
抛出异常:
JspException - if a JSP error occurs
另请参见:
Tag.doStartTag()

release

public void release()
Deprecated. 

Release references to any acquired resources.

规范说明:
release in interface Tag
重写:
release in class TagSupport
另请参见:
Tag.release()

createConverter

protected Converter createConverter()
                             throws JspException
Deprecated. 

Create and return a new Converter to be registered on our surrounding UIComponent.

抛出异常:
JspException - if a new instance cannot be created
概述  软件包   类  树  已过时  索引  帮助 
Java EE 5 SDK

深圳电信培训中心.徐海蛟老师.
 上一个类   下一个类 框架    无框架    
摘要: 嵌套 | 字段 | 构造器 | 方法 详细信息: 字段 | 构造器 | 方法
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