TransformTag (Spring Framework 4.3.30.RELEASE API)

java.lang.Object
- javax.servlet.jsp.tagext.TagSupport
- - org.springframework.web.servlet.tags.RequestContextAwareTag
  - - org.springframework.web.servlet.tags.HtmlEscapingAwareTag
    - - org.springframework.web.servlet.tags.TransformTag

All Implemented Interfaces:
Serializable, IterationTag, JspTag, Tag, TryCatchFinally
```
public class TransformTag
extends HtmlEscapingAwareTag
```
Tag for transforming reference data values from form controllers and other objects inside a spring:bind tag (or a data-bound form element tag from Spring's form tag library).
The BindTag has a PropertyEditor that it uses to transform properties of a bean to a String, usable in HTML forms. This tag uses that PropertyEditor to transform objects passed into this tag.
Since:
20.09.2003
Author:
Alef Arendsen, Juergen Hoeller
See Also:
BindTag, Serialized Form

Field Summary
- Fields inherited from class org.springframework.web.servlet.tags.RequestContextAwareTag
  logger, REQUEST_CONTEXT_PAGE_ATTRIBUTE
- 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

Constructor Summary
Constructors
Constructor Description
TransformTag()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected int`	`doStartTagInternal()`	Called by doStartTag to perform the actual work.
`void`	`setScope(String scope)`	Set the scope to export the variable to.
`void`	`setValue(Object value)`	Set the value to transform, using the appropriate PropertyEditor from the enclosing BindTag.
`void`	`setVar(String var)`	Set PageContext attribute name under which to expose a variable that contains the result of the transformation.

Methods inherited from class org.springframework.web.servlet.tags.HtmlEscapingAwareTag
htmlEscape, isDefaultHtmlEscape, isHtmlEscape, isResponseEncodedHtmlEscape, setHtmlEscape

Methods inherited from class org.springframework.web.servlet.tags.RequestContextAwareTag
doCatch, doFinally, doStartTag, getRequestContext

Methods inherited from class javax.servlet.jsp.tagext.TagSupport
doAfterBody, doEndTag, findAncestorWithClass, getId, getParent, getValue, getValues, release, removeValue, setId, setPageContext, setParent, setValue

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

- Constructor Detail
  - TransformTag
```
public TransformTag()
```
- Method Detail
  - setValue
```
public void setValue(Object value)
```
    Set the value to transform, using the appropriate PropertyEditor from the enclosing BindTag.
    The value can either be a plain value to transform (a hard-coded String value in a JSP or a JSP expression), or a JSP EL expression to be evaluated (transforming the result of the expression).
  - setVar
```
public void setVar(String var)
```
    Set PageContext attribute name under which to expose a variable that contains the result of the transformation.
    See Also:
    setScope(java.lang.String), JspContext.setAttribute(java.lang.String, java.lang.Object)
  - setScope
```
public void setScope(String scope)
```
    Set the scope to export the variable to. Default is SCOPE_PAGE ("page").
    See Also:
    setVar(java.lang.String), TagUtils.SCOPE_PAGE, JspContext.setAttribute(java.lang.String, java.lang.Object)
  - doStartTagInternal
```
protected final int doStartTagInternal()
                                throws JspException
```
    Description copied from class: RequestContextAwareTag
    Called by doStartTag to perform the actual work.
    Specified by:
    doStartTagInternal in class RequestContextAwareTag
    Returns:
    same as TagSupport.doStartTag
    Throws:
    JspException
    See Also:
    TagSupport.doStartTag()