DiffLinkTag (Apache JSPWiki 2.11.3 API)

java.lang.Object
- javax.servlet.jsp.tagext.TagSupport
- - org.apache.wiki.tags.WikiTagBase
  - - org.apache.wiki.tags.WikiLinkTag
    - - org.apache.wiki.tags.DiffLinkTag

All Implemented Interfaces:

java.io.Serializable, javax.servlet.jsp.tagext.IterationTag, javax.servlet.jsp.tagext.JspTag, javax.servlet.jsp.tagext.Tag, javax.servlet.jsp.tagext.TryCatchFinally
```
public class DiffLinkTag
extends WikiLinkTag
```
Writes a diff link. Body of the link becomes the link text.
Attributes
- page - Page name to refer to. Default is the current page.
- version - The older of these versions. May be an integer to signify a version number, or the text "latest" to signify the latest version. If not specified, will default to "latest". May also be "previous" to signify a version prior to this particular version.
- newVersion - The newer of these versions. Can also be "latest", or "previous". Defaults to "latest".
If the page does not exist, this tag will fail silently, and not evaluate its body contents.
Since:

2.0

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field Description

static java.lang.String VER_CURRENT

static java.lang.String VER_LATEST

static java.lang.String VER_PREVIOUS
- Fields inherited from class org.apache.wiki.tags.WikiLinkTag
  ANCHOR, m_format, m_pageName, m_template, URL
- Fields inherited from class org.apache.wiki.tags.WikiTagBase
  m_wikiContext
- 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

DiffLinkTag()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`doWikiStartTag()`	This method is allowed to do pretty much whatever he wants.
`java.lang.String`	`getNewVersion()`
`java.lang.String`	`getVersion()`
`void`	`initTag()`	This method is called when the tag is encountered within a new request, but before the setXXX() methods are called.
`void`	`setNewVersion(java.lang.String arg)`
`void`	`setVersion(java.lang.String arg)`

Methods inherited from class org.apache.wiki.tags.WikiLinkTag
doEndTag, getPage, getTemplate, setFormat, setPage, setTemplate

Methods inherited from class org.apache.wiki.tags.WikiTagBase
doCatch, doFinally, doStartTag, setId, setPageContext

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

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

- Field Detail
  - VER_LATEST
```
public static final java.lang.String VER_LATEST
```
    See Also:
    
    Constant Field Values
  - VER_PREVIOUS
```
public static final java.lang.String VER_PREVIOUS
```
    See Also:
    
    Constant Field Values
  - VER_CURRENT
```
public static final java.lang.String VER_CURRENT
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - DiffLinkTag
```
public DiffLinkTag()
```
- Method Detail
  - initTag
```
public void initTag()
```
    Description copied from class: WikiTagBase
    
    This method is called when the tag is encountered within a new request, but before the setXXX() methods are called. The default implementation does nothing.
    
    Overrides:
    
    initTag in class WikiLinkTag
  - getVersion
```
public final java.lang.String getVersion()
```
  - setVersion
```
public void setVersion(java.lang.String arg)
```
  - getNewVersion
```
public final java.lang.String getNewVersion()
```
  - setNewVersion
```
public void setNewVersion(java.lang.String arg)
```
  - doWikiStartTag
```
public final int doWikiStartTag()
                         throws java.io.IOException
```
    Description copied from class: WikiTagBase
    
    This method is allowed to do pretty much whatever he wants. We then catch all mistakes.
    
    Specified by:
    
    doWikiStartTag in class WikiTagBase
    
    Throws:
    
    java.io.IOException