ConditionalTagBase (Apache Struts API Documentation)
Keywords: org.apache.struts.taglib.logic.ConditionalTagBase,ConditionalTagBase class

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## org.apache.struts.taglib.logic
Class ConditionalTagBase

    java.lang.Object
      |
      +--javax.servlet.jsp.tagext.TagSupport
            |
            +--org.apache.struts.taglib.logic.ConditionalTagBase

All Implemented Interfaces:
  java.io.Serializable, javax.servlet.jsp.tagext.Tag

Direct Known Subclasses:
  CompareTagBase, EmptyTag, MatchTag, MessagesPresentTag, PresentTag

public abstract class ConditionalTagBase
extends javax.servlet.jsp.tagext.TagSupport

Abstract base class for the various conditional evaluation tags.

Version:
  $Revision: 1.1 $ $Date: 2003-08-26 13:57:44 +0100 (Tue, 26 Aug 2003) $
Author:
  Craig R. McClanahan
See Also:
  Serialized Form

Field Summary
`protected java.lang.String` | `cookie` The name of the cookie to be used as a variable.
`protected java.lang.String` | `header` The name of the HTTP request header to be used as a variable.
`protected static MessageResources` | `messages` The message resources for this package.
`protected java.lang.String` | `name` The name of the JSP bean to be used as a variable (if `property` is not specified), or whose property is to be accessed (if `property` is specified).
`protected java.lang.String` | `parameter` The name of the HTTP request parameter to be used as a variable.
`protected java.lang.String` | `property` The name of the bean property to be used as a variable.
`protected java.lang.String` | `role` The name of the security role to be checked for.
`protected java.lang.String` | `scope` The scope to search for the bean named by the name property, or "any scope" if null.
`protected java.lang.String` | `user` The user principal name to be checked for.

Fields inherited from class javax.servlet.jsp.tagext.TagSupport
`id, pageContext`

Fields inherited from interface javax.servlet.jsp.tagext.Tag
`EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE`

Constructor Summary
`ConditionalTagBase()`

Method Summary
`protected abstract boolean` | `condition()` Evaluate the condition that is being tested by this particular tag, and return `true` if the nested body content of this tag should be evaluated, or `false` if it should be skipped.
`int` | `doEndTag()` Evaluate the remainder of the current page normally.
`int` | `doStartTag()` Perform the test required for this particular tag, and either evaluate or skip the body of this tag.
`java.lang.String` | `getCookie()`
`java.lang.String` | `getHeader()`
`java.lang.String` | `getName()`
`java.lang.String` | `getParameter()`
`java.lang.String` | `getProperty()`
`java.lang.String` | `getRole()`
`java.lang.String` | `getScope()`
`java.lang.String` | `getUser()`
`void` | `release()` Release all allocated resources.
`void` | `setCookie(java.lang.String cookie)`
`void` | `setHeader(java.lang.String header)`
`void` | `setName(java.lang.String name)`
`void` | `setParameter(java.lang.String parameter)`
`void` | `setProperty(java.lang.String property)`
`void` | `setRole(java.lang.String role)`
`void` | `setScope(java.lang.String scope)`
`void` | `setUser(java.lang.String user)`

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

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

Field Detail

### cookie

    protected java.lang.String cookie

  The name of the cookie to be used as a variable.

### header

    protected java.lang.String header

  The name of the HTTP request header to be used as a variable.

### messages

    protected static MessageResources messages

  The message resources for this package.

### name

    protected java.lang.String name

  The name of the JSP bean to be used as a variable (if `property` is not specified), or whose property is to be accessed (if `property` is specified).

### parameter

    protected java.lang.String parameter

  The name of the HTTP request parameter to be used as a variable.

### property

    protected java.lang.String property

  The name of the bean property to be used as a variable.

### role

    protected java.lang.String role

  The name of the security role to be checked for.

### scope

    protected java.lang.String scope

  The scope to search for the bean named by the name property, or "any scope" if null.

### user

    protected java.lang.String user

  The user principal name to be checked for.

Constructor Detail

### ConditionalTagBase

    public ConditionalTagBase()

Method Detail

### getCookie

    public java.lang.String getCookie()

### setCookie

    public void setCookie(java.lang.String cookie)

### getHeader

    public java.lang.String getHeader()

### setHeader

    public void setHeader(java.lang.String header)

### getName

    public java.lang.String getName()

### setName

    public void setName(java.lang.String name)

### getParameter

    public java.lang.String getParameter()

### setParameter

    public void setParameter(java.lang.String parameter)

### getProperty

    public java.lang.String getProperty()

### setProperty

    public void setProperty(java.lang.String property)

### getRole

    public java.lang.String getRole()

### setRole

    public void setRole(java.lang.String role)

### getScope

    public java.lang.String getScope()

### setScope

    public void setScope(java.lang.String scope)

### getUser

    public java.lang.String getUser()

### setUser

    public void setUser(java.lang.String user)

### doStartTag

    public int doStartTag()
                   throws javax.servlet.jsp.JspException

  Perform the test required for this particular tag, and either evaluate or skip the body of this tag.

  Specified by:
    `doStartTag` in interface `javax.servlet.jsp.tagext.Tag`
  Overrides:
    `doStartTag` in class `javax.servlet.jsp.tagext.TagSupport`
  Throws:
    `javax.servlet.jsp.JspException` - if a JSP exception occurs

### doEndTag

    public int doEndTag()
                 throws javax.servlet.jsp.JspException

  Evaluate the remainder of the current page normally.

  Specified by:
    `doEndTag` in interface `javax.servlet.jsp.tagext.Tag`
  Overrides:
    `doEndTag` in class `javax.servlet.jsp.tagext.TagSupport`
  Throws:
    `javax.servlet.jsp.JspException` - if a JSP exception occurs

### release

    public void release()

  Release all allocated resources.

  Specified by:
    `release` in interface `javax.servlet.jsp.tagext.Tag`
  Overrides:
    `release` in class `javax.servlet.jsp.tagext.TagSupport`

### condition

    protected abstract boolean condition()
                                  throws javax.servlet.jsp.JspException

  Evaluate the condition that is being tested by this particular tag, and return `true` if the nested body content of this tag should be evaluated, or `false` if it should be skipped. This method must be implemented by concrete subclasses.

  Throws:
    `javax.servlet.jsp.JspException` - if a JSP exception occurs

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