Package org.apache.struts2.components

Class If

java.lang.Object

org.apache.struts2.components.Component

org.apache.struts2.components.If

public class If
extends Component

Perform basic condition flow. 'If' tag could be used by itself or with 'Else If' Tag and/or single/multiple 'Else' Tag.

• test* (Boolean) - Logic to determined if body of tag is to be displayed

 
  <s:if test="%{false}">
      <div>Will Not Be Executed</div>
  </s:if>
  <s:elseif test="%{true}">
      <div>Will Be Executed</div>
  </s:elseif>
  <s:else>
      <div>Will Not Be Executed</div>
  </s:else>
 
 

See Also:

• Else
• ElseIf

Field Summary

Fields

Modifier and Type	Field	Description
static final String	ANSWER

Fields inherited from class org.apache.struts2.components.Component

actionMapper, attributes, COMPONENT_STACK, devMode, escapeHtmlBody, performClearTagStateForTagPoolingServers, stack, standardAttributesMap, throwExceptionOnELFailure

Constructor Summary

Constructors

Constructor	Description
If(ValueStack stack)

Method Summary

Modifier and Type	Method	Description
boolean	end(Writer writer, String body)	Callback for the end tag of this component.
void	setTest(String test)
boolean	start(Writer writer)	Callback for the start tag of this component.

Methods inherited from class org.apache.struts2.components.Component

addAllAttributes, addParameter, completeExpression, copyAttributes, determineActionURL, determineNamespace, end, escapeHtmlBody, fieldError, findAncestor, findString, findString, findValue, findValue, findValue, getAttributes, getComponentStack, getNamespace, getPerformClearTagStateForTagPoolingServers, getStack, getStandardAttributes, isAcceptableExpression, isValidTagAttribute, popComponentStack, setActionMapper, setDevMode, setEscapeHtmlBody, setNotExcludedAcceptedPatterns, setPerformClearTagStateForTagPoolingServers, setThrowExceptionsOnELFailure, setUrlHelper, stripExpression, toString, usesBody

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

ANSWER

public static final String ANSWER

See Also:

• Constant Field Values

Constructor Details

If

public If(ValueStack stack)

Method Details

setTest

public void setTest(String test)

start

public boolean start(Writer writer)

Description copied from class: Component

Callback for the start tag of this component. Should the body be evaluated?

Overrides:

start in class Component

Parameters:

writer - the output writer.

Returns:

true if the body should be evaluated

end

public boolean end(Writer writer,
 String body)

Description copied from class: Component

Callback for the end tag of this component. Should the body be evaluated again?
NOTE: will pop component stack.

Overrides:

end in class Component

Parameters:

writer - the output writer.

body - the rendered body.

Returns:

true if the body should be evaluated again