freemarker.template.instruction
Class IfInstruction

java.lang.Object
  freemarker.template.instruction.ElseInstruction
      freemarker.template.instruction.IfInstruction

All Implemented Interfaces:

Instruction, TemplateProcessor, java.io.Serializable

public final class IfInstruction
extends ElseInstruction
implements java.io.Serializable

An instruction representing an if-else structure. The "if" part of the structure will be executed if the condition expression evaluates to true value.

Unexpectedly, this is a subclass of the ElseInstruction class.

Version:

$Id: IfInstruction.java 1153 2013-04-15 10:59:37Z run2000 $

See Also:

IfElseInstruction, ElseInstruction, Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface freemarker.template.instruction.Instruction

Instruction.EndType

Nested classes/interfaces inherited from interface freemarker.template.TemplateProcessor

TemplateProcessor.ExitStatus

Field Summary

Fields inherited from class freemarker.template.instruction.ElseInstruction

body

Constructor Summary

IfInstruction(Expression condition)
Constructor that takes an Expression to be tested when evaluating the "if" part of the instruction.

Method Summary

boolean	conditionMatches(TemplateWriteableHashModel modelRoot) Tests the condition for which this "if" statement should match.
Instruction.EndType	getEndType() Determine what type of end instruction this is, if any.
java.lang.String	toString() Returns a string representation of the object.

Methods inherited from class freemarker.template.instruction.ElseInstruction

callBuilder, isEndInstruction, process, setBody

Methods inherited from class java.lang.Object

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

Constructor Detail

IfInstruction

public IfInstruction(Expression condition)

Constructor that takes an Expression to be tested when evaluating the "if" part of the instruction.

Parameters:

condition - the condition for the if statement.

Throws:

java.lang.NullPointerException - condition is null

Method Detail

conditionMatches

public boolean conditionMatches(TemplateWriteableHashModel modelRoot)
                         throws TemplateException

Tests the condition for which this "if" statement should match.

Overrides:

conditionMatches in class ElseInstruction

Returns:

the condition to be tested

Throws:

TemplateException

getEndType

public Instruction.EndType getEndType()

Determine what type of end instruction this is, if any.

Specified by:

getEndType in interface Instruction

Overrides:

getEndType in class ElseInstruction

Returns:

ELSEIF, indicating that this is an elseif instruction

toString

public java.lang.String toString()

Returns a string representation of the object.

Overrides:

toString in class ElseInstruction

Returns:

a String representing this instruction subtree