org.szegedi.expose.model
Class BooleanScalar

java.lang.Object
  |
  +--org.szegedi.expose.model.BooleanScalar

All Implemented Interfaces:

freemarker.template.TemplateModel, freemarker.template.TemplateScalarModel

public final class BooleanScalar

extends java.lang.Object

implements freemarker.template.TemplateScalarModel

Provides singleton template models for representing boolean values.

Version:

1.0

Author:

Attila Szegedi, attila@szegedi.org

Field Summary

static BooleanScalar	FALSE TemplateScalarModel for representing boolean false value
static BooleanScalar	TRUE TemplateScalarModel for representing boolean true value

Method Summary

java.lang.String	getAsString() "true" for the TRUE singleton, "false" for the FALSE singleton.
static boolean	getBoolean(java.lang.Object value) Returns true if the passed object is the TRUE singleton.
static java.lang.Boolean	getBooleanObject(java.lang.Object value) Returns Boolean.TRUE if the passed object is the TRUE singleton, otherwise returns Boolean.FALSE.
static BooleanScalar	getScalar(boolean value) Returns the boolean singleton TemplateScalarModel appropriate for representing the specified boolean value.
static BooleanScalar	getScalar(java.lang.Boolean value) Returns the boolean singleton TemplateScalarModel appropriate for representing the specified boolean value.
boolean	isEmpty() Returns true if this is the FALSE object.

Methods inherited from class java.lang.Object

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

Field Detail

TRUE

public static final BooleanScalar TRUE

TemplateScalarModel for representing boolean true value

FALSE

public static final BooleanScalar FALSE

TemplateScalarModel for representing boolean false value

Method Detail

getScalar

public static final BooleanScalar getScalar(boolean value)

Returns the boolean singleton TemplateScalarModel appropriate for representing the specified boolean value.

getScalar

public static final BooleanScalar getScalar(java.lang.Boolean value)

Returns the boolean singleton TemplateScalarModel appropriate for representing the specified boolean value.

getBoolean

public static final boolean getBoolean(java.lang.Object value)

Returns true if the passed object is the TRUE singleton.

getBooleanObject

public static final java.lang.Boolean getBooleanObject(java.lang.Object value)

Returns Boolean.TRUE if the passed object is the TRUE singleton, otherwise returns Boolean.FALSE.

getAsString

public java.lang.String getAsString()

"true" for the TRUE singleton, "false" for the FALSE singleton.

Specified by:

getAsString in interface freemarker.template.TemplateScalarModel

isEmpty

public boolean isEmpty()

Returns true if this is the FALSE object. As the Expression.isTrue() returns true if the model is !isEmpty(), this allows for usual semantics of booleans (you can write <if cond> instead of <if cond == "true">).

Specified by:

isEmpty in interface freemarker.template.TemplateModel