railo.runtime.type
Class Null

java.lang.Object
  extended by railo.runtime.type.Null
All Implemented Interfaces:
Serializable, Dumpable, Castable

public final class Null
extends Object
implements Castable, Dumpable

Custom Null Type

See Also:
Serialized Form

Method Summary
 Boolean castToBoolean(Boolean defaultValue)
          cast the castable value to a boolean value
 boolean castToBooleanValue()
          cast the castable value to a boolean value
 DateTime castToDateTime()
          cast the castable value to a date time object
 DateTime castToDateTime(DateTime defaultValue)
          cast the castable value to a date time object
 double castToDoubleValue()
          cast the castable value to a double value
 double castToDoubleValue(double defaultValue)
          cast the castable value to a double value
 String castToString()
          cast the castable value to a string, other than the Method toString, this Method can throw a Exception
 String castToString(String defaultValue)
          cast the castable value to a string, return the default value, when the method is not castable
 int compareTo(boolean b)
           
 int compareTo(DateTime dt)
           
 int compareTo(double d)
           
 int compareTo(String str)
           
static Null getInstance()
           
 DumpData toDumpData(PageContext pageContext, int maxlevel, DumpProperties dp)
          method to print out information to a object as HTML
 String toString()
           
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Method Detail

getInstance

public static Null getInstance()
Returns:
returns custom null Type

castToString

public String castToString()
                    throws ExpressionException
Description copied from interface: Castable
cast the castable value to a string, other than the Method toString, this Method can throw a Exception

Specified by:
castToString in interface Castable
Returns:
String representation of the Object
Throws:
ExpressionException
See Also:
Castable.castToString()

castToString

public String castToString(String defaultValue)
Description copied from interface: Castable
cast the castable value to a string, return the default value, when the method is not castable

Specified by:
castToString in interface Castable
Returns:
String representation of the Object
See Also:
Castable.castToString(java.lang.String)

castToBooleanValue

public boolean castToBooleanValue()
                           throws ExpressionException
Description copied from interface: Castable
cast the castable value to a boolean value

Specified by:
castToBooleanValue in interface Castable
Returns:
boolean Value representation of the Object
Throws:
ExpressionException
See Also:
Castable.castToBooleanValue()

castToBoolean

public Boolean castToBoolean(Boolean defaultValue)
Description copied from interface: Castable
cast the castable value to a boolean value

Specified by:
castToBoolean in interface Castable
Returns:
boolean Value representation of the Object
See Also:
Castable.castToBoolean(java.lang.Boolean)

castToDoubleValue

public double castToDoubleValue()
                         throws ExpressionException
Description copied from interface: Castable
cast the castable value to a double value

Specified by:
castToDoubleValue in interface Castable
Returns:
double Value representation of the Object
Throws:
ExpressionException
See Also:
Castable.castToDoubleValue()

castToDoubleValue

public double castToDoubleValue(double defaultValue)
Description copied from interface: Castable
cast the castable value to a double value

Specified by:
castToDoubleValue in interface Castable
Returns:
double Value representation of the Object
See Also:
Castable.castToDoubleValue(double)

castToDateTime

public DateTime castToDateTime()
                        throws ExpressionException
Description copied from interface: Castable
cast the castable value to a date time object

Specified by:
castToDateTime in interface Castable
Returns:
date time representation of the Object
Throws:
ExpressionException
See Also:
Castable.castToDateTime()

castToDateTime

public DateTime castToDateTime(DateTime defaultValue)
Description copied from interface: Castable
cast the castable value to a date time object

Specified by:
castToDateTime in interface Castable
Parameters:
defaultValue - returned when it is not possible to cast to a dateTime object
Returns:
date time representation of the Object
See Also:
Castable.castToDateTime(railo.runtime.type.dt.DateTime)

toDumpData

public DumpData toDumpData(PageContext pageContext,
                           int maxlevel,
                           DumpProperties dp)
Description copied from interface: Dumpable
method to print out information to a object as HTML

Specified by:
toDumpData in interface Dumpable
Returns:
HTML print out
See Also:
railo.runtime.dump.Dumpable#toDumpData(railo.runtime.PageContext, int)

toString

public String toString()
Overrides:
toString in class Object
See Also:
Object.toString()

compareTo

public int compareTo(String str)
              throws PageException
Specified by:
compareTo in interface Castable
Throws:
PageException

compareTo

public int compareTo(boolean b)
              throws PageException
Specified by:
compareTo in interface Castable
Throws:
PageException

compareTo

public int compareTo(double d)
              throws PageException
Specified by:
compareTo in interface Castable
Throws:
PageException

compareTo

public int compareTo(DateTime dt)
              throws PageException
Specified by:
compareTo in interface Castable
Throws:
PageException


Copyright © 2012 Railo