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java.lang.Objectgroovy.lang.GroovyObjectSupport
org.codehaus.groovy.runtime.NullObject
public class NullObject
| Method Summary | |
|---|---|
Object |
asType(Class c)
Type conversion method for null. |
Object |
clone()
Since this is implemented as a singleton, we should avoid the use of the clone method |
boolean |
equals(Object to)
null is only equal to null |
static NullObject |
getNullObject()
get the NullObject reference |
Object |
getProperty(String property)
Tries to get a property on null, which will always fail |
int |
hashCode()
|
Object |
invokeMethod(String name,
Object args)
Tries to invoke a method on null, which will always fail |
boolean |
is(Object other)
The method "is" is used to test for equal references. |
Iterator |
iterator()
iterator() method to be able to iterate on null. |
Object |
plus(String s)
Allows to add a String to null. |
void |
setProperty(String property,
Object newValue)
Tries to set a property on null, which will always fail |
String |
toString()
|
| Methods inherited from class groovy.lang.GroovyObjectSupport |
|---|
getMetaClass, setMetaClass |
| Methods inherited from class java.lang.Object |
|---|
finalize, getClass, notify, notifyAll, wait, wait, wait |
| Method Detail |
|---|
public static NullObject getNullObject()
public Object clone()
clone in class Objectpublic Object getProperty(String property)
getProperty in interface GroovyObjectgetProperty in class GroovyObjectSupportproperty - - the property to get
public void setProperty(String property,
Object newValue)
setProperty in interface GroovyObjectsetProperty in class GroovyObjectSupportproperty - - the proprty to setnewValue - - the new value of the property
public Object invokeMethod(String name,
Object args)
invokeMethod in interface GroovyObjectinvokeMethod in class GroovyObjectSupportname - the name of the method to invokeargs - - arguments to the method
public boolean equals(Object to)
equals in class Objectto - - the reference object with which to compare
public Iterator iterator()
public Object plus(String s)
s - - the String to concatenate
public boolean is(Object other)
other - - the object to test
public Object asType(Class c)
c - - the class to convert to
public String toString()
toString in class Objectpublic int hashCode()
hashCode in class Object
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