[Indigosim-developer] using getClass().equals

[Reuben G. <reu...@ay...>]

Hey Guys,

I noticed in a couple of places in the code we are using
public void getObjectsOfType(Class c) {
if (o.getClass().equals(c))
      add(o);
.
.
.}

When we want objects of a certain type, 90% of the time, we mean any  
objects of a certain type and all of it's subtypes. So, for example,  
if we have a list of Objects and we want to get all the Agents from  
it, we want to get all the InfoAgents, SpecialAgents, BubbleAgents,  
etc...

The correct code is the following:
public void getObjectsOfType(Class c) {
if (c.isAssignableFrom(o.getClass()))
     add(o);
.
.
.}

someClass.isAssignableFrom(anotherClass) is like saying  
someClass.isSuperClassOf(anotherclass)

-Reuben


--
Reuben Grinberg
reu...@ay...
(609)233-9891

"We'll be saying a big hello to all intelligent lifeforms  
everywhere... and to everyone else out there, the secret is to bang  
the rocks together, guys!"
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