Negotiation-based service configuration - Software Development Case Studies in Java - page 564

pref.add(attribute.getName(),values[j],rankValue);
}
}
// the weight of each attribute is proportional to the
// variance of the availability of the values of each
// attribute i.e. higher weight to attributes that have
// scarcely available values
it_attr # specification.attributes().iterator();
for ( int i # 0; it_attr.hasNext(); !! i)
{ // for each attribute
AttributeSpec attribute #
(AttributeSpec)it_attr.next();
pref.setWeight(attribute.getName(),sigma[i]/sumSigma);
}
return pref;
}
// evaluates the validity of a proposal
public boolean valid(Proposal proposal){
if (proposal ## null ) return false ;
Map coordinates # new Hashtable();
Iterator it # proposal.getAttributes().iterator();
while (it.hasNext()){
Attribute attribute # (Attribute)it.next();
coordinates.put(attribute.getName(),
attribute.getValue());
}
return valid(coordinates);
}
public boolean valid(Map coordinates){
Iterator it # resources.iterator();
while (it.hasNext()){
Resource resource # (Resource)it.next();
if (resource.match(coordinates)
&& resource.available>0) return true ;
}
return false ;
}
// return the number of available resources
private int sumAvailable(){
Iterator it # resources.iterator();
int sum # 0;
while (it.hasNext()){
Resource resource # (Resource)it.next();
sum !# resource.available;
}
return sum;
}