/**
* adds a new search strategy with a certain weight.
*
* @param strategy strategy to be added
* @param weight of corresponding strategy to be added
* @throws java.lang.IllegalStateException if strategy is null OR weight < 0
*/
public void addStrategy(SearchStrategy strategy, double weight) {
if (strategy == null) {
throw new IllegalStateException("strategy is null. make sure adding a valid strategy.");
}
if (id2index.keySet().contains(strategy.getId())) {
throw new IllegalStateException(
"strategyId "
+ strategy.getId()
+ " already in use. replace strateId in your config file or code with a unique strategy id");
}
if (weight < 0.0) {
throw new IllegalStateException("weight is lower than zero.");
}
id2index.put(strategy.getId(), strategyIndex);
strategyIndex++;
strategies.add(strategy);
weights.add(weight);
sumWeights += weight;
}
public void addSearchStrategyModuleListener(SearchStrategyModuleListener moduleListener) {
for (SearchStrategy s : strategies) {
s.addModuleListener(moduleListener);
}
}