PlantRegistry.java

/*
 */
package com.infinityraider.agricraft.apiimpl;

import com.infinityraider.agricraft.api.plant.IAgriPlant;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import com.infinityraider.agricraft.api.plant.IAgriPlantRegistry;
import java.util.Collection;
import java.util.Collections;
import java.util.Set;

/**
 *
 * 
 */
public class PlantRegistry implements IAgriPlantRegistry {
	
	private static final IAgriPlantRegistry INSTANCE = new PlantRegistry();
	
	private final ConcurrentMap<String, IAgriPlant> plants;

	public PlantRegistry() {
		this.plants = new ConcurrentHashMap<>();
	}
	
	public static IAgriPlantRegistry getInstance() {
		return INSTANCE;
	}

	@Override
	public boolean isPlant(IAgriPlant plant) {
		return this.plants.containsKey(plant.getId());
	}

	@Override
	public IAgriPlant getPlant(String id) {
		return this.plants.get(id);
	}

	@Override
	public boolean addPlant(IAgriPlant plant) {
		return this.plants.putIfAbsent(plant.getId(), plant) == null;
	}

	@Override
	public boolean removePlant(IAgriPlant plant) {
		return this.plants.remove(plant.getId()) != null;
	}

	@Override
	public Collection<IAgriPlant> getPlants() {
        return Collections.unmodifiableCollection(this.plants.values());
	}

	@Override
	public Set<String> getPlantIds() {
        return Collections.unmodifiableSet(this.plants.keySet());
	}
	
}