1 files changed, 5 insertions, 43 deletions
diff --git a/src/eu/equalparts/cardbase/cardstorage/ReferenceCardContainer.java b/src/eu/equalparts/cardbase/cardstorage/ReferenceCardContainer.java
index f265d24..284fc89 100644
--- a/src/eu/equalparts/cardbase/cardstorage/ReferenceCardContainer.java
+++ b/src/eu/equalparts/cardbase/cardstorage/ReferenceCardContainer.java
@@ -1,10 +1,5 @@
 package eu.equalparts.cardbase.cardstorage;
 
-import java.util.HashMap;
-import java.util.Map;
-
-import com.fasterxml.jackson.annotation.JsonProperty;
-
 import eu.equalparts.cardbase.cards.Card;
 
 /**
@@ -13,58 +8,25 @@ import eu.equalparts.cardbase.cards.Card;
  * @author Eduardo Pedroni
  *
  */
-public abstract class ReferenceCardContainer {
-	
-	/**
-	 * A map with card hashes as entry keys (calculated used {@code Card.hashCode()}) and card amounts as entry values.
-	 */
-	@JsonProperty private Map<Integer, Integer> cardReferences = new HashMap<>();
-
+public interface ReferenceCardContainer {
 	/**
 	 * Returns the amount of the specified card. If the card is not present at all, return 0.
 	 * 
 	 * @param cardToCount a card whose count is to be returned.
 	 * @return the count of the returned card in the container.
 	 */
-	public int getCount(Card cardToCount) {
-		int hashCode = cardToCount.hashCode();
-		return cardReferences.containsKey(hashCode) ? cardReferences.get(hashCode) : 0;
-	}
+	public int getCount(Card cardToCount);
 	
 	/**
 	 * @param cardToAdd the card to add the container.
 	 * @param count the amount to add.
 	 */
-	public void addCard(Card cardToAdd, int count) {
-		int hashCode = cardToAdd.hashCode();
-		if (cardReferences.containsKey(hashCode)) {
-			cardReferences.replace(hashCode, cardReferences.get(hashCode) + count);
-		} else {
-			cardReferences.put(hashCode, count);
-		}
-	}
-
+	public void addCard(Card cardToAdd, int count);
+	
 	/**
 	 * @param cardToRemove the card to remove from the container.
 	 * @param count the amount to remove.
 	 * @return the amount that was effectively removed. Could be less than {@code count} depending on how many of the card were present.
 	 */
-	public int removeCard(Card cardToRemove, int count) {
-		int hashCode = cardToRemove.hashCode();
-		int removed = 0;
-		
-		if (cardReferences.containsKey(hashCode) && count > 0) {
-			int oldCount = cardReferences.get(hashCode);
-			
-			if (oldCount > count) {
-				cardReferences.replace(hashCode, oldCount - count);
-				removed = count;
-			} else {
-				cardReferences.remove(hashCode);
-				removed = oldCount;
-			}
-		}
-		
-		return removed;
-	}
+	public int removeCard(Card cardToRemove, int count);
 }