2 files changed, 123 insertions, 0 deletions
diff --git a/src/eu/equalparts/cardbase/cardstorage/ReferenceCardContainer.java b/src/eu/equalparts/cardbase/cardstorage/ReferenceCardContainer.java
new file mode 100644
index 0000000..ccd5508
--- /dev/null
+++ b/src/eu/equalparts/cardbase/cardstorage/ReferenceCardContainer.java
@@ -0,0 +1,50 @@
+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;
+
+public abstract class ReferenceCardContainer {
+	
+	@JsonProperty private Map<Integer, Integer> cardReferences;
+	
+	public ReferenceCardContainer() {
+		cardReferences = new HashMap<>();
+	}
+
+	public int getCount(Card cardToCount) {
+		int hashCode = cardToCount.hashCode();
+		return cardReferences.containsKey(hashCode) ? cardReferences.get(hashCode) : 0;
+	}
+	
+	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 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;
+	}
+}
diff --git a/src/eu/equalparts/cardbase/cardstorage/StandaloneCardContainer.java b/src/eu/equalparts/cardbase/cardstorage/StandaloneCardContainer.java
new file mode 100644
index 0000000..52fc89e
--- /dev/null
+++ b/src/eu/equalparts/cardbase/cardstorage/StandaloneCardContainer.java
@@ -0,0 +1,73 @@
+package eu.equalparts.cardbase.cardstorage;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import eu.equalparts.cardbase.cards.Card;
+import eu.equalparts.cardbase.comparator.CardComparator;
+
+public abstract class StandaloneCardContainer extends ReferenceCardContainer {
+	
+	@JsonProperty private Map<Integer, Card> cardData;
+	
+	public StandaloneCardContainer() {
+		super();
+		cardData = new HashMap<>();
+	}
+	
+	@Override
+	public void addCard(Card cardToAdd, int count) {
+		super.addCard(cardToAdd, count);
+		cardData.putIfAbsent(cardToAdd.hashCode(), cardToAdd);
+	}
+
+	@Override
+	public int removeCard(Card cardToRemove, int count) {
+		int removed = super.removeCard(cardToRemove, count);
+		if (getCount(cardToRemove) <= 0) {
+			cardData.remove(cardToRemove.hashCode());
+		}
+		return removed;
+	}
+	
+	/**
+	 * Returns a card from the cardbase by set code and number.
+	 * If no such card is in the cardbase, returns null.
+	 * 
+	 * @param setCode the set to which the requested card belongs.
+	 * @param number the requested card's set number.
+	 * @return the requested {@code Card} or null if no card is found.
+	 */
+	public Card getCard(String setCode, String number) {
+		return cardData.get(Card.makeHash(setCode, number));
+	}
+	
+	/**
+	 * This method is intended to allow iteration directly on the list of cards,
+	 * while at the same time retaining control over the insert and remove procedures.
+	 * The returned {@code List} is a read-only; trying to modify its structure will
+	 * result in an {@code UnsupportedOperationException}.
+	 * 
+	 * @return an unmodifiable list of all the cards in the cardbase.
+	 */
+	public Collection<Card> getCards() {
+		return Collections.unmodifiableCollection(cardData.values());
+	}
+	
+	/**
+	 * @param fieldName the name of the field by which to sort.
+	 * @return an unmodifiable collection representing the cardbase sorted in the required order.
+	 * @throws NoSuchFieldException if the field provided is invalid.
+	 */
+	public Collection<Card> sortByField(String fieldName) throws NoSuchFieldException {
+		List<Card> sortedCards = new ArrayList<Card>(getCards());
+		sortedCards.sort(new CardComparator(Card.class.getDeclaredField(fieldName)));
+		return Collections.unmodifiableCollection(sortedCards);
+	}
+}