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-rw-r--r--src/datastructures/linkedlists/Association.java76
1 files changed, 76 insertions, 0 deletions
diff --git a/src/datastructures/linkedlists/Association.java b/src/datastructures/linkedlists/Association.java
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+++ b/src/datastructures/linkedlists/Association.java
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+/**
+ * Copyright © 2014 Mattias Andrée (maandree@member.fsf.org)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package datastructures.linkedlists;
+
+
+/**
+ * Value type that can be stored in linked lists
+ * to turn them in to association lists.
+ *
+ * @param <K> The type of the key of the node
+ * @param <V> The type of the value associated with the key
+ */
+public class Association<K, V>
+{
+ /**
+ * Constructor
+ *
+ * @param key The key of the node
+ * @param value The value associated with the key
+ */
+ public Association(K key, V value)
+ {
+ this.key = key;
+ this.value = value;
+ }
+
+
+
+ /**
+ * The key of the node
+ */
+ public K key;
+
+ /**
+ * The value associated with the key
+ */
+ public V value;
+
+
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public boolean equals(Object other)
+ {
+ if ((this.key == null) || (other == null))
+ return (this.key == null) && (other == null);
+ return this.key.equals(other);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public int hashCode()
+ {
+ return this.key.hashCode();
+ }
+
+}
+