-/*******************************************************************************\r
- * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
- * in Industry THTH ry.\r
- * All rights reserved. This program and the accompanying materials\r
- * are made available under the terms of the Eclipse Public License v1.0\r
- * which accompanies this distribution, and is available at\r
- * http://www.eclipse.org/legal/epl-v10.html\r
- *\r
- * Contributors:\r
- * VTT Technical Research Centre of Finland - initial API and implementation\r
- *******************************************************************************/\r
-package org.simantics.utils.datastructures;\r
-\r
-/**\r
- * A generic Quad (4-tuple) structure for containing four object instances of\r
- * chosen types.\r
- * \r
- * @param <T1> type of first element\r
- * @param <T2> type of second element\r
- * @param <T3> type of third element\r
- * @param <T4> type of fourth element\r
- */\r
-public final class Quad<T1, T2, T3, T4> {\r
- public final T1 first;\r
- public final T2 second;\r
- public final T3 third;\r
- public final T4 fourth;\r
- private final int hash;\r
-\r
- public static <T1, T2, T3, T4> Quad<T1, T2, T3, T4> make(T1 t1, T2 t2, T3 t3, T4 t4) {\r
- return new Quad<T1, T2, T3, T4>(t1, t2, t3, t4);\r
- }\r
-\r
- public Quad(T1 first, T2 second, T3 third, T4 fourth) {\r
- this.first = first;\r
- this.second = second;\r
- this.third = third;\r
- this.fourth = fourth;\r
- this.hash = makeHash();\r
- }\r
- \r
- @Override\r
- public boolean equals(Object obj) {\r
- if (obj == null)\r
- return false;\r
- if (!(obj.getClass().equals(this.getClass())))\r
- return false;\r
- Quad<?, ?, ?, ?> other = (Quad<?, ?, ?, ?>) obj;\r
- if (other.first != first && (other.first == null || !other.first.equals(first)))\r
- return false;\r
- if (other.second != second && (other.second == null || !other.second.equals(second)))\r
- return false;\r
- if (other.third != third && (other.third == null || !other.third.equals(third)))\r
- return false;\r
- if (other.fourth != fourth && (other.fourth == null || !other.fourth.equals(fourth)))\r
- return false;\r
- return true;\r
- }\r
- \r
- @Override\r
- public int hashCode() {\r
- return hash;\r
- }\r
- \r
- @Override\r
- public String toString() {\r
- return "<"+first+", "+second+", "+third+", "+fourth+">";\r
- }\r
- \r
- private int makeHash() {\r
- return (first == null ? 0 : first.hashCode()) + (second == null ? 0 : second.hashCode())*31 + (third == null ? 0 : third.hashCode())*41+ (fourth == null ? 0 : fourth.hashCode())*71;\r
- }\r
-}\r
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.utils.datastructures;
+
+/**
+ * A generic Quad (4-tuple) structure for containing four object instances of
+ * chosen types.
+ *
+ * @param <T1> type of first element
+ * @param <T2> type of second element
+ * @param <T3> type of third element
+ * @param <T4> type of fourth element
+ */
+public final class Quad<T1, T2, T3, T4> {
+ public final T1 first;
+ public final T2 second;
+ public final T3 third;
+ public final T4 fourth;
+ private final int hash;
+
+ public static <T1, T2, T3, T4> Quad<T1, T2, T3, T4> make(T1 t1, T2 t2, T3 t3, T4 t4) {
+ return new Quad<T1, T2, T3, T4>(t1, t2, t3, t4);
+ }
+
+ public Quad(T1 first, T2 second, T3 third, T4 fourth) {
+ this.first = first;
+ this.second = second;
+ this.third = third;
+ this.fourth = fourth;
+ this.hash = makeHash();
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (obj == null)
+ return false;
+ if (!(obj.getClass().equals(this.getClass())))
+ return false;
+ Quad<?, ?, ?, ?> other = (Quad<?, ?, ?, ?>) obj;
+ if (other.first != first && (other.first == null || !other.first.equals(first)))
+ return false;
+ if (other.second != second && (other.second == null || !other.second.equals(second)))
+ return false;
+ if (other.third != third && (other.third == null || !other.third.equals(third)))
+ return false;
+ if (other.fourth != fourth && (other.fourth == null || !other.fourth.equals(fourth)))
+ return false;
+ return true;
+ }
+
+ @Override
+ public int hashCode() {
+ return hash;
+ }
+
+ @Override
+ public String toString() {
+ return "<"+first+", "+second+", "+third+", "+fourth+">";
+ }
+
+ private int makeHash() {
+ return (first == null ? 0 : first.hashCode()) + (second == null ? 0 : second.hashCode())*31 + (third == null ? 0 : third.hashCode())*41+ (fourth == null ? 0 : fourth.hashCode())*71;
+ }
+}