1 /*******************************************************************************
\r
2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
\r
3 * in Industry THTH ry.
\r
4 * All rights reserved. This program and the accompanying materials
\r
5 * are made available under the terms of the Eclipse Public License v1.0
\r
6 * which accompanies this distribution, and is available at
\r
7 * http://www.eclipse.org/legal/epl-v10.html
\r
10 * VTT Technical Research Centre of Finland - initial API and implementation
\r
11 *******************************************************************************/
\r
12 package org.simantics.utils.datastructures.map;
\r
14 import java.io.Externalizable;
\r
15 import java.io.IOException;
\r
16 import java.io.ObjectInput;
\r
17 import java.io.ObjectOutput;
\r
18 import java.io.Serializable;
\r
19 import java.util.Arrays;
\r
22 * n-tuple (all fields are set) or n-tuple query (some fields possibly null)
\r
24 * @author Toni Kalajainen <toni.kalajainen@vtt.fi>
\r
26 public class Tuple implements Serializable, Externalizable {
\r
29 private int hashCode;
\r
34 public Tuple(Object ... fields)
\r
36 this.fields = fields;
\r
37 hashCode = Arrays.hashCode(fields);
\r
39 for (Object o : fields) {
\r
40 if (o!=null) associativity |= mask;
\r
46 public int hashCode() {
\r
51 public boolean equals(Object obj) {
\r
52 if (obj == null) return false;
\r
53 if (!(obj.getClass().equals(this.getClass()))) return false;
\r
54 Tuple other = (Tuple) obj;
\r
55 return Arrays.deepEquals(fields, other.fields);
\r
59 public String toString() {
\r
60 return Arrays.toString(fields);
\r
63 public Object getField(int index)
\r
65 return fields[index];
\r
68 public Object tryGetField(int index)
\r
70 return index >= 0 && index < fields.length ? fields[index] : null;
\r
73 @SuppressWarnings("unchecked")
\r
74 public <T> T getTypedField(int index)
\r
76 return (T) fields[index];
\r
79 @SuppressWarnings("unchecked")
\r
80 public <T> T tryGetTypedField(int index)
\r
82 return index >= 0 && index < fields.length ? (T) fields[index] : null;
\r
85 public Object[] getFields()
\r
90 public int getLevel()
\r
92 return fields.length;
\r
95 public int getAssociativity()
\r
97 return associativity;
\r
101 * Tuple is full if all fields are set (not null)
\r
102 * @return <code>true</code> if all fields are set
\r
104 public boolean isFull()
\r
106 return associativity == (1 << fields.length)-1;
\r
110 public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
\r
111 int count = in.readInt();
\r
112 fields = new Object[count];
\r
113 for (int i=0; i<count; i++)
\r
114 fields[i] = in.readObject();
\r
115 hashCode = Arrays.hashCode(fields);
\r
119 public void writeExternal(ObjectOutput out) throws IOException {
\r
120 out.writeInt(fields.length);
\r
121 for (Object o : fields)
\r
122 out.writeObject(o);
\r