1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 | package Torello.Java.Additional; import java.lang.reflect.Field; /** * This simple generic-class allows for storing <B STYLE='color:red'>three</B> objects with a * single reference. * * <EMBED CLASS=globalDefs DATA-KIND=Tuple DATA-N=3> * <EMBED CLASS='external-html' DATA-FILE-ID=MUTABLE_TUPLE> * @param <A> The type of the <B STYLE='color:red'>first</B> member-field ('{@link #a}'). * @param <B> The type of the <B STYLE='color:red'>second</B> member-field ('{@link #b}'). * @param <C> The type of the <B STYLE='color:red'>third</B> member-field ('{@link #c}'). */ public class Tuple3<A, B, C> extends TupleN implements java.io.Serializable, Cloneable { /** <EMBED CLASS='external-html' DATA-FILE-ID=SVUID> */ protected static final long serialVersionUID = 1; /** This holds a pointer the first field / instance. */ public A a; /** This holds a pointer to the second field / instance. */ public B b; /** This holds a pointer to the third field / instance. */ public C c; /** Constructs this object */ public Tuple3(A a, B b, C c) { this.a = a; this.b = b; this.c = c; } /** Constructs this object. Initializes all fields to null. */ public Tuple3() { this.a = null; this.b = null; this.c = null; } /** * Returns {@code '3'}, indicating how many fields are declared by this class. * @return As an instance of {@code Tuple3}, this method returns {@code '3'}; */ public int n() { return 3; } // Super-class uses this for toString, equals, and hashCode // There is an optimization, so if this is requested multiple times, it is saved in a // transient field. final Object[] asArrayInternal() { return new Object[] { a, b, c }; } public Tuple3<A, B, C> clone() { return new Tuple3<>(this.a, this.b, this.c); } /** * <EMBED CLASS=defs DATA-TEXT="Integer, Date"> * <EMBED CLASS='external-html' DATA-FILE-ID=MULTI_TYPE_EX_COMMON> * <EMBED CLASS='external-html' DATA-FILE-ID=MULTI_TYPE_GET_EXAMPLE> */ public Object get(final int i) { // Throws Exception if i not in [1..3] CHECK_GET(i); return (i <= 2) ? ((i == 1) ? a : b) : c; } public Ret3<A, B, C> toImmutable() { return new Ret3<>(this.a, this.b, this.c); } } |