62 lines
1.8 KiB
Java
62 lines
1.8 KiB
Java
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//: com/mindviewinc/util/MapData.java
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// <20>2015 MindView LLC: see Copyright.txt
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// A Map filled with data using a generator object.
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package com.mindviewinc.util;
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import java.util.*;
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public class MapData<K,V> extends LinkedHashMap<K,V> {
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// A single Pair Generator:
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public MapData(Generator<Pair<K,V>> gen, int quantity) {
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for(int i = 0; i < quantity; i++) {
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Pair<K,V> p = gen.next();
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put(p.key, p.value);
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}
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}
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// Two separate Generators:
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public MapData(Generator<K> genK, Generator<V> genV,
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int quantity) {
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for(int i = 0; i < quantity; i++) {
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put(genK.next(), genV.next());
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}
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}
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// A key Generator and a single value:
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public MapData(Generator<K> genK, V value, int quantity){
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for(int i = 0; i < quantity; i++) {
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put(genK.next(), value);
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}
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}
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// An Iterable and a value Generator:
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public MapData(Iterable<K> genK, Generator<V> genV) {
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for(K key : genK) {
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put(key, genV.next());
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}
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}
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// An Iterable and a single value:
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public MapData(Iterable<K> genK, V value) {
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for(K key : genK) {
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put(key, value);
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}
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}
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// Generic convenience methods:
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public static <K,V> MapData<K,V>
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map(Generator<Pair<K,V>> gen, int quantity) {
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return new MapData<>(gen, quantity);
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}
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public static <K,V> MapData<K,V>
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map(Generator<K> genK, Generator<V> genV, int quantity) {
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return new MapData<>(genK, genV, quantity);
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}
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public static <K,V> MapData<K,V>
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map(Generator<K> genK, V value, int quantity) {
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return new MapData<>(genK, value, quantity);
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}
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public static <K,V> MapData<K,V>
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map(Iterable<K> genK, Generator<V> genV) {
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return new MapData<>(genK, genV);
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}
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public static <K,V> MapData<K,V>
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map(Iterable<K> genK, V value) {
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return new MapData<>(genK, value);
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}
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} ///:~
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