@Test
public void iterateOverMapEntries() {
HazelcastClient hClient = getHazelcastClient();
IMap<String, String> map = hClient.getMap("iterateOverMapEntries");
map.put("1", "A");
map.put("2", "B");
map.put("3", "C");
Set<Entry<String, String>> entrySet = map.entrySet();
assertEquals(3, entrySet.size());
Set<String> keySet = map.keySet();
for (Entry<String, String> entry : entrySet) {
assertTrue(keySet.contains(entry.getKey()));
assertEquals(entry.getValue(), map.get(entry.getKey()));
}
Iterator<Entry<String, String>> it = entrySet.iterator();
for (String key : keySet) {
MapEntry mapEntry = map.getMapEntry(key);
assertEquals(1, mapEntry.getHits());
}
while (it.hasNext()) {
it.next();
it.remove();
}
assertTrue(map.isEmpty());
}
public V put(K key, V value) {
V oldValue = null;
int index = Math.abs(key.hashCode()) % SIZE;
if (buckets[index] == null) buckets[index] = new ArrayList<MapEntry<K, V>>();
ArrayList<MapEntry<K, V>> bucket = buckets[index];
MapEntry<K, V> pair = new MapEntry<K, V>(key, value);
boolean found = false;
ListIterator<MapEntry<K, V>> it = bucket.listIterator();
// int probes=0;
while (it.hasNext()) {
// probes++;
MapEntry<K, V> iPair = it.next();
// if(!iPair.getKey().equals(key)) System.out.println("HashCode collision on put, have
// key:"+key+" hascode:"+key.hashCode()+" found key:"+iPair.getKey()+" hashcode:"+
// iPair.getKey().hashCode());
if (iPair.getKey().equals(key)) {
oldValue = iPair.getValue();
it.set(pair); // Replace old with new
found = true;
break;
}
}
// System.out.println("put() probes for key "+ key+" :"+probes);
if (!found) buckets[index].add(pair);
return oldValue;
}
@Override
public V remove(Object key) {
int index = Math.abs(key.hashCode()) % SIZE;
if (buckets[index] == null) return null;
for (MapEntry<K, V> iPair : buckets[index]) {
if (iPair.getKey().equals(key)) {
buckets[index].remove(iPair);
return iPair.getValue();
}
}
return null;
}
public V get(Object key) {
int index = Math.abs(key.hashCode()) % SIZE;
if (buckets[index] == null) return null;
// int probes=0;
for (MapEntry<K, V> iPair : buckets[index]) {
// probes++;
// if(!iPair.getKey().equals(key)) System.out.println("HashCode collision on put, have
// key:"+key+" hascode:"+key.hashCode()+" foune key:"+iPair.getKey()+" hashcode:"+
// iPair.getKey().hashCode());
if (iPair.getKey().equals(key)) return iPair.getValue();
}
// System.out.println("get() probes for key "+ key+" :"+probes);
return null;
}
@Test
public void getMapEntry() {
HazelcastClient hClient = getHazelcastClient();
IMap map = hClient.getMap("getMapEntry");
assertNull(map.put("a", "b"));
map.get("a");
map.get("a");
MapEntry<String, String> entry = map.getMapEntry("a");
assertEquals("a", entry.getKey());
assertEquals("b", entry.getValue());
assertEquals(2, entry.getHits());
assertEquals("b", entry.getValue());
assertEquals("b", entry.setValue("c"));
assertEquals("c", map.get("a"));
assertEquals("c", entry.getValue());
}
