@Test
public void testBulkComputeStoreRemovesValueWhenFunctionReturnsNullMappings() throws Exception {
Store.Configuration<Number, CharSequence> configuration = mockStoreConfig();
OnHeapStore<Number, CharSequence> store =
new OnHeapStore<Number, CharSequence>(configuration, SystemTimeSource.INSTANCE, false);
store.put(1, "one");
store.put(2, "two");
store.put(3, "three");
Map<Number, Store.ValueHolder<CharSequence>> result =
store.bulkCompute(
Arrays.asList(2, 1, 5),
new Function<
Iterable<? extends Map.Entry<? extends Number, ? extends CharSequence>>,
Iterable<? extends Map.Entry<? extends Number, ? extends CharSequence>>>() {
@Override
public Iterable<? extends Map.Entry<? extends Number, ? extends CharSequence>> apply(
Iterable<? extends Map.Entry<? extends Number, ? extends CharSequence>> entries) {
Map<Number, CharSequence> newValues = new HashMap<Number, CharSequence>();
for (Map.Entry<? extends Number, ? extends CharSequence> entry : entries) {
newValues.put(entry.getKey(), null);
}
return newValues.entrySet();
}
});
assertThat(result.size(), is(3));
assertThat(store.get(1), is(nullValue()));
assertThat(store.get(2), is(nullValue()));
assertThat(store.get(3).value(), Matchers.<CharSequence>equalTo("three"));
assertThat(store.get(5), is(nullValue()));
}
@Test
public void testPutAndGet() throws CacheAccessException {
store.put(KEY, VALUE);
Store.ValueHolder<Value> firstStoreValue = store.get(KEY);
Store.ValueHolder<Value> secondStoreValue = store.get(KEY);
compareValues(VALUE, firstStoreValue.value());
compareValues(VALUE, secondStoreValue.value());
compareReadValues(firstStoreValue.value(), secondStoreValue.value());
}
@Test
public void testBulkComputeIfAbsentFunctionDoesNotGetPresentKeys() throws Exception {
Store.Configuration<Number, CharSequence> configuration = mockStoreConfig();
OnHeapStore<Number, CharSequence> store =
new OnHeapStore<Number, CharSequence>(configuration, SystemTimeSource.INSTANCE, false);
store.put(1, "one");
store.put(2, "two");
store.put(3, "three");
Map<Number, Store.ValueHolder<CharSequence>> result =
store.bulkComputeIfAbsent(
Arrays.asList(1, 2, 3, 4, 5, 6),
new Function<
Iterable<? extends Number>,
Iterable<? extends Map.Entry<? extends Number, ? extends CharSequence>>>() {
@Override
public Iterable<? extends Map.Entry<? extends Number, ? extends CharSequence>> apply(
Iterable<? extends Number> keys) {
Map<Number, CharSequence> result = new HashMap<Number, CharSequence>();
for (Number key : keys) {
if (key.equals(1)) {
fail();
} else if (key.equals(2)) {
fail();
} else if (key.equals(3)) {
fail();
} else {
result.put(key, null);
}
}
return result.entrySet();
}
});
assertThat(result.size(), is(6));
assertThat(result.get(1).value(), Matchers.<CharSequence>equalTo("one"));
assertThat(result.get(2).value(), Matchers.<CharSequence>equalTo("two"));
assertThat(result.get(3).value(), Matchers.<CharSequence>equalTo("three"));
assertThat(result.get(4), is(nullValue()));
assertThat(result.get(5), is(nullValue()));
assertThat(result.get(6), is(nullValue()));
assertThat(store.get(1).value(), Matchers.<CharSequence>equalTo("one"));
assertThat(store.get(2).value(), Matchers.<CharSequence>equalTo("two"));
assertThat(store.get(3).value(), Matchers.<CharSequence>equalTo("three"));
assertThat(store.get(4), is(nullValue()));
assertThat(store.get(5), is(nullValue()));
assertThat(store.get(6), is(nullValue()));
}
@Test
public void testBulkComputeIfAbsentDoNothingOnNullValues() throws Exception {
Store.Configuration<Number, CharSequence> configuration = mockStoreConfig();
OnHeapStore<Number, CharSequence> store =
new OnHeapStore<Number, CharSequence>(configuration, SystemTimeSource.INSTANCE, false);
store.put(1, "one");
store.put(2, "two");
store.put(3, "three");
Map<Number, Store.ValueHolder<CharSequence>> result =
store.bulkComputeIfAbsent(
Arrays.asList(2, 1, 5),
new Function<
Iterable<? extends Number>,
Iterable<? extends Map.Entry<? extends Number, ? extends CharSequence>>>() {
@Override
public Iterable<? extends Map.Entry<? extends Number, ? extends CharSequence>> apply(
Iterable<? extends Number> numbers) {
Map<Number, CharSequence> result = new HashMap<Number, CharSequence>();
for (Number key : numbers) {
// 5 is a missing key, so it's the only key that is going passed to the function
if (key.equals(5)) {
result.put(key, null);
}
}
Set<Number> numbersSet = new HashSet<Number>();
for (Number number : numbers) {
numbersSet.add(number);
}
assertThat(numbersSet.size(), is(1));
assertThat(numbersSet.iterator().next(), Matchers.<Number>equalTo(5));
return result.entrySet();
}
});
assertThat(result.size(), is(3));
assertThat(result.get(2).value(), Matchers.<CharSequence>equalTo("two"));
assertThat(result.get(1).value(), Matchers.<CharSequence>equalTo("one"));
assertThat(result.get(5), is(nullValue()));
assertThat(store.get(1).value(), Matchers.<CharSequence>equalTo("one"));
assertThat(store.get(2).value(), Matchers.<CharSequence>equalTo("two"));
assertThat(store.get(3).value(), Matchers.<CharSequence>equalTo("three"));
assertThat(store.get(5), is(nullValue()));
}
@Test
public void testValueUniqueObject() throws Exception {
OnHeapStore<Serializable, Serializable> store = newStore();
String key = "key";
List<String> value = new ArrayList<String>();
value.add("value");
store.put(key, (Serializable) value);
// mutate the value -- should not affect cache
value.clear();
ValueHolder<Serializable> valueHolder = store.get(key);
if (valueHolder.value() == value
|| !valueHolder.value().equals(Collections.singletonList("value"))) {
throw new AssertionError();
}
}
@Test
public void testBulkComputeHappyPath() throws Exception {
Store.Configuration<Number, CharSequence> configuration = mockStoreConfig();
OnHeapStore<Number, CharSequence> store =
new OnHeapStore<Number, CharSequence>(configuration, SystemTimeSource.INSTANCE, false);
store.put(1, "one");
Map<Number, Store.ValueHolder<CharSequence>> result =
store.bulkCompute(
Arrays.asList(1, 2),
new Function<
Iterable<? extends Map.Entry<? extends Number, ? extends CharSequence>>,
Iterable<? extends Map.Entry<? extends Number, ? extends CharSequence>>>() {
@Override
public Iterable<? extends Map.Entry<? extends Number, ? extends CharSequence>> apply(
Iterable<? extends Map.Entry<? extends Number, ? extends CharSequence>> entries) {
Map<Number, CharSequence> newValues = new HashMap<Number, CharSequence>();
for (Map.Entry<? extends Number, ? extends CharSequence> entry : entries) {
if (entry.getKey().intValue() == 1) {
newValues.put(entry.getKey(), "un");
} else if (entry.getKey().intValue() == 2) {
newValues.put(entry.getKey(), "deux");
}
}
return newValues.entrySet();
}
});
assertThat(result.size(), is(2));
assertThat(result.get(1).value(), Matchers.<CharSequence>equalTo("un"));
assertThat(result.get(2).value(), Matchers.<CharSequence>equalTo("deux"));
assertThat(store.get(1).value(), Matchers.<CharSequence>equalTo("un"));
assertThat(store.get(2).value(), Matchers.<CharSequence>equalTo("deux"));
}
@Test
public void testBulkComputeFunctionGetsValuesOfEntries() throws Exception {
@SuppressWarnings("rawtypes")
Store.Configuration config = mock(Store.Configuration.class);
when(config.getExpiry()).thenReturn(Expirations.noExpiration());
when(config.getKeyType()).thenReturn(Number.class);
when(config.getValueType()).thenReturn(Number.class);
Store.Configuration<Number, Number> configuration = config;
OnHeapStore<Number, Number> store =
new OnHeapStore<Number, Number>(configuration, SystemTimeSource.INSTANCE, false);
store.put(1, 2);
store.put(2, 3);
store.put(3, 4);
Map<Number, Store.ValueHolder<Number>> result =
store.bulkCompute(
Arrays.asList(1, 2, 3, 4, 5, 6),
new Function<
Iterable<? extends Map.Entry<? extends Number, ? extends Number>>,
Iterable<? extends Map.Entry<? extends Number, ? extends Number>>>() {
@Override
public Iterable<? extends Map.Entry<? extends Number, ? extends Number>> apply(
Iterable<? extends Map.Entry<? extends Number, ? extends Number>> entries) {
Map<Number, Number> newValues = new HashMap<Number, Number>();
for (Map.Entry<? extends Number, ? extends Number> entry : entries) {
final Number currentValue = entry.getValue();
if (currentValue == null) {
if (entry.getKey().equals(4)) {
newValues.put(entry.getKey(), null);
} else {
newValues.put(entry.getKey(), 0);
}
} else {
newValues.put(entry.getKey(), currentValue.intValue() * 2);
}
}
return newValues.entrySet();
}
});
ConcurrentMap<Number, Number> check = new ConcurrentHashMap<Number, Number>();
check.put(1, 4);
check.put(2, 6);
check.put(3, 8);
check.put(4, 0);
check.put(5, 0);
check.put(6, 0);
assertThat(result.get(1).value(), Matchers.<Number>is(check.get(1)));
assertThat(result.get(2).value(), Matchers.<Number>is(check.get(2)));
assertThat(result.get(3).value(), Matchers.<Number>is(check.get(3)));
assertThat(result.get(4), nullValue());
assertThat(result.get(5).value(), Matchers.<Number>is(check.get(5)));
assertThat(result.get(6).value(), Matchers.<Number>is(check.get(6)));
for (Number key : check.keySet()) {
final Store.ValueHolder<Number> holder = store.get(key);
if (holder != null) {
check.remove(key, holder.value());
}
}
assertThat(check.size(), is(1));
assertThat(check.containsKey(4), is(true));
}