public void testStrategy()
{
FastIDSet itemIDsFromUser123 = new FastIDSet();
itemIDsFromUser123.Add(1L);
FastIDSet itemIDsFromUser456 = new FastIDSet();
itemIDsFromUser456.Add(1L);
itemIDsFromUser456.Add(2L);
List<IPreference> prefs = new List<IPreference>();
prefs.Add(new GenericPreference(123L, 1L, 1.0f));
prefs.Add(new GenericPreference(456L, 1L, 1.0f));
IPreferenceArray preferencesForItem1 = new GenericItemPreferenceArray(prefs);
var dataModelMock = new DynamicMock(typeof(IDataModel));
dataModelMock.ExpectAndReturn("GetPreferencesForItem", preferencesForItem1, (1L));
dataModelMock.ExpectAndReturn("GetItemIDsFromUser", itemIDsFromUser123, (123L));
dataModelMock.ExpectAndReturn("GetItemIDsFromUser", itemIDsFromUser456, (456L));
IPreferenceArray prefArrayOfUser123 =
new GenericUserPreferenceArray( new List<IPreference>() {new GenericPreference(123L, 1L, 1.0f)} );
ICandidateItemsStrategy strategy = new PreferredItemsNeighborhoodCandidateItemsStrategy();
//EasyMock.replay(dataModel);
FastIDSet candidateItems = strategy.GetCandidateItems(123L, prefArrayOfUser123, (IDataModel)dataModelMock.MockInstance);
Assert.AreEqual(1, candidateItems.Count());
Assert.True(candidateItems.Contains(2L));
dataModelMock.Verify(); // EasyMock.verify(dataModel);
}
private static IPreferenceArray cloneAndMergeInto(IPreferenceArray delegatePrefs,
long itemID,
long newUserID,
float value)
{
int length = delegatePrefs == null ? 0 : delegatePrefs.Length();
int newLength = length + 1;
IPreferenceArray newPreferenceArray = new GenericItemPreferenceArray(newLength);
// Set item ID once
newPreferenceArray.SetItemID(0, itemID);
int positionToInsert = 0;
while (positionToInsert < length && newUserID > delegatePrefs.GetUserID(positionToInsert))
{
positionToInsert++;
}
for (int i = 0; i < positionToInsert; i++)
{
newPreferenceArray.SetUserID(i, delegatePrefs.GetUserID(i));
newPreferenceArray.SetValue(i, delegatePrefs.GetValue(i));
}
newPreferenceArray.SetUserID(positionToInsert, newUserID);
newPreferenceArray.SetValue(positionToInsert, value);
for (int i = positionToInsert + 1; i < newLength; i++)
{
newPreferenceArray.SetUserID(i, delegatePrefs.GetUserID(i - 1));
newPreferenceArray.SetValue(i, delegatePrefs.GetValue(i - 1));
}
return(newPreferenceArray);
}
public void testHasPref()
{
IPreferenceArray prefs = new GenericItemPreferenceArray(3);
prefs.Set(0, new GenericPreference(1L, 3L, 5.0f));
Assert.True(prefs.HasPrefWithItemID(3L));
Assert.True(prefs.HasPrefWithUserID(1L));
Assert.False(prefs.HasPrefWithItemID(2L));
Assert.False(prefs.HasPrefWithUserID(2L));
}
public override IPreferenceArray GetPreferencesForItem(long itemID)
{
if (tempPrefs.Count == 0)
{
return(getDelegate().GetPreferencesForItem(itemID));
}
IPreferenceArray delegatePrefs = null;
try {
delegatePrefs = getDelegate().GetPreferencesForItem(itemID);
} catch (NoSuchItemException nsie) {
// OK. Probably an item that only the anonymous user has
//if (log.isDebugEnabled()) {
// log.debug("Item {} unknown", itemID);
//}
}
List <IPreference> anonymousPreferences = new List <IPreference>();
foreach (var prefsMap in tempPrefs)
{
IPreferenceArray singleUserTempPrefs = prefsMap.Value;
for (int i = 0; i < singleUserTempPrefs.Length(); i++)
{
if (singleUserTempPrefs.GetItemID(i) == itemID)
{
anonymousPreferences.Add(singleUserTempPrefs.Get(i));
}
}
}
int delegateLength = delegatePrefs == null ? 0 : delegatePrefs.Length();
int anonymousPrefsLength = anonymousPreferences.Count;
int prefsCounter = 0;
// Merge the delegate and anonymous preferences into a single array
IPreferenceArray newPreferenceArray = new GenericItemPreferenceArray(delegateLength + anonymousPrefsLength);
for (int i = 0; i < delegateLength; i++)
{
newPreferenceArray.Set(prefsCounter++, delegatePrefs.Get(i));
}
foreach (IPreference anonymousPreference in anonymousPreferences)
{
newPreferenceArray.Set(prefsCounter++, anonymousPreference);
}
if (newPreferenceArray.Length() == 0)
{
// No, didn't find it among the anonymous user prefs
throw new NoSuchItemException(itemID);
}
return(newPreferenceArray);
}
public override bool Equals(Object other)
{
if (!(other is GenericItemPreferenceArray))
{
return(false);
}
GenericItemPreferenceArray otherArray = (GenericItemPreferenceArray)other;
return(id == otherArray.id && Enumerable.SequenceEqual(ids, otherArray.ids) && Enumerable.SequenceEqual(values, otherArray.values));
}
public void testHasPref()
{
IPreferenceArray prefs = new GenericItemPreferenceArray(3);
prefs.Set(0, new GenericPreference(1L, 3L, 5.0f));
Assert.True(prefs.HasPrefWithItemID(3L));
Assert.True(prefs.HasPrefWithUserID(1L));
Assert.False(prefs.HasPrefWithItemID(2L));
Assert.False(prefs.HasPrefWithUserID(2L));
}
public void testUserID()
{
IPreferenceArray prefs = new GenericItemPreferenceArray(3);
Assert.AreEqual(3, prefs.Length());
prefs.SetItemID(0, 1L);
Assert.AreEqual(1L, prefs.GetItemID(0));
Assert.AreEqual(1L, prefs.GetItemID(1));
Assert.AreEqual(1L, prefs.GetItemID(2));
}
public void testSetValue()
{
IPreferenceArray prefs = new GenericItemPreferenceArray(3);
Assert.AreEqual(3, prefs.Length());
prefs.SetValue(0, 1.0f);
prefs.SetValue(1, 2.0f);
prefs.SetValue(2, 3.0f);
Assert.AreEqual(1.0f, prefs.GetValue(0), EPSILON);
Assert.AreEqual(2.0f, prefs.GetValue(1), EPSILON);
Assert.AreEqual(3.0f, prefs.GetValue(2), EPSILON);
}
public void testItemID()
{
IPreferenceArray prefs = new GenericItemPreferenceArray(3);
Assert.AreEqual(3, prefs.Length());
prefs.SetUserID(0, 1L);
prefs.SetUserID(1, 2L);
prefs.SetUserID(2, 3L);
Assert.AreEqual(1L, prefs.GetUserID(0));
Assert.AreEqual(2L, prefs.GetUserID(1));
Assert.AreEqual(3L, prefs.GetUserID(2));
}
public void testClone()
{
GenericItemPreferenceArray prefs = new GenericItemPreferenceArray(3);
prefs.Set(0, new GenericPreference(3L, 1L, 5.0f));
prefs.Set(1, new GenericPreference(1L, 1L, 4.0f));
prefs.Set(2, new GenericPreference(2L, 1L, 3.0f));
prefs = (GenericItemPreferenceArray)prefs.Clone();
Assert.AreEqual(3L, prefs.GetUserID(0));
Assert.AreEqual(1L, prefs.GetItemID(1));
Assert.AreEqual(3.0f, prefs.GetValue(2), EPSILON);
}
public void testSort()
{
IPreferenceArray prefs = new GenericItemPreferenceArray(3);
prefs.Set(0, new GenericPreference(3L, 1L, 5.0f));
prefs.Set(1, new GenericPreference(1L, 1L, 5.0f));
prefs.Set(2, new GenericPreference(2L, 1L, 5.0f));
prefs.SortByUser();
Assert.AreEqual(1L, prefs.GetUserID(0));
Assert.AreEqual(2L, prefs.GetUserID(1));
Assert.AreEqual(3L, prefs.GetUserID(2));
}
public void testSetValue()
{
IPreferenceArray prefs = new GenericItemPreferenceArray(3);
Assert.AreEqual(3, prefs.Length());
prefs.SetValue(0, 1.0f);
prefs.SetValue(1, 2.0f);
prefs.SetValue(2, 3.0f);
Assert.AreEqual(1.0f, prefs.GetValue(0), EPSILON);
Assert.AreEqual(2.0f, prefs.GetValue(1), EPSILON);
Assert.AreEqual(3.0f, prefs.GetValue(2), EPSILON);
}
public void testClone()
{
GenericItemPreferenceArray prefs = new GenericItemPreferenceArray(3);
prefs.Set(0, new GenericPreference(3L, 1L, 5.0f));
prefs.Set(1, new GenericPreference(1L, 1L, 4.0f));
prefs.Set(2, new GenericPreference(2L, 1L, 3.0f));
prefs = (GenericItemPreferenceArray)prefs.Clone();
Assert.AreEqual(3L, prefs.GetUserID(0));
Assert.AreEqual(1L, prefs.GetItemID(1));
Assert.AreEqual(3.0f, prefs.GetValue(2), EPSILON);
}
public void testSort()
{
IPreferenceArray prefs = new GenericItemPreferenceArray(3);
prefs.Set(0, new GenericPreference(3L, 1L, 5.0f));
prefs.Set(1, new GenericPreference(1L, 1L, 5.0f));
prefs.Set(2, new GenericPreference(2L, 1L, 5.0f));
prefs.SortByUser();
Assert.AreEqual(1L, prefs.GetUserID(0));
Assert.AreEqual(2L, prefs.GetUserID(1));
Assert.AreEqual(3L, prefs.GetUserID(2));
}
public override IPreferenceArray GetPreferencesForItem(long itemID) {
if (tempPrefs.Count==0) {
return getDelegate().GetPreferencesForItem(itemID);
}
IPreferenceArray delegatePrefs = null;
try {
delegatePrefs = getDelegate().GetPreferencesForItem(itemID);
} catch (NoSuchItemException nsie) {
// OK. Probably an item that only the anonymous user has
//if (log.isDebugEnabled()) {
// log.debug("Item {} unknown", itemID);
//}
}
List<IPreference> anonymousPreferences = new List<IPreference>();
foreach (var prefsMap in tempPrefs) {
IPreferenceArray singleUserTempPrefs = prefsMap.Value;
for (int i = 0; i < singleUserTempPrefs.Length(); i++) {
if (singleUserTempPrefs.GetItemID(i) == itemID) {
anonymousPreferences.Add(singleUserTempPrefs.Get(i));
}
}
}
int delegateLength = delegatePrefs == null ? 0 : delegatePrefs.Length();
int anonymousPrefsLength = anonymousPreferences.Count;
int prefsCounter = 0;
// Merge the delegate and anonymous preferences into a single array
IPreferenceArray newPreferenceArray = new GenericItemPreferenceArray(delegateLength + anonymousPrefsLength);
for (int i = 0; i < delegateLength; i++) {
newPreferenceArray.Set(prefsCounter++, delegatePrefs.Get(i));
}
foreach (IPreference anonymousPreference in anonymousPreferences) {
newPreferenceArray.Set(prefsCounter++, anonymousPreference);
}
if (newPreferenceArray.Length() == 0) {
// No, didn't find it among the anonymous user prefs
throw new NoSuchItemException(itemID);
}
return newPreferenceArray;
}
internal PreferenceView(GenericItemPreferenceArray arr, int i)
{
this.i = i;
this.arr = arr;
}
internal PreferenceView(GenericItemPreferenceArray arr, int i) {
this.i = i;
this.arr = arr;
}
private static IPreferenceArray cloneAndMergeInto(IPreferenceArray delegatePrefs,
long itemID,
long newUserID,
float value) {
int length = delegatePrefs == null ? 0 : delegatePrefs.Length();
int newLength = length + 1;
IPreferenceArray newPreferenceArray = new GenericItemPreferenceArray(newLength);
// Set item ID once
newPreferenceArray.SetItemID(0, itemID);
int positionToInsert = 0;
while (positionToInsert < length && newUserID > delegatePrefs.GetUserID(positionToInsert)) {
positionToInsert++;
}
for (int i = 0; i < positionToInsert; i++) {
newPreferenceArray.SetUserID(i, delegatePrefs.GetUserID(i));
newPreferenceArray.SetValue(i, delegatePrefs.GetValue(i));
}
newPreferenceArray.SetUserID(positionToInsert, newUserID);
newPreferenceArray.SetValue(positionToInsert, value);
for (int i = positionToInsert + 1; i < newLength; i++) {
newPreferenceArray.SetUserID(i, delegatePrefs.GetUserID(i - 1));
newPreferenceArray.SetValue(i, delegatePrefs.GetValue(i - 1));
}
return newPreferenceArray;
}
