private string FormatLogicalExpression(IFilterTree tree, bool isolate)
{
var operatorText = TokenMappings.TokenTypeToDefaultValueMap[tree.Token.Type];
string resultExpression;
if (TokenMappings.IsBinaryLogicalOperation(tree.Token))
{
var operandTexts = new List <string>();
foreach (var childItem in tree.GetChildren())
{
operandTexts.Add(FormatExpression(childItem, true));
}
resultExpression = string.Join($" {operatorText} ", operandTexts);
}
else if (TokenMappings.IsUnaryLogicalOperation(tree.Token))
{
var childNode = tree.GetChild(0);
var operandText = FormatExpression(childNode, false);
resultExpression = TokenMappings.IsBinaryLogicalOperation(childNode.Token)
? $"{operatorText} ({operandText})"
: $"{operatorText} {operandText}";
}
else
{
throw new FormaterException($"Encountered unexpected node of type {tree.Token.Type}.");
}
return(isolate
? $"({resultExpression})"
: resultExpression);
}
public StackingViewSpecification(string viewDisplayName, IFilterTree filterTree,
IEnumerable <Guid> necessaryMIATypeIDs, IEnumerable <Guid> optionalMIATypeIDs, bool onlyOnline) :
base(viewDisplayName, filterTree, necessaryMIATypeIDs, optionalMIATypeIDs, onlyOnline)
{
SortedSubViews = true; // Stacking view has special sorting included.
CustomItemsListSorting = SortByRecordingDate;
}
public void TestFilterTree()
{
IFilterTree tree = new RelationshipFilterTree(baseRole);
tree.AddFilter(new RelationalFilter(MediaAspect.ATTR_TITLE, RelationalOperator.EQ, "Item2"),
new FilterTreePath(item1Role, item2Role));
tree.AddFilter(new RelationalFilter(MediaAspect.ATTR_TITLE, RelationalOperator.EQ, "Item3"),
new FilterTreePath(item1Role, item3Role));
tree.AddFilter(new RelationalFilter(MediaAspect.ATTR_TITLE, RelationalOperator.EQ, "Item1"),
new FilterTreePath(item1Role));
tree.AddFilter(new RelationalFilter(MediaAspect.ATTR_TITLE, RelationalOperator.EQ, "Item0"));
//No linked ids, should build full filter in both directions
TestFilterTreeNoLinkedIds(tree);
//Test copy
IFilterTree copy = tree.DeepCopy();
TestFilterTreeNoLinkedIds(copy);
//Add a linked id in the middle, should optimise by ignoring any filters on the linked media item
tree.AddLinkedId(item1Id, new FilterTreePath(item1Role));
TestFilterTreeWithLinkedIds(tree);
//Test copy
copy = tree.DeepCopy();
TestFilterTreeWithLinkedIds(copy);
}
public MediaLibraryQueryViewSpecification(string viewDisplayName, IFilterTree filterTree,
IEnumerable <Guid> necessaryMIATypeIDs, IEnumerable <Guid> optionalMIATypeIDs, bool onlyOnline) :
base(viewDisplayName, necessaryMIATypeIDs, optionalMIATypeIDs)
{
_filterTree = filterTree ?? new SimpleFilterTree();
_query = new MediaItemQuery(necessaryMIATypeIDs, optionalMIATypeIDs, _filterTree.BuildFilter());
_onlyOnline = onlyOnline;
}
/// <inheritdoc />
/// <exception cref="ArgumentNullException"><paramref name="tree"/> is <see langword="null" />.</exception>
public string FormatString(IFilterTree tree)
{
if (tree == null)
{
throw new ArgumentNullException(nameof(tree));
}
return(FormatExpression(tree));
}
/// <exception cref="ArgumentNullException"><paramref name="expected"/> or <paramref name="actual"/> is <see langword="null" />.</exception>
public static bool CompareTrees([NotNull] IFilterTree expected, [NotNull] IFilterTree actual)
{
if (expected == null)
{
throw new ArgumentNullException(nameof(expected));
}
if (actual == null)
{
throw new ArgumentNullException(nameof(actual));
}
if (expected.Token.Type != actual.Token.Type)
{
return(false);
}
if (expected.ChildCount != actual.ChildCount)
{
return(false);
}
if (IsContentToken(expected.Token.Type))
{
if (expected.Token.Type == TokenType.Real)
{
var expectedValue = ToDouble(expected.Token.Value);
var actualValue = ToDouble(actual.Token.Value);
// a precision of 10^-12 is enough (same as defined in Zeiss.PiWeb.Common.Util.DoubleCompareHelper)
return(Math.Abs(expectedValue - actualValue) <= 1e-12);
}
if (expected.Token.Type == TokenType.Integer)
{
var expectedValue = int.Parse(expected.Token.Value);
var actualValue = int.Parse(actual.Token.Value);
return(expectedValue == actualValue);
}
if (!string.Equals(expected.Token.Value, actual.Token.Value))
{
return(false);
}
}
for (var i = 0; i < expected.ChildCount; ++i)
{
if (!CompareTrees(expected.GetChild(i), actual.GetChild(i)))
{
return(false);
}
}
return(true);
}
public static IFilterTree MakeLegacyValueList(params string[] values)
{
var items = new IFilterTree[values.Length];
for (var i = 0; i < values.Length; ++i)
{
items[i] = MakeLegacyValue(values[i]);
}
return(new FilterTree(new Token(TokenType.LegacyValueList), items));
}
private string FormatComparisonExpression(IFilterTree tree)
{
var attributeText = tree.GetChild(0).Token.Value;
var operatorText = TokenMappings.TokenTypeToLegacyValueMap[tree.Token.Type];
var contentText = TokenMappings.IsListOperation(tree.Token)
? FormatValueList(tree.GetChild(1))
: FormatValue(tree.GetChild(1));
return($"{attributeText} {operatorText} [{contentText}]");
}
private static string FormatValue(IFilterTree tree)
{
if (tree.Token.Type != TokenType.LegacyValue)
{
throw new UnsupportedTokenException(tree.Token);
}
if (tree.Token.Value.IndexOf(']') != -1)
{
throw new UnsupportedCharacterException(']', tree.Token);
}
return(tree.Token.Value);
}
private string FormatExpression(IFilterTree tree)
{
if (TokenMappings.IsLogicalOperation(tree.Token))
{
return(FormatLogicalExpression(tree));
}
if (TokenMappings.IsComparisonOperation(tree.Token))
{
return(FormatComparisonExpression(tree));
}
throw new FormaterException($"Encountered unexpected node of type {tree.Token.Type}.");
}
/// <summary>
/// Initializes a new instance of the <see cref="FilterTree"/> class.
/// </summary>
/// <exception cref="ArgumentNullException"><paramref name="token"/> or <paramref name="child"/> is <see langword="null" />.</exception>
public FilterTree([NotNull] Token token, [NotNull] IFilterTree child)
{
if (child == null)
{
throw new ArgumentNullException(nameof(child));
}
_Children = new ReadOnlyCollection <IFilterTree>(new List <IFilterTree> {
child
});
Token = token ?? throw new ArgumentNullException(nameof(token));
PositionSetup();
}
private static string FormatValue(IFilterTree tree)
{
var text = tree.Token.Value;
switch (tree.Token.Type)
{
case TokenType.String:
return(EscapeText(text));
case TokenType.Integer:
case TokenType.Real:
return(text);
default:
throw new UnsupportedTokenException(tree.Token);
}
}
private static string FormatValueList(IFilterTree tree)
{
var elementTexts = new List <string>();
foreach (var treeItem in tree.GetChildren())
{
var text = FormatValue(treeItem);
if (NeedsEscaping(text))
{
text = EscapeText(text);
}
elementTexts.Add(text);
}
return(string.Join(", ", elementTexts));
}
void TestFilterTreeWithLinkedIds(IFilterTree tree)
{
IFilter item0Filter = tree.BuildFilter();
Assert.AreEqual(item0Filter.ToString(),
"MediaItem.Title EQ Item0 And (LINKED_ID = '11111111-aaaa-aaaa-aaaa-111111111111' AND ROLE = '00000000-aaaa-aaaa-aaaa-111111111111' AND LINKED_ROLE = '22222222-aaaa-aaaa-aaaa-111111111111')");
IFilter item1Filter = tree.BuildFilter(new FilterTreePath(item1Role));
Assert.AreEqual(item1Filter.ToString(),
"MEDIA_ITEM_ID = '11111111-aaaa-aaaa-aaaa-111111111111'");
IFilter item2Filter = tree.BuildFilter(new FilterTreePath(item1Role, item2Role));
Assert.AreEqual(item2Filter.ToString(),
"MediaItem.Title EQ Item2 And (LINKED_ID = '11111111-aaaa-aaaa-aaaa-111111111111' AND ROLE = '44444444-aaaa-aaaa-aaaa-111111111111' AND LINKED_ROLE = '22222222-aaaa-aaaa-aaaa-111111111111')");
}
void TestFilterTreeNoLinkedIds(IFilterTree tree)
{
IFilter item0Filter = tree.BuildFilter();
Assert.AreEqual(item0Filter.ToString(),
"MediaItem.Title EQ Item0 And (ROLE = '00000000-aaaa-aaaa-aaaa-111111111111' AND LINKED_ROLE = '22222222-aaaa-aaaa-aaaa-111111111111' AND LINKED_ID IN (MediaItem.Title EQ Item1 And (ROLE = '22222222-aaaa-aaaa-aaaa-111111111111' AND LINKED_ROLE = '44444444-aaaa-aaaa-aaaa-111111111111' AND LINKED_ID IN (MediaItem.Title EQ Item2)) And (ROLE = '22222222-aaaa-aaaa-aaaa-111111111111' AND LINKED_ROLE = '66666666-aaaa-aaaa-aaaa-111111111111' AND LINKED_ID IN (MediaItem.Title EQ Item3))))");
IFilter item1Filter = tree.BuildFilter(new FilterTreePath(item1Role));
Assert.AreEqual(item1Filter.ToString(),
"MediaItem.Title EQ Item1 And (ROLE = '22222222-aaaa-aaaa-aaaa-111111111111' AND LINKED_ROLE = '44444444-aaaa-aaaa-aaaa-111111111111' AND LINKED_ID IN (MediaItem.Title EQ Item2)) And (ROLE = '22222222-aaaa-aaaa-aaaa-111111111111' AND LINKED_ROLE = '66666666-aaaa-aaaa-aaaa-111111111111' AND LINKED_ID IN (MediaItem.Title EQ Item3)) And (ROLE = '22222222-aaaa-aaaa-aaaa-111111111111' AND LINKED_ROLE = '00000000-aaaa-aaaa-aaaa-111111111111' AND LINKED_ID IN (MediaItem.Title EQ Item0))");
IFilter item2Filter = tree.BuildFilter(new FilterTreePath(item1Role, item2Role));
Assert.AreEqual(item2Filter.ToString(),
"MediaItem.Title EQ Item2 And (ROLE = '44444444-aaaa-aaaa-aaaa-111111111111' AND LINKED_ROLE = '22222222-aaaa-aaaa-aaaa-111111111111' AND LINKED_ID IN (MediaItem.Title EQ Item1 And (ROLE = '22222222-aaaa-aaaa-aaaa-111111111111' AND LINKED_ROLE = '66666666-aaaa-aaaa-aaaa-111111111111' AND LINKED_ID IN (MediaItem.Title EQ Item3)) And (ROLE = '22222222-aaaa-aaaa-aaaa-111111111111' AND LINKED_ROLE = '00000000-aaaa-aaaa-aaaa-111111111111' AND LINKED_ID IN (MediaItem.Title EQ Item0))))");
}
private static string FormatValueList(IFilterTree tree)
{
if (tree.Token.Type != TokenType.ValueList)
{
throw new UnsupportedTokenException(tree.Token);
}
var elementTexts = new List <string>();
foreach (var treeItem in tree.GetChildren())
{
var text = FormatValue(treeItem);
elementTexts.Add(text);
}
var innerList = string.Join(", ", elementTexts);
return($"({innerList})");
}
public MediaLibraryQueryViewSpecification CreateSubViewSpecification(string viewDisplayName, FilterTreePath filterPath, IFilter filter, Guid?linkedId)
{
IFilterTree newFilterTree = _filterTree.DeepCopy();
if (linkedId.HasValue)
{
newFilterTree.AddLinkedId(linkedId.Value, filterPath);
}
else if (filter != null)
{
newFilterTree.AddFilter(filter, filterPath);
}
return(new MediaLibraryQueryViewSpecification(viewDisplayName, newFilterTree, _necessaryMIATypeIds, _optionalMIATypeIds, _onlyOnline)
{
MaxNumItems = _maxNumItems,
FilterPath = filterPath
});
}
private string FormatLogicalExpression(IFilterTree tree)
{
if (tree.Token.Type != TokenType.And)
{
throw new UnsupportedTokenException(tree.Token);
}
var operatorText = TokenMappings.TokenTypeToLegacyValueMap[tree.Token.Type];
var operandTexts = new List <string>();
foreach (var childItem in tree.GetChildren())
{
operandTexts.Add(FormatExpression(childItem));
}
var resultExpression = string.Join($" {operatorText} ", operandTexts);
return(resultExpression);
}
/// <exception cref="ArgumentNullException"><paramref name="attrName"/> is <see langword="null" />.</exception>
internal static IFilterTree MakeComparison(TokenType operationToken, [NotNull] string attrName, IFilterTree valueTree)
{
if (attrName == null)
{
throw new ArgumentNullException(nameof(attrName));
}
var attrItem = FilterTree.MakeAttr(attrName);
return(new FilterTree(new Token(operationToken), new[] { attrItem, valueTree }));
}
public virtual void InitMediaNavigation(out string mediaNavigationMode, out NavigationData navigationData)
{
Prepare();
string nextScreenName;
AbstractScreenData nextScreen = null;
// Try to load the prefered next screen from settings.
if (NavigationData.LoadScreenHierarchy(_viewName, out nextScreenName))
{
// Support for browsing mode.
if (nextScreenName == Consts.USE_BROWSE_MODE)
{
SetBrowseMode();
}
if (_availableScreens != null)
{
nextScreen = _availableScreens.FirstOrDefault(s => s.GetType().ToString() == nextScreenName);
}
}
IEnumerable <Guid> optionalMIATypeIDs = MediaNavigationModel.GetMediaSkinOptionalMIATypes(MediaNavigationMode);
if (_optionalMias != null)
{
optionalMIATypeIDs = optionalMIATypeIDs.Union(_optionalMias);
optionalMIATypeIDs = optionalMIATypeIDs.Except(_necessaryMias);
}
IFilterTree filterTree = _rootRole.HasValue ? new RelationshipFilterTree(_rootRole.Value) : (IFilterTree) new SimpleFilterTree();
filterTree.AddFilter(_filter);
// Prefer custom view specification.
ViewSpecification rootViewSpecification = _customRootViewSpecification ??
new MediaLibraryQueryViewSpecification(_viewName, filterTree, _necessaryMias, optionalMIATypeIDs, true)
{
MaxNumItems = Consts.MAX_NUM_ITEMS_VISIBLE
};
if (nextScreen == null)
{
nextScreen = _defaultScreen;
}
ScreenConfig nextScreenConfig;
NavigationData.LoadLayoutSettings(nextScreen.GetType().ToString(), out nextScreenConfig);
Sorting.Sorting nextSortingMode = _availableSortings.FirstOrDefault(sorting => sorting.GetType().ToString() == nextScreenConfig.Sorting) ?? _defaultSorting;
Sorting.Sorting nextGroupingMode = _availableGroupings == null || String.IsNullOrEmpty(nextScreenConfig.Grouping) ? null : _availableGroupings.FirstOrDefault(grouping => grouping.GetType().ToString() == nextScreenConfig.Grouping) ?? _defaultGrouping;
navigationData = new NavigationData(null, _viewName, MediaNavigationRootState,
MediaNavigationRootState, rootViewSpecification, nextScreen, _availableScreens, nextSortingMode, nextGroupingMode)
{
AvailableSortings = _availableSortings,
AvailableGroupings = _availableGroupings,
LayoutType = nextScreenConfig.LayoutType,
LayoutSize = nextScreenConfig.LayoutSize
};
mediaNavigationMode = MediaNavigationMode;
}
public static IFilterTree MakeNot(IFilterTree child)
{
return(new FilterTree(new Token(TokenType.Not), new[] { child }));
}
private static string FormatBooleanValue(IFilterTree tree)
{
var text = TokenMappings.TokenTypeToDefaultValueMap[tree.Token.Type];
return(text);
}
public virtual void InitMediaNavigation(MediaNavigationConfig config, out string mediaNavigationMode, out NavigationData navigationData)
{
PrepareAsync().Wait();
IFilterTree filterTree = _customFilterTree ?? (_rootRole.HasValue ? new RelationshipFilterTree(_rootRole.Value) : (IFilterTree) new SimpleFilterTree());
if (_filter != null)
{
filterTree.AddFilter(_filter);
}
//Default configuration
string viewName = _viewName;
AbstractScreenData nextScreen = null;
//Apply any custom configuration
if (config != null)
{
if (_availableScreens != null)
{
//Use the configured root screen to load the next screen from the hierarchy
//and remove it from the list of available screens
AbstractScreenData configRoot = config.RootScreenType != null?_availableScreens.FirstOrDefault(s => s.GetType() == config.RootScreenType) : null;
if (configRoot != null)
{
viewName = configRoot.GetType().ToString();
_availableScreens.Remove(configRoot);
}
//Use the configured default screen if there is no saved screen hierarchy
AbstractScreenData configDefault = config.DefaultScreenType != null?_availableScreens.FirstOrDefault(s => s.GetType() == config.DefaultScreenType) : null;
if (configDefault != null)
{
_defaultScreen = configDefault;
// If we want to force the default screen to be shown, set the next screen
// here to avoid loading it from the screen hierarchy below.
if (config.AlwaysUseDefaultScreen)
{
nextScreen = configDefault;
}
}
}
//Apply any additional filters
if (config.LinkedId.HasValue)
{
filterTree.AddLinkedId(config.LinkedId.Value, config.FilterPath);
}
if (config.Filter != null)
{
filterTree.AddFilter(config.Filter, config.FilterPath);
}
}
IEnumerable <Guid> optionalMIATypeIDs = MediaNavigationModel.GetMediaSkinOptionalMIATypes(MediaNavigationMode);
if (_optionalMias != null)
{
optionalMIATypeIDs = optionalMIATypeIDs.Union(_optionalMias).Except(_necessaryMias);
}
// Try to load the prefered next screen from settings if not already set.
if (nextScreen == null && NavigationData.LoadScreenHierarchy(viewName, out string nextScreenName))
{
// Support for browsing mode.
if (nextScreenName == Consts.USE_BROWSE_MODE)
{
SetBrowseMode(optionalMIATypeIDs);
}
if (_availableScreens != null)
{
nextScreen = _availableScreens.FirstOrDefault(s => s.GetType().ToString() == nextScreenName);
}
}
if (_applyUserFilter)
{
var userFilter = UserHelper.GetUserRestrictionFilter(_necessaryMias.ToList());
if (userFilter != null)
{
filterTree.AddFilter(userFilter);
}
}
// Prefer custom view specification.
ViewSpecification rootViewSpecification = _customRootViewSpecification ??
// Always use the default view name for the root view specification, not any custom name that may
// have been specified in a navigation config, otherwise toggling browse mode won't work correctly.
// To switch to browse mode we update the root screen hierarchy to point to the browse screen and
// then navigate to the root wf state. The name of the root screen hierarchy is determined by the
// name specified here so it should always point to the actual root view name.
new MediaLibraryQueryViewSpecification(_viewName, filterTree, _necessaryMias, optionalMIATypeIDs, true)
{
MaxNumItems = Consts.MAX_NUM_ITEMS_VISIBLE,
};
if (nextScreen == null)
{
nextScreen = _defaultScreen;
}
ScreenConfig nextScreenConfig;
NavigationData.LoadLayoutSettings(nextScreen.GetType().ToString(), out nextScreenConfig);
Sorting.Sorting nextSortingMode = _availableSortings.FirstOrDefault(sorting => sorting.GetType().ToString() == nextScreenConfig.Sorting) ?? _defaultSorting;
Sorting.Sorting nextGroupingMode = _availableGroupings == null || String.IsNullOrEmpty(nextScreenConfig.Grouping) ? null : _availableGroupings.FirstOrDefault(grouping => grouping.GetType().ToString() == nextScreenConfig.Grouping) ?? _defaultGrouping;
navigationData = new NavigationData(null, viewName, MediaNavigationRootState,
MediaNavigationRootState, rootViewSpecification, nextScreen, _availableScreens, nextSortingMode, nextGroupingMode)
{
AvailableSortings = _availableSortings,
AvailableGroupings = _availableGroupings,
LayoutType = nextScreenConfig.LayoutType,
LayoutSize = nextScreenConfig.LayoutSize
};
mediaNavigationMode = MediaNavigationMode;
}