/// <inheritdoc />
protected override MongoDbFilterDefinition HandleListOperation(
MongoDbFilterVisitorContext context,
IFilterField field,
MongoDbFilterScope scope,
string path)
{
var negatedChilds = new List <MongoDbFilterDefinition>();
Queue <MongoDbFilterDefinition> level = scope.Level.Peek();
while (level.Count > 0)
{
negatedChilds.Add(
new MongoDbFilterOperation(
path,
new MongoDbFilterOperation(
"$elemMatch",
new NotMongoDbFilterDefinition(level.Dequeue()))));
}
return(new AndFilterDefinition(
new MongoDbFilterOperation(
path,
new BsonDocument
{
{ "$exists", true },
{ "$nin", new BsonArray {
new BsonArray(), BsonNull.Value
} }
}),
new NotMongoDbFilterDefinition(
new OrMongoDbFilterDefinition(negatedChilds)
)));
}
/// <inheritdoc />
protected override MongoDbFilterDefinition HandleListOperation(
MongoDbFilterVisitorContext context,
IFilterField field,
MongoDbFilterScope scope,
string path) =>
field.Type is IComparableOperationFilterInputType
? CreateArrayAllScalar(scope, path)
: CreateArrayAll(scope, path);
/// <inheritdoc />
protected override MongoDbFilterDefinition HandleListOperation(
MongoDbFilterVisitorContext context,
IFilterField field,
MongoDbFilterScope scope,
string path)
{
return(new MongoDbFilterOperation(
path,
new MongoDbFilterOperation("$elemMatch", CombineOperationsOfScope(scope))));
}
/// <summary>
/// Combines all definitions of the <paramref name="scope"/> with and
/// </summary>
/// <param name="scope">The scope where the definitions should be combined</param>
/// <returns>A with and combined filter definition of all definitions of the scope</returns>
protected static MongoDbFilterDefinition CombineOperationsOfScope(
MongoDbFilterScope scope)
{
Queue <MongoDbFilterDefinition> level = scope.Level.Peek();
if (level.Count == 1)
{
return(level.Peek());
}
return(new AndFilterDefinition(level.ToArray()));
}
public static bool TryCreateQuery(
this MongoDbFilterScope scope,
[NotNullWhen(true)] out MongoDbFilterDefinition?query)
{
query = null;
if (scope.Level.Peek().Count == 0)
{
return(false);
}
query = new AndFilterDefinition(scope.Level.Peek().ToArray());
return(true);
}
private static MongoDbFilterDefinition CreateArrayAllScalar(
MongoDbFilterScope scope,
string path)
{
var negatedChilds = new List <MongoDbFilterDefinition>();
Queue <MongoDbFilterDefinition> level = scope.Level.Peek();
while (level.Count > 0)
{
negatedChilds.Add(
new MongoDbFilterOperation(
path,
new NotMongoDbFilterDefinition(level.Dequeue())));
}
return(new NotMongoDbFilterDefinition(
new OrMongoDbFilterDefinition(negatedChilds)));
}
/// <inheritdoc />
protected override MongoDbFilterDefinition HandleListOperation(
MongoDbFilterVisitorContext context,
IFilterField field,
MongoDbFilterScope scope,
string path)
{
return(new AndFilterDefinition(
new MongoDbFilterOperation(
path,
new BsonDocument
{
{ "$exists", true },
{ "$nin", new BsonArray {
new BsonArray(), BsonNull.Value
} }
}),
new MongoDbFilterOperation(
path,
new NotMongoDbFilterDefinition(
new MongoDbFilterOperation("$elemMatch", CombineOperationsOfScope(scope)))
)));
}
/// <summary>
/// Maps a operation field to a mongodb list filter definition.
/// This method is called when the <see cref="FilterVisitor{TContext,T}"/> enters a
/// field
/// </summary>
/// <param name="context">The context of the visitor</param>
/// <param name="field">The currently visited filter field</param>
/// <param name="scope">The current scope of the visitor</param>
/// <param name="path">The path that leads to this visitor</param>
/// <returns></returns>
protected abstract MongoDbFilterDefinition HandleListOperation(
MongoDbFilterVisitorContext context,
IFilterField field,
MongoDbFilterScope scope,
string path);
public static string GetPath(this MongoDbFilterScope scope) =>
string.Join(".", scope.Path.Reverse());
