Lite |
An IQueryable-like class to write fluent query in documents in collection.
Inheritance HierarchyNamespace: Internal.LiteDB
Assembly: NeoAxis.Core (in NeoAxis.Core.dll) Version: 2026.1.1.0 (2026.1.1.0)
SyntaxThe LiteQueryableT type exposes the following members.
Methods| Name | Description | |
|---|---|---|
 | Count | Execute Count methos in filter query |
| Equals | Determines whether the specified object is equal to the current object. (Inherited from Object) |
| ExecuteReader | Execute query and returns resultset as generic BsonDataReader |
| Exists | Returns true/false if query returns any result |
 | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object) |
| First | Returns first document of resultset |
| FirstOrDefault | Returns first document of resultset or null if resultset are empty |
| ForUpdate | Execute query locking collection in write mode. This is avoid any other thread change results after read document and before transaction ends |
| GetHashCode | Serves as the default hash function. (Inherited from Object) |
| GetPlan | Get execution plan over current query definition to see how engine will execute query |
| GetType | Gets the Type of the current instance. (Inherited from Object) |
| GroupBy | Groups the documents of resultset according to a specified key selector expression (support only one GroupBy) |
| Having | Filter documents after group by pipe according to predicate expression (requires GroupBy and support only one Having) |
| Include(BsonExpression) | Load cross reference documents from path expression (DbRef reference) |
| Include(ListBsonExpression) | Load cross reference documents from path expression (DbRef reference) |
| IncludeK(ExpressionFuncT, K) | Load cross reference documents from path expression (DbRef reference) |
| Into | |
| Limit | Return a specified number of contiguous documents from start of resultset |
| LongCount | Execute Count methos in filter query |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object) |
| Offset | Bypasses a specified number of documents in resultset and retun the remaining documents (same as Skip) |
| OrderBy(BsonExpression, Int32) | Sort the documents of resultset in ascending (or descending) order according to a key (support only one OrderBy) |
| OrderByK(ExpressionFuncT, K, Int32) | Sort the documents of resultset in ascending (or descending) order according to a key (support only one OrderBy) |
| OrderByDescending(BsonExpression) | Sort the documents of resultset in descending order according to a key (support only one OrderBy) |
| OrderByDescendingK(ExpressionFuncT, K) | Sort the documents of resultset in descending order according to a key (support only one OrderBy) |
| Select(BsonExpression) | Transform input document into a new output document. Can be used with each document, group by or all source |
| SelectK(ExpressionFuncT, K) | Project each document of resultset into a new document/value based on selector expression |
| Single | Returns the only document of resultset, and throw an exception if there not exactly one document in the sequence |
| SingleOrDefault | Returns the only document of resultset, or null if resultset are empty; this method throw an exception if there not exactly one document in the sequence |
| Skip | Bypasses a specified number of documents in resultset and retun the remaining documents (same as Offset) |
| ToArray | Execute query and return results as an Array |
| ToDocuments | Execute query and return resultset as IEnumerable of documents |
| ToEnumerable | Execute query and return resultset as IEnumerable of T. If T is a ValueType or String, return values only (not documents) |
| ToList | Execute query and return results as a List |
| ToString | Returns a string that represents the current object. (Inherited from Object) |
| Where(BsonExpression) | Filters a sequence of documents based on a predicate expression |
| Where(ExpressionFuncT, Boolean) | Filters a sequence of documents based on a predicate expression |
| Where(String, BsonDocument) | Filters a sequence of documents based on a predicate expression |
| Where(String, BsonValue) | Filters a sequence of documents based on a predicate expression |
Fields| Name | Description | |
|---|---|---|
 | _collection | |
| _engine | |
| _mapper | |
| _query |
Extension Methods| Name | Description | |
|---|---|---|
 | MethodInvoke |
Calls the object method by name.
(Defined by ObjectEx) |
| PropertyGet |
Gets the value of the object property by name.
(Defined by ObjectEx) |
| PropertyGetT |
Gets the value of the object property by name.
(Defined by ObjectEx) |
| PropertySet |
Sets the value of the object property by name.
(Defined by ObjectEx) |
See Also