FireDAC.Phys.MongoDBWrapper.TMongoSelector
Delphi
TMongoSelector = class(TObject)
C++
class PASCALIMPLEMENTATION TMongoSelector : public System::TObject
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| class | public | FireDAC.Phys.MongoDBWrapper.pas FireDAC.Phys.MongoDBWrapper.hpp |
FireDAC.Phys.MongoDBWrapper | FireDAC.Phys.MongoDBWrapper |
Description
Builder for a MongoDB selector, a query expression to filter a list of collections or the documents of a collection.
You can pass a selector builder to TMongoDatabase.ListCollections or TMongoCollection.Remove.
When you use TMongoSelector to select documents to remove from a collection, you must use TMongoSelector in combination with TMongoCollection.Remove. To work with these members, you can use two different coding styles.
Use Match to define the selection criteria of the selection document.
If you use TMongoSelector in combination with TMongoCollection.Remove and you use a fluent coding style, use Exec to execute the removal operation.