T - the type of the distinct valuepublic class DistinctOperation<T> extends Object implements AsyncReadOperation<AsyncBatchCursor<T>>, ReadOperation<BatchCursor<T>>
When possible, the distinct command uses an index to find documents and return values.
| Constructor and Description | 
|---|
| DistinctOperation(MongoNamespace namespace,
                 String fieldName,
                 Decoder<T> decoder)Construct an instance. | 
| Modifier and Type | Method and Description | 
|---|---|
| DistinctOperation<T> | collation(Collation collation)Sets the collation options | 
| BatchCursor<T> | execute(ReadBinding binding)General execute which can return anything of type T | 
| void | executeAsync(AsyncReadBinding binding,
            SingleResultCallback<AsyncBatchCursor<T>> callback)General execute which can return anything of type T | 
| DistinctOperation<T> | filter(BsonDocument filter)Sets the query filter to apply to the query. | 
| Collation | getCollation()Returns the collation options | 
| BsonDocument | getFilter()Gets the query filter. | 
| long | getMaxTime(TimeUnit timeUnit)Gets the maximum execution time on the server for this operation. | 
| ReadConcern | getReadConcern()Gets the read concern | 
| DistinctOperation<T> | maxTime(long maxTime,
       TimeUnit timeUnit)Sets the maximum execution time on the server for this operation. | 
| DistinctOperation<T> | readConcern(ReadConcern readConcern)Sets the read concern | 
public DistinctOperation(MongoNamespace namespace, String fieldName, Decoder<T> decoder)
namespace - the database and collection namespace for the operation.fieldName - the name of the field to return distinct values.decoder - the decoder for the result documents.public BsonDocument getFilter()
public DistinctOperation<T> filter(BsonDocument filter)
filter - the query filter, which may be null.public long getMaxTime(TimeUnit timeUnit)
timeUnit - the time unit to return the result inpublic DistinctOperation<T> maxTime(long maxTime, TimeUnit timeUnit)
maxTime - the max timetimeUnit - the time unit, which may not be nullpublic ReadConcern getReadConcern()
public DistinctOperation<T> readConcern(ReadConcern readConcern)
readConcern - the read concernpublic Collation getCollation()
public DistinctOperation<T> collation(Collation collation)
A null value represents the server default.
collation - the collation options to usepublic BatchCursor<T> execute(ReadBinding binding)
ReadOperationexecute in interface ReadOperation<BatchCursor<T>>binding - the binding to execute in the context ofpublic void executeAsync(AsyncReadBinding binding, SingleResultCallback<AsyncBatchCursor<T>> callback)
AsyncReadOperationexecuteAsync in interface AsyncReadOperation<AsyncBatchCursor<T>>binding - the binding to execute in the context ofcallback - the callback to be called when the operation has been executed