Package dev.morphia.query

Interface QueryFactory

All Known Implementing Classes:

AbstractQueryFactory, DefaultQueryFactory, LegacyQueryFactory

public interface QueryFactory

A factory for queries.

See Also:

Query

Method Summary

Modifier and Type	Method	Description
default <T> Query<T>	createQuery(Datastore datastore)	Deprecated, for removal: This API element is subject to removal in a future version. this method is no longer used
default <T> Query<T>	createQuery(Datastore datastore, Class<T> type)	Creates a new query for the given type.
<T> Query<T>	createQuery(Datastore datastore, Class<T> type, Document query)	Creates and returns a Query for the given arguments.
<T> Query<T>	createQuery(Datastore datastore, String collection, Class<T> type)	Creates and returns a Query for the given arguments.

Method Detail

createQuery

default <T> Query<T> createQuery(Datastore datastore,
                                 Class<T> type)

Creates a new query for the given type.

Type Parameters:

T - the query type

Parameters:

datastore - the datastore

type - the query type

Returns:

the new query

createQuery

<T> Query<T> createQuery(Datastore datastore,
                         Class<T> type,
                         @Nullable
                         Document query)

Creates and returns a Query for the given arguments. The last argument is optional and may be null.

Type Parameters:

T - the type of the result

Parameters:

datastore - the Datastore to use

type - the type of the result

query - the Document containing the query structure

Returns:

the query

createQuery

<T> Query<T> createQuery(Datastore datastore,
                         String collection,
                         Class<T> type)

Creates and returns a Query for the given arguments. Default implementations of this method will simply delegate to createQuery(Datastore, Class) with the last argument being null.

Type Parameters:

T - the type of the result

Parameters:

datastore - the Datastore to use

collection - the actual collection to query. This overrides any mapped on collection on type.

type - the type of the result

Returns:

the query

See Also:

createQuery(Datastore, Class)

createQuery

@Deprecated(forRemoval=true)
default <T> Query<T> createQuery(Datastore datastore)

Deprecated, for removal: This API element is subject to removal in a future version.

this method is no longer used

Creates an unvalidated Query typically for use in aggregation pipelines.

Type Parameters:

T - the type of the result

Parameters:

datastore - the Datastore to use

Returns:

the query