Package org.springframework.data.mongodb.core.convert

Class UpdateMapper

java.lang.Object

org.springframework.data.mongodb.core.convert.QueryMapper

org.springframework.data.mongodb.core.convert.UpdateMapper

public class UpdateMapper
extends QueryMapper

A subclass of QueryMapper that retains type information on the mongo types.

Author:

Thomas Darimont, Oliver Gierke, Christoph Strobl, Mark Paluch

Nested Class Summary

Nested classes/interfaces inherited from class org.springframework.data.mongodb.core.convert.QueryMapper

QueryMapper.AssociationConverter, QueryMapper.Field, QueryMapper.MetadataBackedField

Field Summary

Fields inherited from class org.springframework.data.mongodb.core.convert.QueryMapper

LOGGER

Constructor Summary

Constructors

Constructor	Description
UpdateMapper(MongoConverter converter)	Creates a new UpdateMapper using the given MongoConverter.

Method Summary

Modifier and Type	Method	Description
protected QueryMapper.Field	createPropertyField(MongoPersistentEntity<?> entity, String key, MappingContext<? extends MongoPersistentEntity<?>,MongoPersistentProperty> mappingContext)
protected Object	delegateConvertToMongoType(Object source, MongoPersistentEntity<?> entity)	Converts the given source object to a mongo type retaining the original type information of the source type on the mongo type.
org.bson.Document	getMappedObject(org.bson.conversions.Bson query, MongoPersistentEntity<?> entity)	Replaces the property keys used in the given Document with the appropriate keys by using the PersistentEntity metadata.
protected Map.Entry<String,Object>	getMappedObjectForField(QueryMapper.Field field, Object rawValue)	Extracts the mapped object value for given field out of rawValue taking nested QueryMapper.Keywords into account
protected boolean	isAssociationConversionNecessary(QueryMapper.Field documentField, Object value)	Returns whether the given QueryMapper.Field represents an association reference that together with the given value requires conversion to a DBRef object.
static boolean	isUpdateObject(org.bson.Document updateObj)	Returns true if the given Document is an update object that uses update operators.

Methods inherited from class org.springframework.data.mongodb.core.convert.QueryMapper

addMetaAttributes, convertAssociation, convertAssociation, convertId, convertId, convertSimpleOrDocument, createMapEntry, getConverter, getMappedFields, getMappedKeyword, getMappedKeyword, getMappedObject, getMappedSort, getMappedValue, getMappingContext, isDBObject, isDocument, isKeyword, isNestedKeyword, isTypeKey

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

UpdateMapper

public UpdateMapper(MongoConverter converter)

Creates a new UpdateMapper using the given MongoConverter.

Parameters:

converter - must not be null.

Method Details

getMappedObject

public org.bson.Document getMappedObject(org.bson.conversions.Bson query,
 @Nullable
 MongoPersistentEntity<?> entity)

Description copied from class: QueryMapper

Replaces the property keys used in the given Document with the appropriate keys by using the PersistentEntity metadata.

Overrides:

getMappedObject in class QueryMapper

Parameters:

query - must not be null.

entity - can be null.

Returns:

isUpdateObject

public static boolean isUpdateObject(@Nullable
 org.bson.Document updateObj)

Returns true if the given Document is an update object that uses update operators.

Parameters:

updateObj - can be null.

Returns:

true if the given Document is an update object.

delegateConvertToMongoType

protected Object delegateConvertToMongoType(Object source,
 @Nullable
 MongoPersistentEntity<?> entity)

Converts the given source object to a mongo type retaining the original type information of the source type on the mongo type.

Overrides:

delegateConvertToMongoType in class QueryMapper

Returns:

the converted mongo type or null if source is null

See Also:

• QueryMapper.delegateConvertToMongoType(java.lang.Object, org.springframework.data.mongodb.core.mapping.MongoPersistentEntity)

getMappedObjectForField

protected Map.Entry<String,Object> getMappedObjectForField(QueryMapper.Field field,
 Object rawValue)

Description copied from class: QueryMapper

Extracts the mapped object value for given field out of rawValue taking nested QueryMapper.Keywords into account

Overrides:

getMappedObjectForField in class QueryMapper

Returns:

isAssociationConversionNecessary

protected boolean isAssociationConversionNecessary(QueryMapper.Field documentField,
 @Nullable
 Object value)

Description copied from class: QueryMapper

Returns whether the given QueryMapper.Field represents an association reference that together with the given value requires conversion to a DBRef object. We check whether the type of the given value is compatible with the type of the given document field in order to deal with potential query field exclusions, since MongoDB uses the int 0 as an indicator for an excluded field.

Overrides:

isAssociationConversionNecessary in class QueryMapper

Parameters:

documentField - must not be null.

Returns:

createPropertyField

protected QueryMapper.Field createPropertyField(MongoPersistentEntity<?> entity,
 String key,
 MappingContext<? extends MongoPersistentEntity<?>,MongoPersistentProperty> mappingContext)

Overrides:

createPropertyField in class QueryMapper

Returns: