org.springframework.data.mongodb.core.convert
Class DefaultMongoTypeMapper

java.lang.Object
  org.springframework.data.convert.DefaultTypeMapper<com.mongodb.DBObject>
      org.springframework.data.mongodb.core.convert.DefaultMongoTypeMapper

All Implemented Interfaces:

TypeMapper<com.mongodb.DBObject>, MongoTypeMapper

public class DefaultMongoTypeMapper
extends DefaultTypeMapper<com.mongodb.DBObject>
implements MongoTypeMapper

Default implementation of MongoTypeMapper allowing configuration of the key to lookup and store type information in DBObject. The key defaults to DEFAULT_TYPE_KEY. Actual type-to-String conversion and back is done in #getTypeString(TypeInformation) or #getTypeInformation(String) respectively.

Author:

Oliver Gierke, Thomas Darimont

Nested Class Summary

static class

DefaultMongoTypeMapper.DBObjectTypeAliasAccessor TypeAliasAccessor to store aliases in a DBObject.

Field Summary

static String

DEFAULT_TYPE_KEY

Constructor Summary

DefaultMongoTypeMapper()

DefaultMongoTypeMapper(String typeKey)

DefaultMongoTypeMapper(String typeKey, List<? extends TypeInformationMapper> mappers)

DefaultMongoTypeMapper(String typeKey, MappingContext<? extends PersistentEntity<?,?>,?> mappingContext)

Method Summary

protected TypeInformation<?>	getFallbackTypeFor(com.mongodb.DBObject source)
boolean	isTypeKey(String key) Returns whether the given key is the type key.
void	writeTypeRestrictions(com.mongodb.DBObject result, Set<Class<?>> restrictedTypes) Writes type restrictions to the given DBObject.

Methods inherited from class org.springframework.data.convert.DefaultTypeMapper

getAliasFor, readType, readType, writeType, writeType

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.data.convert.TypeMapper

readType, readType, writeType, writeType

Field Detail

DEFAULT_TYPE_KEY

public static final String DEFAULT_TYPE_KEY

See Also:

Constant Field Values

Constructor Detail

DefaultMongoTypeMapper

public DefaultMongoTypeMapper()

DefaultMongoTypeMapper

public DefaultMongoTypeMapper(String typeKey)

DefaultMongoTypeMapper

public DefaultMongoTypeMapper(String typeKey,
                              MappingContext<? extends PersistentEntity<?,?>,?> mappingContext)

DefaultMongoTypeMapper

public DefaultMongoTypeMapper(String typeKey,
                              List<? extends TypeInformationMapper> mappers)

Method Detail

isTypeKey

public boolean isTypeKey(String key)

Description copied from interface: MongoTypeMapper

Returns whether the given key is the type key.

Specified by:

isTypeKey in interface MongoTypeMapper

Returns:

writeTypeRestrictions

public void writeTypeRestrictions(com.mongodb.DBObject result,
                                  Set<Class<?>> restrictedTypes)

Description copied from interface: MongoTypeMapper

Writes type restrictions to the given DBObject. This usually results in an $in-clause to be generated that restricts the type-key (e.g. _class) to be in the set of type aliases for the given restrictedTypes.

Specified by:

writeTypeRestrictions in interface MongoTypeMapper

Parameters:

result - must not be null

restrictedTypes - must not be null

getFallbackTypeFor

protected TypeInformation<?> getFallbackTypeFor(com.mongodb.DBObject source)

Overrides:

getFallbackTypeFor in class DefaultTypeMapper<com.mongodb.DBObject>