org.springframework.cloud.gcp.data.datastore.core.convert

Interface DatastoreEntityConverter

All Superinterfaces:

org.springframework.data.convert.EntityReader<Object,BaseEntity>, org.springframework.data.convert.EntityWriter<Object,BaseEntity.Builder>

All Known Implementing Classes:

DefaultDatastoreEntityConverter

public interface DatastoreEntityConverter
extends org.springframework.data.convert.EntityReader<Object,BaseEntity>, org.springframework.data.convert.EntityWriter<Object,BaseEntity.Builder>

An interface for converting objects to Datastore Entities and vice versa.

Since:

1.1

Author:

Chengyuan Zhao

Method Summary

Modifier and Type	Method and Description
ReadWriteConversions	getConversions() Get the ReadWriteConversions used in this converter.
<T,R> Map<T,R>	readAsMap(BaseEntity entity, org.springframework.data.util.TypeInformation mapTypeInformation) Read the entity as a Map.
<T,R> Map<T,R>	readAsMap(Class<T> keyType, org.springframework.data.util.TypeInformation<R> componentType, BaseEntity entity) Read the entity as a Map when the map type is unknown.

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

read

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

write

Method Detail

getConversions

ReadWriteConversions getConversions()

Get the ReadWriteConversions used in this converter.

Returns:

the conversions used.

readAsMap

<T,R> Map<T,R> readAsMap(BaseEntity entity,
                         org.springframework.data.util.TypeInformation mapTypeInformation)

Read the entity as a Map.

Type Parameters:

T - the type of the key in the map

R - the type of the value in the map

Parameters:

entity - the entity from Cloud Datastore.

mapTypeInformation - the actual type of the map

Returns:

a Map where the key values are the field names and the values the field values.

readAsMap

<T,R> Map<T,R> readAsMap(Class<T> keyType,
                         org.springframework.data.util.TypeInformation<R> componentType,
                         BaseEntity entity)

Read the entity as a Map when the map type is unknown.

Type Parameters:

T - the type of the key in the map

R - the type of the value in the map

Parameters:

keyType - the key type of the map to be read.

componentType - the value type of the map, into which each field value will be converted.

entity - the entity from Cloud Datastore.

Returns:

a Map where the key values are the field names and the values the field values.