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

Class DatastoreNativeTypes

java.lang.Object

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

public abstract class DatastoreNativeTypes
extends Object

A class to manage Datastore-specific simple type conversions.

Since:

1.1

Author:

Dmitry Solomakha, Chengyuan Zhao

Field Summary

Fields

Modifier and Type	Field and Description
static Set<Class<?>>	DATASTORE_NATIVE_TYPES The set of natively-supported Datastore types.
static org.springframework.data.mapping.model.SimpleTypeHolder	HOLDER A simple type holder that only contains the Cloud Datastore native data types.
static Set<Class<?>>	ID_TYPES The set of native ID types that Datastore supports.

Constructor Summary

Constructors

Constructor and Description
DatastoreNativeTypes()

Method Summary

Modifier and Type	Method and Description
static void	bindValueToGqlBuilder(com.google.cloud.datastore.GqlQuery.Builder builder, String tagName, Object val) Bind a given tag and value to a GQL query builder.
static boolean	isNativeType(Class aClass) Checks if a given type is a native type for Cloud Datastore.
static com.google.cloud.datastore.Value	wrapValue(Object propertyVal) Wraps Datastore native type to Datastore value type.

Methods inherited from class java.lang.Object

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

Field Detail

DATASTORE_NATIVE_TYPES

public static final Set<Class<?>> DATASTORE_NATIVE_TYPES

The set of natively-supported Datastore types.

ID_TYPES

public static final Set<Class<?>> ID_TYPES

The set of native ID types that Datastore supports.

HOLDER

public static final org.springframework.data.mapping.model.SimpleTypeHolder HOLDER

A simple type holder that only contains the Cloud Datastore native data types.

Constructor Detail

DatastoreNativeTypes

public DatastoreNativeTypes()

Method Detail

isNativeType

public static boolean isNativeType(Class aClass)

Checks if a given type is a native type for Cloud Datastore.

Parameters:

aClass - the class type to check

Returns:

`true` if the type is a native type, which includes `null`. `false` otherwise.

wrapValue

public static com.google.cloud.datastore.Value wrapValue(Object propertyVal)

Wraps Datastore native type to Datastore value type.

Parameters:

propertyVal - the property value to wrap

Returns:

the wrapped value

bindValueToGqlBuilder

public static void bindValueToGqlBuilder(com.google.cloud.datastore.GqlQuery.Builder builder,
                                         String tagName,
                                         Object val)

Bind a given tag and value to a GQL query builder.

Parameters:

builder - the builder holding a GQL query that is being built.

tagName - the name of the tag to bind.

val - the value to bind to the tag.