com.daikit.graphql.datafetcher

Class GQLDataFetcherUtils

java.lang.Object

com.daikit.graphql.datafetcher.GQLDataFetcherUtils

public abstract class GQLDataFetcherUtils
extends Object

GraphQL data fetcher utility class

Author:

Thibaut Caselli

Constructor Summary

Constructors

Constructor and Description
GQLDataFetcherUtils()

Method Summary

Modifier and Type	Method and Description
static Map<String,Object>	convertObjectValue(graphql.language.ObjectValue objectValue, Map<String,Object> arguments, Collection<String> providedVariableNames) Convert GQL object value to a Map
static Map<String,Object>	getArgumentsForContext(Map<String,Object> arguments, String argumentContext) Get arguments with given property name within parent's arguments map
static List<Map<String,Object>>	getArgumentsForContextAsList(Map<String,Object> arguments, String argumentContext) Get arguments with given property name within parent's arguments map as a List
static Object	getArgumentValue(graphql.language.Field queryField, String name, Map<String,Object> arguments, Collection<String> providedVariableNames) Get argument by name within given query field
static String	getEntityName(String prefix, String queryName) Get entity by name
static <T> T	mapValue(graphql.language.Argument argument, Map<String,Object> arguments, Collection<String> providedVariableNames) Map GQL argument value to an object
static <T> T	mapValue(graphql.language.ObjectField field, Map<String,Object> arguments, Collection<String> providedVariableNames) Map GQL object field value to an object

Methods inherited from class java.lang.Object

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

Constructor Detail

GQLDataFetcherUtils

public GQLDataFetcherUtils()

Method Detail

getEntityName

public static String getEntityName(String prefix,
                                   String queryName)

Get entity by name

Parameters:

prefix - the entity prefix

queryName - the query name

Returns:

the entity name

mapValue

public static <T> T mapValue(graphql.language.ObjectField field,
                             Map<String,Object> arguments,
                             Collection<String> providedVariableNames)

Map GQL object field value to an object

Type Parameters:

T - the value type

Parameters:

field - the GQL ObjectField

arguments - the map of query arguments for potential replacements

providedVariableNames - names of provided variables for the request

Returns:

a mapped object value

mapValue

public static <T> T mapValue(graphql.language.Argument argument,
                             Map<String,Object> arguments,
                             Collection<String> providedVariableNames)

Map GQL argument value to an object

Type Parameters:

T - the value type

Parameters:

argument - the GQL Argument

arguments - the map of query arguments for potential replacements

providedVariableNames - names of provided variables for the request

Returns:

a mapped object value

getArgumentsForContext

public static Map<String,Object> getArgumentsForContext(Map<String,Object> arguments,
                                                        String argumentContext)

Get arguments with given property name within parent's arguments map

Parameters:

arguments - the parent's arguments map

argumentContext - the argument context name

Returns:

a Map (may be empty)

getArgumentsForContextAsList

public static List<Map<String,Object>> getArgumentsForContextAsList(Map<String,Object> arguments,
                                                                    String argumentContext)

Get arguments with given property name within parent's arguments map as a List

Parameters:

arguments - the parent's arguments map

argumentContext - the argument context name

Returns:

a List of Map (may be empty)

convertObjectValue

public static Map<String,Object> convertObjectValue(graphql.language.ObjectValue objectValue,
                                                    Map<String,Object> arguments,
                                                    Collection<String> providedVariableNames)

Convert GQL object value to a Map

Parameters:

objectValue - the ObjectValue

arguments - the Map of arguments

providedVariableNames - names of provided variables for the request

Returns:

the converted map

getArgumentValue

public static Object getArgumentValue(graphql.language.Field queryField,
                                      String name,
                                      Map<String,Object> arguments,
                                      Collection<String> providedVariableNames)

Get argument by name within given query field

Parameters:

queryField - the query Field

name - then argument name

arguments - the Map of arguments

providedVariableNames - names of provided variables for the request

Returns:

the argument value