Package graphql.schema

Class GraphQLScalarType

java.lang.Object

graphql.schema.GraphQLScalarType

All Implemented Interfaces:

GraphQLDirectiveContainer, GraphQLInputSchemaElement, GraphQLInputType, GraphQLNamedInputType, GraphQLNamedOutputType, GraphQLNamedSchemaElement, GraphQLNamedType, GraphQLNullableType, GraphQLOutputType, GraphQLSchemaElement, GraphQLType, GraphQLUnmodifiedType

@PublicApi
public class GraphQLScalarType
extends Object
implements GraphQLNamedInputType, GraphQLNamedOutputType, GraphQLUnmodifiedType, GraphQLNullableType, GraphQLDirectiveContainer

A scalar type is a leaf node in the graphql tree of types. This class allows you to define new scalar types.

GraphQL provides a number of built‐in scalars, but type systems can add additional scalars with semantic meaning, for example, a GraphQL system could define a scalar called Time which, while serialized as a string, promises to conform to ISO‐8601. When querying a field of type Time, you can then rely on the ability to parse the result with an ISO‐8601 parser and use a client‐specific primitive for time.

From the spec : https://spec.graphql.org/October2021/#sec-Scalars

graphql-java ships with a set of predefined scalar types via Scalars

See Also:

• Scalars

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	GraphQLScalarType.Builder

Field Summary

Fields inherited from interface graphql.schema.GraphQLDirectiveContainer

CHILD_APPLIED_DIRECTIVES, CHILD_DIRECTIVES

Method Summary

Modifier and Type	Method	Description
TraversalControl	accept(TraverserContext<GraphQLSchemaElement> context, GraphQLTypeVisitor visitor)
GraphQLSchemaElement	copy()	Each GraphQLSchemaElement should make a copy of itself when this is called.
final boolean	equals(Object o)	No GraphQLSchemaElement implements `equals` because we need object identity to treat a GraphQLSchema as an abstract graph.
Map<String,List<GraphQLAppliedDirective>>	getAllAppliedDirectivesByName()	This will return a Map of the all directives that are associated with a GraphQLNamedSchemaElement, including both repeatable and non-repeatable directives.
Map<String,List<GraphQLDirective>>	getAllDirectivesByName()	This will return a Map of the all directives that are associated with a GraphQLNamedSchemaElement, including both repeatable and non repeatable directives.
GraphQLAppliedDirective	getAppliedDirective(String directiveName)	Returns a non-repeatable directive with the provided name.
List<GraphQLAppliedDirective>	getAppliedDirectives()	This will return a list of all the directives that have been put on GraphQLNamedSchemaElement as a flat list, which may contain repeatable and non-repeatable directives.
List<GraphQLSchemaElement>	getChildren()
SchemaElementChildrenContainer	getChildrenWithTypeReferences()
Coercing<?,?>	getCoercing()
ScalarTypeDefinition	getDefinition()	The AST Node this schema element is based on.
String	getDescription()
GraphQLDirective	getDirective(String directiveName)	Returns a non-repeatable directive with the provided name.
List<GraphQLDirective>	getDirectives()	This will return a list of all the directives that have been put on GraphQLNamedSchemaElement as a flat list, which may contain repeatable and non-repeatable directives.
Map<String,GraphQLDirective>	getDirectivesByName()	This will return a Map of the non repeatable directives that are associated with a GraphQLNamedSchemaElement.
List<ScalarTypeExtensionDefinition>	getExtensionDefinitions()
String	getName()
String	getSpecifiedByUrl()
final int	hashCode()	No GraphQLSchemaElement implements `equals/hashCode` because we need object identity to treat a GraphQLSchema as an abstract graph.
static GraphQLScalarType.Builder	newScalar()
static GraphQLScalarType.Builder	newScalar(GraphQLScalarType existing)
String	toString()
GraphQLScalarType	transform(Consumer<GraphQLScalarType.Builder> builderConsumer)	This helps you transform the current GraphQLObjectType into another one by starting a builder with all the current values and allows you to transform it how you want.
GraphQLScalarType	withNewChildren(SchemaElementChildrenContainer newChildren)

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface graphql.schema.GraphQLDirectiveContainer

getAppliedDirectives, getDirectives, hasAppliedDirective, hasDirective

Method Details

getName

public String getName()

Specified by:

getName in interface GraphQLNamedSchemaElement

Returns:

the name of this element. This cant be null

getDescription

public String getDescription()

Specified by:

getDescription in interface GraphQLNamedSchemaElement

Returns:

the description of this element. This can be null

getSpecifiedByUrl

public String getSpecifiedByUrl()

getCoercing

public Coercing<?,?> getCoercing()

getDefinition

public ScalarTypeDefinition getDefinition()

Description copied from interface: GraphQLNamedSchemaElement

The AST Node this schema element is based on. Is null if the GraphQLSchema is not based on a SDL document. Some elements also have additional extension Nodes. See for example GraphQLObjectType.getExtensionDefinitions()

Specified by:

getDefinition in interface GraphQLNamedSchemaElement

Returns:

Node which this element is based on. Can be null.

getExtensionDefinitions

public List<ScalarTypeExtensionDefinition> getExtensionDefinitions()

getDirectives

public List<GraphQLDirective> getDirectives()

Description copied from interface: GraphQLDirectiveContainer

This will return a list of all the directives that have been put on GraphQLNamedSchemaElement as a flat list, which may contain repeatable and non-repeatable directives.

Specified by:

getDirectives in interface GraphQLDirectiveContainer

Returns:

a list of all the directives associated with this named schema element

getDirectivesByName

public Map<String,GraphQLDirective> getDirectivesByName()

Description copied from interface: GraphQLDirectiveContainer

This will return a Map of the non repeatable directives that are associated with a GraphQLNamedSchemaElement. Any repeatable directives will be filtered out of this map.

Specified by:

getDirectivesByName in interface GraphQLDirectiveContainer

Returns:

a map of non repeatable directives by directive name.

getAllDirectivesByName

public Map<String,List<GraphQLDirective>> getAllDirectivesByName()

Description copied from interface: GraphQLDirectiveContainer

This will return a Map of the all directives that are associated with a GraphQLNamedSchemaElement, including both repeatable and non repeatable directives.

Specified by:

getAllDirectivesByName in interface GraphQLDirectiveContainer

Returns:

a map of all directives by directive name

getDirective

public GraphQLDirective getDirective(String directiveName)

Description copied from interface: GraphQLDirectiveContainer

Returns a non-repeatable directive with the provided name. This will throw a AssertException if the directive is a repeatable directive that has more then one instance.

Specified by:

getDirective in interface GraphQLDirectiveContainer

Parameters:

directiveName - the name of the directive to retrieve

Returns:

the directive or null if there is not one with that name

getAppliedDirectives

public List<GraphQLAppliedDirective> getAppliedDirectives()

Description copied from interface: GraphQLDirectiveContainer

This will return a list of all the directives that have been put on GraphQLNamedSchemaElement as a flat list, which may contain repeatable and non-repeatable directives.

Specified by:

getAppliedDirectives in interface GraphQLDirectiveContainer

Returns:

a list of all the directives associated with this named schema element

getAllAppliedDirectivesByName

public Map<String,List<GraphQLAppliedDirective>> getAllAppliedDirectivesByName()

Description copied from interface: GraphQLDirectiveContainer

This will return a Map of the all directives that are associated with a GraphQLNamedSchemaElement, including both repeatable and non-repeatable directives.

Specified by:

getAllAppliedDirectivesByName in interface GraphQLDirectiveContainer

Returns:

a map of all directives by directive name

getAppliedDirective

public GraphQLAppliedDirective getAppliedDirective(String directiveName)

Description copied from interface: GraphQLDirectiveContainer

Returns a non-repeatable directive with the provided name.

Specified by:

getAppliedDirective in interface GraphQLDirectiveContainer

Parameters:

directiveName - the name of the directive to retrieve

Returns:

the directive or null if there is not one with that name

toString

public String toString()

Overrides:

toString in class Object

transform

public GraphQLScalarType transform(Consumer<GraphQLScalarType.Builder> builderConsumer)

This helps you transform the current GraphQLObjectType into another one by starting a builder with all the current values and allows you to transform it how you want.

Parameters:

builderConsumer - the consumer code that will be given a builder to transform

Returns:

a new object based on calling build on that builder

copy

public GraphQLSchemaElement copy()

Description copied from interface: GraphQLSchemaElement

Each GraphQLSchemaElement should make a copy of itself when this is called. The copy should be included its current contents as they currently exist into a new object.

Specified by:

copy in interface GraphQLSchemaElement

Returns:

a copy of this element

accept

public TraversalControl accept(TraverserContext<GraphQLSchemaElement> context,
 GraphQLTypeVisitor visitor)

Specified by:

accept in interface GraphQLSchemaElement

getChildren

public List<GraphQLSchemaElement> getChildren()

Specified by:

getChildren in interface GraphQLSchemaElement

getChildrenWithTypeReferences

public SchemaElementChildrenContainer getChildrenWithTypeReferences()

Specified by:

getChildrenWithTypeReferences in interface GraphQLSchemaElement

withNewChildren

public GraphQLScalarType withNewChildren(SchemaElementChildrenContainer newChildren)

Specified by:

withNewChildren in interface GraphQLSchemaElement

equals

public final boolean equals(Object o)

No GraphQLSchemaElement implements `equals` because we need object identity to treat a GraphQLSchema as an abstract graph.

Specified by:

equals in interface GraphQLSchemaElement

Overrides:

equals in class Object

Parameters:

o - the reference object with which to compare.

Returns:

true if this object is the same as the obj argument; false otherwise.

hashCode

public final int hashCode()

No GraphQLSchemaElement implements `equals/hashCode` because we need object identity to treat a GraphQLSchema as an abstract graph.

Specified by:

hashCode in interface GraphQLSchemaElement

Overrides:

hashCode in class Object

Returns:

a hash code value for this object.

newScalar

public static GraphQLScalarType.Builder newScalar()

newScalar

public static GraphQLScalarType.Builder newScalar(GraphQLScalarType existing)