java.lang.Object
- graphql.schema.GraphQLFieldDefinition

All Implemented Interfaces:

GraphQLDirectiveContainer, GraphQLNamedSchemaElement, GraphQLSchemaElement
```
@PublicApi
public class GraphQLFieldDefinition
extends java.lang.Object
implements GraphQLNamedSchemaElement, GraphQLDirectiveContainer
```
Fields are the ways you get data values in graphql and a field definition represents a field, its type, the arguments it takes and the DataFetcher used to get data values for that field.
Fields can be thought of as functions in graphql, they have a name, take defined arguments and return a value.
Fields can also be deprecated, which indicates the consumers that a field wont be supported in the future.
See http://graphql.org/learn/queries/#fields for more details on the concept.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class GraphQLFieldDefinition.Builder

Field Summary

Fields
Modifier and Type Field Description

static java.lang.String CHILD_ARGUMENTS

static java.lang.String CHILD_TYPE
- Fields inherited from interface graphql.schema.GraphQLDirectiveContainer
  CHILD_APPLIED_DIRECTIVES, CHILD_DIRECTIVES

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
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.
`boolean`	`equals(java.lang.Object o)`	No GraphQLSchemaElement implements `equals` because we need object identity to treat a GraphQLSchema as an abstract graph.
`java.util.Map<java.lang.String,java.util.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.
`java.util.Map<java.lang.String,java.util.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(java.lang.String directiveName)`	Returns a non-repeatable directive with the provided name.
`java.util.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.
`GraphQLArgument`	`getArgument(java.lang.String name)`
`java.util.List<GraphQLArgument>`	`getArguments()`
`java.util.List<GraphQLSchemaElement>`	`getChildren()`
`SchemaElementChildrenContainer`	`getChildrenWithTypeReferences()`
`FieldDefinition`	`getDefinition()`	The AST `Node` this schema element is based on.
`java.lang.String`	`getDeprecationReason()`
`java.lang.String`	`getDescription()`
`GraphQLDirective`	`getDirective(java.lang.String directiveName)`	Returns a non-repeatable directive with the provided name.
`java.util.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.
`java.util.Map<java.lang.String,GraphQLDirective>`	`getDirectivesByName()`	This will return a Map of the non repeatable directives that are associated with a `GraphQLNamedSchemaElement`.
`java.lang.String`	`getName()`
`GraphQLOutputType`	`getType()`
`int`	`hashCode()`	No GraphQLSchemaElement implements `equals/hashCode` because we need object identity to treat a GraphQLSchema as an abstract graph.
`boolean`	`isDeprecated()`
`static GraphQLFieldDefinition.Builder`	`newFieldDefinition()`
`static GraphQLFieldDefinition.Builder`	`newFieldDefinition(GraphQLFieldDefinition existing)`
`java.lang.String`	`toString()`
`GraphQLFieldDefinition`	`transform(java.util.function.Consumer<GraphQLFieldDefinition.Builder> builderConsumer)`	This helps you transform the current GraphQLFieldDefinition into another one by starting a builder with all the current values and allows you to transform it how you want.
`GraphQLSchemaElement`	`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

- Field Detail
  - CHILD_ARGUMENTS
```
public static final java.lang.String CHILD_ARGUMENTS
```
    See Also:
    
    Constant Field Values
  - CHILD_TYPE
```
public static final java.lang.String CHILD_TYPE
```
    See Also:
    
    Constant Field Values
- Method Detail
  - getName
```
public java.lang.String getName()
```
    Specified by:
    
    getName in interface GraphQLNamedSchemaElement
    
    Returns:
    
    the name of this element. This cant be null
  - getType
```
public GraphQLOutputType getType()
```
  - getArgument
```
public GraphQLArgument getArgument(java.lang.String name)
```
  - getDirectives
```
public java.util.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 java.util.Map<java.lang.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 java.util.Map<java.lang.String,java.util.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(java.lang.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 java.util.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 java.util.Map<java.lang.String,java.util.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(java.lang.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
  - getArguments
```
public java.util.List<GraphQLArgument> getArguments()
```
  - getDescription
```
public java.lang.String getDescription()
```
    Specified by:
    
    getDescription in interface GraphQLNamedSchemaElement
    
    Returns:
    
    the description of this element. This can be null
  - getDefinition
```
public FieldDefinition 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.
  - getDeprecationReason
```
public java.lang.String getDeprecationReason()
```
  - isDeprecated
```
public boolean isDeprecated()
```
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - transform
```
public GraphQLFieldDefinition transform(java.util.function.Consumer<GraphQLFieldDefinition.Builder> builderConsumer)
```
    This helps you transform the current GraphQLFieldDefinition 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 field 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 java.util.List<GraphQLSchemaElement> getChildren()
```
    Specified by:
    
    getChildren in interface GraphQLSchemaElement
  - getChildrenWithTypeReferences
```
public SchemaElementChildrenContainer getChildrenWithTypeReferences()
```
    Specified by:
    
    getChildrenWithTypeReferences in interface GraphQLSchemaElement
  - withNewChildren
```
public GraphQLSchemaElement withNewChildren(SchemaElementChildrenContainer newChildren)
```
    Specified by:
    
    withNewChildren in interface GraphQLSchemaElement
  - equals
```
public final boolean equals(java.lang.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 java.lang.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 java.lang.Object
    
    Returns:
    
    a hash code value for this object.
  - newFieldDefinition
```
public static GraphQLFieldDefinition.Builder newFieldDefinition(GraphQLFieldDefinition existing)
```
  - newFieldDefinition
```
public static GraphQLFieldDefinition.Builder newFieldDefinition()
```

Modifier and Type	Field	Description
`static java.lang.String`	`CHILD_ARGUMENTS`
`static java.lang.String`	`CHILD_TYPE`

Class GraphQLFieldDefinition

Nested Class Summary

Field Summary

Fields inherited from interface graphql.schema.GraphQLDirectiveContainer

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface graphql.schema.GraphQLDirectiveContainer

Field Detail

CHILD_ARGUMENTS

CHILD_TYPE

Method Detail

getName

getType

getArgument

getDirectives

getDirectivesByName

getAllDirectivesByName

getDirective

getAppliedDirectives

getAllAppliedDirectivesByName

getAppliedDirective

getArguments

getDescription

getDefinition

getDeprecationReason

isDeprecated

toString

transform

copy

accept

getChildren

getChildrenWithTypeReferences

withNewChildren

equals

hashCode

newFieldDefinition

newFieldDefinition