com.walmartlabs.lacinia.selection
added in 0.38.0
Protocols for selection-related objects accessible from the selection function, and as well as the schema type objects navigable to from the selection, or via select-type.
Arguments
protocol
Implemented by Directive.
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arguments
(arguments element)Returns a map of keyword name to argument value. May return nil if no arguments.
The value may reflect evaluated query variables or argument defaults.
Directive
protocol
Implements Arguments.
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directive-type
(directive-type d)Returns the type of directive as a keyword.
Directives
protocol
An element that may contain directives.
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directives
(directives element)Returns a map of directives for this element; keys are keywords identifying the directive, values are a seq of Directive of that type (directives are inherently repeatable).
May return nil.
FieldDef
protocol
A field within a TypeDef. Implements Type, Directives, ArgumentDefs, and QualifiedName.
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field-name
(field-name fs)Returns the name of the field (as an unqualified keyword).
Fields
protocol
Implemented by the :object and :interface TypeDef kinds to expose the type’s fields.
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FieldSelection
protocol
A SelectionSet that extracts a value from a field and records it into the result as a name or alias; for non-scalar types, may have sub-selections.
Also implements Arguments, and Directives.
Directives here are the directives on the selection (the executable directives); access the underlying field to get the type system directives.
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Kind
protocol
A Kind is a root type with qualifiers (list, or non-null). A root kind identifies a TypeDef. A Kind can be converted to a GraphQL type string.
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as-type-string
(as-type-string kind)Returns the kind as an GraphQL language string, e.g. [String!].
kind-type
(kind-type kind)One of :non-null, :list, or :root.
QualifiedName
protocol
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qualified-name
(qualified-name named)Returns a keyword whose namespace is the containing element; e.g., :User/idfor the id field of the User type.
SelectionSet
protocol
A selection that may contain sub-selections.
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selection-kind
(selection-kind selection)The type of selection: either :field, :inline-fragment or :named-fragment.
For :field, the FieldSelection protocol will also be implemented.
selections
(selections selection)Returns a seq of sub-selections (also SelectionSets) of this selection.
May be nil for a field that selects a scalar.
Type
protocol
For a typed element, such as a FieldDef or an ArgumentDef, details the schema type.
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TypeDef
protocol
A type defined in a GraphQL schema. Implements the Directives protocol as well.
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type-category
(type-category type)Returns the category of the type, one of: :object, :union, :interface, :scalar, or :enum.
type-name
(type-name type)Returns the name of the type, as a keyword.