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Add result transforming to bundled transformers
Adds result wrapping capability to the following generic transformers = TransformCompositeFields = TransformInterfaceFields = TransformObjectFields = TransformRootFields = ExtendSchema = MapFields Adds result visiting usage to the following transfromers = WrapFields = WrapType = HoistField Result visiting was introduced within RenameTypes within the initial commit.
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Original file line number | Diff line number | Diff line change |
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@@ -1,36 +1,74 @@ | ||
import { GraphQLSchema } from 'graphql'; | ||
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import { Transform, Request, FieldNodeMappers } from '@graphql-tools/utils'; | ||
import { Transform, Request, FieldNodeMappers, ExecutionResult } from '@graphql-tools/utils'; | ||
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import TransformCompositeFields from './TransformCompositeFields'; | ||
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import { ObjectValueTransformerMap, ErrorsTransformer } from '../types'; | ||
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export default class MapFields implements Transform { | ||
private readonly transformer: TransformCompositeFields; | ||
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constructor(fieldNodeTransformerMap: FieldNodeMappers) { | ||
constructor( | ||
fieldNodeTransformerMap: FieldNodeMappers, | ||
objectValueTransformerMap?: ObjectValueTransformerMap, | ||
errorsTransformer?: ErrorsTransformer | ||
) { | ||
this.transformer = new TransformCompositeFields( | ||
(_typeName, _fieldName, fieldConfig) => fieldConfig, | ||
(typeName, fieldName, fieldNode, fragments) => { | ||
(typeName, fieldName, fieldNode, fragments, context) => { | ||
const typeTransformers = fieldNodeTransformerMap[typeName]; | ||
if (typeTransformers == null) { | ||
return fieldNode; | ||
return undefined; | ||
} | ||
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const fieldNodeTransformer = typeTransformers[fieldName]; | ||
if (fieldNodeTransformer == null) { | ||
return fieldNode; | ||
return undefined; | ||
} | ||
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return fieldNodeTransformer(fieldNode, fragments); | ||
} | ||
return fieldNodeTransformer(fieldNode, fragments, context); | ||
}, | ||
objectValueTransformerMap != null | ||
? (data, context) => { | ||
if (data == null) { | ||
return data; | ||
} | ||
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const typeName = data.__typename; | ||
if (typeName == null) { | ||
return data; | ||
} | ||
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const transformer = objectValueTransformerMap[typeName]; | ||
if (transformer == null) { | ||
return data; | ||
} | ||
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return transformer(data, context); | ||
} | ||
: undefined, | ||
errorsTransformer != null ? errorsTransformer : undefined | ||
); | ||
} | ||
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public transformSchema(schema: GraphQLSchema): GraphQLSchema { | ||
return this.transformer.transformSchema(schema); | ||
} | ||
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public transformRequest(request: Request): Request { | ||
return this.transformer.transformRequest(request); | ||
public transformRequest( | ||
originalRequest: Request, | ||
delegationContext?: Record<string, any>, | ||
transformationContext?: Record<string, any> | ||
): Request { | ||
return this.transformer.transformRequest(originalRequest, delegationContext, transformationContext); | ||
} | ||
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public transformResult( | ||
originalResult: ExecutionResult, | ||
delegationContext?: Record<string, any>, | ||
transformationContext?: Record<string, any> | ||
): ExecutionResult { | ||
return this.transformer.transformResult(originalResult, delegationContext, transformationContext); | ||
} | ||
} |
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