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32 changes: 32 additions & 0 deletions
32
src/main/scala/sangria/schema/transformations/FieldFilteredAstSchemaBuilder.scala
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package sangria.schema.transformations | ||
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import sangria.ast | ||
import sangria.ast.InterfaceTypeExtensionDefinition | ||
import sangria.schema.{AstSchemaMaterializer, DefaultAstSchemaBuilder, Field, InterfaceType, MatOrigin, ObjectType} | ||
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class FieldFilteredAstSchemaBuilder[Ctx](filter: List[Field[Ctx, Any]] => List[Field[Ctx, Any]]) extends DefaultAstSchemaBuilder[Ctx] { | ||
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override def extendObjectType( | ||
origin: MatOrigin, | ||
existing: ObjectType[Ctx, _], | ||
extensions: List[ast.ObjectTypeExtensionDefinition], | ||
fields: () ⇒ List[Field[Ctx, Any]], | ||
interfaces: List[InterfaceType[Ctx, Any]], | ||
mat: AstSchemaMaterializer[Ctx]): ObjectType[Ctx, Any] = { | ||
super.extendObjectType(origin, existing, extensions, applyFilter(fields), interfaces, mat) | ||
} | ||
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override def extendInterfaceType(origin: MatOrigin, | ||
existing: InterfaceType[Ctx, _], | ||
extensions: List[InterfaceTypeExtensionDefinition], | ||
fields: () => List[Field[Ctx, Any]], | ||
mat: AstSchemaMaterializer[Ctx]): InterfaceType[Ctx, Any] = { | ||
super.extendInterfaceType(origin, existing, extensions, applyFilter(fields), mat) | ||
} | ||
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def applyFilter(fieldsFn: () => List[Field[Ctx, Any]]): () => List[Field[Ctx, Any]] = { | ||
() => filter(fieldsFn()) | ||
} | ||
} | ||
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21 changes: 21 additions & 0 deletions
21
src/main/scala/sangria/schema/transformations/TransformSchema.scala
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package sangria.schema.transformations | ||
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import sangria.ast.{Document, ObjectTypeExtensionDefinition} | ||
import sangria.schema.{AstSchemaMaterializer, Field, Schema} | ||
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object TransformSchema { | ||
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def filterFields[Ctx, Val](schema: Schema[Ctx, Val], filter: List[Field[Ctx, Any]] => List[Field[Ctx, Any]]): Schema[Ctx, Val] = { | ||
AstSchemaMaterializer.extendSchema( | ||
schema, | ||
emptyExtensionDocument(schema.query.name), | ||
new FieldFilteredAstSchemaBuilder[Ctx](filter) | ||
) | ||
} | ||
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private def emptyExtensionDocument(queryName: String): Document = { | ||
Document(Vector( | ||
ObjectTypeExtensionDefinition(queryName, Vector.empty, Vector.empty) | ||
)) | ||
} | ||
} |
37 changes: 37 additions & 0 deletions
37
src/test/scala/sangria/schema/SchemaTransformationSpec.scala
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package sangria.schema | ||
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import org.scalatest.{Matchers, WordSpec} | ||
import sangria.macros._ | ||
import sangria.renderer.SchemaRenderer | ||
import sangria.util.{FutureResultSupport, StringMatchers} | ||
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class SchemaTransformationSpec extends WordSpec with Matchers with FutureResultSupport with StringMatchers { | ||
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private val testSchema = Schema.buildFromAst(graphql""" | ||
type Query { | ||
someObject: SomeObject | ||
} | ||
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interface SomeInterface { | ||
publicInterfaceField: String | ||
privateInterfaceField: String | ||
} | ||
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type SomeObject implements SomeInterface { | ||
privateObjectField: String | ||
publicObjectField: String | ||
} | ||
""") | ||
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"filterFields" should { | ||
"filter fields on ObjectTypes" in { | ||
val filteredSchema = testSchema.filterFields(_.filterNot(_.name == "privateObjectField")) | ||
SchemaRenderer.renderSchema(filteredSchema) should not include "privateObjectField" | ||
} | ||
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"filter fields on Interfaces" in { | ||
val filteredSchema = testSchema.filterFields(_.filterNot(_.name == "privateInterfaceField")) | ||
SchemaRenderer.renderSchema(filteredSchema) should not include "privateInterfaceField" | ||
} | ||
} | ||
} |