Package io.smallrye.graphql.execution.datafetcher

Class FieldDataFetcher<T>

java.lang.Object

io.smallrye.graphql.execution.datafetcher.FieldDataFetcher<T>

Type Parameters:

T -

All Implemented Interfaces:

graphql.schema.DataFetcher<T>, graphql.TrivialDataFetcher<T>, PlugableDataFetcher<T>

public class FieldDataFetcher<T>
extends Object
implements PlugableDataFetcher<T>, graphql.TrivialDataFetcher<T>

Custom property data fetcher to allow arbitrary method names (instead of getters/setters) and to intercept the result for some manipulation.

Implementation Note:

If the (graphql-) field has no methodName, a FieldDataFetcher.FieldAccessor for the (java-) field is is created. Otherwise, a FieldDataFetcher.MethodAccessor is created for the accessor method.

The owner is used to create the FieldDataFetcher.PropertyAccessor independently of the source object (which could be a different subtype of the owner class for each call).

Constructor Summary

Constructors

Constructor	Description
FieldDataFetcher(io.smallrye.graphql.schema.model.Field field, io.smallrye.graphql.schema.model.Type type, io.smallrye.graphql.schema.model.Reference owner)

Method Summary

Modifier and Type	Method	Description
T	get(graphql.schema.DataFetchingEnvironment dfe)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

FieldDataFetcher

public FieldDataFetcher(io.smallrye.graphql.schema.model.Field field,
 io.smallrye.graphql.schema.model.Type type,
 io.smallrye.graphql.schema.model.Reference owner)

Method Details

get

public T get(graphql.schema.DataFetchingEnvironment dfe)
      throws Exception

Specified by:

get in interface graphql.schema.DataFetcher<T>

Throws:

Exception