Add missing autoconfig for Query By Example

See gh-191

graphql-spring-boot-starter/src/main/java/org/springframework/graphql/boot/data/GraphQlWebFluxQueryByExampleAutoConfiguration.java

@@ -0,0 +1,70 @@
+/*
+ * Copyright 2002-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.graphql.boot.data;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import graphql.GraphQL;
+
+import org.springframework.beans.factory.ObjectProvider;
+import org.springframework.boot.autoconfigure.AutoConfigureAfter;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.repository.query.ReactiveQueryByExampleExecutor;
+import org.springframework.graphql.boot.GraphQlAutoConfiguration;
+import org.springframework.graphql.boot.GraphQlSourceBuilderCustomizer;
+import org.springframework.graphql.data.query.QueryByExampleDataFetcher;
+import org.springframework.graphql.execution.GraphQlSource;
+
+/**
+ * {@link EnableAutoConfiguration Auto-configuration} that creates a
+ * {@link GraphQlSourceBuilderCustomizer}s to detect Spring Data repositories
+ * with Query By Example support and register them as {@code DataFetcher}s for any
+ * queries with a matching return type.
+ *
+ * @author Rossen Stoyanchev
+ * @since 1.0.0
+ * @see QueryByExampleDataFetcher#autoRegistrationTypeVisitor(List, List)
+ */
+@Configuration(proxyBeanMethods = false)
+@ConditionalOnWebApplication(type = ConditionalOnWebApplication.Type.REACTIVE)
+@ConditionalOnClass({GraphQL.class, ReactiveQueryByExampleExecutor.class })
+@ConditionalOnBean(GraphQlSource.class)
+@AutoConfigureAfter(GraphQlAutoConfiguration.class)
+public class GraphQlWebFluxQueryByExampleAutoConfiguration {
+
+	@Bean
+	public GraphQlSourceBuilderCustomizer reactiveQueryByExampleRegistrar(
+			ObjectProvider<ReactiveQueryByExampleExecutor<?>> executorsProvider) {
+
+		return builder -> {
+			List<ReactiveQueryByExampleExecutor<?>> executors =
+					executorsProvider.stream().collect(Collectors.toList());
+
+			if (!executors.isEmpty()) {
+				builder.typeVisitors(Collections.singletonList(
+						QueryByExampleDataFetcher.autoRegistrationTypeVisitor(Collections.emptyList(), executors)));
+			}
+		};
+	}
+
+}

graphql-spring-boot-starter/src/main/java/org/springframework/graphql/boot/data/GraphQlWebFluxQuerydslAutoConfiguration.java

@@ -49,7 +49,7 @@ import org.springframework.graphql.execution.GraphQlSource;
  */
 @Configuration(proxyBeanMethods = false)
 @ConditionalOnWebApplication(type = ConditionalOnWebApplication.Type.REACTIVE)
-@ConditionalOnClass({GraphQL.class, QuerydslPredicateExecutor.class })
+@ConditionalOnClass({GraphQL.class, ReactiveQuerydslPredicateExecutor.class })
 @ConditionalOnBean(GraphQlSource.class)
 @AutoConfigureAfter(GraphQlAutoConfiguration.class)
 public class GraphQlWebFluxQuerydslAutoConfiguration {

graphql-spring-boot-starter/src/main/java/org/springframework/graphql/boot/data/GraphQlWebMvcQueryByExampleAutoConfiguration.java

@@ -0,0 +1,75 @@
+/*
+ * Copyright 2002-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.graphql.boot.data;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import graphql.GraphQL;
+
+import org.springframework.beans.factory.ObjectProvider;
+import org.springframework.boot.autoconfigure.AutoConfigureAfter;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.repository.query.QueryByExampleExecutor;
+import org.springframework.data.repository.query.ReactiveQueryByExampleExecutor;
+import org.springframework.graphql.boot.GraphQlAutoConfiguration;
+import org.springframework.graphql.boot.GraphQlSourceBuilderCustomizer;
+import org.springframework.graphql.data.query.QueryByExampleDataFetcher;
+import org.springframework.graphql.execution.GraphQlSource;
+
+/**
+ * {@link EnableAutoConfiguration Auto-configuration} that creates a
+ * {@link GraphQlSourceBuilderCustomizer}s to detect Spring Data repositories
+ * with Query By Example support and register them as {@code DataFetcher}s for
+ * any queries with a matching return type.
+ *
+ * @author Rossen Stoyanchev
+ * @since 1.0.0
+ * @see QueryByExampleDataFetcher#autoRegistrationTypeVisitor(List, List)
+ */
+@Configuration(proxyBeanMethods = false)
+@ConditionalOnWebApplication(type = ConditionalOnWebApplication.Type.SERVLET)
+@ConditionalOnClass({GraphQL.class, QueryByExampleExecutor.class })
+@ConditionalOnBean(GraphQlSource.class)
+@AutoConfigureAfter(GraphQlAutoConfiguration.class)
+public class GraphQlWebMvcQueryByExampleAutoConfiguration {
+
+	@Bean
+	public GraphQlSourceBuilderCustomizer queryByExampleRegistrar(
+			ObjectProvider<QueryByExampleExecutor<?>> executorsProvider,
+			ObjectProvider<ReactiveQueryByExampleExecutor<?>> reactiveExecutorsProvider) {
+
+		return builder -> {
+			List<QueryByExampleExecutor<?>> executors =
+					executorsProvider.stream().collect(Collectors.toList());
+
+			List<ReactiveQueryByExampleExecutor<?>> reactiveExecutors =
+					reactiveExecutorsProvider.stream().collect(Collectors.toList());
+
+			if (!executors.isEmpty()) {
+				builder.typeVisitors(Collections.singletonList(
+						QueryByExampleDataFetcher.autoRegistrationTypeVisitor(executors, reactiveExecutors)));
+			}
+		};
+	}
+
+}