Support for annotated DataFetcher's

Closes gh-61, gh-90

samples/webmvc-http-security/src/main/java/io/spring/sample/graphql/SalaryController.java

@@ -0,0 +1,56 @@
+/*
+ * 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 io.spring.sample.graphql;
+
+import java.math.BigDecimal;
+import java.util.List;
+
+import org.springframework.graphql.data.method.annotation.Argument;
+import org.springframework.graphql.data.method.annotation.SchemaMapping;
+import org.springframework.graphql.data.method.annotation.GraphQlController;
+import org.springframework.graphql.data.method.annotation.MutationMapping;
+import org.springframework.graphql.data.method.annotation.QueryMapping;
+
+@GraphQlController
+public class SalaryController {
+
+	private final EmployeeService employeeService;
+
+	private final SalaryService salaryService;
+
+	public SalaryController(EmployeeService employeeService, SalaryService salaryService) {
+		this.employeeService = employeeService;
+		this.salaryService = salaryService;
+	}
+
+	@QueryMapping
+	public List<Employee> employees() {
+		return this.employeeService.getAllEmployees();
+	}
+
+	@SchemaMapping
+	public BigDecimal salary(Employee employee) {
+		return this.salaryService.getSalaryForEmployee(employee);
+	}
+
+	@MutationMapping
+	public void updateSalary(@Argument("input") SalaryInput salaryInput) {
+		String employeeId = salaryInput.getEmployeeId();
+		BigDecimal salary = salaryInput.getNewSalary();
+		this.salaryService.updateSalary(employeeId, salary);
+	}
+
+}

samples/webmvc-http-security/src/main/java/io/spring/sample/graphql/SalaryInput.java

@@ -0,0 +1,42 @@
+/*
+ * 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 io.spring.sample.graphql;
+
+import java.math.BigDecimal;
+
+public class SalaryInput {
+
+	private String employeeId;
+
+	private BigDecimal newSalary;
+
+	public String getEmployeeId() {
+		return employeeId;
+	}
+
+	public void setEmployeeId(String employeeId) {
+		this.employeeId = employeeId;
+	}
+
+	public BigDecimal getNewSalary() {
+		return newSalary;
+	}
+
+	public void setNewSalary(BigDecimal newSalary) {
+		this.newSalary = newSalary;
+	}
+
+}

samples/webmvc-http-security/src/main/java/io/spring/sample/graphql/SampleWiring.java

@@ -1,48 +0,0 @@
-package io.spring.sample.graphql;
-
-import java.math.BigDecimal;
-import java.util.Map;
-
-import graphql.schema.idl.RuntimeWiring;
-
-import org.springframework.graphql.boot.RuntimeWiringBuilderCustomizer;
-import org.springframework.stereotype.Component;
-
-@Component
-public class SampleWiring implements RuntimeWiringBuilderCustomizer {
-
-	final EmployeeService employeeService;
-
-	final SalaryService salaryService;
-
-	public SampleWiring(EmployeeService employeeService, SalaryService salaryService) {
-		this.employeeService = employeeService;
-		this.salaryService = salaryService;
-	}
-
-
-	@Override
-	public void customize(RuntimeWiring.Builder builder) {
-		builder.type("Query", wiringBuilder ->
-			wiringBuilder.dataFetcher("employees", env ->
-				employeeService.getAllEmployees()
-			)
-		);
-		builder.type("Employee", wiringBuilder ->
-			wiringBuilder.dataFetcher("salary",  env -> {
-				Employee employee = env.getSource();
-				return salaryService.getSalaryForEmployee(employee);
-			})
-		);
-		builder.type("Mutation", wiringBuilder ->
-			wiringBuilder.dataFetcher("updateSalary", env -> {
-				Map<String, String> input = env.getArgument("input");
-				String employeeId = input.get("employeeId");
-				BigDecimal newSalary = new BigDecimal(input.get("salary"));
-				salaryService.updateSalary(employeeId, newSalary);
-				return null;
-			})
-		);
-	}
-
-}