Improving spring example

dd-trace-examples/spring-boot-jdbc/src/main/java/com/datadoghq/examples/entities/User.java

@@ -20,7 +20,7 @@ public class User {
     return id;
   }
 
-  public void setId(Integer id) {
+  public void setId(final Integer id) {
     this.id = id;
   }
 
@@ -28,7 +28,7 @@ public class User {
     return name;
   }
 
-  public void setName(String name) {
+  public void setName(final String name) {
     this.name = name;
   }
 
@@ -36,7 +36,7 @@ public class User {
     return email;
   }
 
-  public void setEmail(String email) {
+  public void setEmail(final String email) {
     this.email = email;
   }
 }

dd-trace-examples/spring-boot-jdbc/src/main/java/com/datadoghq/examples/entities/UserRepository.java

@@ -5,4 +5,5 @@ import org.springframework.data.repository.CrudRepository;
 // This will be AUTO IMPLEMENTED by Spring into a Bean called userRepository
 // CRUD refers Create, Read, Update, Delete
 
-public interface UserRepository extends CrudRepository<User, Long> {}
+public interface UserRepository extends CrudRepository<User, Integer> {
+}

dd-trace-examples/spring-boot-jdbc/src/main/java/com/datadoghq/examples/resources/DBResource.java

@@ -10,19 +10,20 @@ import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.ResponseBody;
 
 @Controller // This means that this class is a Controller
-@RequestMapping(path = "/demo") // This means URL's start with /demo (after Application path)
-public class MySQLResource {
+@RequestMapping(path = "/user") // This means URL's start with /demo (after Application path)
+public class DBResource {
 
   @Autowired // This means to get the bean called userRepository
   // Which is auto-generated by Spring, we will use it to handle the data
   private UserRepository userRepository;
 
   @GetMapping(path = "/add") // Map ONLY GET Requests
-  public @ResponseBody String addNewUser(@RequestParam String name, @RequestParam String email) {
+  public @ResponseBody
+  String addNewUser(@RequestParam final String name, @RequestParam final String email) {
     // @ResponseBody means the returned String is the response, not a view name
     // @RequestParam means it is a parameter from the GET or POST request
 
-    User n = new User();
+    final User n = new User();
     n.setName(name);
     n.setEmail(email);
     userRepository.save(n);
@@ -34,4 +35,11 @@ public class MySQLResource {
     // This returns a JSON or XML with the users
     return userRepository.findAll();
   }
+
+  @GetMapping(path = "/get")
+  public @ResponseBody
+  User getUser(@RequestParam final int id) {
+    // This returns a JSON or XML with the users
+    return userRepository.findOne(id);
+  }
 }

dd-trace-examples/spring-boot-jdbc/src/main/java/com/datadoghq/examples/resources/HelloResource.java

@@ -1,16 +0,0 @@
-package com.datadoghq.examples.resources;
-
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestMethod;
-import org.springframework.web.bind.annotation.RestController;
-
-@RestController
-@RequestMapping("/")
-public class HelloResource {
-
-  @RequestMapping(method = RequestMethod.GET)
-  public String test() {
-
-    return "Hello world!";
-  }
-}

dd-trace-examples/spring-boot-jdbc/src/main/java/com/datadoghq/examples/resources/HomeResource.java

@@ -0,0 +1,25 @@
+package com.datadoghq.examples.resources;
+
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/")
+public class HomeResource {
+
+  @RequestMapping(method = RequestMethod.GET)
+  public String test() {
+
+    final StringBuilder template = new StringBuilder();
+
+    template.append("Demo links");
+    template.append("<ul>");
+    template.append("<li><a href=\"/user/add?name=name&email=f@example.com\">Add a user</a></li>");
+    template.append("<li><a href=\"/user/all\">List all users</a></li>");
+    template.append("<li><a href=\"/user/get?id=1\">Get user with id=1</a></li>");
+    template.append("</ul>");
+
+    return template.toString();
+  }
+}