[spring-core-1] haon.lee(이민성) 과제 제출합니다.

spring-core-1/initial/src/main/java/cholog/bean/AutowiredBean.java

@@ -8,6 +8,7 @@ public class AutowiredBean {
     /*
     어떤 방법으로 Component에 Bean을 주입하는지 학습하기
      */
+    @Autowired
     private SpringBean springBean;
 
     public String sayHello() {

spring-core-1/initial/src/main/java/cholog/bean/SpringBean.java

@@ -5,6 +5,7 @@
 /*
 어떤 어노테이션을 붙였을 때 Bean으로 생성되는지 학습하기
  */
+@Component
 public class SpringBean {
     public String hello() {
         return "Hello";

spring-core-1/initial/src/main/java/cholog/di/ConstructorInjection.java

@@ -6,6 +6,10 @@
 public class ConstructorInjection {
     private InjectionBean injectionBean;
 
+    public ConstructorInjection(InjectionBean injectionBean) {
+        this.injectionBean = injectionBean;
+    }
+
     /*
     ConstructorInjection으로 InjectionBean 주입받기
      */

spring-core-1/initial/src/main/java/cholog/di/FieldInjection.java

@@ -9,6 +9,7 @@ public class FieldInjection {
     /*
     FieldInjection으로 InjectionBean 주입받기
      */
+    @Autowired
     private InjectionBean injectionBean;
 
     public String sayHello() {

spring-core-1/initial/src/main/java/cholog/di/SetterInjection.java

@@ -14,4 +14,9 @@ public class SetterInjection {
     public String sayHello() {
         return injectionBean.hello();
     }
+
+    @Autowired
+    public void setInjectionBean(InjectionBean injectionBean) {
+        this.injectionBean = injectionBean;
+    }
 }

spring-core-1/initial/src/main/java/cholog/scan/ContextConfiguration.java

@@ -1,10 +1,14 @@
 package cholog.scan;
 
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.Configuration;
 
-@Configuration
 /*
 ComponentScan에 대해 학습하고, ComponenetScanBean을 Bean으로 등록하기
  */
+@Configuration
+@ComponentScan(basePackages = "cholog.scan")
 public class ContextConfiguration {
+
 }

spring-jdbc-1/initial/src/main/java/cholog/QueryingDAO.java

@@ -31,41 +31,65 @@ public QueryingDAO(JdbcTemplate jdbcTemplate) {
      */
     public int count() {
         //TODO : customers 디비에 포함되어있는 row가 몇개인지 확인하는 기능 구현
-        return 0;
+        return jdbcTemplate.queryForObject("select count(*) from customers", Integer.class);
     }
 
     /**
      * public <T> T queryForObject(String sql, Class<T> requiredType, @Nullable Object... args)
      */
     public String getLastName(Long id) {
         //TODO : 주어진 Id에 해당하는 customers의 lastName을 반환
-        return null;
+        return jdbcTemplate.queryForObject("select last_name from customers where id = ?", String.class, id);
     }
 
     /**
      * public <T> T queryForObject(String sql, RowMapper<T> rowMapper, @Nullable Object... args)
      */
     public Customer findCustomerById(Long id) {
-        String sql = "select id, first_name, last_name from customers where id = ?";
         //TODO : 주어진 Id에 해당하는 customer를 객체로 반환
-        return null;
+        return jdbcTemplate.queryForObject(
+                "select id, first_name, last_name from customers where id = ?",
+                (resultSet, rowNum) -> {
+                    Customer customer = new Customer(
+                            resultSet.getLong("id"),
+                            resultSet.getString("first_name"),
+                            resultSet.getString("last_name")
+                    );
+                    return customer;
+                }, id);
     }
 
     /**
      * public <T> List<T> query(String sql, RowMapper<T> rowMapper)
      */
     public List<Customer> findAllCustomers() {
-        String sql = "select id, first_name, last_name from customers";
         //TODO : 저장된 모든 Customers를 list형태로 반환
-        return null;
+        return jdbcTemplate.query(
+                "select id, first_name, last_name from customers",
+                (resultSet, rowNum) -> {
+                    Customer customer = new Customer(
+                            resultSet.getLong("id"),
+                            resultSet.getString("first_name"),
+                            resultSet.getString("last_name")
+                    );
+                    return customer;
+                });
     }
 
     /**
      * public <T> List<T> query(String sql, RowMapper<T> rowMapper, @Nullable Object... args)
      */
     public List<Customer> findCustomerByFirstName(String firstName) {
-        String sql = "select id, first_name, last_name from customers where first_name = ?";
         //TODO : firstName을 기준으로 customer를 list형태로 반환
-        return null;
+        return jdbcTemplate.query(
+                "select id, first_name, last_name from customers where first_name = ?",
+                (resultSet, rowNum) -> {
+                    Customer customer = new Customer(
+                            resultSet.getLong("id"),
+                            resultSet.getString("first_name"),
+                            resultSet.getString("last_name")
+                    );
+                    return customer;
+                }, firstName);
     }
 }

spring-jdbc-1/initial/src/main/java/cholog/UpdatingDAO.java

@@ -33,26 +33,32 @@ public UpdatingDAO(JdbcTemplate jdbcTemplate) {
      */
     public void insert(Customer customer) {
         //todo: customer를 디비에 저장하기
+        jdbcTemplate.update("insert into customers (first_name, last_name) values (?, ?)",
+                customer.getFirstName(), customer.getLastName());
     }
     /**
      * public int update(String sql, @Nullable Object... args)
      */
     public int delete(Long id) {
         //todo: id에 해당하는 customer를 지우고, 해당 쿼리에 영향받는 row 수반환하기
-        return 0;
+        return jdbcTemplate.update("delete from customers where id = ?", Long.valueOf(id));
     }
 
     /**
      * public int update(final PreparedStatementCreator psc, final KeyHolder generatedKeyHolder)
      */
     public Long insertWithKeyHolder(Customer customer) {
-        String sql = "insert into customers (first_name, last_name) values (?, ?)";
         KeyHolder keyHolder = new GeneratedKeyHolder();
-
-        //todo : keyHolder에 대해 학습하고, Customer를 저장후 저장된 Customer의 id를 반환하기
+        jdbcTemplate.update(connection -> {
+            PreparedStatement ps = connection.prepareStatement(
+                    "insert into customers (first_name, last_name) values (?, ?)",
+                    new String[]{"id"});
+            ps.setString(1, customer.getFirstName());
+            ps.setString(2, customer.getLastName());
+            return ps;
+        }, keyHolder);
 
         Long id = keyHolder.getKey().longValue();
-
-        return keyHolder.getKey().longValue();
+        return id;
     }
 }