[ch03] Use JdbcContext.

src/main/java/ch01/springbook/user/dao/UserDao.java

@@ -10,32 +10,29 @@
 import org.springframework.dao.EmptyResultDataAccessException;
 
 import ch01.springbook.user.domain.User;
+import ch03.springbook.user.dao.JdbcContext;
 import ch03.springbook.user.dao.StatementStrategy;
 
 public class UserDao {
 
-	private ConnectionMaker connectionMaker;
+	private JdbcContext jdbcContext;
 	private DataSource dataSource;
 
 	public UserDao() {
 
 	}
 
-	public UserDao(ConnectionMaker connectionMaker) {
-		this.connectionMaker = connectionMaker;
+	public void setJdbcContext(JdbcContext jdbcContext) {
+		this.jdbcContext = jdbcContext;
 	}
 
 	public void setDataSource(DataSource dataSource) {
 		this.dataSource = dataSource;
 	}
 
-	public void setConnectionMaker(ConnectionMaker connectionMaker) {
-		this.connectionMaker = connectionMaker;
-	}
-
 	public void add(User user) throws ClassNotFoundException, SQLException {
 
-		jdbcContextWithStatementStrategy(new StatementStrategy() {
+		this.jdbcContext.workWithStatementStrategy(new StatementStrategy() {
 			@Override
 			public PreparedStatement makePreparedStatement(Connection c) throws SQLException {
 				PreparedStatement ps = c.prepareStatement(
@@ -80,7 +77,7 @@ public User get(String id) throws ClassNotFoundException, SQLException {
 
 	public void deleteAll() throws SQLException {
 
-		jdbcContextWithStatementStrategy(new StatementStrategy() {
+		this.jdbcContext.workWithStatementStrategy(new StatementStrategy() {
 			@Override
 			public PreparedStatement makePreparedStatement(Connection c) throws SQLException {
 				PreparedStatement ps = c.prepareStatement("delete from users");
@@ -105,30 +102,4 @@ public int getCount() throws SQLException {
 
 		return count;
 	}
-
-	private PreparedStatement makeStatement(Connection c) throws SQLException {
-		PreparedStatement ps;
-		ps = c.prepareStatement("delete from users");
-		return ps;
-	}
-
-	public void jdbcContextWithStatementStrategy(StatementStrategy stmt) throws SQLException {
-
-		Connection c = null;
-		PreparedStatement ps = null;
-
-		try {
-
-			c = dataSource.getConnection();
-			ps = stmt.makePreparedStatement(c);
-			ps.executeUpdate();
-
-		} catch (SQLException e) {
-			throw e;
-
-		} finally {
-			if (ps != null) { try { ps.close(); } catch (SQLException e) {} }
-			if (c != null) { try { c.close(); } catch (SQLException e) {} }
-		}
-	}
 }

src/main/java/ch03/springbook/user/dao/JdbcContext.java

@@ -0,0 +1,37 @@
+package ch03.springbook.user.dao;
+
+import javax.sql.DataSource;
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.SQLException;
+
+public class JdbcContext {
+
+	private DataSource dataSource;
+
+	public void setDataSource(DataSource dataSource) {
+		this.dataSource = dataSource;
+	}
+
+	public void workWithStatementStrategy(StatementStrategy stmt) throws SQLException {
+
+		Connection c = null;
+		PreparedStatement ps = null;
+
+		try {
+
+			c = this.dataSource.getConnection();
+			ps = stmt.makePreparedStatement(c);
+
+			ps.executeUpdate();
+
+		} catch (SQLException e) {
+			throw e;
+
+		} finally {
+
+			if (ps != null) { try { ps.close(); } catch (SQLException e) {} }
+			if (c != null) { try { c.close(); } catch (SQLException e) {} }
+		}
+	}
+}

src/main/resources/applicationContext.xml

@@ -14,8 +14,12 @@
         <property name="password" value="study" />
     </bean>
 
+    <bean id="jdbcContext" class="ch03.springbook.user.dao.JdbcContext">
+        <property name="dataSource" ref="dataSource" />
+    </bean>
+
     <bean id="userDao" class="ch01.springbook.user.dao.UserDao">
-        <property name="connectionMaker" ref="connectionMaker" />
+        <property name="jdbcContext" ref="jdbcContext" />
         <property name="dataSource" ref="dataSource" />
     </bean>