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Refactoring Jdbc Programming

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chanwook Park
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Refactoring JDBC programming 2008.10.12 박찬욱
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Table of Contents
오늘의 목표는 ? ,[object Object],[object Object],[object Object]
1. Hand-made JdbcTemplate
1.1 문제 인식 공유 ,[object Object],[object Object],[object Object],[object Object],[object Object]
1.1 문제 인식 공유 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Connection con = null; Statement stmt = null; try { con = dataSource.getConnection(); stmt = con.createStatement(); stmt.executeUpdate(“UPDATE TABLE_NAME SET...”); }c atch(SQLException e){ // 예외 처리 ... }finally { if (stmt != null) { try { stmt.close(); } catch (SQLException ex) {} } if (con != null) try { con.close(); } catch (SQLException ex) { } }
1.1 문제 인식 공유 ,[object Object],“ Bad Java code is bad J2EE code.” - Rod Johnson
1.2 해결 방안 모색 Strategy pattern 을 도입해서 문제 해결 시도
1.2 해결 방안 모색 ,[object Object],[object Object]
1.2 해결 방안 모색 ,[object Object],[object Object],[object Object],[object Object],[object Object]
2.1 Best Practice of JDBC Strategy ,[object Object],참조 : wiki[2]
1.3 Refactoring with Strategy pattern ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],update() insert()
1.3 Refactoring with Strategy pattern ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],메소드 인자로 빼냄 콜백 메소드로 구현 공통 메소드로 추출 update() insert()
1.3 Refactoring with Strategy pattern ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],update() insert()
1.3 Refactoring with Strategy pattern ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],update()
1.3 Refactoring with Strategy pattern ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],insert()
1.3 Refactoring with Strategy pattern ,[object Object]
1.3 Refactoring with Strategy pattern ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],get() getall()
1.3 Refactoring with Strategy pattern ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],get() 메소드 인자로 빼냄 콜백 메소드로 구현 공통 메소드로 추출 getall()
1.3 Refactoring with Strategy pattern ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],get() getall()
1.3 Refactoring with Strategy pattern ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],getall()
1.3 Refactoring with Strategy pattern ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],get()
1.3 Refactoring with Strategy pattern ,[object Object]
1.3 Refactoring with Strategy pattern ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],get() getall()
1.3 Refactoring with Strategy pattern ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],get() 콜백 메소드로 구현 API 로 구분
1.3 Refactoring with Strategy pattern ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],get()
1.3 Refactoring with Strategy pattern ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],get()
1.3 Refactoring with Strategy pattern ,[object Object],[object Object]
1.3 Refactoring with Strategy pattern ,[object Object]
1.3 Refactoring with Strategy pattern ,[object Object]
1.4 Summary ,[object Object]
1.4 Summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
2. SPRING JDBCTEMPLATE
2.1 Best Practice of JDBC Strategy ,[object Object],[object Object],[object Object],[object Object],[object Object],"This is a special case of the Strategy design pattern . It appears different because the interface involved are so simple "
2.1 Best Practice of JDBC Strategy ,[object Object],DAO Template Callback Interface implementation 참조 : wiki[2]
2.1 Best Practice of JDBC Strategy Jdbc-based DAO Spring-based DAO DriverManager / DataSource DataSource Statement / PreparedStatement / CallableStatement JdbcTemplate / Callback interface ResultSet POJO / POJO’s collection
2.1 Best Practice of JDBC Strategy Task Spring You Connection(DataSource) management Provide SQL Statement management Parameter Declaration Provide parameter value ResultSet management Row Data Retrieval Transaction management Exception handling
2.1 Best Practice of JDBC Strategy ,[object Object],[object Object],[object Object],[object Object],[object Object]
2.1 Best Practice of JDBC Strategy ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
2.1 Best Practice of JDBC Strategy ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
2.1 Best Practice of JDBC Strategy ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
2.2 SIMPLIFY JDBC OPERATION
2.2 Simplify JDBC operation ,[object Object],[object Object],[object Object],[object Object],[object Object]
2.2 Simplify JDBC operation ,[object Object],[object Object],[object Object],[object Object],[object Object]
2.2 Simplify JDBC operation ,[object Object],[object Object],[object Object],[object Object]
2.2 Simplify JDBC operation ,[object Object],[object Object],[object Object]
2.2 Simplify JDBC operation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
2.2 Simplify JDBC operation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
2.2 Simplify JDBC operation ,[object Object],[object Object],[object Object]
2.2 Simplify JDBC operation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Reference ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
감사합니다 .

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Refactoring Jdbc Programming

  • 1. Refactoring JDBC programming 2008.10.12 박찬욱
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  • 4. 1. Hand-made JdbcTemplate
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  • 8. 1.2 해결 방안 모색 Strategy pattern 을 도입해서 문제 해결 시도
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  • 36. 2.1 Best Practice of JDBC Strategy Jdbc-based DAO Spring-based DAO DriverManager / DataSource DataSource Statement / PreparedStatement / CallableStatement JdbcTemplate / Callback interface ResultSet POJO / POJO’s collection
  • 37. 2.1 Best Practice of JDBC Strategy Task Spring You Connection(DataSource) management Provide SQL Statement management Parameter Declaration Provide parameter value ResultSet management Row Data Retrieval Transaction management Exception handling
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  • 42. 2.2 SIMPLIFY JDBC OPERATION
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