编写高性能 Java 数据访问应用程序之 2 ：内联方法编程风格简介

try  {

//SQL for insert
String sqlins="'insert into CUSTOMER ("
+    "NAME, COUNTRY, STREET, CITY, PROVINCE, ZIP,"
+    "PHONE,INFO)"
+    "values( ?, ?, ?, ?, ?, ?, ?, ?)";

//prepare the INSERT statement
PreparedStatement pstmt =
con.prepareStatement(sqlins );

// setup parameters
pstmt.setString (1, "custName");
pstmt.setString (2, "custCountry");
pstmt.setString (3, "custStreet");
pstmt.setString (4, "custCity");
pstmt.setString (5, "custProvince");
pstmt.setString (6, "custZip");
pstmt.setString (7, "custPhone");
pstmt.setString (8, "custInfo");

//execute the INSERT statement
pstmt.execute();

//close the prepared statement
pstmt.close();

// SQL for SELECT
String sqlSel = "select Name, Country, Street, "
+ "Province,Zip from CUSTOMER where Customer = ?";

//prepare the SELECT statement
pstmt =  con.prepareStatement(sqlSel);

//set the Input parameter
pstmt.setString (1, "custCountry");

//execute SELECT statement
pstmt.execute();

//get the results and set values in Customer Bean
ResultSet result = pstmt.getResultSet ();
List<Customer> custList =
new ArrayList<Customer>();
while (result.next ()) {
Customer cust = new Customer();
cust.name = result.getString (1);
cust.country = result.getString (2);
cust.street = result.getString (3);
cust.province = result.getString (4);
cust.zip = result.getString (5);
custList.add (cust);
}
}
catch (SQLException e) {
e.pringStackTrace ();
}

//Get Instance of Data
Data data = DataFactory.getData(con);

// SQL for insert
String sqlins = "insert into CUSTOMER ("
+     "NAME,COUNTRY,STREET,CITY,PROVINCE,ZIP, "
+     "PHONE, INFO)"
+    "values( ?, ?, ?, ?, ?, ?, ?, ?)";

//execute the INSERT statement
data.update (sqlins, "custName",
"custCountry", "custStreet", "custCity",
"custProvince", "custZip", "custPhone", "custInfo");

// SQL for SELECT
String sqlSel = "select Name, Country, Street, "
+ "Province,Zip from CUSTOMER where Customer = ?";

//execute the Select and get the list of customer
List<Customer> customerList = data.queryList (sqlSel, Customer.
class , "custCountry");