Admin: 1 версия

2010-06-01T06:35:10Z

1 версия

в 18:01, 31 мая 2010

2010-05-31T18:01:44Z

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== implements SQLData ==



<source lang="java">

import java.math.BigDecimal;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLData;
import java.sql.SQLException;
import java.sql.SQLInput;
import java.sql.SQLOutput;
import java.sql.Statement;
import java.text.NumberFormat;
import java.util.Map;
class Employee implements SQLData {
public BigDecimal SSN;
public String FirstName;
public String LastName;
public BigDecimal Salary;
private String sqlUdt;
public void writeSQL(SQLOutput stream) throws SQLException {
stream.writeBigDecimal(SSN);
stream.writeString(FirstName);
stream.writeString(LastName);
stream.writeBigDecimal(Salary);
}
public String getSQLTypeName() throws SQLException {
return sqlUdt;
}
public void readSQL(SQLInput stream, String typeName) throws SQLException {
sqlUdt = typeName;
SSN = stream.readBigDecimal();
FirstName = stream.readString();
LastName = stream.readString();
Salary = stream.readBigDecimal();
}
public String calcMonthlySalary() {
double monthlySalary = Salary.doubleValue() / 12;
NumberFormat nf = NumberFormat.getCurrencyInstance();
String str = nf.format(monthlySalary);
return str;
}
}
public class MainClass {
public static void main(String[] args) throws Exception {
Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@myserver:1521:ORCL", "yourName", "mypwd");
Statement stmt = conn.createStatement();
Map map = conn.getTypeMap();
map.put("EMP_DATA", Class.forName("Employee"));
conn.setTypeMap(map);
ResultSet rs = stmt.executeQuery("SELECT * from Emp");
Employee employee;
while (rs.next()) {
int empId = rs.getInt("EmpId");
employee = (Employee) rs.getObject("Emp_Info");
System.out.print("Employee Id: " + empId + ", SSN: " + employee.SSN);
System.out.print(", Name: " + employee.FirstName + " " + employee.LastName);
System.out.println(", Yearly Salary: $" + employee.Salary + " Monthly Salary: "
+ employee.calcMonthlySalary());
}
conn.close();
}
}
</source>

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Java/Database SQL JDBC/SQLData - История изменений

Admin: 1 версия

в 18:01, 31 мая 2010