Kindly give me some example that how we can use "INSERT INTO ALL STATEMENT" in jdbc prepared statement inside a jsf bean?
Actually i want to take employee id's of present employees using single jsf page and using one textbox for each employee id.
How can i use INSERT INTO ALL statement to achieve this?
Following is my code snippet.
AttendanceBean.java:
public class AttendanceBean {
private int atteid;
private String attdname;
private int attday;
private int attmonth;
private int attyear;
public static Connection getAttConnection() throws Exception {
String driver = "oracle.jdbc.driver.OracleDriver";
String url = "jdbc:oracle:thin:@localhost:1521:globldb3";
String username = "scott";
String password = "tiger";
Class.forName(driver);
Connection conn = DriverManager.getConnection(url, username, password);
return c开发者_StackOverflow中文版onn;
}
public String addAttendance(){
Connection conn = null;
PreparedStatement pstmt = null;
boolean committed = false;
try {
conn = getAttConnection();
conn.setAutoCommit(false);
String query = "INSERT ALL INTO attendance VALUES (?,?,?,?,?)";
pstmt = conn.prepareStatement(query);
pstmt.setInt(1,this.atteid);
pstmt.setString(2,this.attdname);
pstmt.setInt(3,this.attday);
pstmt.setInt(4,this.attmonth);
pstmt.setInt(5,this.attyear);
pstmt.executeUpdate();
conn.commit();
conn.setAutoCommit(true);
committed = true;
return "home.xhtml";
} catch (Exception e) {
e.printStackTrace();
return "CRM.xhtml";
} finally {
try{
if (!committed) conn.rollback();
if (pstmt != null) pstmt.close();
if (conn != null) conn.close();
}catch(Exception e){
e.printStackTrace();
}
}
}
}
The correct SQL syntax for a multi-insert is:
INSERT INTO
tbl (col1, col2, col3)
VALUES
(val1a, val2a, val3a),
(val1b, val2b, val3b),
(val1c, val2c, val3c),
...
However, in JDBC, you'd better use PreparedStatement#addBatch()
in a loop, followed by a executeBatch()
to do a multi-insert. Here's a kickoff example:
private static final String SQL_INSERT = "INSERT INTO tbl (col1, col2, col3) VALUES (?, ?, ?)";
public void save(List<Entity> entities) throws SQLException {
Connection connection = null;
PreparedStatement statement = null;
try {
connection = database.getConnection();
statement = connection.prepareStatement(SQL_INSERT);
for (Entity entity : entities) {
statement.setObject(1, entity.getCol1());
statement.setObject(2, entity.getCol2());
statement.setObject(3, entity.getCol3());
statement.addBatch();
}
statement.executeBatch();
} finally {
if (statement != null) try { statement.close(); } catch (SQLException ignore) {}
if (connection != null) try { connection.close(); } catch (SQLException ignore) {}
}
}
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