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Java ResultSet moveToInsertRow() method with example
When we execute certain SQL queries (SELECT query in general) they return tabular data.
The java.sql.ResultSet interface represents such tabular data returned by the SQL statements.
i.e. the ResultSet object holds the tabular data returned by the methods that execute the statements which quires the database (executeQuery() method of the Statement interface in general).
The ResultSet object has a cursor/pointer which points to the current row. Initially this cursor is positioned before first row.
The insertRow is a special row of the ResultSet in JDBC, it is associated with the updatable ResultSet objects. In it you can construct a new Row calling the UpdateXXX() methods ((updateNClob(), updateNCharacterStream(), updateString(), updateInt(), updateNString(), updateBinaryStream()).
After adding values to all the columns in the table using the updateXXX() methods you can insert data using the insertRow() method.
When you are at the insert row you can call only the UpdateXXX(), getXXX() and, insertRow() methods.
The insertRow() method of the ResultSet interface moves the cursor to the insert row.
rs.moveToInsertRow();
rs.updateInt("ID", id);
rs.updateString("First_Name", "Ishant");
rs.updateString("Last_Name", "Sharma");
rs.updateDate("Date_Of_Birth", new Date(904694400000L));
rs.updateString("Place_Of_Birth", "Delhi");
rs.updateString("Country", "India");
rs.insertRow();To insert a record into a ResultSet using the insertRow() method −
Create the ResultSet object as −
Statement stmt = con.createStatement( ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE);
The moveToInsertRow() method of the ResultSet interface navigates the cursor to the position where you need to insert the next record. Therefore, move the cursor to the appropriate position to insert a row using this method.
rs.moveToInsertRow();
The updateXXX() methods of the ResultSet interface allows you to insert/update values in to the ResultSet object.
Add values to the new row using these methods for example if you need to insert an integer value at 1st column and, String value at 2nd column you can do so using the updateInt() and updateString() methods as −
rs.updateInt(1, integerValue); rs.updateString(2, "stringValue");
Finally, insert the row into the table and the ResultSet using the insertRow() method.
rs.insertRow();
Example
Let us create a table with name MyPlayers in MySQL database using CREATE statement as shown below −
CREATE TABLE MyPlayers( ID INT, First_Name VARCHAR(255), Last_Name VARCHAR(255), Date_Of_Birth date, Place_Of_Birth VARCHAR(255), Country VARCHAR(255), PRIMARY KEY (ID) );
Now, we will insert 7 records in MyPlayers table using INSERT statements −
insert into MyPlayers values(1, 'Shikhar', 'Dhawan', DATE('1981-12-05'), 'Delhi', 'India');
insert into MyPlayers values(2, 'Jonathan', 'Trott', DATE('1981-04-22'), 'CapeTown', 'SouthAfrica');
insert into MyPlayers values(3, 'Kumara', 'Sangakkara', DATE('1977-10-27'), 'Matale', 'Srilanka');
insert into MyPlayers values(4, 'Virat', 'Kohli', DATE('1988-11-05'), 'Delhi', 'India');
insert into MyPlayers values(5, 'Rohit', 'Sharma', DATE('1987-04-30'), 'Nagpur', 'India');
insert into MyPlayers values(6, 'Ravindra', 'Jadeja', DATE('1988-12-06'), 'Nagpur', 'India');
insert into MyPlayers values(7, 'James', 'Anderson', DATE('1982-06-30'), 'Burnley', 'England');Following example retrieves the contents of the MyPlayers table as a ResultSet object and, inserts a new record into it, as well as the table.
import java.sql.Connection;
import java.sql.Date;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class ResultSet_moveToInsertRow {
public static void main(String args[]) throws SQLException {
//Registering the Driver
DriverManager.registerDriver(new com.mysql.jdbc.Driver());
//Getting the connection
String mysqlUrl = "jdbc:mysql://localhost/mydatabase";
Connection con = DriverManager.getConnection(mysqlUrl, "root", "password");
System.out.println("Connection established......");
//Creating the Statement
Statement stmt = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,
ResultSet.CONCUR_UPDATABLE);
//Query to retrieve records
String query = "Select * from MyPlayers";
//Executing the query
ResultSet rs = stmt.executeQuery(query);
rs.last();
int id = rs.getInt("ID")+1;
rs.moveToInsertRow();
rs.updateInt("ID", id);
rs.updateString("First_Name", "Ishant");
rs.updateString("Last_Name", "Sharma");
rs.updateDate("Date_Of_Birth", new Date(904694400000L));
rs.updateString("Place_Of_Birth", "Delhi");
rs.updateString("Country", "India");
rs.insertRow();
rs.beforeFirst();
System.out.println("Contents of the table after inserting a new row: ");
while(rs.next()) {
System.out.print("ID: "+rs.getInt("ID")+", ");
System.out.print("Name: "+rs.getString("First_Name")+", ");
System.out.print("Age: "+rs.getString("Last_Name")+", ");
System.out.print("Salary: "+rs.getDate("Date_Of_Birth")+", ");
System.out.print("Country: "+rs.getString("Place_Of_Birth")+", ");
System.out.print("Address: "+rs.getString("Country"));
System.out.println();
}
}
}Output
Connection established...... Contents of the table after inserting a new row: ID: 1, Name: Shikhar, Age: Dhawan, Salary: 1981-12-05, Country: Delhi, Address: India ID: 2, Name: Jonathan, Age: Trott, Salary: 1981-04-22, Country: CapeTown, Address: SouthAfrica ID: 3, Name: Kumara, Age: Sangakkara, Salary: 1977-10-27, Country: Matale, Address: Srilanka ID: 4, Name: Virat, Age: Kohli, Salary: 1988-11-05, Country: Mumbai, Address: India ID: 5, Name: Rohit, Age: Sharma, Salary: 1987-04-30, Country: Nagpur, Address: India ID: 6, Name: Ravindra, Age: Jadeja, Salary: 1988-12-06, Country: Nagpur, Address: India ID: 7, Name: James, Age: Anderson, Salary: 1982-06-30, Country: Burnley , Address: England ID: 8, Name: Ishant, Age: Sharma, Salary: 1998-09-02, Country: Delhi, Address: India
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