I have a customer table and an address table. I'm trying to automatically insert the primary key value into the address table. Initially, I had it the other way around and it worked, however, the relationship was wrong since I wasn't able to delete cascade when a customer was deleted. Information inserts into the customer table but not the address table. This is what I have. Any insight would be appreciated.
/**
* Add a new customer.
* #param customer The customer to be added.
* #return customerId.
* #throws SQLException If an error happens.
*/
public int addCustomer(Customer customer) throws SQLException {
// first insert the address of the customer
//int addressId = addAddress(customer.getAddress());
// next insert the customer
var sql = "INSERT INTO customer (customerId, customerName, active, createdBy)" +
" VALUES (?, ?, ?, ?)";
var statement = connection.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS);
statement.setInt(1, 0);
statement.setString(2, customer.getName());
//statement.setInt(3, addressId);
statement.setBoolean(3, customer.isActive());
statement.setString(4, customer.getCreatedBy());
statement.execute();
var generatedKeys = statement.getGeneratedKeys();
generatedKeys.next();
return (int) generatedKeys.getLong(1);
}
/**
* Add a new address to the database.
* #param address The address to be added.
* #throws SQLException if an error happens.
*/
public void addAddress(Address address) throws SQLException {
int customerId = addCustomer(address.getCustomer());
var sql = "INSERT INTO address (addressId, customerId, address, address2, cityId, countryId, postalCode, phone, createdBy) " +
"VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)";
var statement = connection.prepareStatement(sql);
statement.setInt(1, 0);
statement.setInt(2, customerId);
statement.setString(3, address.getAddress());
statement.setString(4, address.getAddress2());
statement.setInt(5, address.getCity().getId());
statement.setInt(6, address.getCountry().getId());
statement.setString(7, address.getPostalCode());
statement.setString(8, address.getPhone());
statement.setString(9, address.getCreatedBy());
statement.execute();
}
Got some help with just updating the delete customer method so it deletes the associated address along with the customer.
enter code here
public void deleteCustomer(Customer customer) throws Exception {
var appointments =
appointmentRepository.findCustomerAppointments(customer.getId());
if(!appointments.isEmpty()){
throw new RuntimeException("Constraint Violation");
}
var deleteAddress = "DELETE FROM address WHERE addressId = ?";
var statementDeleteAddress = connection.prepareStatement(deleteAddress);
statementDeleteAddress.setInt(1, customer.getAddress().getId());
statementDeleteAddress.execute();
var sql = "DELETE FROM customer WHERE customerId = ?";
var statement = connection.prepareStatement(sql);
statement.setInt(1, customer.getId());
statement.execute();
Related
For example if I add new Department(new BigInteger("50"), "ODD", "SPB"), all work, it values are insert into database. But if I want again insert for example new Department(new BigInteger("50"), "ODDMOD", "SPBMOD"), appear java.sql.SQLIntegrityConstraintViolationException: integrity constraint violation: unique constraint or index violation; SYS_PK_10092 table: DEPARTMENT. I know that can not insert values with the same primary key, but how can update values if primary key exists or other solutions?
public Department save(Department department) throws SQLException {
Connection connection = ConnectionSource.instance().createConnection();
String sql = "insert into department values (?, ?, ?)";
PreparedStatement statement = connection.prepareStatement(sql);
statement.setLong(1, Long.parseLong(String.valueOf(department.getId())));
statement.setString(2, department.getName());
statement.setString(3, department.getLocation());
statement.executeUpdate();
PreparedStatement st = connection.prepareStatement("select * from department where id = ? ");
st.setLong(1, Long.parseLong(String.valueOf(department.getId())));
ResultSet resultSet = st.executeQuery();
resultSet.next();
Department demper = new Department(
new BigInteger(String.valueOf(resultSet.getInt("id"))),
resultSet.getString("name"),
resultSet.getString("location")
);
return demper;
}
You want an upsert here:
public Department save(Department department) throws SQLException {
Connection connection = ConnectionSource.instance().createConnection();
String sql = "MERGE INTO department d1 " +
"USING (VALUES ?, ?, ?) d2 (id, name, location) " +
" ON (d1.id = d2.id) " +
" WHEN MATCHED THEN UPDATE SET " +
" d1.name = d2.name, d1.location = d2.location " +
" WHEN NOT MATCHED THEN INSERT (id, name, location) VALUES (d2.id, d2.name, d2.location)";
PreparedStatement statement = connection.prepareStatement(sql);
// execute merge here as before
statement.setLong(1, Long.parseLong(String.valueOf(department.getId())));
statement.setString(2, department.getName());
statement.setString(3, department.getLocation());
statement.executeUpdate();
// ...
}
A MERGE behaves by doing an insert if the department id does not already exist in the table. Otherwise it will do an update. Note that if you shift to JPA/Hibernate from pure JDBC, the JPA save() method can upsert automatically for you under the hood.
My app allows users to create an account (stored in database) and place orders.
When a client registers himself, I want to generate a primary key named CLIENT_CODE to identify him, starting from x value and increment it with y value. (I'm using oracle 11g atm)
I've tried this so far:
private void jButton6ActionPerformed(java.awt.event.ActionEvent evt) {
String fname = jTextField9.getText();
String lname = jTextField10.getText();
String city = jTextField11.getText();
String street = jTextField13.getText();
String number = jTextField14.getText();
String userClient = jTextField15.getText();
String pass1 = String.valueOf(jPasswordField5.getPassword());
String pass2 = String.valueOf(jPasswordField6.getPassword());
if(verifyFields()){
if(!checkUsername(userClient)){
OraclePreparedStatement ps;
OracleResultSet rs;
String registerClient = "insert into CLIENT (FNAME_CL, LNAME, CITY, STREET, NUMBER, MONEY, CLIENT_CODE, USER_CLIENT, PASS) values (?, ?, ?, ?, ?, ?, ?, ?, ?)";
try {
ps = (OraclePreparedStatement) JavaConnectDb.ConnectDb().prepareStatement(registerClient);
ps.setString(1, fname);
ps.setString(2, lname);
ps.setString(3, city);
ps.setString(4, street);
ps.setString(5, number);
ps.setDouble(6, 0.0);
ps.setInt(7, ???); <--- here should be the generated primary key
ps.setString(8, userClient);
ps.setString(9, pass1);
if(ps.executeUpdate() != 0){
JOptionPane.showMessageDialog(null, "Account created!");
} else{
JOptionPane.showMessageDialog(null, "Error: Check your info");
}
} catch (SQLException ex) {
Logger.getLogger(App.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
}
Don't do it in Java; handle the primary key value creation in the database using a sequence:
CREATE SEQUENCE CLIENT__CLIENT_CODE__SEQ
START WITH 1
INCREMENT BY 1
Then just use your sequence in the INSERT statement and use the RETURNING clause to get the generated value as an OUT parameter of your prepared statement.
insert into CLIENT (
FNAME_CL,
LNAME,
CITY,
STREET,
NUMBER,
MONEY,
CLIENT_CODE,
USER_CLIENT,
PASS
) values (
?,
?,
?,
?,
?,
?,
CLIENT__CLIENT_CODE__SEQ.NEXTVAL,
?,
?
) RETURNING CLIENT_CODE INTO ?
If you were using Oracle 12c then you could use GENERATED AS IDENTITY in the table's CREATE DDL statement to generate the values without creating a separate sequence.
I have an EMPLOYEE table that has 4 fields; ID, NAME, AGE, SALARY. ID is unique and auto-increment.
Below is the code to insert a row in the table, using Spring's JDBCTemplate. Please suggest, how can I auto increment ID field.
String sql = "insert into employee values (?,?,?,?)"
jdbcTemplate.update( sql, ID, bean.getName(), bean.getAge(), bean.getSalary())
I see, you tag your question Oracle, use Oracle sequence then.
String sql = "insert into Employee values (id_seq.nextval, ?, ?, ?)";
jdbcTemplate.update(sql, bean.getName(), bean.getAge(), bean.getSalary());
Ref: How to create Sequence in Oracle.
Just add following code to your domain:
Ref: http://docs.spring.io/spring/docs/2.5.x/reference/jdbc.html#jdbc-auto-genereted-keys
import org.springframework.jdbc.support.GeneratedKeyHolder;
import org.springframework.jdbc.support.KeyHolder;
final String INSERT_SQL = "insert into my_test (name) values(?)";
final String name = "Rob";
KeyHolder keyHolder = new GeneratedKeyHolder();
jdbcTemplate.update(
new PreparedStatementCreator() {
public PreparedStatement createPreparedStatement(Connection connection) throws SQLException {
PreparedStatement ps =
connection.prepareStatement(INSERT_SQL, new String[] {"id"});
ps.setString(1, name);
return ps;
}
},
keyHolder);
I want to insert two rows into master and detail table.
Master and detail table with autoincremented id.
CREATE TABLE MI_User (
id_user NUMBER(11) NOT NULL,
age NUMBER(3),
name_user varchar2(128),
constraint USER_PK PRIMARY KEY (id_user));
CREATE TABLE Friends (
id_friend NUMBER(11) not null,
name VARCHAR2(64),
id_user NUMBER(11) NOT NULL,
constraint FRIEND_PK PRIMARY KEY (id_friend)
);
Model classes are:
public class User {
private String id;
private Integer age;
private String name;
private ArrayList<Friend> friends;
}
public class Friend {
private Long id_user;
private String name;
}
There is example from Hibernate:
tx = session.beginTransaction();
User user = new User(name, age);
employeeID = (Integer) session.save(employee);
tx.commit();
I try to insert with JDBS:
conn = DriverManager
.getConnection("jdbc:oracle:thin:#localhost:1521:xe", "hr", "hr");
ps = conn
.prepareStatement("INSERT INTO MI_USER (BALANCE, AGE, NAME_USER, GENDER, COMPANY, EMAIL, ADDRESS)\n" +
" VALUES (?, ?, ?, ?, ?, ?, ?)");
ps.setDouble(1, user.getDoubleBallans());
ps.setInt(2, user.getAge());
ps.setString(3, user.getName());
ps.executeUpdate();
How to get id_user and insert row into detail table?
I think you can use ps.getGeneratedKeys() method and send Statement.RETURN_GENERATED_KEYS as second parameter in conn.prepareStatement() method.
I'm using a UI that I've built to get input and MySQL to store the data locally. However, when I use the MySQL insert function, I'm encountering the following error:
java.sql.SQLException: No value specified for parameter 5
I only have four input fields, and four columns in the table; however, my debugger says I have seven value parameters. Here is the Insert statement:
private static final String GLInsert = "INSERT INTO gl_maint(GL_MAINT_NUM, GL_MAINT_NAME, GL_TYPE, BAL_FORWARD)"
+ "VALUES(?, ?, ?, ?) ON DUPLICATE KEY UPDATE "
+ "GL_MAINT_NAME = ?, GL_MAINT_TYPE = ?, BAL_FORWARD = ?";
And the preparedStatement method:
public void InsertGL(String ANstr, String ANAstr, String AIstr, double balfor) {
try {
conn = DriverManager.getConnection(ConnCheck, user, password);
GL_List = FXCollections.observableArrayList();
st = conn.prepareStatement(GLInsert);
st.setString(1, ANstr);
st.setString(2, ANAstr);
st.setString(3, AIstr);
st.setDouble(4, balfor);
st.executeUpdate();
conn.close();
} catch (SQLException ex) {
Logger.getLogger(GLMaintAcct.class.getName()).log(Level.SEVERE, null, ex);
}
}
The issue is you have 7 parameters according to this query:
"INSERT INTO gl_maint(GL_MAINT_NUM, GL_MAINT_NAME, GL_TYPE, BAL_FORWARD)"
+ "VALUES(?, ?, ?, ?) ON DUPLICATE KEY UPDATE "
+ "GL_MAINT_NAME = ?, GL_MAINT_TYPE = ?, BAL_FORWARD = ?";
But you have just 4 value assigned like below:
st.setString(1, ANstr);
st.setString(2, ANAstr);
st.setString(3, AIstr);
st.setDouble(4, balfor);
You should add other 3 values like this providing their types:
st.setString(5, value5);
st.setDouble(6, value6);
st.setString(7, value7);