JDBC Batch Insert with Returning Clause - oracle

Question

Is there any way to get the values of affected rows using returning clause in JAVA while using JDBC Batch Insert statement? I am able to get the required values of a single row affected.But not for all Batch Inserts?
Code :
try {
String query = "INSERT INTO temp ( "
+ "org_node_id, org_node_category_id, org_node_name, "
+ "customer_id, created_by, created_date_time, "
+ "updated_date_time, activation_Status )"
+ " VALUES (seq_org_node_id.nextval, 11527, 'Abcd', 9756, 1, sysdate, sysdate, 'AC')"
+" returning org_node_id, org_node_name INTO ?, ?";
con = DBUtils.getOASConnection();
OraclePreparedStatement ps = (OraclePreparedStatement) con.prepareStatement(query);
ps.registerReturnParameter(1, Types.INTEGER);
ps.registerReturnParameter(2, Types.VARCHAR);
ps.execute();
ResultSet rs = ps.getReturnResultSet();
rs.next();
System.out.println("Org ID : "+ rs.getInt(1));
System.out.println("Org Name : "+ rs.getString(2));
} catch (SQLException e) {
e.printStackTrace();
}

Answer 1

Batching INSERT .. RETURNING statements isn't supported by ojdbc, but bulk insertion can work using PL/SQL's FORALL command.
Given a table...
CREATE TABLE x (
i INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
j VARCHAR2(50),
k DATE DEFAULT SYSDATE
);
...and types...
CREATE TYPE t_i AS TABLE OF NUMBER(38);
/
CREATE TYPE t_j AS TABLE OF VARCHAR2(50);
/
CREATE TYPE t_k AS TABLE OF DATE;
/
...you can work around this limitation by running a bulk insert, and bulk collecting the results (as I've shown also in this blog post) like this:
try (Connection con = DriverManager.getConnection(url, props);
CallableStatement c = con.prepareCall(
"DECLARE "
+ " v_j t_j := ?; "
+ "BEGIN "
+ " FORALL j IN 1 .. v_j.COUNT "
+ " INSERT INTO x (j) VALUES (v_j(j)) "
+ " RETURNING i, j, k "
+ " BULK COLLECT INTO ?, ?, ?; "
+ "END;")) {
// Bind input and output arrays
c.setArray(1, ((OracleConnection) con).createARRAY(
"T_J", new String[] { "a", "b", "c" })
);
c.registerOutParameter(2, Types.ARRAY, "T_I");
c.registerOutParameter(3, Types.ARRAY, "T_J");
c.registerOutParameter(4, Types.ARRAY, "T_K");
// Execute, fetch, and display output arrays
c.execute();
Object[] i = (Object[]) c.getArray(2).getArray();
Object[] j = (Object[]) c.getArray(3).getArray();
Object[] k = (Object[]) c.getArray(4).getArray();
System.out.println(Arrays.asList(i));
System.out.println(Arrays.asList(j));
System.out.println(Arrays.asList(k));
}
The results are:
[1, 2, 3]
[a, b, c]
[2018-05-02 10:40:34.0, 2018-05-02 10:40:34.0, 2018-05-02 10:40:34.0]