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Bulk Processing - Inserting Rows Using Collections Of Scalar Types

Example Description

Table : BULK_PROCESSING_TABLE
create table bulk_processing_table
(
n    number not null,
d    date not null,
s    varchar2(100) not null
);
Collection Table Type : BULK_TABLE_NUMBER
create or replace type bulk_table_number force as table of number;
Collection Table Type : BULK_TABLE_DATE
create or replace type bulk_table_date force as table of date;
Collection Table Type : BULK_TABLE_VARCHAR
create or replace type bulk_table_varchar force as table of varchar2(100);
PL/SQL Procedure : COLLECTIONS_OF_OBJECTS
create or replace procedure bulk_collection_scalar
(
  i_col_number  in bulk_table_number, 
  i_col_date    in bulk_table_date, 
  i_col_varchar in bulk_table_varchar
)
is
begin
  -- process all rows in one command
  forall i in 1..i_col_number.count
    insert into bulk_processing_table
      (n,d,s)
      values
      (i_col_number(i), i_col_date(i), i_col_varchar(i));
end bulk_collection_scalar;
Java Calling Class : BulkCollectionScalar.java
package plsql_workbench_examples;

import java.sql.Date;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;

import factory.ExamplesRPCFactory;
import service.BulkCollectionScalarService;

public class BulkCollectionScalar {
  private final static int ELEMENTS = 50000;

  public static void main(String[] args) {
    try {
      // getting the service
      BulkCollectionScalarService service = ExamplesRPCFactory.getBulkCollectionScalarService();

      // generating 50000 elements to transfer to the stored procedure 
      List<Integer> numberList = new ArrayList<Integer>();
      List<Date> dateList = new ArrayList<Date>();
      List<String> stringList = new ArrayList<String>();
      for (int i = 0; i < ELEMENTS; i++) {
        numberList.add((int) (Math.random() * Integer.MAX_VALUE));
        dateList.add(new Date(System.currentTimeMillis() + (long) (Math.random() * Integer.MAX_VALUE)));
        stringList.add(UUID.randomUUID().toString());
      }

      // timer to check the throughput
      TimerCounter tc = new TimerCounter();

      // calling the stored procedure
      service.call(numberList, dateList, stringList);

      // print out throughput
      System.out.println(tc.perSecond("scalar bulk performance", ELEMENTS));
    }
    catch (Exception e) {
      e.printStackTrace();
    }
  }
}