Examples of jdbm.RecordManager.commit()

jdbm.RecordManager.commit()
Commit (make persistent) all changes since beginning of transaction.

                // now remove it all
                
                for (int count = 0; count < 1000; count++){
                    tree.remove(keys[count]);
                    if (count % 100 == 0)
                        recman.commit();
                }
                recman.commit();
                
                BPage root = tree.getRoot();
                assertNull(root);

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                for (int count = 0; count < 1000; count++){
                    tree.remove(keys[count]);
                    if (count % 100 == 0)
                        recman.commit();
                }
                recman.commit();
                
                BPage root = tree.getRoot();
                assertNull(root);
                
            } finally {

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        //create huge list to be compressed
        ArrayList l1 = new ArrayList();
        for(int i = 0;i<100000;i++) l1.add(i);
        
        long id = recman.insert(l1);
        recman.commit();
        ArrayList l2 = (ArrayList) recman.fetch(id);
        assertEquals(l1,l2);


        
        recman.update(id, l2);

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        ArrayList l2 = (ArrayList) recman.fetch(id);
        assertEquals(l1,l2);


        
        recman.update(id, l2);
        recman.commit();
        ArrayList l3 = (ArrayList) recman.fetch(id);
        assertEquals(l1,l3);


    }

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    main.putValue(new Person("Alotta Fagina","Las Vegas","USA"));
        
    /**
     * Persists inserted values
     */
    recman.commit();
    
    /**
     * Get persons with name Austin Powers
     */
    System.out.println();

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    System.out.println(treeMap.keySet());
    // > [1, 2, 3]
    
    /** Map changes are not persisted yet, commit them (save to disk) */
    recMan.commit();


    System.out.println(treeMap.keySet());
    // > [1, 2, 3]


    /** Delete one record. Changes are not commited yet, but are visible. */

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        /** insert 1e7 records */
        for(long i = 0;i<1e8;i++){
          m.put(i, "aa"+i);        
          if(i%1e5==0){
            /** Commit periodically, otherwise program would run out of memory */              
            recman.commit();
            System.out.println(i);            
          }
            
        }

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            System.out.println(i);            
          }
            
        }
        
        recman.commit();
        recman.close();
        System.out.println("DONE");
        
  }
}

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        assertTrue("check data2",
               UtilTT.checkRecord((byte[]) recman.fetch(rowid2), 150000, (byte) 1) );


        assertEquals("old and new rowid", rowid1, rowid2);


        recman.commit();


        // insert a 150000 byte record.
        data1 = UtilTT.makeRecord(150000, (byte) 2);
        rowid1 = recman.insert(data1);
        assertTrue("check data1",

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      Object obj = recman.fetch(6666666);
      assertTrue(obj == null);
      
      try{
        recman.update(6666666, obj);
        recman.commit();
        fail();
      }catch(IOException expected){


      }
    }

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