Examples of com.sleepycat.bind.serial.SerialBinding

com.sleepycat.bind.serial.SerialBinding
A concrete EntryBinding that treats a key or data entry as a serialized object.
This binding stores objects in serialized object format. The deserialized objects are returned by the binding, and their Class must implement the Serializable interface.

For key bindings, a tuple binding is usually a better choice than a serial binding. A tuple binding gives a reasonable sort order, and works with comparators in all cases -- see below.

WARNING: SerialBinding should not be used with Berkeley DB Java Edition for key bindings, when a custom comparator is used. In JE, comparators are instantiated and called internally at times when databases are not accessible. Because serial bindings depend on the class catalog database, a serial binding cannot be used during these times. An attempt to use a serial binding with a custom comparator will result in a NullPointerException during environment open or close.

Class Evolution

{@code SerialBinding} and other classes in this package use standard Javaserialization and all rules of Java serialization apply. This includes the rules for class evolution. Once an instance of a class is stored, the class must maintain its {@code serialVersionUID} and follow the rules defined inthe Java specification. To use a new incompatible version of a class, a different {@link ClassCatalog} must be used or the class catalog databasemust be truncated.

If more advanced class evolution features are required, consider using the {@link com.sleepycat.persist.evolve Direct Persistence Layer}.
@author Mark Hayes

         * Create a serial binding for Event data objects.  Serial
         * bindings can be used to store any Serializable object.
         * We can use some pre-defined binding classes to convert
         * primitives like the long key value to the a byte array.
         */
        eventBinding = new SerialBinding(catalog, Event.class);


        /*
         * Open a secondary database to allow accessing the primary
         * database a secondary key value. In this case, access events
         * by price.

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    classCatalog = new StoredClassCatalog(catalogDB);


    /*
     * Create the binding
     */
    keyBinding = new SerialBinding(classCatalog, KClass);
    valueBinding = new SerialBinding(classCatalog, VClass);


  }

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    classCatalog = new StoredClassCatalog(catalogDB);


    /*
     * Create the binding
     */
    keyBinding = new SerialBinding(classCatalog, KClass);
    valueBinding = new SerialBinding(classCatalog, VClass);
    entryBinding = new SerialBinding(classCatalog, Entry.class);
    pairKeyBinding = new SerialBinding(classCatalog, PairKey.class);


    SecondaryConfig mySecConfig = new SecondaryConfig();
    mySecConfig.setAllowCreate(true);
    /*
     * Duplicates are frequently required for secondary databases.

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        runner = new TransactionRunner(env);


        catalog = new StoredClassCatalog(openDb(CATALOG_FILE, false));
        catalog2 = new StoredClassCatalog(openDb("catalog2.db", true));


        SerialBinding keyBinding = new SerialBinding(catalog,
                                                  String.class);
        SerialBinding valueBinding = new SerialBinding(catalog,
                                                    TestSerial.class);
        store = openDb(STORE_FILE, false);


        map = new StoredMap(store, keyBinding, valueBinding, true);
    }

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        env = testEnv.open(StoredClassCatalogTest.makeTestName(testEnv));
        runner = new TransactionRunner(env);


        catalog = new StoredClassCatalog(openDb(CATALOG_FILE));


        SerialBinding keyBinding = new SerialBinding(catalog, String.class);
        SerialBinding valueBinding =
      new SerialBinding(catalog, TestSerial.class);
        store = openDb(STORE_FILE);


        map = new StoredMap(store, keyBinding, valueBinding, true);
    }

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      Database catalogDb = env.openDatabase(null, CLASS_CATALOG, dbConfig);


      javaCatalog = new StoredClassCatalog(catalogDb);


      EntryBinding storedEntryKeyBinding =
            new SerialBinding(javaCatalog, Object.class);
      EntryBinding storedEntryValueBinding =
            new InternalCacheEntryBinding(new TestObjectStreamMarshaller());


      storedEntriesDb = env.openDatabase(null, STORED_ENTRIES, dbConfig);

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      cacheDb = env.openDatabase(null, cacheDbName, dbConfig);
      catalogDb = env.openDatabase(null, catalogDbName, dbConfig);


      /* Use the catalog for the serial binding. */
      catalog = new StoredClassCatalog(catalogDb);
      serialBinding = new SerialBinding(catalog, null);


      /* Start with a fresh transaction map. */
      txnMap = new ConcurrentHashMap();
   }

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      cacheDb = env.openDatabase(null, cacheDbName, dbConfig);
      catalogDb = env.openDatabase(null, catalogDbName, dbConfig);


      /* Use the catalog for the serial binding. */
      catalog = new StoredClassCatalog(catalogDb);
      serialBinding = new SerialBinding(catalog, null);


      /* Start with a fresh transaction map. */
      txnMap = new ConcurrentHashMap<Object, Transaction>();
   }

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      cacheDb = env.openDatabase(null, cacheDbName, dbConfig);
      catalogDb = env.openDatabase(null, catalogDbName, dbConfig);


      /* Use the catalog for the serial binding. */
      catalog = new StoredClassCatalog(catalogDb);
      serialBinding = new SerialBinding(catalog, null);


      /* Start with a fresh transaction map. */
      txnMap = new ConcurrentHashMap<Object, Transaction>();
   }

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        try {
            StoredClassCatalog classCatalog = bdb.getClassCatalog();
            BdbModule.BdbConfig dbConfig = PersistProcessor.HISTORY_DB_CONFIG;


            historyDb = bdb.openDatabase(dbName, dbConfig, true);
            SerialBinding sb = new SerialBinding(classCatalog, Map.class);
            StoredSortedMap historyMap = new StoredSortedMap(historyDb, new StringBinding(), sb, true);
            store = historyMap;
        } catch (DatabaseException e) {
            throw new RuntimeException(e);
        }

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