Examples of SerialBinding

com.sleepycat.bdb.bind.serial.SerialBinding
A concrete serial binding for keys or values. This binding stores objects in serial data format. If this class is used "as is" the deserialized objects are returned by the binding, and these objects must be serializable.
The class may also be extended to override the {@link #dataToObject(Object)} and {@link #objectToData(Object)} methods in order tomap between the deserialized objects and other objects. In that case the objects returned by the binding do not have to be serializable. Note that both methods must be overridden.
@author Mark Hayes
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

Examples of com.sleepycat.bdb.bind.serial.SerialBinding

        SerialFormat valueFormat = new SerialFormat(catalog,
                                                    TestSerial.class);
        store = new DataStore(openDb(STORE_FILE),
                              keyFormat, valueFormat, null);


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

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Examples of com.sleepycat.bdb.bind.serial.SerialBinding

    private void primitiveBindingTest(Object val)
        throws IOException {


        Class cls = val.getClass();
        SerialFormat format = new SerialFormat(catalog, cls);
        DataBinding binding = new SerialBinding(format);
        assertSame(format, binding.getDataFormat());


        binding.objectToData(val, buffer);
        assertTrue(buffer.getDataLength() > 0);


        Object val2 = binding.dataToObject(buffer);
        assertSame(cls, val2.getClass());
        assertEquals(val, val2);


        Object valWithWrongCls = (cls == String.class)
                      ? ((Object) new Integer(0)) : ((Object) new String(""));
        try {
            binding.objectToData(valWithWrongCls, buffer);
        } catch (IllegalArgumentException expected) {}
    }

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Examples of com.sleepycat.bdb.bind.serial.SerialBinding

        // key/value data pair to a combined value object.  For keys, however,
        // the stored data is used directly via a SerialBinding and no
        // special binding class is needed.
        //
        DataBinding partKeyBinding =
            new SerialBinding(db.getPartKeyFormat());
        EntityBinding partValueBinding =
            new PartBinding(db.getPartKeyFormat(), db.getPartValueFormat());
        DataBinding supplierKeyBinding =
            new SerialBinding(db.getSupplierKeyFormat());
        EntityBinding supplierValueBinding =
            new SupplierBinding(db.getSupplierKeyFormat(),
                                db.getSupplierValueFormat());
        DataBinding shipmentKeyBinding =
            new SerialBinding(db.getShipmentKeyFormat());
        EntityBinding shipmentValueBinding =
            new ShipmentBinding(db.getShipmentKeyFormat(),
                                db.getShipmentValueFormat());
        DataBinding cityKeyBinding =
            new SerialBinding(db.getCityKeyFormat());


        // Create map views for all stores and indices.
        // StoredSortedMap is not used since the stores and indices are
        // ordered by serialized key objects, which do not provide a very
        // useful ordering.

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Examples of com.sleepycat.bdb.bind.serial.SerialBinding

            TupleBinding.getPrimitiveBinding(Integer.class, keyFormat);


        // use String serial format and binding for values
        SerialFormat valueFormat =
            new SerialFormat(catalog, String.class);
        SerialBinding valueBinding = new SerialBinding(valueFormat);


        // open a BTREE (sorted) data store
        Db db = new Db(env, 0);
        db.open(null, "data.db", null, Db.DB_BTREE, dbFlags, 0);
        this.store = new DataStore(db, keyFormat, valueFormat, null);

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Examples of com.sleepycat.bdb.bind.serial.SerialBinding

        // In this sample, the stored keys and values are used directly rather
        // than mapping them to separate objects. Therefore, no binding classes
        // are defined here and the SerialBinding class is used.
        //
        DataBinding partKeyBinding =
            new SerialBinding(db.getPartKeyFormat());
        DataBinding partValueBinding =
            new SerialBinding(db.getPartValueFormat());
        DataBinding supplierKeyBinding =
            new SerialBinding(db.getSupplierKeyFormat());
        DataBinding supplierValueBinding =
            new SerialBinding(db.getSupplierValueFormat());
        DataBinding shipmentKeyBinding =
            new SerialBinding(db.getShipmentKeyFormat());
        DataBinding shipmentValueBinding =
            new SerialBinding(db.getShipmentValueFormat());


        // Create map views for all stores and indices.
        // StoredSortedMap is not used since the stores and indices are
        // ordered by serialized key objects, which do not provide a very
        // useful ordering.

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Examples of com.sleepycat.bdb.bind.serial.SerialBinding

        // In this sample, the stored keys and values are used directly rather
        // than mapping them to separate objects. Therefore, no binding classes
        // are defined here and the SerialBinding class is used.
        //
        DataBinding partKeyBinding =
            new SerialBinding(db.getPartKeyFormat());
        DataBinding partValueBinding =
            new SerialBinding(db.getPartValueFormat());
        DataBinding supplierKeyBinding =
            new SerialBinding(db.getSupplierKeyFormat());
        DataBinding supplierValueBinding =
            new SerialBinding(db.getSupplierValueFormat());
        DataBinding shipmentKeyBinding =
            new SerialBinding(db.getShipmentKeyFormat());
        DataBinding shipmentValueBinding =
            new SerialBinding(db.getShipmentValueFormat());
        DataBinding cityKeyBinding =
            new SerialBinding(db.getCityKeyFormat());


        // Create map views for all stores and indices.
        // StoredSortedMap is not used since the stores and indices are
        // ordered by serialized key objects, which do not provide a very
        // useful ordering.

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Examples of com.sleepycat.bind.serial.SerialBinding

      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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Examples of com.sleepycat.bind.serial.SerialBinding

        this.ticketDb = this.environment.openDatabase(null, "ticketDb",
            dbConfig);
        this.catalogDb = this.environment.openDatabase(null, "catalogDb",
            dbConfig);
        StoredClassCatalog catalog = new StoredClassCatalog(this.catalogDb);
        this.ticketBinding = new SerialBinding(catalog, Ticket.class);
    }

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Examples of com.sleepycat.bind.serial.SerialBinding

        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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Examples of com.sleepycat.bind.serial.SerialBinding

        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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