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.bind.serial.SerialBinding

    DBWriter(Environment env, Database db, StoredClassCatalog scc)


        throws DatabaseException {
        myDb = db;
        myEnv = env;
        dataBinding = new SerialBinding(scc, PayloadData.class);
    }

View Full Code Here

Examples of com.sleepycat.bind.serial.SerialBinding

    }


    private void primitiveBindingTest(Object val) {


        Class cls = val.getClass();
        SerialBinding binding = new SerialBinding(catalog, cls);


        binding.objectToEntry(val, buffer);
        assertTrue(buffer.getSize() > 0);


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


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

View Full Code Here

Examples of com.sleepycat.bind.serial.SerialBinding

        primitiveBindingTest(new Double(123.123));
    }


    public void testNullObjects() {


        SerialBinding binding = new SerialBinding(catalog, null);
        buffer.setSize(0);
        binding.objectToEntry(null, buffer);
        assertTrue(buffer.getSize() > 0);
        assertEquals(null, binding.entryToObject(buffer));
    }

View Full Code Here

Examples of com.sleepycat.bind.serial.SerialBinding

        assertEquals(null, binding.entryToObject(buffer));
    }


    public void testSerialSerialBinding() {


        SerialBinding keyBinding = new SerialBinding(catalog, String.class);
        SerialBinding valueBinding = new SerialBinding(catalog, String.class);
        EntityBinding binding = new MySerialSerialBinding(keyBinding,
                                                          valueBinding);


        String val = "key#value?indexKey";
        binding.objectToData(val, buffer);

View Full Code Here

Examples of com.sleepycat.bind.serial.SerialBinding


    // also tests TupleSerialBinding since TupleSerialMarshalledBinding extends
    // it
    public void testTupleSerialMarshalledBinding() {


        SerialBinding valueBinding = new SerialBinding(catalog,
                                                    MarshalledObject.class);
        EntityBinding binding =
            new TupleSerialMarshalledBinding(valueBinding);


        MarshalledObject val = new MarshalledObject("abc", "primary",

View Full Code Here

Examples of com.sleepycat.bind.serial.SerialBinding

    public void testClassloaderOverride()
        throws Exception {


        DatabaseEntry entry = new DatabaseEntry();


        SerialBinding binding = new CustomLoaderBinding
            (catalog, null, new FailureClassLoader());


        try {
            binding.objectToEntry(new MyClass(), entry);
            binding.entryToObject(entry);
            fail();
        } catch (RuntimeException e) {
            assertTrue(e.getMessage().startsWith("expect failure"));
        }
    }

View Full Code Here

Examples of com.sleepycat.bind.serial.SerialBinding

         * 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.

View Full Code Here

Examples of com.sleepycat.bind.serial.SerialBinding

    classCatalog = new StoredClassCatalog(catalogDB);


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


  }

View Full Code Here

Examples of com.sleepycat.bind.serial.SerialBinding

    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.

View Full Code Here

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);
    }

View Full Code Here

0 1 2 3 4 5

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.