Examples with DataSerializable org.apache.geode.DataSerializable used on opensource projects

Example 6 with DataSerializable

use of org.apache.geode.DataSerializable in project geode by apache.

the class InternalDataSerializer method invokeToData.

/**
   * For backward compatibility this method should be used to invoke toData on a DSFID or
   * DataSerializable. It will invoke the correct toData method based on the class's version
   * information. This method does not write information about the class of the object. When
   * deserializing use the method invokeFromData to read the contents of the object.
   * 
   * @param ds the object to write
   * @param out the output stream.
   */
public static void invokeToData(Object ds, DataOutput out) throws IOException {
    boolean isDSFID = ds instanceof DataSerializableFixedID;
    try {
        boolean invoked = false;
        Version v = InternalDataSerializer.getVersionForDataStreamOrNull(out);
        if (v != null && v != Version.CURRENT) {
            // get versions where DataOutput was upgraded
            Version[] versions = null;
            if (ds instanceof SerializationVersions) {
                SerializationVersions sv = (SerializationVersions) ds;
                versions = sv.getSerializationVersions();
            }
            // there has been a change in the message
            if (versions != null && versions.length > 0) {
                for (Version version : versions) {
                    // if peer version is less than the greatest upgraded version
                    if (v.compareTo(version) < 0) {
                        ds.getClass().getMethod("toDataPre_" + version.getMethodSuffix(), new Class[] { DataOutput.class }).invoke(ds, out);
                        invoked = true;
                        break;
                    }
                }
            }
        }
        if (!invoked) {
            if (isDSFID) {
                ((DataSerializableFixedID) ds).toData(out);
            } else {
                ((DataSerializable) ds).toData(out);
            }
        }
    } catch (IOException io) {
        // as a problem with the plugin code
        if (isDSFID) {
            throw io;
        } else {
            throw new ToDataException("toData failed on DataSerializable " + ds.getClass(), io);
        }
    } catch (CancelException | ToDataException | GemFireRethrowable ex) {
        // Serializing a PDX can result in a cache closed exception. Just rethrow
        throw ex;
    } catch (VirtualMachineError err) {
        SystemFailure.initiateFailure(err);
        // now, so don't let this thread continue.
        throw err;
    } catch (Throwable t) {
        // Whenever you catch Error or Throwable, you must also
        // catch VirtualMachineError (see above). However, there is
        // _still_ a possibility that you are dealing with a cascading
        // error condition, so you also need to check to see if the JVM
        // is still usable:
        SystemFailure.checkFailure();
        throw new ToDataException("toData failed on DataSerializable " + ds.getClass(), t);
    }
}

Example 7 with DataSerializable

use of org.apache.geode.DataSerializable in project geode by apache.

the class InternalDataSerializer method readUserDataSerializable.

private static Object readUserDataSerializable(final DataInput in, int classId) throws IOException {
    Instantiator instantiator = InternalInstantiator.getInstantiator(classId);
    if (instantiator == null) {
        logger.error(LogMarker.SERIALIZER, LocalizedMessage.create(LocalizedStrings.DataSerializer_NO_INSTANTIATOR_HAS_BEEN_REGISTERED_FOR_CLASS_WITH_ID_0, classId));
        throw new IOException(LocalizedStrings.DataSerializer_NO_INSTANTIATOR_HAS_BEEN_REGISTERED_FOR_CLASS_WITH_ID_0.toLocalizedString(classId));
    } else {
        try {
            DataSerializable ds;
            if (instantiator instanceof CanonicalInstantiator) {
                CanonicalInstantiator ci = (CanonicalInstantiator) instantiator;
                ds = ci.newInstance(in);
            } else {
                ds = instantiator.newInstance();
            }
            ds.fromData(in);
            return ds;
        } catch (Exception ex) {
            throw new SerializationException(LocalizedStrings.DataSerializer_COULD_NOT_DESERIALIZE_AN_INSTANCE_OF_0.toLocalizedString(instantiator.getInstantiatedClass().getName()), ex);
        }
    }
}

Example 8 with DataSerializable

use of org.apache.geode.DataSerializable in project geode by apache.

the class DataSerializableJUnitTest method testCanonicalInstantiator.

/**
   * Tests that an <code>CanonicalInstantiator</code> is invoked at the appropriate times.
   */
@Test
public void testCanonicalInstantiator() throws Exception {
    final boolean[] wasInvoked = new boolean[] { false };
    Instantiator.register(new CanonicalInstantiator(CanonicalDataSerializableImpl.class, (byte) 45) {

        public DataSerializable newInstance(DataInput di) throws IOException {
            wasInvoked[0] = true;
            return CanonicalDataSerializableImpl.create(di.readByte());
        }
    });
    try {
        byte id = (byte) 57;
        Class_testInstantiator.supClass = CanonicalDataSerializableImpl.class;
        DataSerializer.register(Class_testInstantiator.class);
        try {
            Object o = CanonicalDataSerializableImpl.create();
            DataSerializer.writeObject(o, getDataOutput());
            Object o2 = DataSerializer.readObject(getDataInput());
            assertTrue(wasInvoked[0]);
            assertTrue(o == o2);
        } finally {
            InternalDataSerializer.unregister(id);
        }
    } finally {
        InternalInstantiator.unregister(CanonicalDataSerializableImpl.class, (byte) 45);
    }
}

Example 9 with DataSerializable

use of org.apache.geode.DataSerializable in project geode by apache.

the class DataSerializableJUnitTest method testInstantiator2.

@Test
public void testInstantiator2() throws Exception {
    final boolean[] wasInvoked = new boolean[] { false };
    Instantiator.register(new Instantiator(DataSerializableImpl.class, 20000) {

        public DataSerializable newInstance() {
            wasInvoked[0] = true;
            return new DataSerializableImpl();
        }
    });
    try {
        byte id = (byte) 57;
        Class_testInstantiator.supClass = DataSerializableImpl.class;
        DataSerializer.register(Class_testInstantiator.class);
        try {
            Object o = new DataSerializableImpl(new Random());
            DataSerializer.writeObject(o, getDataOutput());
            Object o2 = DataSerializer.readObject(getDataInput());
            assertTrue(wasInvoked[0]);
            assertEquals(o, o2);
        } finally {
            InternalDataSerializer.unregister(id);
        }
    } finally {
        InternalInstantiator.unregister(DataSerializableImpl.class, 20000);
    }
}

Example 10 with DataSerializable

use of org.apache.geode.DataSerializable in project geode by apache.

the class DataSerializableJUnitTest method testDataSerializable.

/**
   * Tests serializing an object that implements {@link DataSerializable}
   */
@Test
public void testDataSerializable() throws Exception {
    DataSerializable ds = new DataSerializableImpl(getRandom());
    DataOutputStream out = getDataOutput();
    ds.toData(out);
    out.flush();
    DataSerializable ds2 = new DataSerializableImpl();
    ds2.fromData(getDataInput());
    assertEquals(ds, ds2);
}