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

Example 1 with DataSerializable

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

the class InternalDataSerializer method invokeFromData.

/**
   * For backward compatibility this method should be used to invoke fromData on a DSFID or
   * DataSerializable. It will invoke the correct fromData method based on the class's version
   * information. This method does not read information about the class of the object. When
   * serializing use the method invokeToData to write the contents of the object.
   * 
   * @param ds the object to write
   * @param in the input stream.
   */
public static void invokeFromData(Object ds, DataInput in) throws IOException, ClassNotFoundException {
    try {
        boolean invoked = false;
        Version v = InternalDataSerializer.getVersionForDataStreamOrNull(in);
        if (v != null && v != Version.CURRENT) {
            // get versions where DataOutput was upgraded
            Version[] versions = null;
            if (ds instanceof SerializationVersions) {
                SerializationVersions vds = (SerializationVersions) ds;
                versions = vds.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("fromDataPre" + '_' + version.getMethodSuffix(), new Class[] { DataInput.class }).invoke(ds, in);
                        invoked = true;
                        break;
                    }
                }
            }
        }
        if (!invoked) {
            if (ds instanceof DataSerializableFixedID) {
                ((DataSerializableFixedID) ds).fromData(in);
            } else {
                ((DataSerializable) ds).fromData(in);
            }
        }
    } catch (EOFException | ClassNotFoundException | CacheClosedException ex) {
        // client went away - ignore
        throw ex;
    } catch (Exception ex) {
        throw new SerializationException(LocalizedStrings.DataSerializer_COULD_NOT_CREATE_AN_INSTANCE_OF_0.toLocalizedString(ds.getClass().getName()), ex);
    }
}

Example 2 with DataSerializable

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

the class InternalDataSerializer method readDataSerializable.

private static Object readDataSerializable(final DataInput in) throws IOException, ClassNotFoundException {
    Class c = readClass(in);
    try {
        Constructor init = c.getConstructor(new Class[0]);
        init.setAccessible(true);
        Object o = init.newInstance(new Object[0]);
        Assert.assertTrue(o instanceof DataSerializable);
        invokeFromData(o, in);
        if (logger.isTraceEnabled(LogMarker.SERIALIZER)) {
            logger.trace(LogMarker.SERIALIZER, "Read DataSerializable {}", o);
        }
        return o;
    } catch (EOFException ex) {
        // client went away - ignore
        throw ex;
    } catch (Exception ex) {
        throw new SerializationException(LocalizedStrings.DataSerializer_COULD_NOT_CREATE_AN_INSTANCE_OF_0.toLocalizedString(c.getName()), ex);
    }
}

Example 3 with DataSerializable

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

the class DataSerializableJUnitTest method testInstantiatorExceptions.

/**
   * Tests that the appropriate exceptions are thrown by {@link Instantiator#register} when given
   * bad input.
   */
@Test
public void testInstantiatorExceptions() {
    try {
        new Instantiator(null, (byte) 42) {

            public DataSerializable newInstance() {
                return null;
            }
        };
        fail("Should have thrown a NullPointerException");
    } catch (NullPointerException ex) {
    // pass...
    }
    try {
        Instantiator.register(null);
        fail("Should have thrown a NullPointerException");
    } catch (NullPointerException ex) {
    // pass...
    }
    Instantiator.register(new Instantiator(DataSerializableImpl.class, (byte) 42) {

        public DataSerializable newInstance() {
            return null;
        }
    });
    try {
        try {
            Instantiator.register(new Instantiator(DataSerializableImpl.class, (byte) 41) {

                public DataSerializable newInstance() {
                    return null;
                }
            });
            fail("Should have thrown an IllegalStateException");
        } catch (IllegalStateException ex) {
        // pass...
        }
        try {
            Instantiator.register(new Instantiator(DSIntWrapper.class, (byte) 42) {

                public DataSerializable newInstance() {
                    return null;
                }
            });
            fail("Should have thrown an IllegalStateException");
        } catch (IllegalStateException ex) {
        // pass...
        }
    } finally {
        InternalInstantiator.unregister(DataSerializableImpl.class, (byte) 42);
    }
}

Example 4 with DataSerializable

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

the class ResultsDataSerializabilityJUnitTest method testImplementsDataSerializable.

/*
   * In the absence of some kind of hook into the DataSerializer, just test to see if the known
   * implementation classes that are part of query results implement the DataSerializable interface
   */
@Test
public void testImplementsDataSerializable() throws Exception {
    Class[] classes = new Class[] { SortedResultSet.class, ResultsCollectionWrapper.class, ResultsSet.class, SortedStructSet.class, StructImpl.class, StructSet.class, Undefined.class, // QRegion.class, // QRegions remain unserializable
    CollectionTypeImpl.class, MapTypeImpl.class, ObjectTypeImpl.class, StructTypeImpl.class };
    List list = new ArrayList();
    for (int i = 0; i < classes.length; i++) {
        Class nextClass = classes[i];
        if (!DataSerializable.class.isAssignableFrom(nextClass)) {
            if (!DataSerializableFixedID.class.isAssignableFrom(nextClass)) {
                list.add(nextClass.getName());
            }
        }
    }
    assertTrue(list + " are not DataSerializable", list.isEmpty());
}

Example 5 with DataSerializable

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

the class InternalDataSerializer method basicWriteObject.

public static void basicWriteObject(Object o, DataOutput out, boolean ensurePdxCompatibility) throws IOException {
    checkOut(out);
    final boolean isDebugEnabled_SERIALIZER = logger.isTraceEnabled(LogMarker.SERIALIZER);
    if (isDebugEnabled_SERIALIZER) {
        logger.trace(LogMarker.SERIALIZER, "basicWriteObject: {}", o);
    }
    // Handle special objects first
    if (o == null) {
        out.writeByte(NULL);
    } else if (o instanceof DataSerializableFixedID) {
        checkPdxCompatible(o, ensurePdxCompatibility);
        DataSerializableFixedID dsfid = (DataSerializableFixedID) o;
        writeDSFID(dsfid, out);
    } else if (autoSerialized(o, out)) {
    // all done
    } else if (o instanceof DataSerializable.Replaceable) {
        // do this first to fix bug 31609
        // do this before DataSerializable
        Object replacement = ((DataSerializable.Replaceable) o).replace();
        basicWriteObject(replacement, out, ensurePdxCompatibility);
    } else if (o instanceof PdxSerializable) {
        writePdx(out, GemFireCacheImpl.getForPdx("PDX registry is unavailable because the Cache has been closed."), o, null);
    } else if (o instanceof DataSerializable) {
        if (isDebugEnabled_SERIALIZER) {
            logger.trace(LogMarker.SERIALIZER, "Writing DataSerializable: {}", o);
        }
        checkPdxCompatible(o, ensurePdxCompatibility);
        Class c = o.getClass();
        // Is "c" a user class registered with an Instantiator?
        int classId = InternalInstantiator.getClassId(c);
        if (classId != 0) {
            writeUserDataSerializableHeader(classId, out);
        } else {
            out.writeByte(DATA_SERIALIZABLE);
            DataSerializer.writeClass(c, out);
        }
        DataSerializable ds = (DataSerializable) o;
        invokeToData(ds, out);
    } else if (o instanceof Sendable) {
        if (!(o instanceof PdxInstance) || o instanceof PdxInstanceEnum) {
            checkPdxCompatible(o, ensurePdxCompatibility);
        }
        ((Sendable) o).sendTo(out);
    } else if (writeWellKnownObject(o, out, ensurePdxCompatibility)) {
    // Nothing more to do...
    } else {
        checkPdxCompatible(o, ensurePdxCompatibility);
        if (logger.isTraceEnabled(LogMarker.DUMP_SERIALIZED)) {
            logger.trace(LogMarker.DUMP_SERIALIZED, "DataSerializer Serializing an instance of {}", o.getClass().getName());
        }
        /*
       * If the (internally known) ThreadLocal named "DataSerializer.DISALLOW_JAVA_SERIALIZATION" is
       * set, then an exception will be thrown if we try to do standard Java Serialization. This is
       * used to catch Java serialization early for the case where the data is being sent to a
       * non-Java client
       */
        if (disallowJavaSerialization() && o instanceof Serializable) {
            throw new NotSerializableException(LocalizedStrings.DataSerializer_0_IS_NOT_DATASERIALIZABLE_AND_JAVA_SERIALIZATION_IS_DISALLOWED.toLocalizedString(o.getClass().getName()));
        }
        writeSerializableObject(o, out);
    }
}