Package com.vaadin.kubernetes.starter.sessiontracker.serialization

Class TransientInjectableObjectOutputStream

java.lang.Object

java.io.OutputStream

java.io.ObjectOutputStream

com.vaadin.kubernetes.starter.sessiontracker.serialization.SerializationOutputStream

com.vaadin.kubernetes.starter.sessiontracker.serialization.TransientInjectableObjectOutputStream

All Implemented Interfaces:

Closeable, DataOutput, Flushable, ObjectOutput, ObjectStreamConstants, AutoCloseable

public class TransientInjectableObjectOutputStream
extends SerializationOutputStream

An ObjectOutputStream implementation that adds to the binary stream information about transient fields that can potentially be injected on deserialization. It inspects instances of classes to get information about transient fields and related instance identifiers. When injectable transient candidates are detected, an object holding transient field details and a reference to the current instance is written into the stream. This object will then be used during deserialization to try to automatically inject values into transient fields of the deserialized object. Object inspection if performed by a pluggable TransientHandler object whose aim is to provide information about transient fields along with an object identifier for the instance being serialized, in the form of TransientDescriptor objects. To improve performance, a filter can be provided to inspect only classes known to have injectable transient fields. For example inspection can be restricted to only some packages. Classes from Java Platform are excluded regardless of the configured filters.

 
 new TransientInjectableObjectOutputStream(os, handler,
         type -> type.getPackageName().startsWith("com.vaadin.app"))
         .writeWithTransients(target);
 
 

Output of this class is meant to be read by TransientInjectableObjectInputStream.

See Also:

• TransientInjectableObjectInputStream
• TransientHandler
• TransientDescriptor

Nested Class Summary

Nested classes/interfaces inherited from class java.io.ObjectOutputStream

ObjectOutputStream.PutField

Field Summary

Fields inherited from interface java.io.ObjectStreamConstants

baseWireHandle, PROTOCOL_VERSION_1, PROTOCOL_VERSION_2, SC_BLOCK_DATA, SC_ENUM, SC_EXTERNALIZABLE, SC_SERIALIZABLE, SC_WRITE_METHOD, SERIAL_FILTER_PERMISSION, STREAM_MAGIC, STREAM_VERSION, SUBCLASS_IMPLEMENTATION_PERMISSION, SUBSTITUTION_PERMISSION, TC_ARRAY, TC_BASE, TC_BLOCKDATA, TC_BLOCKDATALONG, TC_CLASS, TC_CLASSDESC, TC_ENDBLOCKDATA, TC_ENUM, TC_EXCEPTION, TC_LONGSTRING, TC_MAX, TC_NULL, TC_OBJECT, TC_PROXYCLASSDESC, TC_REFERENCE, TC_RESET, TC_STRING

Method Summary

Modifier and Type	Method	Description
protected Object	handleNotSerializable(Object obj)	In debug mode notify handler of not Serializable Object and potentially replace current object with a serializable instance or with null, to prevent NotSerializableException and continue the inspection on other objects
static TransientInjectableObjectOutputStream	newInstance(OutputStream out, TransientHandler inspector)
static TransientInjectableObjectOutputStream	newInstance(OutputStream out, TransientHandler inspector, Predicate<Class<?>> injectableFilter)
protected Object	replaceObject(Object obj)
protected void	writeClassDescriptor(ObjectStreamClass desc)
void	writeWithTransients(Object object)

Methods inherited from class java.io.ObjectOutputStream

annotateClass, annotateProxyClass, close, defaultWriteObject, drain, enableReplaceObject, flush, putFields, reset, useProtocolVersion, write, write, write, writeBoolean, writeByte, writeBytes, writeChar, writeChars, writeDouble, writeFields, writeFloat, writeInt, writeLong, writeObject, writeObjectOverride, writeShort, writeStreamHeader, writeUnshared, writeUTF

Methods inherited from class java.io.OutputStream

nullOutputStream

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

newInstance

public static TransientInjectableObjectOutputStream newInstance(OutputStream out,
 TransientHandler inspector)
                                                         throws IOException

Throws:

IOException

newInstance

public static TransientInjectableObjectOutputStream newInstance(OutputStream out,
 TransientHandler inspector,
 Predicate<Class<?>> injectableFilter)
                                                         throws IOException

Throws:

IOException

writeWithTransients

public void writeWithTransients(Object object)
                         throws IOException

Specified by:

writeWithTransients in class SerializationOutputStream

Throws:

IOException

writeClassDescriptor

protected void writeClassDescriptor(ObjectStreamClass desc)
                             throws IOException

Overrides:

writeClassDescriptor in class ObjectOutputStream

Throws:

IOException

replaceObject

protected Object replaceObject(Object obj)

Overrides:

replaceObject in class ObjectOutputStream

handleNotSerializable

protected Object handleNotSerializable(Object obj)

In debug mode notify handler of not Serializable Object and potentially replace current object with a serializable instance or with null, to prevent NotSerializableException and continue the inspection on other objects