csheets.io
Class DynamicObjectInputStream

java.lang.Object
  java.io.InputStream
      java.io.ObjectInputStream
          csheets.io.DynamicObjectInputStream

All Implemented Interfaces:

Closeable, DataInput, ObjectInput, ObjectStreamConstants

public class DynamicObjectInputStream
extends ObjectInputStream

An object input stream that resolves class descriptors through a given class loader, and thereby allowing dynamic deserialization.

Author:

Einar Pehrson

Nested Class Summary

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

ObjectInputStream.GetField

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, 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

Constructor Summary

DynamicObjectInputStream(InputStream stream, ClassLoader loader)
Creates a new dynamic object input stream.

Method Summary

protected Class<?>

resolveClass(ObjectStreamClass desc) Load the local class equivalent of the specified stream class descriptor, by first querying the given class loader.

Methods inherited from class java.io.ObjectInputStream

available, close, defaultReadObject, enableResolveObject, read, read, readBoolean, readByte, readChar, readClassDescriptor, readDouble, readFields, readFloat, readFully, readFully, readInt, readLine, readLong, readObject, readObjectOverride, readShort, readStreamHeader, readUnshared, readUnsignedByte, readUnsignedShort, readUTF, registerValidation, resolveObject, resolveProxyClass, skipBytes

Methods inherited from class java.io.InputStream

mark, markSupported, read, reset, skip

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.io.ObjectInput

read, skip

Constructor Detail

DynamicObjectInputStream

public DynamicObjectInputStream(InputStream stream,
                                ClassLoader loader)
                         throws IOException

Creates a new dynamic object input stream.

Parameters:

stream - the input stream to read from

loader - the class loader queried for class descriptor resolution

Throws:

IOException - if an I/O error occurs while reading stream header

Method Detail

resolveClass

protected Class<?> resolveClass(ObjectStreamClass desc)
                         throws IOException,
                                ClassNotFoundException

Load the local class equivalent of the specified stream class descriptor, by first querying the given class loader.

Overrides:

resolveClass in class ObjectInputStream

Parameters:

desc - the class descriptor

Throws:

IOException - if an I/O error occurs while resolving

ClassNotFoundException - if the class of a serialized object cannot be found