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oracle.xml.parser.v2
Class XMLObjectInputStream

java.lang.Object
java.io.InputStream
java.io.ObjectInputStream
oracle.xml.parser.v2.XMLObjectInputStream

All Implemented Interfaces:

java.io.Closeable, java.io.DataInput, java.io.ObjectInput, java.io.ObjectStreamConstants

public final class XMLObjectInputStream

extends java.io.ObjectInputStream

This purpose of this class is to provide compatibility for applications between different versions of the XDK for Java, with regards to serialization and deserialization. If an XML document (using the DOM model) has been serialized with a version of the XDK for Java of 11.2.0.1 or earlier, and you want to deserialize it with a version of 11.2.0.2 or later, then you may have to use this class to do so. You will know that you must do so if you encounter java.io.InvalidClassException during deserialization, with an error message that indicates that the serialVersionUID is incompatible between the stream classdesc and the local class.

Serialization is typically done with java.io.ObjectOutputStream.writeObject(doc); and deserialization with java.io.ObjectInputStream.readObject(). This class extends the standard Java class ObjectInputStream so as to preserve compatibility.

If your application previously did deserialization by using code such as the following:

 import java.io.* ;
 import oracle.xml.parser.v2.* ;

 InputStream is = new FileInputStream( new File( "abc.dat" ) ) ;
 ObjectInputStream ois = new ObjectInputStream( is ) ;
 Object o = ois.readObject() ;
 XMLDocument xdoc = (XMLDocument) o ;
 

and you get the InvalidClassException during deserialization (i.e., in the readObject() method); then you may have to replace the constructor for ObjectInputStream with XMLObjectInputStream in your application:

 ObjectInputStream ois = new XMLObjectInputStream( is ) ;
 

Nested Class Summary

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

java.io.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

XMLObjectInputStream(java.io.InputStream in)

Method Summary

Methods inherited from class java.io.ObjectInputStream

available, close, defaultReadObject, read, read, readBoolean, readByte, readChar, readDouble, readFields, readFloat, readFully, readFully, readInt, readLine, readLong, readObject, readShort, readUnshared, readUnsignedByte, readUnsignedShort, readUTF, registerValidation, skipBytes

Methods inherited from class java.io.InputStream

mark, markSupported, read, reset, skip

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.io.ObjectInput

read, skip

Constructor Detail

XMLObjectInputStream

public XMLObjectInputStream(java.io.InputStream in)
                     throws java.io.IOException

Throws:

java.io.IOException

See Also:

ObjectInputStream.ObjectInputStream(InputStream)

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