org.apache.catalina.util
Class CustomObjectInputStream

java.lang.Object
  java.io.InputStream
      java.io.ObjectInputStream
          org.apache.catalina.util.CustomObjectInputStream

All Implemented Interfaces:

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

public final class CustomObjectInputStream

extends java.io.ObjectInputStream

Custom subclass of ObjectInputStream that loads from the class loader for this web application. This allows classes defined only with the web application to be found correctly.

Version:

$Revision: 466595 $, $Date: 2006-10-21 23:24:41 +0100 (Sat, 21 Oct 2006) $

Author:

Craig R. McClanahan, Bip Thelin

Nested Class Summary

Nested classes 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_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_EXCEPTION, TC_LONGSTRING, TC_MAX, TC_NULL, TC_OBJECT, TC_PROXYCLASSDESC, TC_REFERENCE, TC_RESET, TC_STRING

Constructor Summary

CustomObjectInputStream(java.io.InputStream stream, java.lang.ClassLoader classLoader)
Construct a new instance of CustomObjectInputStream

Method Summary

java.lang.Class	resolveClass(java.io.ObjectStreamClass classDesc) Load the local class equivalent of the specified stream class description, by using the class loader assigned to this Context.
protected java.lang.Class	resolveProxyClass(java.lang.String[] interfaces) Return a proxy class that implements the interfaces named in a proxy class descriptor.

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, 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

CustomObjectInputStream

public CustomObjectInputStream(java.io.InputStream stream,
                               java.lang.ClassLoader classLoader)
                        throws java.io.IOException

Construct a new instance of CustomObjectInputStream

Parameters:

stream - The input stream we will read from

classLoader - The class loader used to instantiate objects

Throws:

java.io.IOException - if an input/output error occurs

Method Detail

resolveClass

public java.lang.Class resolveClass(java.io.ObjectStreamClass classDesc)
                             throws java.lang.ClassNotFoundException,
                                    java.io.IOException

Load the local class equivalent of the specified stream class description, by using the class loader assigned to this Context.

Parameters:

classDesc - Class description from the input stream

Throws:

java.lang.ClassNotFoundException - if this class cannot be found

java.io.IOException - if an input/output error occurs

resolveProxyClass

protected java.lang.Class resolveProxyClass(java.lang.String[] interfaces)
                                     throws java.io.IOException,
                                            java.lang.ClassNotFoundException

Return a proxy class that implements the interfaces named in a proxy class descriptor. Do this using the class loader assigned to this Context.

Throws:

java.io.IOException

java.lang.ClassNotFoundException