org.apache.catalina.util
Class CustomObjectInputStream

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

All Implemented Interfaces:

Closeable, DataInput, ObjectInput, ObjectStreamConstants

public final class CustomObjectInputStream
extends 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:

$Id: CustomObjectInputStream.java 987920 2010-08-22 15:34:34Z markt $

Author:

Craig R. McClanahan, Bip Thelin

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

CustomObjectInputStream(InputStream stream, ClassLoader classLoader)
Construct a new instance of CustomObjectInputStream

Method Summary

Class<?>	resolveClass(ObjectStreamClass classDesc) Load the local class equivalent of the specified stream class description, by using the class loader assigned to this Context.
protected Class<?>	resolveProxyClass(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(InputStream stream,
                               ClassLoader classLoader)
                        throws 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:

IOException - if an input/output error occurs

Method Detail

resolveClass

public Class<?> resolveClass(ObjectStreamClass classDesc)
                      throws ClassNotFoundException,
                             IOException

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

Overrides:

resolveClass in class ObjectInputStream

Parameters:

classDesc - Class description from the input stream

Throws:

ClassNotFoundException - if this class cannot be found

IOException - if an input/output error occurs

resolveProxyClass

protected Class<?> resolveProxyClass(String[] interfaces)
                              throws IOException,
                                     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.

Overrides:

resolveProxyClass in class ObjectInputStream

Throws:

IOException

ClassNotFoundException