net.sf.jasperreports.engine.util
Class ContextClassLoaderObjectInputStream

java.lang.Object
  java.io.InputStream
      java.io.ObjectInputStream
          net.sf.jasperreports.engine.util.ContextClassLoaderObjectInputStream

All Implemented Interfaces:

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

public class ContextClassLoaderObjectInputStream
extends java.io.ObjectInputStream

A subclass of ObjectInputStream that uses the context class loader to resolve classes encountered in the input stream.

Version:

$Id: ContextClassLoaderObjectInputStream.java 4595 2011-09-08 15:55:10Z teodord $

Author:

Lucian Chirita (lucianc@users.sourceforge.net)

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

ContextClassLoaderObjectInputStream(java.io.InputStream in)
Creates an object input stream that reads data from the specified InputStream.

Method Summary

protected java.lang.Class<?>	resolveClass(java.io.ObjectStreamClass desc) .classpath Calls super.resolveClass() and in case this fails with ClassNotFoundException attempts to load the class using the context class loader.
protected java.lang.Object	resolveObject(java.lang.Object obj) Calls super.resolveObject() and in case the object is a java.awt.Font, it look up for it is fails with ClassNotFoundException attempts to load the class using the context 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, 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

ContextClassLoaderObjectInputStream

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

Creates an object input stream that reads data from the specified InputStream.

Parameters:

in - the input stream to read data from

Throws:

java.io.IOException

See Also:

ObjectInputStream.ObjectInputStream(InputStream)

Method Detail

resolveClass

protected java.lang.Class<?> resolveClass(java.io.ObjectStreamClass desc)
                                   throws java.io.IOException,
                                          java.lang.ClassNotFoundException

.classpath Calls super.resolveClass() and in case this fails with ClassNotFoundException attempts to load the class using the context class loader.

Overrides:

resolveClass in class java.io.ObjectInputStream

Throws:

java.io.IOException

java.lang.ClassNotFoundException

resolveObject

protected java.lang.Object resolveObject(java.lang.Object obj)
                                  throws java.io.IOException

Calls super.resolveObject() and in case the object is a java.awt.Font, it look up for it is fails with ClassNotFoundException attempts to load the class using the context class loader.

Overrides:

resolveObject in class java.io.ObjectInputStream

Throws:

java.io.IOException