org.jbpm.util
Class CustomLoaderObjectInputStream

java.lang.Object
  java.io.InputStream
      java.io.ObjectInputStream
          org.jbpm.util.CustomLoaderObjectInputStream

All Implemented Interfaces:

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

public class CustomLoaderObjectInputStream
extends java.io.ObjectInputStream

Specialized object input stream that allows classes to be fetched through a custom class loader if the stream is unable to resolve them in the usual manner.

Author:

Alejandro Guizar

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

protected	CustomLoaderObjectInputStream() Provide a way for subclasses to not have to allocate private data just used by the platform's implementation of ObjectInputStream.
	CustomLoaderObjectInputStream(java.io.InputStream in) Creates a CustomLoaderObjectInputStream that reads from the specified input stream and resolves classes using the context class loader.
	CustomLoaderObjectInputStream(java.io.InputStream in, java.lang.ClassLoader customLoader) Creates a CustomLoaderObjectInputStream that reads from the specified input stream and resolves classes using the given class loader.

Method Summary

java.lang.ClassLoader	getCustomLoader() Returns the loader used by this stream for resolving classes.
protected java.lang.Class	resolveClass(java.io.ObjectStreamClass desc)
protected java.lang.Class	resolveProxyClass(java.lang.String[] interfaces)

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

CustomLoaderObjectInputStream

protected CustomLoaderObjectInputStream()
                                 throws java.io.IOException

Provide a way for subclasses to not have to allocate private data just used by the platform's implementation of ObjectInputStream.

Throws:

java.io.IOException - if an I/O error occurs

CustomLoaderObjectInputStream

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

Creates a CustomLoaderObjectInputStream that reads from the specified input stream and resolves classes using the context class loader.

Parameters:

in - input stream to read from

Throws:

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

java.lang.SecurityException - if untrusted subclass illegally overrides security-sensitive methods; note that this class does not override said methods

CustomLoaderObjectInputStream

public CustomLoaderObjectInputStream(java.io.InputStream in,
                                     java.lang.ClassLoader customLoader)
                              throws java.io.IOException

Creates a CustomLoaderObjectInputStream that reads from the specified input stream and resolves classes using the given class loader.

Parameters:

in - input stream to read from

customLoader - the loader to use for resolving classes

Throws:

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

java.lang.IllegalArgumentException - if customLoader is null

java.lang.SecurityException - if untrusted subclass illegally overrides security-sensitive methods; note that this class does not override said methods

Method Detail

getCustomLoader

public java.lang.ClassLoader getCustomLoader()

Returns the loader used by this stream for resolving classes.

resolveClass

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

Overrides:

resolveClass in class java.io.ObjectInputStream

Throws:

java.io.IOException

java.lang.ClassNotFoundException

resolveProxyClass

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

Overrides:

resolveProxyClass in class java.io.ObjectInputStream

Throws:

java.io.IOException

java.lang.ClassNotFoundException