org.apache.commons.io.input
Class ClassLoaderObjectInputStream

java.lang.Object
  extended by java.io.InputStream
      extended by java.io.ObjectInputStream
          extended by org.apache.commons.io.input.ClassLoaderObjectInputStream
All Implemented Interfaces:
java.io.Closeable, java.io.DataInput, java.io.ObjectInput, java.io.ObjectStreamConstants

public class ClassLoaderObjectInputStream
extends java.io.ObjectInputStream

A special ObjectInputStream that loads a class based on a specified ClassLoader rather than the system default.

This is useful in dynamic container environments.

Since:
1.1
Version:
$Id: ClassLoaderObjectInputStream.java 1304052 2012-03-22 20:55:29Z ggregory $

Nested Class Summary
 
Nested classes/interfaces inherited from class java.io.ObjectInputStream
java.io.ObjectInputStream.GetField
 
Field Summary
private  java.lang.ClassLoader classLoader
          The class loader to use.
 
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
ClassLoaderObjectInputStream(java.lang.ClassLoader classLoader, java.io.InputStream inputStream)
          Constructs a new ClassLoaderObjectInputStream.
 
Method Summary
protected  java.lang.Class<?> resolveClass(java.io.ObjectStreamClass objectStreamClass)
          Resolve a class specified by the descriptor using the specified ClassLoader or the super ClassLoader.
protected  java.lang.Class<?> resolveProxyClass(java.lang.String[] interfaces)
          Create a proxy class that implements the specified interfaces using the specified ClassLoader or the super ClassLoader.
 
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
 

Field Detail

classLoader

private final java.lang.ClassLoader classLoader
The class loader to use.

Constructor Detail

ClassLoaderObjectInputStream

public ClassLoaderObjectInputStream(java.lang.ClassLoader classLoader,
                                    java.io.InputStream inputStream)
                             throws java.io.IOException,
                                    java.io.StreamCorruptedException
Constructs a new ClassLoaderObjectInputStream.

Parameters:
classLoader - the ClassLoader from which classes should be loaded
inputStream - the InputStream to work on
Throws:
java.io.IOException - in case of an I/O error
java.io.StreamCorruptedException - if the stream is corrupted
Method Detail

resolveClass

protected java.lang.Class<?> resolveClass(java.io.ObjectStreamClass objectStreamClass)
                                   throws java.io.IOException,
                                          java.lang.ClassNotFoundException
Resolve a class specified by the descriptor using the specified ClassLoader or the super ClassLoader.

Overrides:
resolveClass in class java.io.ObjectInputStream
Parameters:
objectStreamClass - descriptor of the class
Returns:
the Class object described by the ObjectStreamClass
Throws:
java.io.IOException - in case of an I/O error
java.lang.ClassNotFoundException - if the Class cannot be found

resolveProxyClass

protected java.lang.Class<?> resolveProxyClass(java.lang.String[] interfaces)
                                        throws java.io.IOException,
                                               java.lang.ClassNotFoundException
Create a proxy class that implements the specified interfaces using the specified ClassLoader or the super ClassLoader.

Overrides:
resolveProxyClass in class java.io.ObjectInputStream
Parameters:
interfaces - the interfaces to implement
Returns:
a proxy class implementing the interfaces
Throws:
java.io.IOException - in case of an I/O error
java.lang.ClassNotFoundException - if the Class cannot be found
Since:
2.1
See Also:
ObjectInputStream.resolveProxyClass(java.lang.String[])


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