Package org.apache.catalina.tribes.io

Class ReplicationStream

java.lang.Object

java.io.InputStream

java.io.ObjectInputStream

org.apache.catalina.tribes.io.ReplicationStream

All Implemented Interfaces:

Closeable, DataInput, ObjectInput, ObjectStreamConstants, AutoCloseable

public final class ReplicationStream
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.

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, SERIAL_FILTER_PERMISSION, 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

Constructors

Constructor	Description
ReplicationStream(InputStream stream, ClassLoader[] classLoaders)	Construct a new instance of CustomObjectInputStream

Method Summary

Modifier and Type	Method	Description
void	close()
Class<?>	findExternalClass(String name)
Class<?>	findReplicationClass(String name)
Class<?>	resolveClass(ObjectStreamClass classDesc)	Load the local class equivalent of the specified stream class description, by using the class loader assigned to this Context.
Class<?>	resolveClass(String name)
protected Class<?>	resolveProxyClass(String[] interfaces)	ObjectInputStream.resolveProxyClass has some funky way of using the incorrect class loader to resolve proxy classes, let's do it our way instead

Methods inherited from class java.io.ObjectInputStream

available, defaultReadObject, enableResolveObject, getObjectInputFilter, read, read, readBoolean, readByte, readChar, readClassDescriptor, readDouble, readFields, readFloat, readFully, readFully, readInt, readLine, readLong, readObject, readObjectOverride, readShort, readStreamHeader, readUnshared, readUnsignedByte, readUnsignedShort, readUTF, registerValidation, resolveObject, setObjectInputFilter, skipBytes

Methods inherited from class java.io.InputStream

mark, markSupported, nullInputStream, read, readAllBytes, readNBytes, readNBytes, reset, skip, skipNBytes, transferTo

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 Details

ReplicationStream

public ReplicationStream(InputStream stream,
 ClassLoader[] classLoaders)
                  throws IOException

Construct a new instance of CustomObjectInputStream

Parameters:

stream - The input stream we will read from

classLoaders - The class loader array used to instantiate objects

Throws:

IOException - if an input/output error occurs

Method Details

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

resolveClass

public Class<?> resolveClass(String name)
                      throws ClassNotFoundException

Throws:

ClassNotFoundException

resolveProxyClass

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

ObjectInputStream.resolveProxyClass has some funky way of using the incorrect class loader to resolve proxy classes, let's do it our way instead

Overrides:

resolveProxyClass in class ObjectInputStream

Throws:

IOException

ClassNotFoundException

findReplicationClass

public Class<?> findReplicationClass(String name)
                              throws ClassNotFoundException

Throws:

ClassNotFoundException

findExternalClass

public Class<?> findExternalClass(String name)
                           throws ClassNotFoundException

Throws:

ClassNotFoundException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in interface ObjectInput

Overrides:

close in class ObjectInputStream

Throws:

IOException