Package de.aristaflow.adept2.model.runtimeenvironment

Class ComponentObjectInputStream

java.lang.Object

java.io.InputStream

java.io.ObjectInputStream

de.aristaflow.adept2.model.runtimeenvironment.ComponentObjectInputStream

All Implemented Interfaces:

Closeable, DataInput, ObjectInput, ObjectStreamConstants, AutoCloseable

public class ComponentObjectInputStream
extends ObjectInputStream

This ObjectInputStream uses the context classloader of the current thread instead of the last used classloader like the ObjectInputStream. Executable components should always use this stream instead of ObjectInputStream or there may be trouble with the classloader, resp. the classpath of the classes required for the stream.

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
ComponentObjectInputStream(InputStream in)

Method Summary

Modifier and Type	Method	Description
static Serializable	fromInputStream(InputStream object)	Deserialises the object contained in the designated input stream.
protected ClassLoader	getLoader()	Gets the context classloader of the current thread.
protected Class<?>	resolveClass(ObjectStreamClass desc)
protected Class<?>	resolveProxyClass(String[] interfaces)

Methods inherited from class java.io.ObjectInputStream

available, close, 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, 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 Detail

ComponentObjectInputStream

public ComponentObjectInputStream(InputStream in)
                           throws IOException

Throws:

IOException

See Also:

ObjectInputStream(InputStream)

Method Detail

resolveClass

protected Class<?> resolveClass(ObjectStreamClass desc)
                         throws IOException,
                                ClassNotFoundException

Overrides:

resolveClass in class ObjectInputStream

Throws:

IOException

ClassNotFoundException

resolveProxyClass

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

Overrides:

resolveProxyClass in class ObjectInputStream

Throws:

IOException

ClassNotFoundException

getLoader

protected ClassLoader getLoader()

Gets the context classloader of the current thread. It would be great, if the superclass would directly allow to override this method.

Returns:

The context classloader of the current thread.

fromInputStream

public static final Serializable fromInputStream(InputStream object)
                                          throws IOException,
                                                 ClassNotFoundException

Deserialises the object contained in the designated input stream. This will try GZip, but switch to uncompressed deserialisation if not successful.

Parameters:

object - An input stream containing a serialised object (may be gzipped). The stream will be closed after reading.

Returns:

The serialisable object from the designated input stream.

Throws:

IOException - If there are problems when reading from the designated input stream, an IOException will be thrown.

ClassNotFoundException - If the class of the designated object cannot be found for deserialisation, a ClassNotFoundException will be thrown.