Package py4j

Interface Summary
GatewayServerListener A client can implement this listener to be notified of Gateway events.
 

Class Summary
Base64 A very fast and memory efficient class to encode and decode to and from BASE64 in full accordance with RFC 2045.

On Windows XP sp1 with 1.4.2_04 and later ;), this encoder and decoder is about 10 times faster on small arrays (10 - 1000 bytes) and 2-3 times as fast on larger arrays (10000 - 1000000 bytes) compared to sun.misc.Encoder()/Decoder().

On byte arrays the encoder is about 20% faster than Jakarta Commons Base64 Codec for encode and about 50% faster for decoding large arrays.
CallbackClient A CallbackClient is responsible for managing communication channels: channels are created as needed (e.g., one per concurrent thread) and are closed after a certain time.
CallbackConnection Default implementation of the CommunicationChannel interface using TCP sockets.
DefaultGatewayServerListener This class implements a default GatewayServerListener.
Gateway A Gateway manages various states: entryPoint, references to objects returned to a Python program, etc.
GatewayConnection Manage the connection between a Python program and a Gateway.
GatewayServer This class enables Python programs to access a Java program.
JVMView A JVM view keeps track of imports and import searches.
NetworkUtil Utility class used to perform network operations.
Protocol This class defines the protocol used to communicate between two virtual machines (e.g., Python and Java).
ReturnObject A ReturnObject wraps a value returned by a method.
StringUtil String utility class providing operations to escape and unescape new lines.
 

Exception Summary
Py4JException Exception raised when an error is encountered while using Py4J.
Py4JJavaException Exception raised when an exception is thrown in the client code.
Py4JNetworkException Exception raised when a network error is encountered while using Py4J.