py4j.commands

Class MemoryCommand

java.lang.Object

py4j.commands.AbstractCommand

py4j.commands.MemoryCommand

All Implemented Interfaces:

Command

public class MemoryCommand
extends AbstractCommand

The MemoryCommand is responsible for handling garbage collection requests from the Python side, i.e., when a java object is no longer used by the Python program.

Author:

Barthelemy Dagenais

Field Summary

Fields

Modifier and Type	Field and Description
static String	MEMORY_COMMAND_NAME
static String	MEMORY_DEL_SUB_COMMAND_NAME

Fields inherited from class py4j.commands.AbstractCommand

commandName, connection, gateway

Constructor Summary

Constructors

Constructor and Description
MemoryCommand()

Method Summary

Modifier and Type	Method and Description
void	execute(String commandName, BufferedReader reader, BufferedWriter writer)

Methods inherited from class py4j.commands.AbstractCommand

getArguments, getCommandName, getStringArguments, init, invokeMethod

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

MEMORY_COMMAND_NAME

public static final String MEMORY_COMMAND_NAME

See Also:

Constant Field Values

MEMORY_DEL_SUB_COMMAND_NAME

public static final String MEMORY_DEL_SUB_COMMAND_NAME

See Also:

Constant Field Values

Constructor Detail

MemoryCommand

public MemoryCommand()

Method Detail

execute

public void execute(String commandName,
                    BufferedReader reader,
                    BufferedWriter writer)
             throws Py4JException,
                    IOException

Specified by:

execute in interface Command

Specified by:

execute in class AbstractCommand

Parameters:

commandName - The command name that was extracted of the command.

reader - The reader from which to read the command parts. Each command part are expected to be on a separate line and readable through BufferedReader.readLine().

writer - The writer to which the return value should be written.

Throws:

Py4JException - If an error occurs while executing the command. All exceptions except IOException caused by the reader and the writer should be wrapper in a Py4JException instance.

IOException - If an error occurs while using the reader or the writer.