py4j.commands

Class ConstructorCommand

java.lang.Object

py4j.commands.AbstractCommand

py4j.commands.ConstructorCommand

All Implemented Interfaces:

Command

public class ConstructorCommand
extends AbstractCommand

A ConstructorCommand is responsible for calling the constructors of a Java class. It provides similar services to the CallCommand.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	CONSTRUCTOR_COMMAND_NAME

Fields inherited from class py4j.commands.AbstractCommand

commandName, connection, gateway

Constructor Summary

Constructors

Constructor and Description
ConstructorCommand()

Method Summary

Modifier and Type	Method and Description
void	execute(java.lang.String commandName, java.io.BufferedReader reader, java.io.BufferedWriter writer)
protected ReturnObject	invokeConstructor(java.lang.String fqn, java.util.List<java.lang.Object> arguments)

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

CONSTRUCTOR_COMMAND_NAME

public static final java.lang.String CONSTRUCTOR_COMMAND_NAME

See Also:

Constant Field Values

Constructor Detail

ConstructorCommand

public ConstructorCommand()

Method Detail

execute

public void execute(java.lang.String commandName,
                    java.io.BufferedReader reader,
                    java.io.BufferedWriter writer)
             throws Py4JException,
                    java.io.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.

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

invokeConstructor

protected ReturnObject invokeConstructor(java.lang.String fqn,
                                         java.util.List<java.lang.Object> arguments)