public class ReflectionCommand extends AbstractCommand
The ReflectionCommand is responsible for accessing packages, classes, and static members. This is the command invoked when using the jvm property of a JavaGateway on the Python side.
Modifier and Type | Field and Description |
---|---|
static char |
GET_JAVA_LANG_CLASS_SUB_COMMAND_NAME |
static char |
GET_MEMBER_SUB_COMMAND_NAME |
static char |
GET_UNKNOWN_SUB_COMMAND_NAME |
static java.lang.String |
REFLECTION_COMMAND_NAME |
protected ReflectionEngine |
rEngine |
commandName, connection, gateway
Constructor and Description |
---|
ReflectionCommand() |
Modifier and Type | Method and Description |
---|---|
void |
execute(java.lang.String commandName,
java.io.BufferedReader reader,
java.io.BufferedWriter writer) |
void |
init(Gateway gateway,
Py4JServerConnection connection)
Called when a command instance is created and assigned to a connection.
|
getArguments, getCommandName, getStringArguments, invokeMethod
public static final char GET_UNKNOWN_SUB_COMMAND_NAME
public static final char GET_MEMBER_SUB_COMMAND_NAME
public static final char GET_JAVA_LANG_CLASS_SUB_COMMAND_NAME
public static final java.lang.String REFLECTION_COMMAND_NAME
protected ReflectionEngine rEngine
public void execute(java.lang.String commandName, java.io.BufferedReader reader, java.io.BufferedWriter writer) throws Py4JException, java.io.IOException
execute
in interface Command
execute
in class AbstractCommand
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.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.public void init(Gateway gateway, Py4JServerConnection connection)
Command
Called when a command instance is created and assigned to a connection.
init
in interface Command
init
in class AbstractCommand
connection
- the Py4JServerConnection
this socket is assigned to