org.apache.felix.service.command
Interface CommandSession

All Known Implementing Classes:

CommandSessionImpl

public interface CommandSession

Method Summary

void	close() Close this command session.
Object	convert(Class<?> type, Object instance) Convert an object to another type.
Object	execute(CharSequence commandline) Execute a program in this session.
CharSequence	format(Object target, int level) Convert an object to string form (CharSequence).
Object	get(String name) Get the value of a variable.
PrintStream	getConsole() Return the PrintStream for the console.
InputStream	getKeyboard() Return the input stream that is the first of the pipeline.
void	put(String name, Object value) Set the value of a variable.

Method Detail

execute

Object execute(CharSequence commandline)
               throws Exception

Execute a program in this session.

Parameters:

commandline -

Returns:

the result of the execution

Throws:

Exception

close

void close()

Close this command session. After the session is closed, it will throw IllegalStateException when it is used.

Parameters:

-

getKeyboard

InputStream getKeyboard()

Return the input stream that is the first of the pipeline. This stream is sometimes necessary to communicate directly to the end user. For example, a "less" or "more" command needs direct input from the keyboard to control the paging.

Returns:

InpuStream used closest to the user or null if input is from a file.

getConsole

PrintStream getConsole()

Return the PrintStream for the console. This must always be the stream "closest" to the user. This stream can be used to post messages that bypass the piping. If the output is piped to a file, then the object returned must be null.

Returns:

get

Object get(String name)

Get the value of a variable.

Parameters:

name -

Returns:

put

void put(String name,
         Object value)

Set the value of a variable.

Parameters:

name - Name of the variable.

value - Value of the variable

format

CharSequence format(Object target,
                    int level)

Convert an object to string form (CharSequence). The level is defined in the Converter interface, it can be one of INSPECT, LINE, PART. This function always returns a non null value. As a last resort, toString is called on the Object.

Parameters:

target -

level -

Returns:

convert

Object convert(Class<?> type,
               Object instance)

Convert an object to another type.