Package org.apache.felix.gogo.runtime

Class Reflective

java.lang.Object

org.apache.felix.gogo.runtime.Reflective

public final class Reflective
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final Set<String>	KEYWORDS
static final String	MAIN
static final Object	NO_MATCH

Constructor Summary

Constructors

Constructor	Description
Reflective()

Method Summary

Modifier and Type	Method	Description
static Object	coerce(CommandSession session, Class<?> type, Object arg, int[] convert)	converts given argument to specified type and increments convert[0] if any conversion was needed.
private static int	coerce(CommandSession session, Object target, Method m, Class<?>[] types, Object[] out, List<Object> in)	Complex routein to convert the arguments given from the command line to the arguments of the method call.
private static int	docoerce(CommandSession session, Object target, Method m, Class<?>[] types, Object[] out, List<Object> in)
static Object	invoke(CommandSession session, Object target, String name, List<Object> args)	invokes the named method on the given target using the supplied args, which are converted if necessary.
private static Class<?>	primitiveToObject(Class<?> type)
private static String	toString(Object arg)
private static List<Object>	transformParameters(Method method, List<Object> in)	transform name/value parameters into ordered argument list.
private static void	writeValue(StringBuilder sb, Object o)

Methods inherited from class java.lang.Object

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

Field Details

NO_MATCH

public static final Object NO_MATCH

MAIN

public static final String MAIN

See Also:

• Constant Field Values

KEYWORDS

public static final Set<String> KEYWORDS

Constructor Details

Reflective

public Reflective()

Method Details

invoke

public static Object invoke(CommandSession session,
 Object target,
 String name,
 List<Object> args)
                     throws Exception

invokes the named method on the given target using the supplied args, which are converted if necessary.

Parameters:

session - the session

target - the target

name - the name

args - the args

Returns:

the result of the invoked method

Throws:

Exception - on exception

transformParameters

private static List<Object> transformParameters(Method method,
 List<Object> in)

transform name/value parameters into ordered argument list. params: --param2, value2, --flag1, arg3 args: true, value2, arg3

Returns:

new ordered list of args.

coerce

private static int coerce(CommandSession session,
 Object target,
 Method m,
 Class<?>[] types,
 Object[] out,
 List<Object> in)

Complex routein to convert the arguments given from the command line to the arguments of the method call. First, an attempt is made to convert each argument. If this fails, a check is made to see if varargs can be applied. This happens when the last method argument is an array.

Returns:

-1 if arguments can't be coerced; 0 if no coercion was necessary; > 0 if coercion was needed.

docoerce

private static int docoerce(CommandSession session,
 Object target,
 Method m,
 Class<?>[] types,
 Object[] out,
 List<Object> in)

coerce

public static Object coerce(CommandSession session,
 Class<?> type,
 Object arg,
 int[] convert)

converts given argument to specified type and increments convert[0] if any conversion was needed.

Parameters:

session - the session

type - the type

arg - the arg

convert - convert[0] is incremented according to the conversion needed, to allow the "best" conversion to be determined.

Returns:

converted arg or NO_MATCH if no conversion possible.

toString

private static String toString(Object arg)

writeValue

private static void writeValue(StringBuilder sb,
 Object o)

primitiveToObject

private static Class<?> primitiveToObject(Class<?> type)