Class Methods

java.lang.Object

org.monte.media.util.Methods

public class Methods
extends Object

Methods contains convenience methods for method invocations using java.lang.reflect.

Author:

Werner Randelshofer

Method Summary

Modifier and Type	Method	Description
static Object	invoke(Object obj, String methodName)	Invokes the specified accessible parameterless method if it exists.
static Object	invoke(Object obj, String methodName, boolean newValue)	Invokes the specified setter method if it exists.
static Object	invoke(Object obj, String methodName, float newValue)	Invokes the specified setter method if it exists.
static Object	invoke(Object obj, String methodName, int newValue)	Invokes the specified method if it exists.
static Object	invoke(Object obj, String methodName, Class<?>[] clazz, Object... newValue)	Invokes the specified setter method if it exists.
static Object	invoke(Object obj, String methodName, Class<?> clazz, Object newValue)	Invokes the specified setter method if it exists.
static Object	invoke(Object obj, String methodName, String stringParameter)	Invokes the specified accessible method with a string parameter if it exists.
static boolean	invokeGetter(Object obj, String methodName, boolean defaultValue)	Invokes the specified getter method if it exists.
static int	invokeGetter(Object obj, String methodName, int defaultValue)	Invokes the specified getter method if it exists.
static long	invokeGetter(Object obj, String methodName, long defaultValue)	Invokes the specified getter method if it exists.
static Object	invokeGetter(Object obj, String methodName, Object defaultValue)	Invokes the specified getter method if it exists.
static void	invokeIfExists(Object obj, String methodName)	Invokes the specified setter method if it exists.
static void	invokeIfExists(Object obj, String methodName, boolean newValue)	Invokes the specified method if it exists.
static void	invokeIfExists(Object obj, String methodName, float newValue)	Invokes the specified setter method if it exists.
static void	invokeIfExists(Object obj, String methodName, Class<?> clazz, Object newValue)	Invokes the specified setter method if it exists.
static void	invokeIfExistsWithEnum(Object obj, String methodName, String enumClassName, String enumValueName)	Invokes the specified setter method if it exists.
static Object	invokeStatic(Class<?> clazz, String methodName)	Invokes the specified accessible parameterless method if it exists.
static Object	invokeStatic(Class<?> clazz, String methodName, Class<?>[] types, Object[] values)	Invokes a static method on the specified class with the given parameter types and values.
static Object	invokeStatic(Class<?> clazz, String methodName, Class<?> type, Object value)	Invokes the specified method with a single parameter if it exists.
static Object	invokeStatic(String clazz, String methodName)	Invokes the specified accessible parameterless method if it exists.
static Object	invokeStatic(String clazz, String methodName, Class<?>[] types, Object[] values)	Invokes the specified parameterless method if it exists.
static Object	invokeStatic(String clazz, String methodName, Class<?>[] types, Object[] values, Object defaultValue)	Invokes the specified parameterless method if it exists.
static boolean	invokeStaticGetter(Class<?> clazz, String methodName, boolean defaultValue)	Invokes the specified getter method if it exists.

Methods inherited from class java.lang.Object

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

Method Details

invoke

public static Object invoke(Object obj,
 String methodName)
                     throws NoSuchMethodException

Invokes the specified accessible parameterless method if it exists.

Parameters:

obj - The object on which to invoke the method.

methodName - The name of the method.

Returns:

The return value of the method.

Throws:

NoSuchMethodException - if the method does not exist or is not accessible.

invoke

public static Object invoke(Object obj,
 String methodName,
 String stringParameter)
                     throws NoSuchMethodException

Invokes the specified accessible method with a string parameter if it exists.

Parameters:

obj - The object on which to invoke the method.

methodName - The name of the method.

stringParameter - The String parameter.

Returns:

The return value of the method.

Throws:

NoSuchMethodException - if the method does not exist or is not accessible.

invokeStatic

public static Object invokeStatic(Class<?> clazz,
 String methodName)
                           throws NoSuchMethodException

Invokes the specified accessible parameterless method if it exists.

Parameters:

clazz - The class on which to invoke the method.

methodName - The name of the method.

Returns:

The return value of the method.

Throws:

NoSuchMethodException - if the method does not exist or is not accessible.

invokeStatic

public static Object invokeStatic(String clazz,
 String methodName)
                           throws NoSuchMethodException

Invokes the specified accessible parameterless method if it exists.

Parameters:

clazz - The class on which to invoke the method.

methodName - The name of the method.

Returns:

The return value of the method.

Throws:

NoSuchMethodException - if the method does not exist or is not accessible.

invokeStatic

public static Object invokeStatic(Class<?> clazz,
 String methodName,
 Class<?> type,
 Object value)
                           throws NoSuchMethodException

Invokes the specified method with a single parameter if it exists.

Parameters:

clazz - The class on which to invoke the method.

methodName - The name of the method.

type - The parameter type.

value - The parameter value.

Returns:

The return value of the method.

Throws:

NoSuchMethodException - if the method does not exist or is not accessible.

invokeStatic

public static Object invokeStatic(Class<?> clazz,
 String methodName,
 Class<?>[] types,
 Object[] values)
                           throws NoSuchMethodException

Invokes a static method on the specified class with the given parameter types and values.

Parameters:

clazz - The class on which to invoke the method.

methodName - The name of the method to invoke.

types - The parameter types of the method.

values - The parameter values to pass to the method.

Returns:

The return value of the invoked method.

Throws:

NoSuchMethodException - if the method does not exist or is not accessible.

invokeStatic

public static Object invokeStatic(String clazz,
 String methodName,
 Class<?>[] types,
 Object[] values)
                           throws NoSuchMethodException

Invokes the specified parameterless method if it exists.

Parameters:

clazz - The class on which to invoke the method.

methodName - The name of the method.

types - The parameter types.

values - The parameter values.

Returns:

The return value of the method.

Throws:

NoSuchMethodException - if the method does not exist or is not accessible.

invokeStatic

public static Object invokeStatic(String clazz,
 String methodName,
 Class<?>[] types,
 Object[] values,
 Object defaultValue)

Invokes the specified parameterless method if it exists.

Parameters:

clazz - The class on which to invoke the method.

methodName - The name of the method.

types - The parameter types.

values - The parameter values.

defaultValue - The default value.

Returns:

The return value of the method or the default value if the method does not exist or is not accessible.

invokeGetter

public static int invokeGetter(Object obj,
 String methodName,
 int defaultValue)

Invokes the specified getter method if it exists.

Parameters:

obj - The object on which to invoke the method.

methodName - The name of the method.

defaultValue - This value is returned, if the method does not exist.

Returns:

The value returned by the getter method or the default value.

invokeGetter

public static long invokeGetter(Object obj,
 String methodName,
 long defaultValue)

Invokes the specified getter method if it exists.

Parameters:

obj - The object on which to invoke the method.

methodName - The name of the method.

defaultValue - This value is returned, if the method does not exist.

Returns:

The value returned by the getter method or the default value.

invokeGetter

public static boolean invokeGetter(Object obj,
 String methodName,
 boolean defaultValue)

Invokes the specified getter method if it exists.

Parameters:

obj - The object on which to invoke the method.

methodName - The name of the method.

defaultValue - This value is returned, if the method does not exist.

Returns:

The value returned by the getter method or the default value.

invokeGetter

public static Object invokeGetter(Object obj,
 String methodName,
 Object defaultValue)

Invokes the specified getter method if it exists.

Parameters:

obj - The object on which to invoke the method.

methodName - The name of the method.

defaultValue - This value is returned, if the method does not exist.

Returns:

The value returned by the getter method or the default value.

invokeStaticGetter

public static boolean invokeStaticGetter(Class<?> clazz,
 String methodName,
 boolean defaultValue)

Invokes the specified getter method if it exists.

Parameters:

clazz - The object on which to invoke the method.

methodName - The name of the method.

defaultValue - This value is returned, if the method does not exist.

Returns:

The value returned by the getter method or the default value.

invoke

public static Object invoke(Object obj,
 String methodName,
 boolean newValue)
                     throws NoSuchMethodException

Invokes the specified setter method if it exists.

Parameters:

obj - The object on which to invoke the method.

methodName - The name of the method.

Throws:

NoSuchMethodException

invoke

public static Object invoke(Object obj,
 String methodName,
 int newValue)
                     throws NoSuchMethodException

Invokes the specified method if it exists.

Parameters:

obj - The object on which to invoke the method.

methodName - The name of the method.

Throws:

NoSuchMethodException

invoke

public static Object invoke(Object obj,
 String methodName,
 float newValue)
                     throws NoSuchMethodException

Invokes the specified setter method if it exists.

Parameters:

obj - The object on which to invoke the method.

methodName - The name of the method.

Throws:

NoSuchMethodException

invoke

public static Object invoke(Object obj,
 String methodName,
 Class<?> clazz,
 Object newValue)
                     throws NoSuchMethodException

Invokes the specified setter method if it exists.

Parameters:

obj - The object on which to invoke the method.

methodName - The name of the method.

Throws:

NoSuchMethodException

invoke

public static Object invoke(Object obj,
 String methodName,
 Class<?>[] clazz,
 Object... newValue)
                     throws NoSuchMethodException

Invokes the specified setter method if it exists.

Parameters:

obj - The object on which to invoke the method.

methodName - The name of the method.

Throws:

NoSuchMethodException

invokeIfExists

public static void invokeIfExists(Object obj,
 String methodName)

Invokes the specified setter method if it exists.

Parameters:

obj - The object on which to invoke the method.

methodName - The name of the method.

invokeIfExists

public static void invokeIfExists(Object obj,
 String methodName,
 float newValue)

Invokes the specified setter method if it exists.

Parameters:

obj - The object on which to invoke the method.

methodName - The name of the method.

invokeIfExists

public static void invokeIfExists(Object obj,
 String methodName,
 boolean newValue)

Invokes the specified method if it exists.

Parameters:

obj - The object on which to invoke the method.

methodName - The name of the method.

invokeIfExists

public static void invokeIfExists(Object obj,
 String methodName,
 Class<?> clazz,
 Object newValue)

Invokes the specified setter method if it exists.

Parameters:

obj - The object on which to invoke the method.

methodName - The name of the method.

invokeIfExistsWithEnum

public static void invokeIfExistsWithEnum(Object obj,
 String methodName,
 String enumClassName,
 String enumValueName)

Invokes the specified setter method if it exists.

Parameters:

obj - The object on which to invoke the method.

methodName - The name of the method.