org.asteriskjava.util

Class ReflectionUtil

java.lang.Object

org.asteriskjava.util.ReflectionUtil

public class ReflectionUtil
extends Object

Utility class that provides helper methods for reflection that is used by the fastagi and manager packages to access getter and setter methods.

Client code is not supposed to use this class.

Author:

srt

Method Summary

Modifier and Type	Method and Description
static Map<String,Method>	getGetters(Class<?> clazz) Returns a Map of getter methods of the given class.
static Map<String,Method>	getSetters(Class<?> clazz) Returns a Map of setter methods of the given class.
static boolean	isClassAvailable(String s) Checks if the class is available on the current thread's context class loader.
static Object	newInstance(String s) Creates a new instance of the given class.
static String	stripIllegalCharacters(String s) Strips all illegal charaters from the given lower case string.

Methods inherited from class java.lang.Object

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

Method Detail

getGetters

public static Map<String,Method> getGetters(Class<?> clazz)

Returns a Map of getter methods of the given class.

The key of the map contains the name of the attribute that can be accessed by the getter, the value the getter itself (an instance of java.lang.reflect.Method). A method is considered a getter if its name starts with "get", it is declared public and takes no arguments.

Parameters:

clazz - the class to return the getters for

Returns:

a Map of attributes and their accessor methods (getters)

getSetters

public static Map<String,Method> getSetters(Class<?> clazz)

Returns a Map of setter methods of the given class.

The key of the map contains the name of the attribute that can be accessed by the setter, the value the setter itself (an instance of java.lang.reflect.Method). A method is considered a setter if its name starts with "set", it is declared public and takes exactly one argument.

Parameters:

clazz - the class to return the setters for

Returns:

a Map of attributes and their accessor methods (setters)

stripIllegalCharacters

public static String stripIllegalCharacters(String s)

Strips all illegal charaters from the given lower case string. Illegal characters are all characters that are neither characters ('a' to 'z') nor digits ('0' to '9').

Parameters:

s - the original string

Returns:

the string with all illegal characters stripped

isClassAvailable

public static boolean isClassAvailable(String s)

Checks if the class is available on the current thread's context class loader.

Parameters:

s - fully qualified name of the class to check.

Returns:

true if the class is available, false otherwise.

newInstance

public static Object newInstance(String s)

Creates a new instance of the given class. The class is loaded using the current thread's context class loader and instantiated using its default constructor.

Parameters:

s - fully qualified name of the class to instantiate.

Returns:

the new instance or null on failure.