org.atmosphere.util
Class IntrospectionUtils

java.lang.Object
  org.atmosphere.util.IntrospectionUtils

public final class IntrospectionUtils
extends Object

Utils for introspection and reflection

Nested Class Summary

static interface	IntrospectionUtils.AttributeHolder
static interface	IntrospectionUtils.PropertySource

Constructor Summary

IntrospectionUtils()

Method Summary

static void	addJarsFromClassPath(Vector<URL> jars, String cp) Add elements from the classpath cp to a Vector jars as file URLs (We use Vector for JDK 1.1 compat).
static boolean	addProperty(Object o, String name, String value)
static void	addToClassPath(Vector<URL> cpV, String dir) Add all the jar files in a dir to the classpath, represented as a Vector of URLs.
static void	addToolsJar(Vector<URL> v)
static void	callMain(Class<?> c, String[] args)
static Object	callMethod0(Object target, String methodN)
static Object	callMethod1(Object target, String methodN, Object param1, String typeParam1, ClassLoader cl)
static Object	callMethodN(Object target, String methodN, Object[] params, Class<?>[] typeParams)
static String	capitalize(String name) Reverse of Introspector.decapitalize
static void	clear()
static Object	convert(String object, Class<?> paramType)
static void	execute(Object proxy, String method) Call execute() - any ant-like task should work
static String[]	findBooleanSetters(Class<?> c)
static Method	findMethod(Class<?> c, String name, Class<?>[] params)
static Method[]	findMethods(Class<?> c)
static String[]	findVoidSetters(Class<?> c)
static Object	getAttribute(Object proxy, String name) Call void getAttribute( String )
static URL[]	getClassPath(String dir, String cpath, String cpathProp, boolean addTools) Construct a URL classpath from files in a directory, a cpath property, and tools.jar.
static URL[]	getClassPath(Vector<URL> v) Return a URL[] that can be used to construct a class loader
static String[]	getFilesByExt(String ld, String ext) Return all files with a given extension in a dir
static Object	getProperty(Object object, String name)
static URL	getURL(String base, String file) Construct a file url from a file, using a base dir
static ClassLoader	getURLClassLoader(URL[] urls, ClassLoader parent) Construct a URLClassLoader.
static boolean	hasHook(Object obj, String methodN) Test if the object implements a particular method
static boolean	invokeProperty(Object object, String setter, String name, String value)
static boolean	processArgs(Object proxy, String[] args)
static boolean	processArgs(Object proxy, String[] args, String[] args0, String[] args1, Hashtable<String,String> aliases)
static String	replaceProperties(String value, Hashtable<String,String> staticProp, IntrospectionUtils.PropertySource[] dynamicProp) Replace ${NAME} with the property value
static void	setAttribute(Object proxy, String name, Object value) Call void setAttribute( String ,Object )
static void	setProperty(Object object, String name)
static boolean	setProperty(Object o, String name, String value) Find a method with the right name If found, call the method ( if param is int or boolean we'll convert value to the right type before) - that means you can have setDebug(1).
static String	unCapitalize(String name)

Methods inherited from class java.lang.Object

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

Constructor Detail

IntrospectionUtils

public IntrospectionUtils()

Method Detail

execute

public static void execute(Object proxy,
                           String method)
                    throws Exception

Call execute() - any ant-like task should work

Throws:

Exception

setAttribute

public static void setAttribute(Object proxy,
                                String name,
                                Object value)
                         throws Exception

Call void setAttribute( String ,Object )

Throws:

Exception

getAttribute

public static Object getAttribute(Object proxy,
                                  String name)
                           throws Exception

Call void getAttribute( String )

Throws:

Exception

getURLClassLoader

public static ClassLoader getURLClassLoader(URL[] urls,
                                            ClassLoader parent)

Construct a URLClassLoader. Will compile and work in JDK1.1 too.

setProperty

public static final boolean setProperty(Object o,
                                        String name,
                                        String value)

Find a method with the right name If found, call the method ( if param is int or boolean we'll convert value to the right type before) - that means you can have setDebug(1).

addProperty

public static final boolean addProperty(Object o,
                                        String name,
                                        String value)

invokeProperty

public static final boolean invokeProperty(Object object,
                                           String setter,
                                           String name,
                                           String value)

getProperty

public static Object getProperty(Object object,
                                 String name)

setProperty

public static void setProperty(Object object,
                               String name)

replaceProperties

public static String replaceProperties(String value,
                                       Hashtable<String,String> staticProp,
                                       IntrospectionUtils.PropertySource[] dynamicProp)

Replace ${NAME} with the property value

capitalize

public static String capitalize(String name)

Reverse of Introspector.decapitalize

unCapitalize

public static String unCapitalize(String name)

addToClassPath

public static void addToClassPath(Vector<URL> cpV,
                                  String dir)

Add all the jar files in a dir to the classpath, represented as a Vector of URLs.

addToolsJar

public static void addToolsJar(Vector<URL> v)

getFilesByExt

public static String[] getFilesByExt(String ld,
                                     String ext)

Return all files with a given extension in a dir

getURL

public static URL getURL(String base,
                         String file)

Construct a file url from a file, using a base dir

addJarsFromClassPath

public static void addJarsFromClassPath(Vector<URL> jars,
                                        String cp)
                                 throws IOException,
                                        MalformedURLException

Add elements from the classpath cp to a Vector jars as file URLs (We use Vector for JDK 1.1 compat).

Parameters:

jars - The jar list

cp - a String classpath of directory or jar file elements separated by path.separator delimiters.

Throws:

IOException - If an I/O error occurs

MalformedURLException - Doh ;)

getClassPath

public static URL[] getClassPath(Vector<URL> v)

Return a URL[] that can be used to construct a class loader

getClassPath

public static URL[] getClassPath(String dir,
                                 String cpath,
                                 String cpathProp,
                                 boolean addTools)
                          throws IOException,
                                 MalformedURLException

Construct a URL classpath from files in a directory, a cpath property, and tools.jar.

Throws:

IOException

MalformedURLException

processArgs

public static boolean processArgs(Object proxy,
                                  String[] args)
                           throws Exception

Throws:

Exception

processArgs

public static boolean processArgs(Object proxy,
                                  String[] args,
                                  String[] args0,
                                  String[] args1,
                                  Hashtable<String,String> aliases)
                           throws Exception

Throws:

Exception

clear

public static void clear()

findVoidSetters

public static String[] findVoidSetters(Class<?> c)

findBooleanSetters

public static String[] findBooleanSetters(Class<?> c)

findMethods

public static Method[] findMethods(Class<?> c)

findMethod

public static Method findMethod(Class<?> c,
                                String name,
                                Class<?>[] params)

hasHook

public static boolean hasHook(Object obj,
                              String methodN)

Test if the object implements a particular method

callMain

public static void callMain(Class<?> c,
                            String[] args)
                     throws Exception

Throws:

Exception

callMethod1

public static Object callMethod1(Object target,
                                 String methodN,
                                 Object param1,
                                 String typeParam1,
                                 ClassLoader cl)
                          throws Exception

Throws:

Exception

callMethod0

public static Object callMethod0(Object target,
                                 String methodN)
                          throws Exception

Throws:

Exception

callMethodN

public static Object callMethodN(Object target,
                                 String methodN,
                                 Object[] params,
                                 Class<?>[] typeParams)
                          throws Exception

Throws:

Exception

convert

public static Object convert(String object,
                             Class<?> paramType)