Class IntrospectionUtils

java.lang.Object
org.apache.commons.modeler.util.IntrospectionUtils
public final class IntrospectionUtils extends Object
Utils for introspection and reflection Source: jakarta-tomcat-connector/util

  • Field Details

    • NO_PARAMS

      static final Class[] NO_PARAMS

    • STRING_OBJ_PARAM

      static final Class[] STRING_OBJ_PARAM

    • STRING_PARAM

      static final Class[] STRING_PARAM

    • PATH_SEPARATOR

      public static String PATH_SEPARATOR

    • objectMethods

      static Hashtable objectMethods

    • emptyArray

      static Object[] emptyArray

    • dbg

      static final int dbg
      See Also:

  • Constructor Details

    • IntrospectionUtils

      public IntrospectionUtils()

  • Method Details

    • execute

      public static void execute(Object proxy, String method) throws Exception
      Execute a no-param method.
      Throws:
      Exception

    • setAttribute

      public static void setAttribute(Object proxy, String n, Object v) throws Exception
      Call void setAttribute( String ,Object )
      Throws:
      Exception

    • getAttribute

      public static Object getAttribute(Object proxy, String n) 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.

    • guessInstall

      public static String guessInstall(String installSysProp, String homeSysProp, String jarName)

    • guessInstall

      public static String guessInstall(String installSysProp, String homeSysProp, String jarName, String classFile)
      Guess a product install/home by analyzing the class path. It works for product using the pattern: lib/executable.jar or if executable.jar is included in classpath by a shell script. ( java -jar also works ) Insures both "install" and "home" System properties are set. If either or both System properties are unset, "install" and "home" will be set to the same value. This value will be the other System property that is set, or the guessed value if neither is set.

    • displayClassPath

      public static void displayClassPath(String msg, URL[] cp)
      Debug method, display the classpath

    • classPathAdd

      public static String classPathAdd(URL[] urls, String cp)
      Adds classpath entries from a vector of URL's to the "tc_path_add" System property. This System property lists the classpath entries common to web applications. This System property is currently used by Jasper when its JSP servlet compiles the Java file for a JSP.

    • setProperty

      public static void 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).

    • getProperty

      public static Object getProperty(Object o, String name)

    • setProperty

      public static void setProperty(Object o, String name)

    • replaceProperties

      public static String replaceProperties(String value, Object getter)
      Deprecated.
      Use the explicit method
      Replace ${NAME} with the property value

    • replaceProperties

      public static String replaceProperties(String value, Hashtable 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 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 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 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 - A vector of URLs
      cp - a String classpath of directory or jar file elements separated by path.separator delimiters.
      Throws:
      IOException
      MalformedURLException

    • getClassPath

      public static URL[] getClassPath(Vector 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 aliases) throws Exception
      Throws:
      Exception

    • findVoidSetters

      public static String[] findVoidSetters(Class c)

    • findBooleanSetters

      public static String[] findBooleanSetters(Class c)

    • clear

      public static void clear()

    • 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

    • d

      static void d(String s)