Package org.apache.commons.modeler.util

Class IntrospectionUtils

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

    • Field Summary

      Fields 
      Modifier and Type Field Description
      (package private) static int dbg  
      (package private) static java.lang.Object[] emptyArray  
      (package private) static java.lang.Class[] NO_PARAMS  
      (package private) static java.util.Hashtable objectMethods  
      static java.lang.String PATH_SEPARATOR  
      (package private) static java.lang.Class[] STRING_OBJ_PARAM  
      (package private) static java.lang.Class[] STRING_PARAM  

    • Method Summary

      All Methods Static Methods Concrete Methods Deprecated Methods 
      Modifier and Type Method Description
      static void addJarsFromClassPath​(java.util.Vector jars, java.lang.String cp)
      add elements from the classpath cp to a Vector jars as file URLs (We use Vector for JDK 1.1 compat).
      static void addToClassPath​(java.util.Vector cpV, java.lang.String dir)
      Add all the jar files in a dir to the classpath, represented as a Vector of URLs.
      static void addToolsJar​(java.util.Vector v)  
      static void callMain​(java.lang.Class c, java.lang.String[] args)  
      static java.lang.Object callMethod0​(java.lang.Object target, java.lang.String methodN)  
      static java.lang.Object callMethod1​(java.lang.Object target, java.lang.String methodN, java.lang.Object param1, java.lang.String typeParam1, java.lang.ClassLoader cl)  
      static java.lang.Object callMethodN​(java.lang.Object target, java.lang.String methodN, java.lang.Object[] params, java.lang.Class[] typeParams)  
      static java.lang.String capitalize​(java.lang.String name)
      Reverse of Introspector.decapitalize
      static java.lang.String classPathAdd​(java.net.URL[] urls, java.lang.String cp)
      Adds classpath entries from a vector of URL's to the "tc_path_add" System property.
      static void clear()  
      (package private) static void d​(java.lang.String s)  
      static void displayClassPath​(java.lang.String msg, java.net.URL[] cp)
      Debug method, display the classpath
      static void execute​(java.lang.Object proxy, java.lang.String method)
      Execute a no-param method.
      static java.lang.String[] findBooleanSetters​(java.lang.Class c)  
      static java.lang.reflect.Method findMethod​(java.lang.Class c, java.lang.String name, java.lang.Class[] params)  
      static java.lang.reflect.Method[] findMethods​(java.lang.Class c)  
      static java.lang.String[] findVoidSetters​(java.lang.Class c)  
      static java.lang.Object getAttribute​(java.lang.Object proxy, java.lang.String n)
      Call void getAttribute( String )
      static java.net.URL[] getClassPath​(java.lang.String dir, java.lang.String cpath, java.lang.String cpathProp, boolean addTools)
      Construct a URL classpath from files in a directory, a cpath property, and tools.jar.
      static java.net.URL[] getClassPath​(java.util.Vector v)
      Return a URL[] that can be used to construct a class loader
      static java.lang.String[] getFilesByExt​(java.lang.String ld, java.lang.String ext)
      Return all files with a given extension in a dir
      static java.lang.Object getProperty​(java.lang.Object o, java.lang.String name)  
      static java.net.URL getURL​(java.lang.String base, java.lang.String file)
      Construct a file url from a file, using a base dir
      static java.lang.ClassLoader getURLClassLoader​(java.net.URL[] urls, java.lang.ClassLoader parent)
      Construct a URLClassLoader.
      static java.lang.String guessInstall​(java.lang.String installSysProp, java.lang.String homeSysProp, java.lang.String jarName)  
      static java.lang.String guessInstall​(java.lang.String installSysProp, java.lang.String homeSysProp, java.lang.String jarName, java.lang.String classFile)
      Guess a product install/home by analyzing the class path.
      static boolean hasHook​(java.lang.Object obj, java.lang.String methodN)
      Test if the object implements a particular method
      static boolean processArgs​(java.lang.Object proxy, java.lang.String[] args)  
      static boolean processArgs​(java.lang.Object proxy, java.lang.String[] args, java.lang.String[] args0, java.lang.String[] args1, java.util.Hashtable aliases)  
      static java.lang.String replaceProperties​(java.lang.String value, java.lang.Object getter)
      Deprecated.
      Use the explicit method
      static java.lang.String replaceProperties​(java.lang.String value, java.util.Hashtable staticProp, IntrospectionUtils.PropertySource[] dynamicProp)
      Replace ${NAME} with the property value
      static void setAttribute​(java.lang.Object proxy, java.lang.String n, java.lang.Object v)
      Call void setAttribute( String ,Object )
      static void setProperty​(java.lang.Object o, java.lang.String name)  
      static void setProperty​(java.lang.Object o, java.lang.String name, java.lang.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 java.lang.String unCapitalize​(java.lang.String name)  

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • NO_PARAMS

        static final java.lang.Class[] NO_PARAMS

      • STRING_OBJ_PARAM

        static final java.lang.Class[] STRING_OBJ_PARAM

      • STRING_PARAM

        static final java.lang.Class[] STRING_PARAM

      • PATH_SEPARATOR

        public static java.lang.String PATH_SEPARATOR

      • objectMethods

        static java.util.Hashtable objectMethods

      • emptyArray

        static java.lang.Object[] emptyArray

    • Constructor Detail

      • IntrospectionUtils

        public IntrospectionUtils()

    • Method Detail

      • execute

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

      • setAttribute

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

      • getAttribute

        public static java.lang.Object getAttribute​(java.lang.Object proxy,
                                            java.lang.String n)
                                     throws java.lang.Exception
        Call void getAttribute( String )
        Throws:
        java.lang.Exception

      • getURLClassLoader

        public static java.lang.ClassLoader getURLClassLoader​(java.net.URL[] urls,
                                                      java.lang.ClassLoader parent)
        Construct a URLClassLoader. Will compile and work in JDK1.1 too.

      • guessInstall

        public static java.lang.String guessInstall​(java.lang.String installSysProp,
                                            java.lang.String homeSysProp,
                                            java.lang.String jarName)

      • guessInstall

        public static java.lang.String guessInstall​(java.lang.String installSysProp,
                                            java.lang.String homeSysProp,
                                            java.lang.String jarName,
                                            java.lang.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​(java.lang.String msg,
                                    java.net.URL[] cp)
        Debug method, display the classpath

      • classPathAdd

        public static java.lang.String classPathAdd​(java.net.URL[] urls,
                                            java.lang.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​(java.lang.Object o,
                               java.lang.String name,
                               java.lang.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 java.lang.Object getProperty​(java.lang.Object o,
                                           java.lang.String name)

      • setProperty

        public static void setProperty​(java.lang.Object o,
                               java.lang.String name)

      • replaceProperties

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

      • replaceProperties

        public static java.lang.String replaceProperties​(java.lang.String value,
                                                 java.util.Hashtable staticProp,
                                                 IntrospectionUtils.PropertySource[] dynamicProp)
        Replace ${NAME} with the property value

      • capitalize

        public static java.lang.String capitalize​(java.lang.String name)
        Reverse of Introspector.decapitalize

      • unCapitalize

        public static java.lang.String unCapitalize​(java.lang.String name)

      • addToClassPath

        public static void addToClassPath​(java.util.Vector cpV,
                                  java.lang.String dir)
        Add all the jar files in a dir to the classpath, represented as a Vector of URLs.

      • addToolsJar

        public static void addToolsJar​(java.util.Vector v)

      • getFilesByExt

        public static java.lang.String[] getFilesByExt​(java.lang.String ld,
                                               java.lang.String ext)
        Return all files with a given extension in a dir

      • getURL

        public static java.net.URL getURL​(java.lang.String base,
                                  java.lang.String file)
        Construct a file url from a file, using a base dir

      • addJarsFromClassPath

        public static void addJarsFromClassPath​(java.util.Vector jars,
                                        java.lang.String cp)
                                 throws java.io.IOException,
                                        java.net.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:
        java.io.IOException
        java.net.MalformedURLException

      • getClassPath

        public static java.net.URL[] getClassPath​(java.util.Vector v)
        Return a URL[] that can be used to construct a class loader

      • getClassPath

        public static java.net.URL[] getClassPath​(java.lang.String dir,
                                          java.lang.String cpath,
                                          java.lang.String cpathProp,
                                          boolean addTools)
                                   throws java.io.IOException,
                                          java.net.MalformedURLException
        Construct a URL classpath from files in a directory, a cpath property, and tools.jar.
        Throws:
        java.io.IOException
        java.net.MalformedURLException

      • processArgs

        public static boolean processArgs​(java.lang.Object proxy,
                                  java.lang.String[] args)
                           throws java.lang.Exception
        Throws:
        java.lang.Exception

      • processArgs

        public static boolean processArgs​(java.lang.Object proxy,
                                  java.lang.String[] args,
                                  java.lang.String[] args0,
                                  java.lang.String[] args1,
                                  java.util.Hashtable aliases)
                           throws java.lang.Exception
        Throws:
        java.lang.Exception

      • findVoidSetters

        public static java.lang.String[] findVoidSetters​(java.lang.Class c)

      • findBooleanSetters

        public static java.lang.String[] findBooleanSetters​(java.lang.Class c)

      • clear

        public static void clear()

      • findMethods

        public static java.lang.reflect.Method[] findMethods​(java.lang.Class c)

      • findMethod

        public static java.lang.reflect.Method findMethod​(java.lang.Class c,
                                                  java.lang.String name,
                                                  java.lang.Class[] params)

      • hasHook

        public static boolean hasHook​(java.lang.Object obj,
                              java.lang.String methodN)
        Test if the object implements a particular method

      • callMain

        public static void callMain​(java.lang.Class c,
                            java.lang.String[] args)
                     throws java.lang.Exception
        Throws:
        java.lang.Exception

      • callMethod1

        public static java.lang.Object callMethod1​(java.lang.Object target,
                                           java.lang.String methodN,
                                           java.lang.Object param1,
                                           java.lang.String typeParam1,
                                           java.lang.ClassLoader cl)
                                    throws java.lang.Exception
        Throws:
        java.lang.Exception

      • callMethod0

        public static java.lang.Object callMethod0​(java.lang.Object target,
                                           java.lang.String methodN)
                                    throws java.lang.Exception
        Throws:
        java.lang.Exception

      • callMethodN

        public static java.lang.Object callMethodN​(java.lang.Object target,
                                           java.lang.String methodN,
                                           java.lang.Object[] params,
                                           java.lang.Class[] typeParams)
                                    throws java.lang.Exception
        Throws:
        java.lang.Exception

      • d

        static void d​(java.lang.String s)