Package weka.core

Class ClassDiscovery

  • All Implemented Interfaces:
    RevisionHandler
    public class ClassDiscovery
extends java.lang.Object
implements RevisionHandler
    This class is used for discovering classes that implement a certain interface or a derived from a certain class.
    Version:
    $Revision: 5377 $
    Author:
    FracPete (fracpete at waikato dot ac dot nz)
    See Also:
    ClassDiscovery.StringCompare

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static boolean VERBOSE
      whether to output some debug information.

    • Constructor Summary

      Constructors 
      Constructor Description
      ClassDiscovery()  

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      static void clearCache()
      clears the cache for class/classnames relation.
      static java.util.Vector find​(java.lang.Class cls, java.lang.String pkgname)
      Checks the given package for classes that inherited from the given class, in case it's a class, or implement this class, in case it's an interface.
      static java.util.Vector find​(java.lang.Class cls, java.lang.String[] pkgnames)
      Checks the given packages for classes that inherited from the given class, in case it's a class, or implement this class, in case it's an interface.
      static java.util.Vector find​(java.lang.String classname, java.lang.String pkgname)
      Checks the given package for classes that inherited from the given class, in case it's a class, or implement this class, in case it's an interface.
      static java.util.Vector find​(java.lang.String classname, java.lang.String[] pkgnames)
      Checks the given packages for classes that inherited from the given class, in case it's a class, or implement this class, in case it's an interface.
      static java.util.Vector findPackages()
      Lists all packages it can find in the classpath.
      java.lang.String getRevision()
      Returns the revision string.
      static boolean hasInterface​(java.lang.Class intf, java.lang.Class cls)
      Checks whether the given class implements the given interface.
      static boolean hasInterface​(java.lang.String intf, java.lang.String cls)
      Checks whether the given class implements the given interface.
      static boolean isSubclass​(java.lang.Class superclass, java.lang.Class otherclass)
      Checks whether the "otherclass" is a subclass of the given "superclass".
      static boolean isSubclass​(java.lang.String superclass, java.lang.String otherclass)
      Checks whether the "otherclass" is a subclass of the given "superclass".
      static void main​(java.lang.String[] args)
      Possible calls: weka.core.ClassDiscovery <packages>
      Prints all the packages in the current classpath weka.core.ClassDiscovery <classname> <packagename(s)>
      Prints the classes it found.

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • VERBOSE

        public static final boolean VERBOSE
        whether to output some debug information.
        See Also:
        Constant Field Values

    • Constructor Detail

      • ClassDiscovery

        public ClassDiscovery()

    • Method Detail

      • isSubclass

        public static boolean isSubclass​(java.lang.String superclass,
                                 java.lang.String otherclass)
        Checks whether the "otherclass" is a subclass of the given "superclass".
        Parameters:
        superclass - the superclass to check against
        otherclass - this class is checked whether it is a subclass of the the superclass
        Returns:
        TRUE if "otherclass" is a true subclass

      • isSubclass

        public static boolean isSubclass​(java.lang.Class superclass,
                                 java.lang.Class otherclass)
        Checks whether the "otherclass" is a subclass of the given "superclass".
        Parameters:
        superclass - the superclass to check against
        otherclass - this class is checked whether it is a subclass of the the superclass
        Returns:
        TRUE if "otherclass" is a true subclass

      • hasInterface

        public static boolean hasInterface​(java.lang.String intf,
                                   java.lang.String cls)
        Checks whether the given class implements the given interface.
        Parameters:
        intf - the interface to look for in the given class
        cls - the class to check for the interface
        Returns:
        TRUE if the class contains the interface

      • hasInterface

        public static boolean hasInterface​(java.lang.Class intf,
                                   java.lang.Class cls)
        Checks whether the given class implements the given interface.
        Parameters:
        intf - the interface to look for in the given class
        cls - the class to check for the interface
        Returns:
        TRUE if the class contains the interface

      • find

        public static java.util.Vector find​(java.lang.String classname,
                                    java.lang.String[] pkgnames)
        Checks the given packages for classes that inherited from the given class, in case it's a class, or implement this class, in case it's an interface.
        Parameters:
        classname - the class/interface to look for
        pkgnames - the packages to search in
        Returns:
        a list with all the found classnames

      • find

        public static java.util.Vector find​(java.lang.String classname,
                                    java.lang.String pkgname)
        Checks the given package for classes that inherited from the given class, in case it's a class, or implement this class, in case it's an interface.
        Parameters:
        classname - the class/interface to look for
        pkgname - the package to search in
        Returns:
        a list with all the found classnames

      • find

        public static java.util.Vector find​(java.lang.Class cls,
                                    java.lang.String[] pkgnames)
        Checks the given packages for classes that inherited from the given class, in case it's a class, or implement this class, in case it's an interface.
        Parameters:
        cls - the class/interface to look for
        pkgnames - the packages to search in
        Returns:
        a list with all the found classnames

      • find

        public static java.util.Vector find​(java.lang.Class cls,
                                    java.lang.String pkgname)
        Checks the given package for classes that inherited from the given class, in case it's a class, or implement this class, in case it's an interface.
        Parameters:
        cls - the class/interface to look for
        pkgname - the package to search in
        Returns:
        a list with all the found classnames

      • findPackages

        public static java.util.Vector findPackages()
        Lists all packages it can find in the classpath.
        Returns:
        a list with all the found packages

      • clearCache

        public static void clearCache()
        clears the cache for class/classnames relation.

      • getRevision

        public java.lang.String getRevision()
        Returns the revision string.
        Specified by:
        getRevision in interface RevisionHandler
        Returns:
        the revision

      • main

        public static void main​(java.lang.String[] args)
        Possible calls:
        • weka.core.ClassDiscovery <packages>
          Prints all the packages in the current classpath
        • weka.core.ClassDiscovery <classname> <packagename(s)>
          Prints the classes it found.
        Parameters:
        args - the commandline arguments