Package org.apache.lucene.util

Class CommandLineUtil

  • public final class CommandLineUtil
extends java.lang.Object
    Class containing some useful methods used by command line tools

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static java.lang.Class<? extends Directory> loadDirectoryClass​(java.lang.String clazzName)
      Loads a specific Directory implementation
      static java.lang.Class<? extends FSDirectory> loadFSDirectoryClass​(java.lang.String clazzName)
      Loads a specific FSDirectory implementation
      static FSDirectory newFSDirectory​(java.lang.Class<? extends FSDirectory> clazz, java.io.File file)
      Creates a new specific FSDirectory instance
      static FSDirectory newFSDirectory​(java.lang.String clazzName, java.io.File file)
      Creates a specific FSDirectory instance starting from its class name

      • Methods inherited from class java.lang.Object

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

    • Method Detail

      • newFSDirectory

        public static FSDirectory newFSDirectory​(java.lang.String clazzName,
                                         java.io.File file)
        Creates a specific FSDirectory instance starting from its class name
        Parameters:
        clazzName - The name of the FSDirectory class to load
        file - The file to be used as parameter constructor
        Returns:
        the new FSDirectory instance

      • loadDirectoryClass

        public static java.lang.Class<? extends Directory> loadDirectoryClass​(java.lang.String clazzName)
                                                               throws java.lang.ClassNotFoundException
        Loads a specific Directory implementation
        Parameters:
        clazzName - The name of the Directory class to load
        Returns:
        The Directory class loaded
        Throws:
        java.lang.ClassNotFoundException - If the specified class cannot be found.

      • loadFSDirectoryClass

        public static java.lang.Class<? extends FSDirectory> loadFSDirectoryClass​(java.lang.String clazzName)
                                                                   throws java.lang.ClassNotFoundException
        Loads a specific FSDirectory implementation
        Parameters:
        clazzName - The name of the FSDirectory class to load
        Returns:
        The FSDirectory class loaded
        Throws:
        java.lang.ClassNotFoundException - If the specified class cannot be found.

      • newFSDirectory

        public static FSDirectory newFSDirectory​(java.lang.Class<? extends FSDirectory> clazz,
                                         java.io.File file)
                                  throws java.lang.NoSuchMethodException,
                                         java.lang.InstantiationException,
                                         java.lang.IllegalAccessException,
                                         java.lang.reflect.InvocationTargetException
        Creates a new specific FSDirectory instance
        Parameters:
        clazz - The class of the object to be created
        file - The file to be used as parameter constructor
        Returns:
        The new FSDirectory instance
        Throws:
        java.lang.NoSuchMethodException - If the Directory does not have a constructor that takes File.
        java.lang.InstantiationException - If the class is abstract or an interface.
        java.lang.IllegalAccessException - If the constructor does not have public visibility.
        java.lang.reflect.InvocationTargetException - If the constructor throws an exception