Package kieker.tools.common

Class ParameterEvaluationUtils

java.lang.Object
kieker.tools.common.ParameterEvaluationUtils
public final class ParameterEvaluationUtils
extends java.lang.Object
Collection of command line parameter evaluation functions.
Since:
1.15
Author:
Reiner Jung

  • Method Summary

    Modifier and Type Method Description
    static boolean checkDirectory​(java.io.File location, java.lang.String label, com.beust.jcommander.JCommander commander)
    Check whether the given handle refers to an existing directory.
    static <T> T createFromConfiguration​(java.lang.Class<T> clazz, Configuration configuration, java.lang.String key, java.lang.String errorMessage)
    Instantiate on object from a property.
    static java.net.URL createURL​(java.lang.String urlString, java.lang.String label)
    Create an URL from a given string.
    static boolean isFileReadable​(java.io.File file, java.lang.String label, com.beust.jcommander.JCommander commander)
    Check whether a specified file is readable.

    Methods inherited from class java.lang.Object

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

  • Method Details

    • checkDirectory

      public static boolean checkDirectory​(java.io.File location, java.lang.String label, com.beust.jcommander.JCommander commander)
      Check whether the given handle refers to an existing directory.
      Parameters:
      location - path to the directory
      label - noun or phrase indicating the parameter of the given location, e.g., "input directory"
      commander - command line handler used to plot the usage message
      Returns:
      returns true if the directory exists, else false

    • isFileReadable

      public static boolean isFileReadable​(java.io.File file, java.lang.String label, com.beust.jcommander.JCommander commander)
      Check whether a specified file is readable.
      Parameters:
      file - the file handle
      label - noun or phrase indicating the parameter of the given location, e.g., "configuration file"
      commander - command line handler used to plot the usage message
      Returns:
      true when the file is readable

    • createURL

      public static java.net.URL createURL​(java.lang.String urlString, java.lang.String label)
      Create an URL from a given string.
      Parameters:
      urlString - the url string
      label - label used to indicate which string
      Returns:
      returns an URL or null on error

    • createFromConfiguration

      public static <T> T createFromConfiguration​(java.lang.Class<T> clazz, Configuration configuration, java.lang.String key, java.lang.String errorMessage)
      Instantiate on object from a property.
      Type Parameters:
      T - class type of the object to be instantiated
      Parameters:
      clazz - class object for the object to be instantiated
      configuration - configuration object containing the class name
      key - key of the entry that should contain the a class name
      errorMessage - error message in case the object cannot be instantiated
      Returns:
      returns either an object conforming to the object class or null if the initialization in incomplete