Package com.fasterxml.aalto.util

Class URLUtil

  • public final class URLUtil
extends java.lang.Object

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private URLUtil()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static java.lang.String fileToSystemId​(java.io.File f)  
      static java.net.URL fileToURL​(java.io.File f)
      This method is added because the default conversion using file.toURL() turns out to be rather slow, as it tries to figure out if the file is actually a directory.
      static java.io.InputStream inputStreamFromURL​(java.net.URL url)
      Method that tries to get a stream (ideally, optimal one) to read from the specified URL.
      static java.io.OutputStream outputStreamFromURL​(java.net.URL url)
      Method that tries to get a stream (ideally, optimal one) to write to the resource specified by given URL.
      private static void throwIoException​(java.net.MalformedURLException mex, java.lang.String sysId)
      Helper method that tries to fully convert strange URL-specific exception to more general IO exception.
      static java.net.URL urlFromCurrentDir()
      Method that tries to create and return URL that denotes current working directory.
      static java.net.URL urlFromSystemId​(java.lang.String sysId)
      Method that tries to figure out how to create valid URL from a system id, without additional contextual information.
      static java.net.URL urlFromSystemId​(java.lang.String sysId, java.net.URL ctxt)  
      static java.lang.String urlToSystemId​(java.net.URL u)  

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • URLUtil

        private URLUtil()

    • Method Detail

      • urlFromSystemId

        public static java.net.URL urlFromSystemId​(java.lang.String sysId)
                                    throws java.io.IOException
        Method that tries to figure out how to create valid URL from a system id, without additional contextual information. We could perhaps use java.net.URI class in future?
        Throws:
        java.io.IOException

      • urlFromSystemId

        public static java.net.URL urlFromSystemId​(java.lang.String sysId,
                                           java.net.URL ctxt)
                                    throws java.io.IOException
        Throws:
        java.io.IOException

      • urlFromCurrentDir

        public static java.net.URL urlFromCurrentDir()
                                      throws java.io.IOException
        Method that tries to create and return URL that denotes current working directory. Usually used to create a context, when one is not explicitly passed.
        Throws:
        java.io.IOException

      • inputStreamFromURL

        public static java.io.InputStream inputStreamFromURL​(java.net.URL url)
                                              throws java.io.IOException
        Method that tries to get a stream (ideally, optimal one) to read from the specified URL. Currently it just means creating a simple file input stream if the URL points to a (local) file, and otherwise relying on URL classes input stream creation method.
        Throws:
        java.io.IOException

      • outputStreamFromURL

        public static java.io.OutputStream outputStreamFromURL​(java.net.URL url)
                                                throws java.io.IOException
        Method that tries to get a stream (ideally, optimal one) to write to the resource specified by given URL. Currently it just means creating a simple file output stream if the URL points to a (local) file, and otherwise relying on URL classes input stream creation method.
        Throws:
        java.io.IOException

      • fileToURL

        public static java.net.URL fileToURL​(java.io.File f)
                              throws java.io.IOException
        This method is added because the default conversion using file.toURL() turns out to be rather slow, as it tries to figure out if the file is actually a directory. Now, for our use cases this is irrelevant, so we can optimize out that expensive part.
        Throws:
        java.io.IOException

      • fileToSystemId

        public static java.lang.String fileToSystemId​(java.io.File f)
                                       throws java.io.IOException
        Throws:
        java.io.IOException

      • urlToSystemId

        public static java.lang.String urlToSystemId​(java.net.URL u)

      • throwIoException

        private static void throwIoException​(java.net.MalformedURLException mex,
                                     java.lang.String sysId)
                              throws java.io.IOException
        Helper method that tries to fully convert strange URL-specific exception to more general IO exception. Also, to try to use JDK 1.4 feature without creating requirement, uses reflection to try to set the root cause, if we are running on JDK1.4
        Throws:
        java.io.IOException