Interface URLHelper

All Known Implementing Classes:
FTPHelper, HTTPHelper, RemoteURLHelper

public interface URLHelper
Interface defining a helper class for dealing with URL resources. The purpose of this class is to provide the flexibility to use alternative http implementations, for example Apache HTTPClient, and secondly to provide a hook for clients to inject custom headers, for example oAuth tokens, into the requests. An instance of URLHelper is created for a URL (there is a 1-1 relation between a URL and HRLHelper).
See Also:
  • Method Details

    • getUrl

      URL getUrl()
      Returns:
      URL of the associated resource
    • getContentLength

      long getContentLength() throws IOException
      Returns:
      content length of the resource, or -1 if not available
      Throws:
      IOException
    • openInputStream

      InputStream openInputStream() throws IOException
      Open an InputStream to stream the contents of the resource
      Returns:
      Throws:
      IOException
    • openInputStreamForRange

      InputStream openInputStreamForRange(long start, long end) throws IOException
      Open an InputStream to stream a slice (range) of the resource. May throw an OperationUnsupportedException
      Parameters:
      start -
      end -
      Returns:
      Throws:
      IOException
    • exists

      boolean exists() throws IOException
      Throws:
      IOException