PathResolver.java

/*
** Module   : PathResolver.java
** Abstract : Defines methods and their thrown exceptions to resolve a native system file path
**            into its host system file path.
**
** Copyright (c) 2018, Golden Code Development Corporation.
**
** -#- -I- --Date-- ---------------------------------Description----------------------------------
** 001 SBI 20180521 Initial version.
** 002 ECF 20180613 Define singleton instance of unresolved path exception. This exception is
**                  thrown very often and the stack trace is not important, so using a singleton
**                  avoids the significant overhead of capturing the stack.
*/
/*
** This program is free software: you can redistribute it and/or modify
** it under the terms of the GNU Affero General Public License as
** published by the Free Software Foundation, either version 3 of the
** License, or (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
** GNU Affero General Public License for more details.
**
** You may find a copy of the GNU Affero GPL version 3 at the following
** location: https://www.gnu.org/licenses/agpl-3.0.en.html
**
** Additional terms under GNU Affero GPL version 3 section 7:
**
**   Under Section 7 of the GNU Affero GPL version 3, the following additional
**   terms apply to the works covered under the License.  These additional terms
**   are non-permissive additional terms allowed under Section 7 of the GNU
**   Affero GPL version 3 and may not be removed by you.
**
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**
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*/
package com.goldencode.p2j.util;


/**
 * Defines methods to resolve the legacy system file path to the path on the host system.
 */
public interface PathResolver
{
   /** Singleton unresolved path exception to avoid construction overhead */
   public static final UnresolvedPathException UNRESOLVED_ERROR = new UnresolvedPathException();
   
   /**
    * Resolve the given legacy path to the path on the host sytem.
    * 
    * @param    path
    *           The given legacy path to be resolved on the host system
    * 
    * @return   The resolved path on the host system
    * 
    * @throws   UnresolvedPathException
    *           If the given path can't be resolved
    */
   public String resolvePath(String path) throws UnresolvedPathException;
   
   /**
    * Defines the unresolved path exception.
    */
   @SuppressWarnings("serial")
   public static class UnresolvedPathException
   extends Exception
   {
      /**
       * Creates this instance for the given unresolved legacy system path
       */
      private UnresolvedPathException()
      {
         super();
      }
   }
}