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    1   /**
    2    * Copyright (c) 2002-2011 "Neo Technology,"
    3    * Network Engine for Objects in Lund AB [http://neotechnology.com]
    4    *
    5    * This file is part of Neo4j.
    6    *
    7    * Neo4j is free software: you can redistribute it and/or modify
    8    * it under the terms of the GNU General Public License as published by
    9    * the Free Software Foundation, either version 3 of the License, or
    10   * (at your option) any later version.
    11   *
    12   * This program is distributed in the hope that it will be useful,
    13   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    15   * GNU General Public License for more details.
    16   *
    17   * You should have received a copy of the GNU General Public License
    18   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    19   */
    20  package org.neo4j.server.rest.repr;
    21
    22  import javax.ws.rs.WebApplicationException;
    23  import javax.ws.rs.core.MediaType;
    24  import javax.ws.rs.core.Response;
    25  import java.util.Collection;
    26
    27  public class MediaTypeNotSupportedException extends WebApplicationException
    28  {
    29      private static final long serialVersionUID = 5159216782240337940L;
    30
    31      public MediaTypeNotSupportedException( Response.Status status, Collection<MediaType> supported,
    32                                             MediaType... requested )
    33      {
    34          super( createResponse( status, message( supported, requested ) ) );
    35      }
    36
    37      private static Response createResponse( Response.Status status, String message )
    38      {
    39          return Response.status( status ).entity( message ).build();
    40      }
    41
    42      private static String message( Collection<MediaType> supported, MediaType[] requested )
    43      {
    44          StringBuilder message = new StringBuilder( "No matching representation format found.\n" );
    45          if ( requested.length == 0 )
    46          {
    47              message.append( "No requested representation format supplied." );
    48          }
    49          else if ( requested.length == 1 )
    50          {
    51              message.append( "Request format: " ).append( requested[0] ).append( "\n" );
    52          }
    53          else
    54          {
    55              message.append( "Requested formats:\n" );
    56              for ( int i = 0; i < requested.length; i++ )
    57              {
    58                  message.append( " " ).append( i ).append( ". " );
    59                  message.append( requested[i] ).append( "\n" );
    60              }
    61          }
    62          message.append( "Supported representation formats:" );
    63          if ( supported.isEmpty() )
    64          {
    65              message.append( " none" );
    66          }
    67          else
    68          {
    69              for ( MediaType type : supported )
    70              {
    71                  message.append( "\n * " ).append( type );
    72              }
    73          }
    74          return message.toString();
    75      }
    76  }