jspi/src/main/java/de/lohndirekt/print/IppRequestFactory.java

   1 /**
   2  * Copyright (C) 2003 <a href="http://www.lohndirekt.de/">lohndirekt.de</a>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  *
  18  */
  19 package de.lohndirekt.print;
  20
  21 import java.lang.reflect.Constructor;
  22 import java.net.URI;
  23
  24 import javax.print.attribute.AttributeSet;
  25 import javax.print.attribute.HashAttributeSet;
  26 import javax.print.attribute.standard.RequestingUserName;
  27
  28 import de.lohndirekt.print.attribute.auth.RequestingUserPassword;
  29 import de.lohndirekt.print.attribute.ipp.printerdesc.supported.OperationsSupported;
  30
  31 /**
  32  * @author bpusch
  33  *
  34  */
  35 public final class IppRequestFactory {
  36
  37     final static String IPP_REQUEST_IMPL_KEY = "de.lohndirekt.print.IppRequest.Impl";
  38
  39     final static IppRequest createIppRequest(URI uri,
  40             OperationsSupported operation, RequestingUserName user,
  41             RequestingUserPassword passwd) {
  42         String requestClassName = System.getProperty(IPP_REQUEST_IMPL_KEY);
  43         IppRequest request = null;
  44         if (requestClassName == null) {
  45             request = new IppRequestCupsImpl(uri, operation);
  46         } else {
  47             Class clazz = null;
  48             try {
  49                 clazz = Class.forName(requestClassName);
  50             } catch (ClassNotFoundException e) {
  51                 throw new IllegalArgumentException("Class " + requestClassName
  52                         + " does not exist.");
  53             }
  54
  55             try {
  56                 Constructor constructor = clazz
  57                         .getDeclaredConstructor(new Class[] { URI.class,
  58                                 OperationsSupported.class });
  59                 request = (IppRequest) constructor.newInstance(new Object[] {
  60                         uri, operation });
  61             } catch (Exception e) {
  62                 throw new RuntimeException(e);
  63             }
  64         }
  65         if (user != null && passwd != null) {
  66             AttributeSet set = new HashAttributeSet();
  67             set.add(user);
  68             set.add(passwd);
  69             request.addOperationAttributes(set);
  70         }
  71         return request;
  72     }
  73 }