pcep/impl/src/main/java/org/opendaylight/protocol/pcep/impl/subobject/XROSubobjectAttributeMapping.java

   1 /*
   2  * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.protocol.pcep.impl.subobject;
   9
  10 import java.util.EnumMap;
  11 import java.util.HashMap;
  12 import java.util.Map;
  13 import java.util.NoSuchElementException;
  14
  15 import org.opendaylight.protocol.pcep.subobject.XROSubobjectAttribute;
  16
  17 /**
  18  * Bidirectional mapping for XROSubobjectAttribute and appropriate identifier.
  19  */
  20 public class XROSubobjectAttributeMapping {
  21         private static final XROSubobjectAttributeMapping instance = new XROSubobjectAttributeMapping();
  22
  23         private final Map<XROSubobjectAttribute, Integer> ofCodesMap = new EnumMap<XROSubobjectAttribute, Integer>(XROSubobjectAttribute.class);
  24         private final Map<Integer, XROSubobjectAttribute> ofCodeIdsMap = new HashMap<Integer, XROSubobjectAttribute>();
  25
  26         private XROSubobjectAttributeMapping() {
  27                 this.fillIn();
  28         }
  29
  30         private void fillIn() {
  31                 this.fillIn(0, XROSubobjectAttribute.INTERFACE);
  32                 this.fillIn(1, XROSubobjectAttribute.NODE);
  33                 this.fillIn(2, XROSubobjectAttribute.SRLG);
  34         }
  35
  36         private void fillIn(int identifier, XROSubobjectAttribute ofCode) {
  37                 this.ofCodesMap.put(ofCode, identifier);
  38                 this.ofCodeIdsMap.put(identifier, ofCode);
  39         }
  40
  41         public int getFromAttributeEnum(XROSubobjectAttribute ofCode) {
  42                 final Integer ofci = this.ofCodesMap.get(ofCode);
  43                 if (ofci == null)
  44                         throw new NoSuchElementException("Unknown XROSubobjectAttribute type: " + ofCode);
  45                 return ofci;
  46         }
  47
  48         public XROSubobjectAttribute getFromAttributeIdentifier(int identifier) {
  49                 final XROSubobjectAttribute ofc = this.ofCodeIdsMap.get(identifier);
  50                 if (ofc == null)
  51                         throw new NoSuchElementException("Unknown XROSubobjectAttribute identifier.");
  52                 return ofc;
  53         }
  54
  55         public static XROSubobjectAttributeMapping getInstance() {
  56                 return instance;
  57         }
  58 }