groupbasedpolicy/src/main/java/org/opendaylight/groupbasedpolicy/renderer/opflex/mit/EnumInfo.java

   1 /*
   2  * Copyright (c) 2014 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
   9 package org.opendaylight.groupbasedpolicy.renderer.opflex.mit;
  10
  11 import java.math.BigInteger;
  12 import java.util.HashMap;
  13 import java.util.Map;
  14
  15 /**
  16  * An object that represents an enum in the MIT's
  17  * PropertyInfo object map
  18  *
  19  * @author tbachman
  20  *
  21  */
  22 public interface EnumInfo {
  23
  24         /**
  25          * Get the name of the enum as it appears in the MIT's
  26          * PropertyInfo map.
  27          *
  28          * @return
  29          */
  30         public String getName();
  31
  32         /**
  33          * Get the Integer representation of the value by name
  34          * for the enum
  35          *
  36          * @param name
  37          * @return
  38          */
  39         public BigInteger getEnumValue(String name);
  40
  41         public String getEnumValue(BigInteger value);
  42
  43         /**
  44          * Class for building immutable EnumInfo objects
  45          *
  46          * @author tbachman
  47          *
  48          */
  49         public static class EnumInfoBuilder {
  50                 private String name;
  51                 private Map<String, BigInteger> enumValuesByString;
  52                 private Map<BigInteger, String> enumValuesByInt;
  53
  54                 public EnumInfoBuilder() {
  55                         this.enumValuesByString = new HashMap<String, BigInteger>();
  56                         this.enumValuesByInt = new HashMap<BigInteger, String>();
  57                 }
  58
  59                 /**
  60                  * Set the name of the EnumInfo object
  61                  *
  62                  * @param name
  63                  * @return
  64                  */
  65                 public EnumInfoBuilder setName(String name) {
  66                         this.name = name;
  67                         return this;
  68                 }
  69
  70                 /**
  71                  * Add a name/value pair to the enum, where
  72                  * value is an Integer object
  73                  *
  74                  * @param name
  75                  * @param value
  76                  * @return
  77                  */
  78                 public EnumInfoBuilder setEnumValue(String name, BigInteger value) {
  79                         this.enumValuesByString.put(name, value);
  80                         this.enumValuesByInt.put(value, name);
  81                         return this;
  82                 }
  83
  84                 public EnumInfo build() {
  85                         return new EnumInfoImpl(this);
  86                 }
  87
  88                 public static class EnumInfoImpl implements EnumInfo {
  89                         private final String name;
  90                         private final Map<String, BigInteger> enumValuesByString;
  91                         private final Map<BigInteger, String> enumValuesByInt;
  92
  93                         public EnumInfoImpl(EnumInfoBuilder builder) {
  94                                 this.name = builder.name;
  95                                 this.enumValuesByString = builder.enumValuesByString;
  96                                 this.enumValuesByInt = builder.enumValuesByInt;
  97                         }
  98
  99                         @Override
 100                         public String getName() {
 101                                 return this.name;
 102                         }
 103
 104                         @Override
 105                         public BigInteger getEnumValue(String name) {
 106                                 return this.enumValuesByString.get(name);
 107                         }
 108
 109                         @Override
 110                         public String getEnumValue(BigInteger value) {
 111                                 return this.enumValuesByInt.get(value);
 112                         }
 113                 }
 114         }
 115 }