renderers/ofoverlay/src/main/java/org/opendaylight/groupbasedpolicy/renderer/ofoverlay/equivalence/EquivalenceFabric.java

   1 /*
   2  * Copyright (c) 2015 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.ofoverlay.equivalence;
  10
  11 import javax.annotation.Nullable;
  12
  13 import com.google.common.base.Equivalence;
  14 import com.google.common.base.Function;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.Flow;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.groups.Group;
  17
  18 /**
  19  * A simple fabric for equivalence rules and for functions used<br>
  20  *     in converting Lists to Sets with our own equivalence rules
  21  */
  22 public class EquivalenceFabric {
  23
  24     private EquivalenceFabric() {
  25         throw new UnsupportedOperationException("Can not create an instance");
  26     }
  27
  28     // Flow
  29     public static final FlowEquivalence FLOW_EQUIVALENCE = new FlowEquivalence();
  30     public static final MatchEquivalence MATCH_EQUIVALENCE = new MatchEquivalence();
  31
  32     public static final Function<Flow, Equivalence.Wrapper<Flow>> FLOW_WRAPPER_FUNCTION =
  33             new Function<Flow, Equivalence.Wrapper<Flow>>() {
  34
  35                 @Nullable
  36                 @Override
  37                 public Equivalence.Wrapper<Flow> apply(@Nullable Flow input) {
  38                     return FLOW_EQUIVALENCE.wrap(input);
  39                 }
  40             };
  41
  42     // Group
  43     public static final BucketsEquivalence BUCKETS_EQUIVALENCE = new BucketsEquivalence();
  44     public static final GroupEquivalence GROUP_EQUIVALENCE = new GroupEquivalence();
  45
  46     public static final Function<Group, Equivalence.Wrapper<Group>> GROUP_WRAPPER_FUNCTION =
  47             new Function<Group, Equivalence.Wrapper<Group>>() {
  48
  49                 @Nullable
  50                 @Override
  51                 public Equivalence.Wrapper<Group> apply(@Nullable Group input) {
  52                     return GROUP_EQUIVALENCE.wrap(input);
  53                 }
  54             };
  55
  56 }