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 com.google.common.base.Equivalence;
  12 import com.google.common.base.Function;
  13 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.inventory.rev130819.tables.table.Flow;
  14
  15 import javax.annotation.Nullable;
  16
  17 /**
  18  * A simple fabric for equivalence rules
  19  * and for functions used in converting Lists to Sets with our own equivalence rules
  20  *
  21  */
  22 public class EquivalenceFabric {
  23
  24     private EquivalenceFabric(){
  25         throw new UnsupportedOperationException("Can not create an instance");
  26     }
  27
  28     public static final FlowEquivalence FLOW_EQUIVALENCE = new FlowEquivalence();
  29     public static final Function<Flow, Equivalence.Wrapper<Flow>> FLOW_WRAPPER_FUNCTION =
  30             new Function<Flow, Equivalence.Wrapper<Flow>>() {
  31                 @Nullable
  32                 @Override
  33                 public Equivalence.Wrapper<Flow> apply(@Nullable Flow input) {
  34                     return FLOW_EQUIVALENCE.wrap(input);
  35                 }
  36             };
  37
  38     public static final MatchEquivalence MATCH_EQUIVALENCE = new MatchEquivalence();
  39
  40 }