content: /*
   *                         Vortex OpenSplice
   *
   *   This software and documentation are Copyright 2006 to TO_YEAR ADLINK
   *   Technology Limited, its affiliated companies and licensors. All rights
   *   reserved.
   *
   *   Licensed under the Apache License, Version 2.0 (the "License");
   *   you may not use this file except in compliance with the License.
   *   You may obtain a copy of the License at
   *
   *       http://www.apache.org/licenses/LICENSE-2.0
   *
   *   Unless required by applicable law or agreed to in writing, software
   *   distributed under the License is distributed on an "AS IS" BASIS,
   *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *   See the License for the specific language governing permissions and
   *   limitations under the License.
   *
   */
  package org.opensplice.dds.core.policy;
  
  import org.omg.dds.core.policy.Presentation;
  import org.omg.dds.core.policy.QosPolicy;
  import org.opensplice.dds.core.IllegalArgumentExceptionImpl;
  import org.opensplice.dds.core.OsplServiceEnvironment;
  
  public class PresentationImpl extends QosPolicyImpl implements Presentation {
      private static final long serialVersionUID = 2403290580864742451L;
      private final boolean coherentAccess;
      private final boolean orderedAccess;
      private final AccessScopeKind accessScope;
  
      public PresentationImpl(OsplServiceEnvironment environment) {
          super(environment);
          this.coherentAccess = false;
          this.orderedAccess = false;
          this.accessScope = AccessScopeKind.INSTANCE;
      }
  
      public PresentationImpl(OsplServiceEnvironment environment,
              AccessScopeKind accessScope, boolean coherentAccess,
              boolean orderedAccess) {
          super(environment);
  
          if (accessScope == null) {
              throw new IllegalArgumentExceptionImpl(environment,
                      "Supplied access scope is invalid.");
          }
          this.accessScope = accessScope;
          this.coherentAccess = coherentAccess;
          this.orderedAccess = orderedAccess;
      }
  
      @Override
      public Comparable<Presentation> requestedOfferedContract() {
          return this;
      }
  
      @Override
      public int compareTo(Presentation o) {
          AccessScopeKind other = o.getAccessScope();
  
          /* INSTANCE < TOPIC < GROUP */
          /* offered access_scope >= requested access_scope */
          if (other.equals(this.accessScope)) {
              if (this.coherentAccess == o.isCoherentAccess()) {
                  if (this.orderedAccess == o.isOrderedAccess()) {
                      return 0;
                  } else if (this.orderedAccess) {
                      return 1;
                  }
                  return -1;
              } else if (this.orderedAccess == o.isOrderedAccess()) {
                  if (this.coherentAccess) {
                      return 1;
                  }
                  return -1;
              } else if (this.coherentAccess) {
                  return 1;
              }
              return -1;
          } else if (this.accessScope.equals(AccessScopeKind.INSTANCE)) {
              return -1;
          } else if (this.accessScope.equals(AccessScopeKind.TOPIC)) {
              if (other.equals(AccessScopeKind.INSTANCE)) {
                  return 1;
              }
              return -1;
          }
          return 1;
      }
  
      @Override
      public boolean equals(Object other) {
          if (!(other instanceof PresentationImpl)) {
              return false;
          }
          PresentationImpl p = (PresentationImpl) other;
  
          if (p.coherentAccess != this.coherentAccess) {
              return false;
          }
          if (p.orderedAccess != this.orderedAccess) {
              return false;
          }
          if (p.accessScope != this.accessScope) {
              return false;
          }
          return true;
      }
  
      @Override
      public AccessScopeKind getAccessScope() {
          return this.accessScope;
      }
  
      @Override
      public boolean isCoherentAccess() {
          return this.coherentAccess;
      }
  
      @Override
      public boolean isOrderedAccess() {
          return this.orderedAccess;
      }
  
      @Override
      public Presentation withAccessScope(AccessScopeKind accessScope) {
          return new PresentationImpl(this.environment, accessScope,
                  this.coherentAccess, this.orderedAccess);
      }
  
      @Override
      public Presentation withCoherentAccess(boolean coherentAccess) {
          return new PresentationImpl(this.environment, this.accessScope,
                  coherentAccess, this.orderedAccess);
      }
  
      @Override
      public Presentation withOrderedAccess(boolean orderedAccess) {
          return new PresentationImpl(this.environment, this.accessScope,
                  this.coherentAccess, orderedAccess);
      }
  
      @Override
      public Presentation withInstance() {
          return new PresentationImpl(this.environment, AccessScopeKind.INSTANCE,
                  this.coherentAccess, this.orderedAccess);
      }
  
      @Override
      public Presentation withTopic() {
          return new PresentationImpl(this.environment, AccessScopeKind.TOPIC,
                  this.coherentAccess, this.orderedAccess);
      }
  
      @Override
      public Presentation withGroup() {
          return new PresentationImpl(this.environment, AccessScopeKind.GROUP,
                  this.coherentAccess, this.orderedAccess);
      }
  
      @Override
      public Class<? extends QosPolicy> getPolicyClass() {
          return Presentation.class;
      }
  
      @Override
      public int hashCode() {
          final int prime = 31;
          int result = 17;
  
          result = prime * result + this.accessScope.hashCode();
          result = prime * result + (this.coherentAccess ? 1 : 0);
  
          return prime * result + (this.orderedAccess ? 1 : 0);
      }
  }
  