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;
  
  import java.util.Collection;
  import java.util.HashMap;
  import java.util.Map;
  import java.util.Set;
  
  import org.omg.dds.core.EntityQos;
  import org.omg.dds.core.ServiceEnvironment;
  import org.omg.dds.core.policy.PolicyFactory;
  import org.omg.dds.core.policy.QosPolicy;
  
  public abstract class EntityQosImpl<T extends QosPolicy> implements
          EntityQos<T> {
      private static final long serialVersionUID = -5714560284083338546L;
      protected final OsplServiceEnvironment environment;
      protected HashMap<Class<? extends T>, T> policies;
  
      public EntityQosImpl(OsplServiceEnvironment environment,
              Collection<T> policies) {
          this.environment = environment;
          this.policies = new HashMap<Class<? extends T>, T>();
          this.setupPolicies(policies);
          this.setupMissingPolicies();
      }
  
      public EntityQosImpl(OsplServiceEnvironment environment, T... policies) {
          this.environment = environment;
          this.policies = new HashMap<Class<? extends T>, T>();
          this.setupPolicies(policies);
          this.setupMissingPolicies();
      }
  
      protected void setupPolicies(Collection<T> policies) {
          synchronized(this.policies) {
              for (T p : policies) {
                  this.policies.put(this.getClassIdForPolicy(p), p);
              }
          }
      }
  
      protected void setupPolicies(T... policies) {
          synchronized(this.policies) {
              for (T p : policies) {
                  this.policies.put(this.getClassIdForPolicy(p), p);
              }
          }
      }
  
      @SuppressWarnings("unchecked")
      protected Class<? extends T> getClassIdForPolicy(T policy) {
          Class<?>[] interfaces = policy.getClass().getInterfaces();
  
          if (interfaces.length == 0) {
              throw new IllegalArgumentExceptionImpl(this.environment,
                      "Provided policy not a valid policy.");
          }
          /*
           * Ensure extended policies in OpenSplice are still stored using the OMG
           * class if it exists (as some policies are OpenSplice only, not all of
           * them have a OMG parent).
           */
          if (interfaces[0].getName().startsWith(
                  "org.opensplice.dds.core.policy.")) {
              Class<?>[] superInterfaces = interfaces[0].getInterfaces();
  
              if (superInterfaces.length != 0) {
                  if (!superInterfaces[0].getName().startsWith(
                          "org.omg.dds.core.policy.QosPolicy")) {
                      return (Class<? extends T>) (superInterfaces[0]);
                  }
              }
          }
          return (Class<? extends T>) interfaces[0];
      }
  
      @Override
      public ServiceEnvironment getEnvironment() {
          return this.environment;
      }
  
      @Override
      public void clear() {
          synchronized (this.policies) {
              this.policies.clear();
              this.setupMissingPolicies();
          }
      }
  
      @Override
      public boolean containsKey(Object arg0) {
          synchronized (this.policies) {
              return this.policies.containsKey(arg0);
          }
      }
  
      @Override
      public boolean containsValue(Object arg0) {
          synchronized (this.policies) {
              return this.policies.containsValue(arg0);
          }
      }
  
      @Override
      public Set<java.util.Map.Entry<Class<? extends T>, T>> entrySet() {
          synchronized (this.policies) {
              return this.policies.entrySet();
          }
      }
  
      @Override
      public T get(Object arg0) {
          synchronized (this.policies) {
              return this.policies.get(arg0);
          }
      }
  
      @Override
      public boolean isEmpty() {
          return false;
      }
  
      @Override
      public Set<Class<? extends T>> keySet() {
          synchronized (this.policies) {
              return this.policies.keySet();
          }
      }
  
      @Override
      public T put(Class<? extends T> arg0, T arg1) {
          synchronized (this.policies) {
              return this.policies.put(arg0, arg1);
          }
      }
  
      @Override
      public void putAll(Map<? extends Class<? extends T>, ? extends T> arg0) {
          synchronized (this.policies) {
              this.policies.putAll(arg0);
          }
      }
  
      @Override
      public T remove(Object arg0) {
          T removed = null;
  
          synchronized (this.policies) {
              removed = this.policies.remove(arg0);
              this.setupMissingPolicies();
          }
          return removed;
      }
  
      @Override
      public int size() {
          synchronized (this.policies) {
              return this.policies.size();
          }
      }
  
      @Override
      public Collection<T> values() {
          synchronized (this.policies) {
              return this.policies.values();
          }
      }
  
      @Override
      public <POLICY extends T> POLICY get(Class<POLICY> id) {
          synchronized (this.policies) {
              return id.cast(this.policies.get(id));
          }
      }
  
      @Override
      public PolicyFactory getPolicyFactory() {
          return PolicyFactory.getPolicyFactory(this.environment);
      }
  
      protected abstract void setupMissingPolicies();
  }
  