/*

  * Copyright 2004-2011 the Seasar Foundation and the Others.

  *

  * 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.seasar.teeda.core.scope.impl;

 import java.util.HashMap;

 import java.util.Map;

 import org.seasar.framework.container.InstanceDef;

 import org.seasar.framework.container.deployer.InstanceDefFactory;

 import org.seasar.teeda.core.scope.Scope;

 import org.seasar.teeda.core.scope.ScopeAlreadyRegisteredException;

 import org.seasar.teeda.core.scope.ScopeTranslator;

 /**

  * @author shot

  * 

  * Scope translation between Teeda and S2.

  */

 public class S2ScopeTranslator implements ScopeTranslator {

     private static final Map SCOPE_TO_INSTANCEDEF_MAP = new HashMap();

     private static final Map INSTANCEDEF_TO_SCOPE_MAP = new HashMap();

     static {

         SCOPE_TO_INSTANCEDEF_MAP.put(Scope.NONE, InstanceDefFactory.OUTER);

         SCOPE_TO_INSTANCEDEF_MAP.put(Scope.REQUEST, InstanceDefFactory.REQUEST);

         SCOPE_TO_INSTANCEDEF_MAP.put(Scope.SESSION, InstanceDefFactory.SESSION);

         SCOPE_TO_INSTANCEDEF_MAP.put(Scope.APPLICATION,

                 InstanceDefFactory.APPLICATION);

         INSTANCEDEF_TO_SCOPE_MAP.put(InstanceDefFactory.OUTER, Scope.NONE);

         INSTANCEDEF_TO_SCOPE_MAP.put(InstanceDefFactory.REQUEST, Scope.REQUEST);

         INSTANCEDEF_TO_SCOPE_MAP.put(InstanceDefFactory.SESSION, Scope.SESSION);

         INSTANCEDEF_TO_SCOPE_MAP.put(InstanceDefFactory.APPLICATION,

                 Scope.APPLICATION);

     }

     public Scope toScope(Object obj) {

         if (!(obj instanceof InstanceDef)) {

             throw new IllegalArgumentException();

         }

         return (Scope) INSTANCEDEF_TO_SCOPE_MAP.get(obj);

     }

     public Object toExternalComponentScope(Scope scope) {

         return SCOPE_TO_INSTANCEDEF_MAP.get(scope);

     }

     public void addScope(Scope scope, Object externalComponentScope)

             throws ScopeAlreadyRegisteredException {

         if (scope == null || externalComponentScope == null) {

             throw new IllegalArgumentException();

         }

         if (SCOPE_TO_INSTANCEDEF_MAP.containsKey(scope)) {

             throw new ScopeAlreadyRegisteredException(new Object[] { scope

                     .getScopeKey() });

         }

         SCOPE_TO_INSTANCEDEF_MAP.put(scope, externalComponentScope);

         INSTANCEDEF_TO_SCOPE_MAP.put(externalComponentScope, scope);

     }

 }