/*

  * Licensed to the Apache Software Foundation (ASF) under one

  * or more contributor license agreements.  See the NOTICE file

  * distributed with this work for additional information

  * regarding copyright ownership.  The ASF licenses this file

  * to you 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.apache.maven.toolchain;

 import java.util.HashMap;

 import java.util.Iterator;

 import java.util.Map;

 import org.apache.maven.toolchain.model.ToolchainModel;

 import org.codehaus.plexus.logging.Logger;

 /**

  *

  * @author mkleint

  */

 public abstract class DefaultToolchain

     implements Toolchain, ToolchainPrivate

 {

     private String type;

     private Map provides = new HashMap /*<String,RequirementMatcher>*/ (  );

     public static final String KEY_TYPE = "type"; //NOI18N

     private ToolchainModel model;

     private Logger logger;

     protected DefaultToolchain( ToolchainModel model, Logger logger ) 

     {

         this.model = model;

         this.logger = logger;

     }

     protected DefaultToolchain( ToolchainModel model, String type, Logger logger )

     {

         this( model, logger );

         this.type = type;

     }

     public final String getType( )

     {

         return type != null ? type : model.getType();

     }

     public final ToolchainModel getModel( ) 

     {

         return model;

     }

     public final void addProvideToken( String type,

                                        RequirementMatcher matcher )

     {

         provides.put( type, matcher );

     }

     public boolean matchesRequirements(Map requirements) {

         Iterator it = requirements.keySet().iterator();

         while ( it.hasNext() )

         {

             String key = (String) it.next();

             RequirementMatcher matcher = (RequirementMatcher) provides.get(key);

             if ( matcher == null )

             {

                 getLog().debug( "Toolchain "  + this + " is missing required property: "  + key );

                 return false;

             }

             if ( !matcher.matches( (String) requirements.get(key) ) )

             {

                 getLog().debug( "Toolchain "  + this + " doesn't match required property: "  + key );

                 return false;

             }

         }

         return true;

     }

     protected Logger getLog() {

         return logger;

     }

 }