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  /*
   * Copyright 2010 JBoss Inc
   *
   * 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.drools.planner.config;
 
 import java.io.Reader;
 
XML based configuration that builds a org.drools.planner.core.Solver.
 
 public class XmlSolverConfigurer {
 
     public static XStream buildXstream() {
         XStream xStream = new XStream(new PureJavaReflectionProvider(new FieldDictionary(new NativeFieldKeySorter())));
         xStream.setMode(.);
         xStream.processAnnotations(SolverConfig.class);
         xStream.processAnnotations(CustomSolverPhaseConfig.class);
         xStream.processAnnotations(BruteForceSolverPhaseConfig.class);
         xStream.processAnnotations(LocalSearchSolverPhaseConfig.class);
         return xStream;
     }
 
     private XStream xStream;
     private SolverConfig solverConfig = null;
 
     public XmlSolverConfigurer() {
          = buildXstream();
     }
 
     public XmlSolverConfigurer(String resource) {
         this();
         configure(resource);
     }
 
     public void addXstreamAlias(Class aliasClass) {
         .processAnnotations(aliasClass);
     }
 
     public SolverConfig getSolverConfig() {
         return ;
     }
 
     // ************************************************************************
     // Worker methods
     // ************************************************************************
 
     public XmlSolverConfigurer configure(String resource) {
         InputStream in = getClass().getResourceAsStream(resource);
         if (in == null) {
             throw new IllegalArgumentException("The solver configuration (" + resource + ") does not exist.");
         }
         return configure(in);
     }
 
     public XmlSolverConfigurer configure(InputStream in) {
         Reader reader = null;
         try {
             reader = new InputStreamReader(in"utf-8");
             return configure(reader);
         } catch (UnsupportedEncodingException e) {
             throw new IllegalStateException("This vm does not support utf-8 encoding."e);
         } finally {
             IOUtils.closeQuietly(reader);
             IOUtils.closeQuietly(in);
         }
     }
 
     public XmlSolverConfigurer configure(Reader reader) {
          = (SolverConfig.fromXML(reader);
         return this;
    }
    public Solver buildSolver() {
        return .buildSolver();
    }
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