content: /*
   * 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.camel.component.file.strategy;
  
  import org.apache.camel.Exchange;
  import org.apache.camel.Expression;
  import org.apache.camel.component.file.GenericFile;
  import org.apache.camel.component.file.GenericFileOperations;
  import org.apache.camel.util.ObjectHelper;
  
  public class GenericFileExpressionRenamer<T> implements GenericFileRenamer<T> {
      private Expression expression;
  
      public GenericFileExpressionRenamer() {
      }
  
      public GenericFileExpressionRenamer(Expression expression) {
          this.expression = expression;
      }
  
      @Override
      public GenericFile<T> renameFile(GenericFileOperations<T> operations, Exchange exchange, GenericFile<T> file) {
          ObjectHelper.notNull(expression, "expression");
  
          String newName = expression.evaluate(exchange, String.class);
  
          // make a copy as result and change its file name
          GenericFile<T> result = operations.newGenericFile();
          file.copyFrom(file, result);
          result.changeFileName(newName);
          return result;
      }
  
      public Expression getExpression() {
          return expression;
      }
  
      public void setExpression(Expression expression) {
          this.expression = expression;
      }
  }
  