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 storm.trident.tuple;
  
  import backtype.storm.tuple.Fields;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import org.apache.commons.lang.builder.ToStringBuilder;
  
  public class ValuePointer {
      public static Map<String, ValuePointer> buildFieldIndex(ValuePointer[] pointers) {
          Map<String, ValuePointer> ret = new HashMap<String, ValuePointer>();
          for(ValuePointer ptr: pointers) {
              ret.put(ptr.field, ptr);
          }
          return ret;        
      }
  
      public static ValuePointer[] buildIndex(Fields fieldsOrder, Map<String, ValuePointer> pointers) {
          if(fieldsOrder.size()!=pointers.size()) {
              throw new IllegalArgumentException("Fields order must be same length as pointers map");
          }
          ValuePointer[] ret = new ValuePointer[pointers.size()];
          for(int i=0; i<fieldsOrder.size(); i++) {
              ret[i] = pointers.get(fieldsOrder.get(i));
          }
          return ret;
      }    
      
      public int delegateIndex;
      protected int index;
      protected String field;
      
      public ValuePointer(int delegateIndex, int index, String field) {
          this.delegateIndex = delegateIndex;
          this.index = index;
          this.field = field;
      }
  
      @Override
      public String toString() {
          return ToStringBuilder.reflectionToString(this);
      }    
  }
  