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 com.alibaba.wasp.plan.parser;
  
  import com.alibaba.wasp.meta.Field;
  
  /**
   *
   */
  public class AggregateInfo {
  
    public enum AggregateType{
      SUM("SUM"),COUNT("COUNT");
  
      public String methodName;
  
      public String getMethodName(){
        return this.methodName;
      }
  
      AggregateType(String methodName) {
        this.methodName = methodName;
      }
    }
  
    public final AggregateType aggregateType;
  
    public final Field field;
  
    public AggregateInfo(AggregateType aggregateType, Field field) throws UnsupportedException {
      this.aggregateType = aggregateType;
      this.field = field;
    }
  
    public AggregateType getAggregateType() {
      return aggregateType;
    }
  
    public Field getField() {
      return field;
    }
  
    public static AggregateType getAggregateTypeByMethod(String method) throws UnsupportedException {
      for (AggregateType aggregateType : AggregateType.values()) {
        if(aggregateType.getMethodName().equalsIgnoreCase(method)) {
          return aggregateType;
        }
      }
      throw new UnsupportedException("un support Aggregate Method : " + method);
    }
  
  }
  