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.ververica.field.dynamicrules;
  
  import java.lang.reflect.Field;
  import java.math.BigDecimal;
  
  public class FieldsExtractor {
  
    public static String getFieldAsString(Object object, String fieldName)
        throws IllegalAccessException, NoSuchFieldException {
      Class cls = object.getClass();
      Field field = cls.getField(fieldName);
      return field.get(object).toString();
    }
  
    public static double getDoubleByName(String fieldName, Object object)
        throws NoSuchFieldException, IllegalAccessException {
      Field field = object.getClass().getField(fieldName);
      return (double) field.get(object);
    }
  
    public static BigDecimal getBigDecimalByName(String fieldName, Object object)
        throws NoSuchFieldException, IllegalAccessException {
      Field field = object.getClass().getField(fieldName);
      return new BigDecimal(field.get(object).toString());
    }
  
    @SuppressWarnings("unchecked")
    public static <T> T getByKeyAs(String keyName, Object object)
        throws NoSuchFieldException, IllegalAccessException {
      Field field = object.getClass().getField(keyName);
      return (T) field.get(object);
    }
  }
  