bigtop-master/bigtop-bigpetstore/bigpetstore-mapreduce/src/main/java/org/apache/bigtop/bigpetstore/generator/util/ProductType.java
/**
 * 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
 * <p/>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p/>
 * 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.bigtop.bigpetstore.generator.util;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public enum ProductType {
  DOG, CAT, TURTLE, FISH, DUCK;

  private List<Product> products;

  public List<Product> getProducts() {
    if(products == null) {
      generateProductList();
    }
    return products;
  }

  private void generateProductList() {
    List<Product> products = new ArrayList<>();
    for(Product p : Product.values()) {
      if(p.productType == this) {
        products.add(p);
      }
    }
    this.products = Collections.unmodifiableList(products);
  }

}
