/**
    *    Copyright 2009-2015 the original author or authors.
    *
    *    Licensed 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.ibatis.mapping;
  
  import javax.sql.DataSource;
  
  import org.apache.ibatis.transaction.TransactionFactory;
  
  /**
   * @author Clinton Begin
   */
  public final class Environment {
    private final String id;
    private final TransactionFactory transactionFactory;
    private final DataSource dataSource;
  
    public Environment(String id, TransactionFactory transactionFactory, DataSource dataSource) {
      if (id == null) {
        throw new IllegalArgumentException("Parameter 'id' must not be null");
      }
      if (transactionFactory == null) {
          throw new IllegalArgumentException("Parameter 'transactionFactory' must not be null");
      }
      this.id = id;
      if (dataSource == null) {
        throw new IllegalArgumentException("Parameter 'dataSource' must not be null");
      }
      this.transactionFactory = transactionFactory;
      this.dataSource = dataSource;
    }
  
    public static class Builder {
        private String id;
        private TransactionFactory transactionFactory;
        private DataSource dataSource;
  
      public Builder(String id) {
        this.id = id;
      }
  
      public Builder transactionFactory(TransactionFactory transactionFactory) {
        this.transactionFactory = transactionFactory;
        return this;
      }
  
      public Builder dataSource(DataSource dataSource) {
        this.dataSource = dataSource;
        return this;
      }
  
      public String id() {
        return this.id;
      }
  
      public Environment build() {
        return new Environment(this.id, this.transactionFactory, this.dataSource);
      }
  
    }
  
    public String getId() {
      return this.id;
    }
  
    public TransactionFactory getTransactionFactory() {
      return this.transactionFactory;
    }
  
    public DataSource getDataSource() {
      return this.dataSource;
    }
  
  }