/*
    *    Copyright 2009-2023 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
    *
    *       https://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.mybatis.guice.mappers;
  
  import jakarta.inject.Inject;
  import jakarta.inject.Provider;
  
  import java.util.Objects;
  
  import org.apache.ibatis.session.SqlSessionManager;
  
  /**
   * A generic MyBatis mapper provider.
   */
  public final class MapperProvider<T> implements Provider<T> {
  
    private final Class<T> mapperType;
  
    @Inject
    private SqlSessionManager sqlSessionManager;
  
    public MapperProvider(Class<T> mapperType) {
      this.mapperType = mapperType;
    }
  
    public void setSqlSessionManager(SqlSessionManager sqlSessionManager) {
      this.sqlSessionManager = sqlSessionManager;
    }
  
    @Override
    public T get() {
      return this.sqlSessionManager.getMapper(mapperType);
    }
  
    @Override
    public int hashCode() {
      return Objects.hashCode(this.mapperType);
    }
  
    @Override
    public boolean equals(Object obj) {
      if (obj == null) {
        return false;
      }
      if (this.getClass() != obj.getClass()) {
        return false;
      }
      MapperProvider other = (MapperProvider) obj;
      return Objects.equals(this.mapperType, other.mapperType);
    }
  }