mybatis3源码阅读之SqlSessionFactoryBuilder

/**
   构造器，根据配置或者代码生成SqlSessionFactory，采用分布构建的Builder模式 
/*
public class SqlSessionFactoryBuilder {
　/**
　　　　传入用于读取字符流的类。
  /*
  public SqlSessionFactory build(Reader reader) {
    return build(reader, null, null);
  }
　/**
　　　　传入用于读取字符流的类和环境配置(不同环境数据库各种连接配置不一样)
  /*
  public SqlSessionFactory build(Reader reader, String environment) {
    return build(reader, environment, null);
  }
　　
/**
　　　　传入用于读取字符流的类和环境配置(不同环境数据库各种连接配置不一样)
  /*
  public SqlSessionFactory build(Reader reader, Properties properties) 
  { return build(reader, null, properties);  
  } 

/**
  　传入用于读取字符流的类和配置文件

/*

public SqlSessionFactory build(Reader reader, Properties properties) {
  return build(reader, null, properties);
}
/* 构造

SqlSessionFactory 具体实现(传入字符流)

/*
public SqlSessionFactory build(Reader reader, String environment, Properties properties) {
  try {
    XMLConfigBuilder parser = new XMLConfigBuilder(reader, environment, properties);
    return build(parser.parse());
  } catch (Exception e) {
    throw ExceptionFactory.wrapException("Error building SqlSession.", e);
  } finally {
    ErrorContext.instance().reset();
    try {
      reader.close();
    } catch (IOException e) {
      // Intentionally ignore. Prefer previous error.
    }
  }
}
/** 
传入字节流
/*

public SqlSessionFactory build(InputStream inputStream) {
  return build(inputStream, null, null);
}

/** 
　　传入字节流和环境配置
/*

public SqlSessionFactory build(InputStream inputStream, String environment) {
  return build(inputStream, environment, null);
}

/** 
　　传入字节流和配置文件
/*

public SqlSessionFactory build(InputStream inputStream, Properties properties) {
  return build(inputStream, null, properties);
}

/* 构造

SqlSessionFactory 具体实现(传入字节流)
/*

public SqlSessionFactory build(InputStream inputStream, String environment, Properties properties) {
  try {
    XMLConfigBuilder parser = new XMLConfigBuilder(inputStream, environment, properties);
    return build(parser.parse());
  } catch (Exception e) {
    throw ExceptionFactory.wrapException("Error building SqlSession.", e);
  } finally {
    ErrorContext.instance().reset();
    try {
      inputStream.close();
    } catch (IOException e) {
      // Intentionally ignore. Prefer previous error.
    }
  }
}

/**
  核心，根据配置配置生成SqlSessionFactory  以上实现都是读取配置转换成配置对象在调用此方法。

/*　

public SqlSessionFactory build(Configuration config) {
  return new DefaultSqlSessionFactory(config);
}