myBatis源码之SqlSessionFactoryBuilder

/*
* Builds {@link SqlSession} instances.
*
*/
/**
* @author Clinton Begin
*/
public class SqlSessionFactoryBuilder {

public SqlSessionFactory build(Reader reader) {
return build(reader, null, null);
}

public SqlSessionFactory build(Reader reader, String environment) {
return build(reader, environment, null);
}

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

public SqlSessionFactory build(Reader reader, String environment, Properties properties) {
try {
//解析myBatis配置文件，以字符流的方式
XMLConfigBuilder parser = new XMLConfigBuilder(reader, environment, properties);
return build(parser.parse());//获得SqlSessionFactory
} 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.
}
}
}

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

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

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

public SqlSessionFactory build(InputStream inputStream, String environment, Properties properties) {
try {
//解析myBatis配置文件，以字节流的方式
XMLConfigBuilder parser = new XMLConfigBuilder(inputStream, environment, properties);
return build(parser.parse());//获得SqlSessionFactory
} 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.
}
}
}

public SqlSessionFactory build(Configuration config) {
//获得sqlsessionFactory工厂，再从工厂中获得sqlsession
return new DefaultSqlSessionFactory(config);
}

}