org.apache.ibatis.exceptions.ExceptionFactory Java Examples

private SqlSession openSessionFromDataSource(ExecutorType execType, TransactionIsolationLevel level, boolean autoCommit) {
  Transaction tx = null;
  try {
    final Environment environment = configuration.getEnvironment();
    final TransactionFactory transactionFactory = getTransactionFactoryFromEnvironment(environment);
    //通过事务工厂来产生一个事务
    tx = transactionFactory.newTransaction(environment.getDataSource(), level, autoCommit);
    //生成一个执行器(事务包含在执行器里)
    final Executor executor = configuration.newExecutor(tx, execType);
    //然后产生一个DefaultSqlSession
    return new DefaultSqlSession(configuration, executor, autoCommit);
  } catch (Exception e) {
    //如果打开事务出错，则关闭它
    closeTransaction(tx); // may have fetched a connection so lets call close()
    throw ExceptionFactory.wrapException("Error opening session.  Cause: " + e, e);
  } finally {
    //最后清空错误上下文
    ErrorContext.instance().reset();
  }
}
 

@SuppressWarnings("all")
private SqlSession openSessionFromDataSource(ExecutorType execType, TransactionIsolationLevel level, boolean autoCommit) {
    Transaction tx = null;
    try {
        final Environment environment = getConfiguration().getEnvironment();
        final TransactionFactory transactionFactory = getTransactionFactoryFromEnvironment(environment);
        DataSource ds = DataSourceHolder.currentDataSource().getNative();
        if (ds == null) {
            ds = environment.getDataSource();
        }
        tx = transactionFactory.newTransaction(ds, level, autoCommit);
        final Executor executor = getConfiguration().newExecutor(tx, execType);
        return new DefaultSqlSession(getConfiguration(), executor, autoCommit);
    } catch (Exception e) {
        closeTransaction(tx); // may have fetched a connection so lets call close()
        throw ExceptionFactory.wrapException("Error opening session.  Cause: " + e, e);
    } finally {
        ErrorContext.instance().reset();
    }
}
 

private SqlSession openSessionFromDataSource(ExecutorType execType, TransactionIsolationLevel level, boolean autoCommit) {
  Transaction tx = null;
  try {
    final Environment environment = configuration.getEnvironment();
    final TransactionFactory transactionFactory = getTransactionFactoryFromEnvironment(environment);
    //通过事务工厂来产生一个事务
    tx = transactionFactory.newTransaction(environment.getDataSource(), level, autoCommit);
    //生成一个执行器(事务包含在执行器里)
    final Executor executor = configuration.newExecutor(tx, execType);
    //然后产生一个DefaultSqlSession
    return new DefaultSqlSession(configuration, executor, autoCommit);
  } catch (Exception e) {
    //如果打开事务出错，则关闭它
    closeTransaction(tx); // may have fetched a connection so lets call close()
    throw ExceptionFactory.wrapException("Error opening session.  Cause: " + e, e);
  } finally {
    //最后清空错误上下文
    ErrorContext.instance().reset();
  }
}
 

@Override
public Connection getConnection() {
  try {
    return executor.getTransaction().getConnection();
  } catch (SQLException e) {
    throw ExceptionFactory.wrapException("Error getting a new connection.  Cause: " + e, e);
  }
}
 

@Override
public List<BatchResult> flushStatements() {
  try {
    //转而用执行器来flushStatements
    return executor.flushStatements();
  } catch (Exception e) {
    throw ExceptionFactory.wrapException("Error flushing statements.  Cause: " + e, e);
  } finally {
    ErrorContext.instance().reset();
  }
}
 

@Override
public void rollback(boolean force) {
  try {
    //转而用执行器来rollback
    executor.rollback(isCommitOrRollbackRequired(force));
    //每次rollback之后，dirty标志设为false
    dirty = false;
  } catch (Exception e) {
    throw ExceptionFactory.wrapException("Error rolling back transaction.  Cause: " + e, e);
  } finally {
    ErrorContext.instance().reset();
  }
}
 

@Override
public void commit(boolean force) {
  try {
    //转而用执行器来commit
    executor.commit(isCommitOrRollbackRequired(force));
    //每次commit之后，dirty标志设为false
    dirty = false;
  } catch (Exception e) {
    throw ExceptionFactory.wrapException("Error committing transaction.  Cause: " + e, e);
  } finally {
    ErrorContext.instance().reset();
  }
}
 

@Override
public int update(String statement, Object parameter) {
  try {
    //每次要更新之前，dirty标志设为true
    dirty = true;
    MappedStatement ms = configuration.getMappedStatement(statement);
    //转而用执行器来update结果
    return executor.update(ms, wrapCollection(parameter));
  } catch (Exception e) {
    throw ExceptionFactory.wrapException("Error updating database.  Cause: " + e, e);
  } finally {
    ErrorContext.instance().reset();
  }
}
 

@Override
public void select(String statement, Object parameter, RowBounds rowBounds, ResultHandler handler) {
  try {
    MappedStatement ms = configuration.getMappedStatement(statement);
    executor.query(ms, wrapCollection(parameter), rowBounds, handler);
  } catch (Exception e) {
    throw ExceptionFactory.wrapException("Error querying database.  Cause: " + e, e);
  } finally {
    ErrorContext.instance().reset();
  }
}
 

@Override
public <E> List<E> selectList(String statement, Object parameter, RowBounds rowBounds) {
  try {
    //根据statement id找到对应的MappedStatement
    MappedStatement ms = configuration.getMappedStatement(statement);
    //转而用执行器来查询结果,注意这里传入的ResultHandler是null
    return executor.query(ms, wrapCollection(parameter), rowBounds, Executor.NO_RESULT_HANDLER);
  } catch (Exception e) {
    throw ExceptionFactory.wrapException("Error querying database.  Cause: " + e, e);
  } finally {
    ErrorContext.instance().reset();
  }
}
 

@Override
public Connection getConnection() {
  try {
    return executor.getTransaction().getConnection();
  } catch (SQLException e) {
    throw ExceptionFactory.wrapException("Error getting a new connection.  Cause: " + e, e);
  }
}
 

@Override
public List<BatchResult> flushStatements() {
  try {
    //转而用执行器来flushStatements
    return executor.flushStatements();
  } catch (Exception e) {
    throw ExceptionFactory.wrapException("Error flushing statements.  Cause: " + e, e);
  } finally {
    ErrorContext.instance().reset();
  }
}
 

@Override
public void rollback(boolean force) {
  try {
    //转而用执行器来rollback
    executor.rollback(isCommitOrRollbackRequired(force));
    //每次rollback之后，dirty标志设为false
    dirty = false;
  } catch (Exception e) {
    throw ExceptionFactory.wrapException("Error rolling back transaction.  Cause: " + e, e);
  } finally {
    ErrorContext.instance().reset();
  }
}
 

@Override
public void commit(boolean force) {
  try {
    //转而用执行器来commit
    executor.commit(isCommitOrRollbackRequired(force));
    //每次commit之后，dirty标志设为false
    dirty = false;
  } catch (Exception e) {
    throw ExceptionFactory.wrapException("Error committing transaction.  Cause: " + e, e);
  } finally {
    ErrorContext.instance().reset();
  }
}
 

@Override
public int update(String statement, Object parameter) {
  try {
    //每次要更新之前，dirty标志设为true
    dirty = true;
    MappedStatement ms = configuration.getMappedStatement(statement);
    //转而用执行器来update结果
    return executor.update(ms, wrapCollection(parameter));
  } catch (Exception e) {
    throw ExceptionFactory.wrapException("Error updating database.  Cause: " + e, e);
  } finally {
    ErrorContext.instance().reset();
  }
}
 

@Override
public void select(String statement, Object parameter, RowBounds rowBounds, ResultHandler handler) {
  try {
    MappedStatement ms = configuration.getMappedStatement(statement);
    executor.query(ms, wrapCollection(parameter), rowBounds, handler);
  } catch (Exception e) {
    throw ExceptionFactory.wrapException("Error querying database.  Cause: " + e, e);
  } finally {
    ErrorContext.instance().reset();
  }
}
 

@Override
public <E> List<E> selectList(String statement, Object parameter, RowBounds rowBounds) {
  try {
    //根据statement id找到对应的MappedStatement
    MappedStatement ms = configuration.getMappedStatement(statement);
    //转而用执行器来查询结果,注意这里传入的ResultHandler是null
    return executor.query(ms, wrapCollection(parameter), rowBounds, Executor.NO_RESULT_HANDLER);
  } catch (Exception e) {
    throw ExceptionFactory.wrapException("Error querying database.  Cause: " + e, e);
  } finally {
    ErrorContext.instance().reset();
  }
}