类 GeneratingTradeItemReader

构造器详细资料

• GeneratingTradeItemReader

  public GeneratingTradeItemReader()

方法详细资料

• read

  public Trade read()
             throws java.lang.Exception

  从接口复制的说明: ItemReader
  Reads a piece of input data and advance to the next one. Implementations must return null at the end of the input data set. In a transactional setting, caller might get the same item twice from successive calls (or otherwise), if the first call was in a transaction that rolled back.

  指定者:

  read 在接口中 ItemReader<Trade>

  返回:

  T the item to be processed or null if the data source is exhausted

  抛出:

  ParseException - if there is a problem parsing the current record (but the next one may still be valid)

  NonTransientResourceException - if there is a fatal exception in the underlying resource. After throwing this exception implementations should endeavour to return null from subsequent calls to read.

  UnexpectedInputException - if there is an uncategorised problem with the input data. Assume potentially transient, so subsequent calls to read might succeed.

  java.lang.Exception - if an there is a non-specific error.

• setLimit

  public void setLimit​(int limit)

  参数:

  limit - number of items that will be generated (null returned on consecutive calls).

• getCounter

  public int getCounter()

• getLimit

  public int getLimit()

• resetCounter

  public void resetCounter()