Package org.springframework.batch.sample.domain.trade.internal

Class GeneratingTradeItemReader

  • All Implemented Interfaces:
    ItemReader<Trade>
    public class GeneratingTradeItemReader
extends java.lang.Object
implements ItemReader<Trade>
    Generates configurable number of Trade items.
    Author:
    Robert Kasanicky

    • Constructor Detail

      • GeneratingTradeItemReader

        public GeneratingTradeItemReader()

    • Method Detail

      • read

        public Trade read()
           throws java.lang.Exception
        Description copied from interface: 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.
        Specified by:
        read in interface ItemReader<Trade>
        Returns:
        T the item to be processed or null if the data source is exhausted
        Throws:
        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)
        Parameters:
        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()