Package org.springframework.batch.sample.support

Class ExceptionThrowingItemReaderProxy<T>

  • All Implemented Interfaces:
    ItemReader<T>
    public class ExceptionThrowingItemReaderProxy<T>
extends java.lang.Object
implements ItemReader<T>
    Hacked ItemReader that throws exception on a given record number (useful for testing restart).
    Author:
    Robert Kasanicky, Lucas Ward

    • Constructor Detail

      • ExceptionThrowingItemReaderProxy

        public ExceptionThrowingItemReaderProxy()

    • Method Detail

      • setThrowExceptionOnRecordNumber

        public void setThrowExceptionOnRecordNumber​(int throwExceptionOnRecordNumber)
        Parameters:
        throwExceptionOnRecordNumber - The number of record on which exception should be thrown

      • read

        public T 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<T>
        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.

      • setDelegate

        public void setDelegate​(ItemReader<T> delegate)