Example usage for org.springframework.batch.item ReaderNotOpenException ReaderNotOpenException

Introduction

In this page you can find the example usage for org.springframework.batch.item ReaderNotOpenException ReaderNotOpenException.

Prototype

public ReaderNotOpenException(String message) 

Source Link

Document

Create a new ReaderNotOpenException based on a message.

Usage

From source file:org.springframework.batch.sample.common.StagingItemReader.java

@Override
public ProcessIndicatorItemWrapper<T> read() {
    if (!initialized) {
        throw new ReaderNotOpenException("Reader must be open before it can be used.");
    }/*from  w  ww.  java 2  s  .  c o  m*/

    Long id = null;
    synchronized (lock) {
        if (keys.hasNext()) {
            id = keys.next();
        }
    }
    logger.debug("Retrieved key from list: " + id);

    if (id == null) {
        return null;
    }
    @SuppressWarnings("unchecked")
    T result = (T) jdbcTemplate.queryForObject("SELECT VALUE FROM BATCH_STAGING WHERE ID=?",
            new RowMapper<Object>() {
                @Override
                public Object mapRow(ResultSet rs, int rowNum) throws SQLException {
                    byte[] blob = rs.getBytes(1);
                    return SerializationUtils.deserialize(blob);
                }
            }, id);

    return new ProcessIndicatorItemWrapper<T>(id, result);
}

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