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POHibernate Batch Processing Using Native SQL
 

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    <p>I have an application using hibernate. One of its modules calls a native SQL (StoredProc) in batch process. Roughly what it does is that every time it writes a file it updates a field in the database. Right now I am not sure how many files would need to be written as it is dependent on the number of transactions per day so it could be zero to a million. </p> <p>If I use this code snippet in while loop will I have any problems?</p> <pre><code>@Transactional public void test() { //The for loop represents a list of records that needs to be processed. for (int i = 0; i &lt; 1000000; i++ ) { //Process the records and write the information into a file. ... //Update a field(s) in the database using a stored procedure based on the processed information. updateField(String.valueOf(i)); } } @Transactional(propagation=propagation.MANDATORY) public void updateField(String value) { Session session = getSession(); SQLQuery sqlQuery = session.createSQLQuery("exec spUpdate :value"); sqlQuery.setParameter("value", value); sqlQuery.executeUpdate(); } </code></pre> <p>Will I need any other configurations for my data source and transaction manager?</p> <p>Will I need to set hibernate.jdbc.batch_size and hibernate.cache.use_second_level_cache?</p> <p>Will I need to use session flush and clear for this? The samples in the hibernate tutorial is using POJO's and not native sql so I am not sure if it is also applicable.</p> <p>Please note another part of the application is already using hibernate so as much as possible I would like to stick to using hibernate.</p> <p>Thank you for your time and I am hoping for your quick response. If it is also possible could code snippet would really be useful for me.</p> <hr> <p>Application Work Flow </p> <p>1) Query Database for the transaction information. (Transaction date, Type of account, currency, etc..)</p> <p>2) For each account process transaction information. (Discounts, Current Balance, etc..)</p> <p>3) Write the transaction information and processed information to a file.</p> <p>4) <strong>Update a database field based on the process information</strong></p> <p>5) Go back to step 2 while their are still accounts. (Assuming that no exception are thrown)</p>
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    1. USJefrey Valencia
    1. USJefrey Valencia
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    1. COBump!! Anybody have any other ideas?
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    2. COBump! Can anyone answer the question about the batch size, second level caching, session flush/clear please!!!
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      1. USJefrey Valencia
 

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