Example usage for org.springframework.jdbc.object BatchSqlUpdate setBatchSize

Introduction

In this page you can find the example usage for org.springframework.jdbc.object BatchSqlUpdate setBatchSize.

Prototype

public void setBatchSize(int batchSize) 

Source Link

Document

Set the number of statements that will trigger an automatic intermediate flush.

Usage

From source file:com.hmsinc.epicenter.tools.reclassifier.Reclassifier.java

@Transactional
public void run() {

    setup();//from w w w .jav a2  s  .  co  m

    final String destinationTable = (arguments.length > 4) ? arguments[4] : DEFAULT_TABLE_NAME;
    final String query = new StringBuilder("INSERT INTO ").append(destinationTable)
            .append(INSERT_CLASSIFICATION).toString();

    final BatchSqlUpdate updater = new BatchSqlUpdate(modelDataSource, query);
    updater.declareParameter(new SqlParameter(Types.BIGINT));
    updater.declareParameter(new SqlParameter(Types.BIGINT));
    updater.setBatchSize(BATCH_SIZE);
    updater.compile();

    final StatelessSession ss = ((Session) entityManager.getDelegate()).getSessionFactory()
            .openStatelessSession();

    final Criteria c = ss.createCriteria(target.getInteractionClass())
            .add(Restrictions.eq("patientClass", target.getPatientClass())).addOrder(Order.asc("id"))
            .setCacheable(false);

    if (arguments.length > 2) {
        c.add(Restrictions.gt("id", Long.valueOf(arguments[2])));
    }

    if (arguments.length > 3) {
        c.add(Restrictions.lt("id", Long.valueOf(arguments[3])));
    }

    final ScrollableResults sr = c.scroll(ScrollMode.FORWARD_ONLY);
    int i = 0;
    while (sr.next()) {

        final Interaction interaction = (Interaction) sr.get(0);
        final Set<Classification> classifications = classificationService.classify(interaction, target);

        save(interaction, classifications, updater);

        i++;
        if (i % BATCH_SIZE == 0) {
            logger.info("Processed {} interactions (current id: {})", i, interaction.getId());
        }

        ((Session) entityManager.getDelegate()).evict(interaction);
    }

    sr.close();

    updater.flush();
}

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From source file:org.springframework.jdbc.object.BatchSqlUpdateTests.java

private void doTestBatchUpdate(boolean flushThroughBatchSize) throws Exception {
    final String sql = "UPDATE NOSUCHTABLE SET DATE_DISPATCHED = SYSDATE WHERE ID = ?";
    final int[] ids = new int[] { 100, 200 };
    final int[] rowsAffected = new int[] { 1, 2 };

    MockControl ctrlPreparedStatement = MockControl.createControl(PreparedStatement.class);
    PreparedStatement mockPreparedStatement = (PreparedStatement) ctrlPreparedStatement.getMock();
    mockPreparedStatement.getConnection();
    ctrlPreparedStatement.setReturnValue(mockConnection);
    mockPreparedStatement.setObject(1, new Integer(ids[0]), Types.INTEGER);
    ctrlPreparedStatement.setVoidCallable();
    mockPreparedStatement.addBatch();//from  ww w  . j a  v  a2 s. c o  m
    ctrlPreparedStatement.setVoidCallable();
    mockPreparedStatement.setObject(1, new Integer(ids[1]), Types.INTEGER);
    ctrlPreparedStatement.setVoidCallable();
    mockPreparedStatement.addBatch();
    ctrlPreparedStatement.setVoidCallable();
    mockPreparedStatement.executeBatch();
    ctrlPreparedStatement.setReturnValue(rowsAffected);
    if (debugEnabled) {
        mockPreparedStatement.getWarnings();
        ctrlPreparedStatement.setReturnValue(null);
    }
    mockPreparedStatement.close();
    ctrlPreparedStatement.setVoidCallable();

    MockControl ctrlDatabaseMetaData = MockControl.createControl(DatabaseMetaData.class);
    DatabaseMetaData mockDatabaseMetaData = (DatabaseMetaData) ctrlDatabaseMetaData.getMock();
    mockDatabaseMetaData.supportsBatchUpdates();
    ctrlDatabaseMetaData.setReturnValue(true);

    mockConnection.prepareStatement(sql);
    ctrlConnection.setReturnValue(mockPreparedStatement);
    mockConnection.getMetaData();
    ctrlConnection.setReturnValue(mockDatabaseMetaData, 1);

    ctrlPreparedStatement.replay();
    ctrlDatabaseMetaData.replay();
    replay();

    BatchSqlUpdate update = new BatchSqlUpdate(mockDataSource, sql);
    update.declareParameter(new SqlParameter(Types.INTEGER));
    if (flushThroughBatchSize) {
        update.setBatchSize(2);
    }

    update.update(ids[0]);
    update.update(ids[1]);

    if (flushThroughBatchSize) {
        assertEquals(0, update.getQueueCount());
        assertEquals(2, update.getRowsAffected().length);
    } else {
        assertEquals(2, update.getQueueCount());
        assertEquals(0, update.getRowsAffected().length);
    }

    int[] actualRowsAffected = update.flush();
    assertEquals(0, update.getQueueCount());

    if (flushThroughBatchSize) {
        assertTrue("flush did not execute updates", actualRowsAffected.length == 0);
    } else {
        assertTrue("executed 2 updates", actualRowsAffected.length == 2);
        assertEquals(rowsAffected[0], actualRowsAffected[0]);
        assertEquals(rowsAffected[1], actualRowsAffected[1]);
    }

    actualRowsAffected = update.getRowsAffected();
    assertTrue("executed 2 updates", actualRowsAffected.length == 2);
    assertEquals(rowsAffected[0], actualRowsAffected[0]);
    assertEquals(rowsAffected[1], actualRowsAffected[1]);

    update.reset();
    assertEquals(0, update.getRowsAffected().length);

    ctrlPreparedStatement.verify();
    ctrlDatabaseMetaData.verify();
}

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