Java PersistenceBroker.getCount方法代码示例

import org.apache.ojb.broker.PersistenceBroker; //导入方法依赖的package包/类
/**
 * Determines the number of elements that the query would return. Override this
 * method if the size shall be determined in a specific way.
 * 
 * @return The number of elements
 */
protected synchronized int loadSize() throws PersistenceBrokerException
{
    PersistenceBroker broker = getBroker();
    try
    {
        return broker.getCount(getQuery());
    }
    catch (Exception ex)
    {
        throw new PersistenceBrokerException(ex);
    }
    finally
    {
        releaseBroker(broker);
    }
}
 

import org.apache.ojb.broker.PersistenceBroker; //导入方法依赖的package包/类
protected int getDBObjectCountWithNewPB(PBKey pbKey, Class target) throws Exception
{
    PersistenceBroker broker = PersistenceBrokerFactory.createPersistenceBroker(pbKey);
    Criteria c = new Criteria();
    Query q = new QueryByCriteria(target, c);
    int count = broker.getCount(q);
    broker.close();
    return count;
}
 

import org.apache.ojb.broker.PersistenceBroker; //导入方法依赖的package包/类
private void checkGeneratedObjects(int testObjects)
{
    PersistenceBroker broker = PersistenceBrokerFactory.defaultPersistenceBroker();
    int res_1;
    int res_2;
    try
    {
        Criteria crit = new Criteria();
        crit.addLike("name", goodName+"%");
        Criteria crit2 = new Criteria();
        crit2.addLike("name", badName+"%");
        crit.addOrCriteria(crit2);
        Query q_1 = new QueryByCriteria(MTObjectA.class, crit);
        Query q_2 = new QueryByCriteria(MTObjectB.class, crit);
        res_1 = broker.getCount(q_1);
        res_2 = broker.getCount(q_2);
    }
    finally
    {
        if(broker != null && !broker.isClosed()) broker.close();
    }
    assertEquals(testObjects, res_1);
    assertEquals(testObjects, res_2);

}
 

import org.apache.ojb.broker.PersistenceBroker; //导入方法依赖的package包/类
/**
 * test to check PB create with PBKey
 */
public void testLookupPB1()
{
    PBKey key1 = new PBKey(TestHelper.DEF_JCD_ALIAS);
    PBKey key2 = new PBKey(TestHelper.DEF_JCD_ALIAS, TestHelper.DEF_USER, TestHelper.DEF_PASSWORD);
    PBKey key3 = new PBKey(TestHelper.FAR_AWAY_JCD_ALIAS);
    Query query = QueryFactory.newQuery(TEST_CLASS, new Criteria());

    PersistenceBroker broker = PersistenceBrokerFactory.createPersistenceBroker(key1);
    broker.getCount(query);
    broker.close();

    broker = PersistenceBrokerFactory.createPersistenceBroker(key2);
    broker.getCount(query);
    broker.close();

    broker = PersistenceBrokerFactory.createPersistenceBroker(key3);
    broker.getCount(query);
    broker.close();
}
 

import org.apache.ojb.broker.PersistenceBroker; //导入方法依赖的package包/类
/**
 * test to check PB create with PBKey
 */
public void testLookupPB2()
{
    PBKey key1 = new PBKey(TestHelper.DEF_JCD_ALIAS, "!!TestCase: This should fail!!", "nothing");
    Query query = QueryFactory.newQuery(TEST_CLASS, new Criteria());
    PersistenceBroker broker = PersistenceBrokerFactory.createPersistenceBroker(key1);
    // hsql is not very strict in user handling
    try
    {
        broker.getCount(query);
        fail("We excect a exception, because we pass a PBKey with user and password that doesn't exist");
    }
    catch (Exception e)
    {
        assertTrue(true);
    }
    broker.close();
}
 

import org.apache.ojb.broker.PersistenceBroker; //导入方法依赖的package包/类
public int articleCount()
{
    Criteria c = new Criteria();
    Query q = new QueryByCriteria(PerfArticleImpl.class, c);
    int count = 0;
    try
    {
        PersistenceBroker broker = PersistenceBrokerFactory.defaultPersistenceBroker();
        count = broker.getCount(q);
        broker.close();
    }
    catch (Exception e)
    {
        e.printStackTrace();
    }
    return count;
}
 

import org.apache.ojb.broker.PersistenceBroker; //导入方法依赖的package包/类
protected int getDBObjectCount(PersistenceBroker broker, Class target) throws Exception
{
    Criteria c = new Criteria();
    Query q = new QueryByCriteria(target, c);
    int count = broker.getCount(q);
    return count;
}
 

import org.apache.ojb.broker.PersistenceBroker; //导入方法依赖的package包/类
protected int getDBObjectCountWithNewPB(Class target) throws Exception
{
    PersistenceBroker broker = PersistenceBrokerFactory.defaultPersistenceBroker();
    Criteria c = new Criteria();
    Query q = new QueryByCriteria(target, c);
    int count = broker.getCount(q);
    broker.close();
    return count;
}
 

import org.apache.ojb.broker.PersistenceBroker; //导入方法依赖的package包/类
protected int getCount(Class target)
{
    PersistenceBroker broker = getBroker();
    int result = broker.getCount(new QueryByCriteria(target));
    broker.close();
    return result;
}
 

import org.apache.ojb.broker.PersistenceBroker; //导入方法依赖的package包/类
/**
 * Return the count of all objects found
 * for given class.
 */
public int getCount(Class target)
{
    PersistenceBroker broker = getBroker();
    int result;
    try
    {
        result = broker.getCount(new QueryByCriteria(target));
    }
    finally
    {
        if (broker != null) broker.close();
    }
    return result;
}
 

import org.apache.ojb.broker.PersistenceBroker; //导入方法依赖的package包/类
/**
 * Return the count of all objects found
 * for given class, using the PB-api within
 * ODMG - this may change in further versions.
 */
public int getCount(Class target)
{
    PersistenceBroker broker = ((HasBroker) odmg.currentTransaction()).getBroker();
    int result = broker.getCount(new QueryByCriteria(target));
    return result;
}
 

import org.apache.ojb.broker.PersistenceBroker; //导入方法依赖的package包/类
public void testLockLoop() throws Exception
{
    int loops = 10;
    Article[] arr = new Article[loops];
    for(int i = 0; i < loops; i++)
    {
        Article a = createArticle("testLockLoop");
        arr[i] = a;
    }

    TransactionImpl tx = (TransactionImpl) odmg1.newTransaction();
    tx.begin();
    for(int i = 0; i < arr.length; i++)
    {
        tx.lock(arr[i], Transaction.WRITE);
    }
    LockManager lm = LockManagerFactory.getLockManager();
    boolean success = lm.writeLock(tx, arr[(loops - 2)]);
    assertTrue("lock should succeed", success);
    tx.commit();

    TransactionImpl tx2 = (TransactionImpl) odmg2.newTransaction();
    tx2.begin();
    success = lm.writeLock(tx2, arr[(loops - 2)]);
    assertTrue("lock should succeed", success);

    OQLQuery query = odmg2.newOQLQuery();
    String sql = "select allArticles from " + Article.class.getName() +
            " where articleName = \"" + PRE + "testLockLoop" + "\"";
    query.create(sql);
    int result = ((List) query.execute()).size();
    tx2.commit();
    assertEquals("Wrong number of objects wrote to DB", loops, result);

    PersistenceBroker broker = PersistenceBrokerFactory.defaultPersistenceBroker();
    broker.clearCache();
    Criteria crit = new Criteria();
    crit.addLike("articleName", PRE + "testLockLoop");
    result = broker.getCount(QueryFactory.newQuery(Article.class, crit));
    broker.close();
    assertEquals("Wrong number of objects wrote to DB", loops, result);
}