Examples of QueryByIdentity

org.apache.ojb.broker.query.QueryByIdentity
Represents a search by identity. "find the article with id 7" could be represented as:

Article example = new Article(); example.setId(7); Query qry = new QueryByIdentity(example);
The PersistenceBroker can retrieve Objects by examples as follows:

PersistenceBroker broker = PersistenceBrokerFactory.createPersistenceBroker(); Collection col = broker.getObjectByQuery(qry);
This Class can also handle working with OJB Identity objects: "find the article with Identity xyz" could be represnted as

Article example = new Article(); example.setId(7); Identity xyz = broker.serviceIdentity().buildIdentity(example); Query qry = new QueryByIdentity(xyz); Collection col = broker.getObjectByQuery(qry);
But in this case a smarter solution will be

Identity xyz = broker.serviceIdentity().buildIdentity(Article.class, new Integer(7)); Collection col = broker.getObjectByIdentity(xyz); @author Thomas Mahler @version $Id: QueryByIdentity.java,v 1.9.2.3 2005/12/21 22:27:09 tomdz Exp $

Examples of org.apache.ojb.broker.query.QueryByIdentity

        else
        {
            // if query is Identity based transform it to a criteria based query first
            if (query instanceof QueryByIdentity)
            {
                QueryByIdentity qbi = (QueryByIdentity) query;
                Object oid = qbi.getExampleObject();
                // make sure it's an Identity
                if (!(oid instanceof Identity))
                {
                    oid = new Identity(oid, this);
                }

View Full Code Here

Examples of org.apache.ojb.broker.query.QueryByIdentity

        tx.abort();


        tx = (TransactionExt) odmg.newTransaction();
        tx.begin();
        broker = tx.getBroker();
        QueryByIdentity query2 = new QueryByIdentity(obj);
        Object result = broker.getObjectByQuery(query2);
        tx.commit();


        assertNull("We should not find objects from aborted tx", result);
    }

View Full Code Here

Examples of org.apache.ojb.broker.query.QueryByIdentity

        tx.abort();


        tx = (TransactionExt) odmg.newTransaction();
        tx.begin();
        broker = tx.getBroker();
        QueryByIdentity query2 = new QueryByIdentity(obj);
        Object result = broker.getObjectByQuery(query2);
        tx.commit();


        assertNull("We should not find objects from aborted tx", result);
    }

View Full Code Here

Examples of org.apache.ojb.broker.query.QueryByIdentity

        else
        {
            // if query is Identity based transform it to a criteria based query first
            if (query instanceof QueryByIdentity)
            {
                QueryByIdentity qbi = (QueryByIdentity) query;
                Object oid = qbi.getExampleObject();
                // make sure it's an Identity
                if (!(oid instanceof Identity))
                {
                    oid = new Identity(oid, this);
                }

View Full Code Here

Examples of org.apache.ojb.broker.query.QueryByIdentity

        Product result  = null;


        example.setId(id);


        // 2. build a QueryByIdentity from this sample instance:
        Query             query  = new QueryByIdentity(example);
        PersistenceBroker broker = null;


        try
        {
            // 3. get a broker and lookup the product specified by the QBE

View Full Code Here

Examples of org.apache.ojb.broker.query.QueryByIdentity

        Product example = new Product();


        example.setId(id);


        // 2. build a QueryByIdentity from this sample instance:
        Query             query  = new QueryByIdentity(example);
        PersistenceBroker broker = null;


        try
        {
            // 3. get a broker

View Full Code Here

Examples of org.apache.ojb.broker.query.QueryByIdentity

        GUID guid = new GUID();


        PersistenceBroker broker1 = PersistenceBrokerFactory.defaultPersistenceBroker();
        broker1.beginTransaction();


        Article a1 = (Article) broker1.getObjectByQuery(new QueryByIdentity(oid));
        String originalName = a1.getArticleName();
        a1.setArticleName(guid.toString());


// start a second transaction
        PersistenceBroker broker2 = PersistenceBrokerFactory.defaultPersistenceBroker();
        broker2.beginTransaction();


        Article a2 = (Article) broker2.getObjectByQuery(new QueryByIdentity(oid));


        assertEquals(guid.toString(), a1.getArticleName());
        assertEquals(originalName, a2.getArticleName());
        assertNotSame(a1, a2);

View Full Code Here

0 1 2 3

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.