Examples of org.apache.ojb.broker.accesslayer.ChainingIterator

Package org.apache.ojb.broker.accesslayer

Examples of org.apache.ojb.broker.accesslayer.ChainingIterator

org.apache.ojb.broker.accesslayer.ChainingIterator
@author matthew.baird (mattbaird@yahoo.com)The ChainingIterator is an extent aware Iterator. How the ChainingIterator works: The ChainedIterator holds a collection of RsIterators for each queried Interface-based extent. The RsIterator is able to load objects that are non-interface extents, mapped to the same table. The ChainingIterator cannot return sorted results as the iterator is a collection of query results across different tables. @version $Id: ChainingIterator.java,v 1.13.2.2 2005/12/21 22:22:58 tomdz Exp $

            return factory.createRsIterator(query, cld, this);
        }


        if(logger.isDebugEnabled()) logger.debug("Creating ChainingIterator for class ["+cld.getClassNameOfObject()+"]");


        ChainingIterator chainingIter = new ChainingIterator();


        // BRJ: add base class iterator
        if (!cld.isInterface())
        {
            if(logger.isDebugEnabled()) logger.debug("Adding RsIterator for class ["+cld.getClassNameOfObject()+"] to ChainingIterator");


            chainingIter.addIterator(factory.createRsIterator(query, cld, this));
        }


        Iterator extents = getDescriptorRepository().getAllConcreteSubclassDescriptors(cld).iterator();
        while (extents.hasNext())
        {
            ClassDescriptor extCld = (ClassDescriptor) extents.next();


            // read same table only once
            if (chainingIter.containsIteratorForTable(extCld.getFullTableName()))
            {
                if(logger.isDebugEnabled()) logger.debug("Skipping class ["+extCld.getClassNameOfObject()+"]");
            }
            else
            {
                if(logger.isDebugEnabled()) logger.debug("Adding RsIterator of class ["+extCld.getClassNameOfObject()+"] to ChainingIterator");


                // add the iterator to the chaining iterator.
                chainingIter.addIterator(factory.createRsIterator(query, extCld, this));
            }
        }


        return chainingIter;
    }

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            return factory.createRsIterator(query, cld, this);
        }


        if(logger.isDebugEnabled()) logger.debug("Creating ChainingIterator for class ["+cld.getClassNameOfObject()+"]");


        ChainingIterator chainingIter = new ChainingIterator();


        // BRJ: add base class iterator
        if (!cld.isInterface())
        {
            if(logger.isDebugEnabled()) logger.debug("Adding RsIterator for class ["+cld.getClassNameOfObject()+"] to ChainingIterator");


            chainingIter.addIterator(factory.createRsIterator(query, cld, this));
        }


        Iterator extents = getDescriptorRepository().getAllConcreteSubclassDescriptors(cld).iterator();
        while (extents.hasNext())
        {
            ClassDescriptor extCld = (ClassDescriptor) extents.next();


            // read same table only once
            if (chainingIter.containsIteratorForTable(extCld.getFullTableName()))
            {
                if(logger.isDebugEnabled()) logger.debug("Skipping class ["+extCld.getClassNameOfObject()+"]");
            }
            else
            {
                if(logger.isDebugEnabled()) logger.debug("Adding RsIterator of class ["+extCld.getClassNameOfObject()+"] to ChainingIterator");


                // add the iterator to the chaining iterator.
                chainingIter.addIterator(factory.createRsIterator(query, extCld, this));
            }
        }


        return chainingIter;
    }

View Full Code Here

            return factory.createRsIterator(query, cld, this);
        }


        if(logger.isDebugEnabled()) logger.debug("Creating ChainingIterator for class ["+cld.getClassNameOfObject()+"]");


        ChainingIterator chainingIter = new ChainingIterator();


        // BRJ: add base class iterator
        if (!cld.isInterface())
        {
            if(logger.isDebugEnabled()) logger.debug("Adding RsIterator for class ["+cld.getClassNameOfObject()+"] to ChainingIterator");


            chainingIter.addIterator(factory.createRsIterator(query, cld, this));
        }


        Iterator extents = getDescriptorRepository().getAllConcreteSubclassDescriptors(cld).iterator();
        while (extents.hasNext())
        {
            ClassDescriptor extCld = (ClassDescriptor) extents.next();


            // read same table only once
            if (chainingIter.containsIteratorForTable(extCld.getFullTableName()))
            {
                if(logger.isDebugEnabled()) logger.debug("Skipping class ["+extCld.getClassNameOfObject()+"]");
            }
            else
            {
                if(logger.isDebugEnabled()) logger.debug("Adding RsIterator of class ["+extCld.getClassNameOfObject()+"] to ChainingIterator");


                // add the iterator to the chaining iterator.
                chainingIter.addIterator(factory.createRsIterator(query, extCld, this));
            }
        }


        return chainingIter;
    }

View Full Code Here

            return factory.createRsIterator(query, cld, this);
        }


        if(logger.isDebugEnabled()) logger.debug("Creating ChainingIterator for class ["+cld.getClassNameOfObject()+"]");


        ChainingIterator chainingIter = new ChainingIterator();


        // BRJ: add base class iterator
        if (!cld.isInterface())
        {
            if(logger.isDebugEnabled()) logger.debug("Adding RsIterator for class ["+cld.getClassNameOfObject()+"] to ChainingIterator");


            chainingIter.addIterator(factory.createRsIterator(query, cld, this));
        }


        Iterator extents = getDescriptorRepository().getAllConcreteSubclassDescriptors(cld).iterator();
        while (extents.hasNext())
        {
            ClassDescriptor extCld = (ClassDescriptor) extents.next();


            // read same table only once
            if (chainingIter.containsIteratorForTable(extCld.getFullTableName()))
            {
                if(logger.isDebugEnabled()) logger.debug("Skipping class ["+extCld.getClassNameOfObject()+"]");
            }
            else
            {
                if(logger.isDebugEnabled()) logger.debug("Adding RsIterator of class ["+extCld.getClassNameOfObject()+"] to ChainingIterator");


                // add the iterator to the chaining iterator.
                chainingIter.addIterator(factory.createRsIterator(query, extCld, this));
            }
        }


        return chainingIter;
    }

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