org.openspaces.persistency.hibernate.iterator
Class StatelessChunkScrollableDataIterator

java.lang.Object
  org.openspaces.persistency.hibernate.iterator.AbstractChunkScrollableDataIterator
      org.openspaces.persistency.hibernate.iterator.StatelessChunkScrollableDataIterator

All Implemented Interfaces:

com.gigaspaces.datasource.DataIterator, Iterator, MultiDataIterator

public class StatelessChunkScrollableDataIterator
extends AbstractChunkScrollableDataIterator

A stateless batch iterator that is based on StatelessScrollableDataIterator for each chunk.

Author:

kimchy

Field Summary

Fields inherited from class org.openspaces.persistency.hibernate.iterator.AbstractChunkScrollableDataIterator

chunkSize, entityName, fetchSize, hQuery, perfromOrderById, sessionFactory, sqlQuery

Constructor Summary

StatelessChunkScrollableDataIterator(com.j_spaces.core.client.SQLQuery sqlQuery, org.hibernate.SessionFactory sessionFactory, int fetchSize, boolean performOrderById, int chunkSize)
Constructs a scrollable iterator over the given GigaSpaces SQLQuery.

StatelessChunkScrollableDataIterator(String entityName, org.hibernate.SessionFactory sessionFactory, int fetchSize, boolean performOrderById, int chunkSize)
Constructs a scrollable iterator over the given entity name.

StatelessChunkScrollableDataIterator(String hQuery, org.hibernate.SessionFactory sessionFactory, int fetchSize, int chunkSize)
Constructs a scrollable iterator over the given hibernate query string.

Method Summary

protected com.gigaspaces.datasource.DataIterator	createScrollableIteartorByEntityName(String entityName, org.hibernate.SessionFactory sessionFactory, int fetchSize, boolean performOrderById, int from, int size)
protected com.gigaspaces.datasource.DataIterator	createScrollableIteartorByHibernateQuery(String hQuery, org.hibernate.SessionFactory sessionFactory, int fetchSize, int from, int size)
protected com.gigaspaces.datasource.DataIterator	createScrollableIteartorBySQLQuery(com.j_spaces.core.client.SQLQuery sqlQuery, org.hibernate.SessionFactory sessionFactory, int fetchSize, boolean performOrderById, int from, int size)

Methods inherited from class org.openspaces.persistency.hibernate.iterator.AbstractChunkScrollableDataIterator

close, hasNext, iterators, next, remove

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

StatelessChunkScrollableDataIterator

public StatelessChunkScrollableDataIterator(String entityName,
                                            org.hibernate.SessionFactory sessionFactory,
                                            int fetchSize,
                                            boolean performOrderById,
                                            int chunkSize)

Constructs a scrollable iterator over the given entity name.

Parameters:

entityName - The entity name to scroll over

sessionFactory - The session factory to use to construct the session

fetchSize - The fetch size of the scrollabale result set

performOrderById - Should the query perform order by id or not

chunkSize - The size of the chunks the entity table will be broken to

StatelessChunkScrollableDataIterator

public StatelessChunkScrollableDataIterator(com.j_spaces.core.client.SQLQuery sqlQuery,
                                            org.hibernate.SessionFactory sessionFactory,
                                            int fetchSize,
                                            boolean performOrderById,
                                            int chunkSize)

Constructs a scrollable iterator over the given GigaSpaces SQLQuery.

Parameters:

sqlQuery - The SQLQuery to scroll over

sessionFactory - The session factory to use to construct the session

fetchSize - The fetch size of the scrollabale result set

performOrderById - Should the query perform order by id or not

chunkSize - The size of the chunks the entity table will be broken to

StatelessChunkScrollableDataIterator

public StatelessChunkScrollableDataIterator(String hQuery,
                                            org.hibernate.SessionFactory sessionFactory,
                                            int fetchSize,
                                            int chunkSize)

Constructs a scrollable iterator over the given hibernate query string.

Parameters:

hQuery - The hiberante query string to scroll over

sessionFactory - The session factory to use to construct the session

fetchSize - The fetch size of the scrollabale result set

chunkSize - The size of the chunks the entity table will be broken to

Method Detail

createScrollableIteartorByEntityName

protected com.gigaspaces.datasource.DataIterator createScrollableIteartorByEntityName(String entityName,
                                                                                      org.hibernate.SessionFactory sessionFactory,
                                                                                      int fetchSize,
                                                                                      boolean performOrderById,
                                                                                      int from,
                                                                                      int size)

Specified by:

createScrollableIteartorByEntityName in class AbstractChunkScrollableDataIterator

createScrollableIteartorBySQLQuery

protected com.gigaspaces.datasource.DataIterator createScrollableIteartorBySQLQuery(com.j_spaces.core.client.SQLQuery sqlQuery,
                                                                                    org.hibernate.SessionFactory sessionFactory,
                                                                                    int fetchSize,
                                                                                    boolean performOrderById,
                                                                                    int from,
                                                                                    int size)

Specified by:

createScrollableIteartorBySQLQuery in class AbstractChunkScrollableDataIterator

createScrollableIteartorByHibernateQuery

protected com.gigaspaces.datasource.DataIterator createScrollableIteartorByHibernateQuery(String hQuery,
                                                                                          org.hibernate.SessionFactory sessionFactory,
                                                                                          int fetchSize,
                                                                                          int from,
                                                                                          int size)

Specified by:

createScrollableIteartorByHibernateQuery in class AbstractChunkScrollableDataIterator