org.openspaces.persistency.hibernate

Class CriteriaHibernateSpaceDataSourceConfigurer

java.lang.Object

org.openspaces.persistency.hibernate.CriteriaHibernateSpaceDataSourceConfigurer

public class CriteriaHibernateSpaceDataSourceConfigurer
extends Object

A configurer class which is used to configure a CriteriaHibernateSpaceDataSource

Since:

9.5

Author:

eitany

Field Summary

Fields

Modifier and Type	Field and Description
protected Log	logger

Constructor Summary

Constructors

Constructor and Description
CriteriaHibernateSpaceDataSourceConfigurer()

Method Summary

Modifier and Type	Method and Description
CriteriaHibernateSpaceDataSourceConfigurer	augmentInitialLoadEntries(boolean augmentInitialLoadEntries) Feature switch for initial load entries augmentation (creation of partition-specific query for entries).
CriteriaHibernateSpaceDataSourceConfigurer	clusterInfo(ClusterInfo clusterInfo) Injects the ClusterInfo to be used with the SpaceDataSource
CriteriaHibernateSpaceDataSource	create() Creates a DefaultHibernateExternalDataSource with the setup configuration.
CriteriaHibernateSpaceDataSourceConfigurer	fetchSize(int fetchSize) Sets the fetch size that will be used when working with scrollable results.
CriteriaHibernateSpaceDataSourceConfigurer	initialLoadChunkSize(int initalLoadChunkSize) By default, the initial load process will chunk large tables and will iterate over the table (entity) per chunk (concurrently).
CriteriaHibernateSpaceDataSourceConfigurer	initialLoadEntries(String... initialLoadEntries) Sets a list of entries that will be used to perform the #initialLoad() operation.
CriteriaHibernateSpaceDataSourceConfigurer	initialLoadQueryScanningBasePackages(String[] initialLoadQueryScanningBasePackages) optional.
CriteriaHibernateSpaceDataSourceConfigurer	initialLoadThreadPoolSize(int initialLoadThreadPoolSize) The initial load operation uses the ConcurrentMultiDataIterator.
CriteriaHibernateSpaceDataSourceConfigurer	managedEntries(String... entries) Sets all the entries this Hibernate data source will work with.
CriteriaHibernateSpaceDataSourceConfigurer	performOrderById(boolean performOrderById) When performing initial load, this flag indicates if the generated query will order to results by the id.
CriteriaHibernateSpaceDataSourceConfigurer	sessionFactory(org.hibernate.SessionFactory sessionFactory) Injects the Hibernate SessionFactory to be used with this data source.
CriteriaHibernateSpaceDataSourceConfigurer	useScrollableResultSet(boolean useScrollableResultSet) Controls if scrollable result sets will be used with initial load operation.

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected final Log logger

Constructor Detail

CriteriaHibernateSpaceDataSourceConfigurer

public CriteriaHibernateSpaceDataSourceConfigurer()

Method Detail

sessionFactory

public CriteriaHibernateSpaceDataSourceConfigurer sessionFactory(org.hibernate.SessionFactory sessionFactory)

Injects the Hibernate SessionFactory to be used with this data source.

managedEntries

public CriteriaHibernateSpaceDataSourceConfigurer managedEntries(String... entries)

Sets all the entries this Hibernate data source will work with. By default, will use Hibernate meta data API in order to get the list of all the given entities it handles.

This list is used to filter out entities when performing all data source operations exception for the #initialLoad() operation.

Usually, there is no need to explicitly set this.

fetchSize

public CriteriaHibernateSpaceDataSourceConfigurer fetchSize(int fetchSize)

Sets the fetch size that will be used when working with scrollable results. Defaults to 100.

See Also:

Criteria.setFetchSize(int)

performOrderById

public CriteriaHibernateSpaceDataSourceConfigurer performOrderById(boolean performOrderById)

When performing initial load, this flag indicates if the generated query will order to results by the id. By default set to true as it most times results in better initial load performance.

initialLoadEntries

public CriteriaHibernateSpaceDataSourceConfigurer initialLoadEntries(String... initialLoadEntries)

Sets a list of entries that will be used to perform the #initialLoad() operation. By default, will try and build a sensible list based on Hibernate meta data.

Note, sometimes an explicit list should be provided. For example, if we have a class A and class B, and A has a relationship to B which is not component. If in the space, we only wish to have A, and have B just as a field in A (and not as an Entry), then we need to explicitly set the list just to A. By default, if we won't set it, it will result in two entries existing in the Space, A and B, with A having a field of B as well.

initialLoadThreadPoolSize

public CriteriaHibernateSpaceDataSourceConfigurer initialLoadThreadPoolSize(int initialLoadThreadPoolSize)

The initial load operation uses the ConcurrentMultiDataIterator. This property allows to control the thread pool size of the concurrent multi data iterator. Defaults to 10.

Note, this usually will map one to one to the number of open connections / cursors against the database.

initialLoadChunkSize

public CriteriaHibernateSpaceDataSourceConfigurer initialLoadChunkSize(int initalLoadChunkSize)

By default, the initial load process will chunk large tables and will iterate over the table (entity) per chunk (concurrently). This setting allows to control the chunk size to split the table by. By default, set to 100,000. Batching can be disabled by setting -1.

useScrollableResultSet

public CriteriaHibernateSpaceDataSourceConfigurer useScrollableResultSet(boolean useScrollableResultSet)

Controls if scrollable result sets will be used with initial load operation. Defaults to true.

initialLoadQueryScanningBasePackages

public CriteriaHibernateSpaceDataSourceConfigurer initialLoadQueryScanningBasePackages(String[] initialLoadQueryScanningBasePackages)

optional.

Parameters:

initialLoadQueryScanningBasePackages - array of base packages to scan for custom initial load query methods marked with the SpaceInitialLoadQuery annotation (default: null, scans nothing).

Returns:

this instance.

clusterInfo

public CriteriaHibernateSpaceDataSourceConfigurer clusterInfo(ClusterInfo clusterInfo)

Injects the ClusterInfo to be used with the SpaceDataSource

augmentInitialLoadEntries

public CriteriaHibernateSpaceDataSourceConfigurer augmentInitialLoadEntries(boolean augmentInitialLoadEntries)

Feature switch for initial load entries augmentation (creation of partition-specific query for entries). Defaults to true.

create

public CriteriaHibernateSpaceDataSource create()

Creates a DefaultHibernateExternalDataSource with the setup configuration.