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org.springframework.orm.hibernate3
Class HibernateTemplate

java.lang.Object
  extended by org.springframework.orm.hibernate3.HibernateAccessor
      extended by org.springframework.orm.hibernate3.HibernateTemplate
All Implemented Interfaces:
BeanFactoryAware, InitializingBean, HibernateOperations
public class HibernateTemplate
extends HibernateAccessor
implements HibernateOperations

Helper class that simplifies Hibernate data access code. Automatically converts HibernateExceptions into DataAccessExceptions, following the org.springframework.dao exception hierarchy.

NOTE: As of Hibernate 3.0.1, transactional Hibernate access code can also be coded in plain Hibernate style. Hence, for newly started projects, consider adopting the standard Hibernate3 style of coding data access objects instead, based on SessionFactory.getCurrentSession(). (Spring's LocalSessionFactoryBean automatically supports Spring transaction management for the Hibernate3 getCurrentSession() method.)

The central method is execute, supporting Hibernate access code implementing the HibernateCallback interface. It provides Hibernate Session handling such that neither the HibernateCallback implementation nor the calling code needs to explicitly care about retrieving/closing Hibernate Sessions, or handling Session lifecycle exceptions. For typical single step actions, there are various convenience methods (find, load, saveOrUpdate, delete).

Can be used within a service implementation via direct instantiation with a SessionFactory reference, or get prepared in an application context and given to services as bean reference. Note: The SessionFactory should always be configured as bean in the application context, in the first case given to the service directly, in the second case to the prepared template.

This class can be considered as direct alternative to working with the raw Hibernate3 Session API (through SessionFactory.getCurrentSession()). The major advantage is its automatic conversion to DataAccessExceptions, the major disadvantage that no checked application exceptions can get thrown from within data access code. Corresponding checks and the actual throwing of such exceptions can often be deferred to after callback execution, though.

Note that even if HibernateTransactionManager is used for transaction demarcation in higher-level services, all those services above the data access layer don't need to be Hibernate-aware. Setting such a special PlatformTransactionManager is a configuration issue: For example, switching to JTA is just a matter of Spring configuration (use JtaTransactionManager instead) that does not affect application code.

LocalSessionFactoryBean is the preferred way of obtaining a reference to a specific Hibernate SessionFactory, at least in a non-EJB environment. The Spring application context will manage its lifecycle, initializing and shutting down the factory as part of the application.

Note that operations that return an Iterator (i.e. iterate) are supposed to be used within Spring-driven or JTA-driven transactions (with HibernateTransactionManager, JtaTransactionManager, or EJB CMT). Else, the Iterator won't be able to read results from its ResultSet anymore, as the underlying Hibernate Session will already have been closed.

Lazy loading will also just work with an open Hibernate Session, either within a transaction or within OpenSessionInViewFilter/Interceptor. Furthermore, some operations just make sense within transactions, for example: contains, evict, lock, flush, clear.

Since:
1.2
Author:
Juergen Hoeller
See Also:
SessionFactory.getCurrentSession(), HibernateAccessor.setSessionFactory(org.hibernate.SessionFactory), HibernateCallback, Session, LocalSessionFactoryBean, HibernateTransactionManager, JtaTransactionManager, OpenSessionInViewFilter, OpenSessionInViewInterceptor

Field Summary
 
Fields inherited from class org.springframework.orm.hibernate3.HibernateAccessor
FLUSH_ALWAYS, FLUSH_AUTO, FLUSH_COMMIT, FLUSH_EAGER, FLUSH_NEVER, logger
 
Constructor Summary
HibernateTemplate()
          Create a new HibernateTemplate instance.
HibernateTemplate(SessionFactory sessionFactory)
          Create a new HibernateTemplate instance.
HibernateTemplate(SessionFactory sessionFactory, boolean allowCreate)
          Create a new HibernateTemplate instance.
 
Method Summary
protected  void applyNamedParameterToQuery(Query queryObject, String paramName, Object value)
          Apply the given name parameter to the given Query object.
 int bulkUpdate(String queryString)
          Update/delete all objects according to the given query.
 int bulkUpdate(String queryString, Object value)
          Update/delete all objects according to the given query, binding one value to a "?"
 int bulkUpdate(String queryString, Object[] values)
          Update/delete all objects according to the given query, binding a number of values to "?"
protected  void checkWriteOperationAllowed(Session session)
          Check whether write operations are allowed on the given Session.
 void clear()
          Remove all objects from the Session cache, and cancel all pending saves, updates and deletes.
 void closeIterator(Iterator it)
          Close an Iterator created by iterate operations immediately, instead of waiting until the session is closed or disconnected.
 boolean contains(Object entity)
          Check whether the given object is in the Session cache.
protected  Session createSessionProxy(Session session)
          Create a close-suppressing proxy for the given Hibernate Session.
 void delete(Object entity)
          Delete the given persistent instance.
 void delete(Object entity, LockMode lockMode)
          Delete the given persistent instance.
 void deleteAll(Collection entities)
          Delete all given persistent instances.
 Filter enableFilter(String filterName)
          Return an enabled Hibernate Filter for the given filter name.
 void evict(Object entity)
          Remove the given object from the Session cache.
 Object execute(HibernateCallback action)
          Execute the action specified by the given action object within a Session.
 Object execute(HibernateCallback action, boolean exposeNativeSession)
          Execute the action specified by the given action object within a Session.
 List executeFind(HibernateCallback action)
          Execute the specified action assuming that the result object is a List.
 List find(String queryString)
          Execute a query for persistent instances.
 List find(String queryString, Object value)
          Execute a query for persistent instances, binding one value to a "?"
 List find(String queryString, Object[] values)
          Execute a query for persistent instances, binding a number of values to "?"
 List findByCriteria(DetachedCriteria criteria)
          Execute a query based on a given Hibernate criteria object.
 List findByCriteria(DetachedCriteria criteria, int firstResult, int maxResults)
          Execute a query based on a given Hibernate criteria object.
 List findByExample(Object exampleEntity)
          Execute a query based on a given example entity object.
 List findByExample(Object exampleEntity, int firstResult, int maxResults)
          Execute a query based on a given example entity object.
 List findByNamedParam(String queryString, String[] paramNames, Object[] values)
          Execute a query for persistent instances, binding a number of values to ":" named parameters in the query string.
 List findByNamedParam(String queryString, String paramName, Object value)
          Execute a query for persistent instances, binding one value to a ":" named parameter in the query string.
 List findByNamedQuery(String queryName)
          Execute a named query for persistent instances.
 List findByNamedQuery(String queryName, Object value)
          Execute a named query for persistent instances, binding one value to a "?"
 List findByNamedQuery(String queryName, Object[] values)
          Execute a named query for persistent instances, binding a number of values to "?"
 List findByNamedQueryAndNamedParam(String queryName, String[] paramNames, Object[] values)
          Execute a named query for persistent instances, binding a number of values to ":" named parameters in the query string.
 List findByNamedQueryAndNamedParam(String queryName, String paramName, Object value)
          Execute a named query for persistent instances, binding one value to a ":" named parameter in the query string.
 List findByNamedQueryAndValueBean(String queryName, Object valueBean)
          Execute a named query for persistent instances, binding the properties of the given bean to ":" named parameters in the query string.
 List findByValueBean(String queryString, Object valueBean)
          Execute a query for persistent instances, binding the properties of the given bean to named parameters in the query string.
 void flush()
          Flush all pending saves, updates and deletes to the database.
 Object get(Class entityClass, Serializable id)
          Return the persistent instance of the given entity class with the given identifier, or null if not found.
 Object get(Class entityClass, Serializable id, LockMode lockMode)
          Return the persistent instance of the given entity class with the given identifier, or null if not found.
 Object get(String entityName, Serializable id)
          Return the persistent instance of the given entity class with the given identifier, or null if not found.
 Object get(String entityName, Serializable id, LockMode lockMode)
          Return the persistent instance of the given entity class with the given identifier, or null if not found.
 int getFetchSize()
          Return the fetch size specified for this HibernateTemplate.
 int getMaxResults()
          Return the maximum number of rows specified for this HibernateTemplate.
 String getQueryCacheRegion()
          Return the name of the cache region for queries executed by this template.
protected  Session getSession()
          Return a Session for use by this template.
 void initialize(Object proxy)
          Force initialization of a Hibernate proxy or persistent collection.
 boolean isAllowCreate()
          Return if a new Session should be created if no thread-bound found.
 boolean isAlwaysUseNewSession()
          Return whether to always use a new Hibernate Session for this template.
 boolean isCacheQueries()
          Return whether to cache all queries executed by this template.
 boolean isCheckWriteOperations()
          Return whether to check that the Hibernate Session is not in read-only mode in case of write operations (save/update/delete).
 boolean isExposeNativeSession()
          Return whether to expose the native Hibernate Session to HibernateCallback code, or rather a Session proxy.
 Iterator iterate(String queryString)
          Execute a query for persistent instances.
 Iterator iterate(String queryString, Object value)
          Execute a query for persistent instances, binding one value to a "?"
 Iterator iterate(String queryString, Object[] values)
          Execute a query for persistent instances, binding a number of values to "?"
 Object load(Class entityClass, Serializable id)
          Return the persistent instance of the given entity class with the given identifier, throwing an exception if not found.
 Object load(Class entityClass, Serializable id, LockMode lockMode)
          Return the persistent instance of the given entity class with the given identifier, throwing an exception if not found.
 void load(Object entity, Serializable id)
          Load the persistent instance with the given identifier into the given object, throwing an exception if not found.
 Object load(String entityName, Serializable id)
          Return the persistent instance of the given entity class with the given identifier, throwing an exception if not found.
 Object load(String entityName, Serializable id, LockMode lockMode)
          Return the persistent instance of the given entity class with the given identifier, throwing an exception if not found.
 List loadAll(Class entityClass)
          Return all persistent instances of the given entity class.
 void lock(Object entity, LockMode lockMode)
          Obtain the specified lock level upon the given object, implicitly checking whether the corresponding database entry still exists (throwing an OptimisticLockingFailureException if not found).
 void lock(String entityName, Object entity, LockMode lockMode)
          Obtain the specified lock level upon the given object, implicitly checking whether the corresponding database entry still exists (throwing an OptimisticLockingFailureException if not found).
 Object merge(Object entity)
          Copy the state of the given object onto the persistent object with the same identifier.
 Object merge(String entityName, Object entity)
          Copy the state of the given object onto the persistent object with the same identifier.
 void persist(Object entity)
          Persist the given transient instance.
 void persist(String entityName, Object entity)
          Persist the given transient instance.
protected  void prepareCriteria(Criteria criteria)
          Prepare the given Criteria object, applying cache settings and/or a transaction timeout.
protected  void prepareQuery(Query queryObject)
          Prepare the given Query object, applying cache settings and/or a transaction timeout.
 void refresh(Object entity)
          Re-read the state of the given persistent instance.
 void refresh(Object entity, LockMode lockMode)
          Re-read the state of the given persistent instance.
 void replicate(Object entity, ReplicationMode replicationMode)
          Persist the state of the given detached instance according to the given replication mode, reusing the current identifier value.
 void replicate(String entityName, Object entity, ReplicationMode replicationMode)
          Persist the state of the given detached instance according to the given replication mode, reusing the current identifier value.
 Serializable save(Object entity)
          Persist the given transient instance.
 void save(Object entity, Serializable id)
          Persist the given transient instance with the given identifier.
 Serializable save(String entityName, Object entity)
          Persist the given transient instance.
 void save(String entityName, Object entity, Serializable id)
          Persist the given transient instance with the given identifier.
 void saveOrUpdate(Object entity)
          Save or update the given persistent instance, according to its id (matching the configured "unsaved-value"?).
 void saveOrUpdate(String entityName, Object entity)
          Save or update the given persistent instance, according to its id (matching the configured "unsaved-value"?).
 void saveOrUpdateAll(Collection entities)
          Save or update all given persistent instances, according to its id (matching the configured "unsaved-value"?).
 void setAllowCreate(boolean allowCreate)
          Set if a new Session should be created when no transactional Session can be found for the current thread.
 void setAlwaysUseNewSession(boolean alwaysUseNewSession)
          Set whether to always use a new Hibernate Session for this template.
 void setCacheQueries(boolean cacheQueries)
          Set whether to cache all queries executed by this template.
 void setCheckWriteOperations(boolean checkWriteOperations)
          Set whether to check that the Hibernate Session is not in read-only mode in case of write operations (save/update/delete).
 void setExposeNativeSession(boolean exposeNativeSession)
          Set whether to expose the native Hibernate Session to HibernateCallback code.
 void setFetchSize(int fetchSize)
          Set the fetch size for this HibernateTemplate.
 void setMaxResults(int maxResults)
          Set the maximum number of rows for this HibernateTemplate.
 void setQueryCacheRegion(String queryCacheRegion)
          Set the name of the cache region for queries executed by this template.
 void update(Object entity)
          Update the given persistent instance, associating it with the current Hibernate Session.
 void update(Object entity, LockMode lockMode)
          Update the given persistent instance, associating it with the current Hibernate Session.
 void update(String entityName, Object entity)
          Update the given persistent instance, associating it with the current Hibernate Session.
 void update(String entityName, Object entity, LockMode lockMode)
          Update the given persistent instance, associating it with the current Hibernate Session.
 
Methods inherited from class org.springframework.orm.hibernate3.HibernateAccessor
afterPropertiesSet, applyFlushMode, convertHibernateAccessException, convertJdbcAccessException, convertJdbcAccessException, disableFilters, enableFilters, flushIfNecessary, getEntityInterceptor, getFilterNames, getFlushMode, getJdbcExceptionTranslator, getSessionFactory, setBeanFactory, setEntityInterceptor, setEntityInterceptorBeanName, setFilterName, setFilterNames, setFlushMode, setFlushModeName, setJdbcExceptionTranslator, setSessionFactory
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

HibernateTemplate

public HibernateTemplate()
Create a new HibernateTemplate instance.

HibernateTemplate

public HibernateTemplate(SessionFactory sessionFactory)
Create a new HibernateTemplate instance.

Parameters:
sessionFactory - SessionFactory to create Sessions

HibernateTemplate

public HibernateTemplate(SessionFactory sessionFactory,
                         boolean allowCreate)
Create a new HibernateTemplate instance.

Parameters:
sessionFactory - SessionFactory to create Sessions
allowCreate - if a non-transactional Session should be created when no transactional Session can be found for the current thread
Method Detail

setAllowCreate

public void setAllowCreate(boolean allowCreate)
Set if a new Session should be created when no transactional Session can be found for the current thread.

HibernateTemplate is aware of a corresponding Session bound to the current thread, for example when using HibernateTransactionManager. If allowCreate is true, a new non-transactional Session will be created if none found, which needs to be closed at the end of the operation. If false, an IllegalStateException will get thrown in this case.

See Also:
SessionFactoryUtils.getSession(SessionFactory, boolean)

isAllowCreate

public boolean isAllowCreate()
Return if a new Session should be created if no thread-bound found.

setAlwaysUseNewSession

public void setAlwaysUseNewSession(boolean alwaysUseNewSession)
Set whether to always use a new Hibernate Session for this template. Default is "false"; if activated, all operations on this template will work on a new Hibernate Session even in case of a pre-bound Session (for example, within a transaction or OpenSessionInViewFilter).

Within a transaction, a new Hibernate Session used by this template will participate in the transaction through using the same JDBC Connection. In such a scenario, multiple Sessions will participate in the same database transaction.

Turn this on for operations that are supposed to always execute independently, without side effects caused by a shared Hibernate Session.

isAlwaysUseNewSession

public boolean isAlwaysUseNewSession()
Return whether to always use a new Hibernate Session for this template.

setExposeNativeSession

public void setExposeNativeSession(boolean exposeNativeSession)
Set whether to expose the native Hibernate Session to HibernateCallback code. Default is "false": a Session proxy will be returned, suppressing close calls and automatically applying query cache settings and transaction timeouts.

See Also:
HibernateCallback, Session, setCacheQueries(boolean), setQueryCacheRegion(java.lang.String), prepareQuery(org.hibernate.Query), prepareCriteria(org.hibernate.Criteria)

isExposeNativeSession

public boolean isExposeNativeSession()
Return whether to expose the native Hibernate Session to HibernateCallback code, or rather a Session proxy.

setCheckWriteOperations

public void setCheckWriteOperations(boolean checkWriteOperations)
Set whether to check that the Hibernate Session is not in read-only mode in case of write operations (save/update/delete).

Default is "true", for fail-fast behavior when attempting write operations within a read-only transaction. Turn this off to allow save/update/delete on a Session with flush mode NEVER.

See Also:
HibernateAccessor.setFlushMode(int), checkWriteOperationAllowed(org.hibernate.Session), TransactionDefinition.isReadOnly()

isCheckWriteOperations

public boolean isCheckWriteOperations()
Return whether to check that the Hibernate Session is not in read-only mode in case of write operations (save/update/delete).

setCacheQueries

public void setCacheQueries(boolean cacheQueries)
Set whether to cache all queries executed by this template. If this is true, all Query and Criteria objects created by this template will be marked as cacheable (including all queries through find methods).

To specify the query region to be used for queries cached by this template, set the "queryCacheRegion" property.

See Also:
setQueryCacheRegion(java.lang.String), Query.setCacheable(boolean), Criteria.setCacheable(boolean)

isCacheQueries

public boolean isCacheQueries()
Return whether to cache all queries executed by this template.

setQueryCacheRegion

public void setQueryCacheRegion(String queryCacheRegion)
Set the name of the cache region for queries executed by this template. If this is specified, it will be applied to all Query and Criteria objects created by this template (including all queries through find methods).

The cache region will not take effect unless queries created by this template are configured to be cached via the "cacheQueries" property.

See Also:
setCacheQueries(boolean), Query.setCacheRegion(java.lang.String), Criteria.setCacheRegion(java.lang.String)

getQueryCacheRegion

public String getQueryCacheRegion()
Return the name of the cache region for queries executed by this template.

setFetchSize

public void setFetchSize(int fetchSize)
Set the fetch size for this HibernateTemplate. This is important for processing large result sets: Setting this higher than the default value will increase processing speed at the cost of memory consumption; setting this lower can avoid transferring row data that will never be read by the application.

Default is 0, indicating to use the JDBC driver's default.

getFetchSize

public int getFetchSize()
Return the fetch size specified for this HibernateTemplate.

setMaxResults

public void setMaxResults(int maxResults)
Set the maximum number of rows for this HibernateTemplate. This is important for processing subsets of large result sets, avoiding to read and hold the entire result set in the database or in the JDBC driver if we're never interested in the entire result in the first place (for example, when performing searches that might return a large number of matches).

Default is 0, indicating to use the JDBC driver's default.

getMaxResults

public int getMaxResults()
Return the maximum number of rows specified for this HibernateTemplate.

execute

public Object execute(HibernateCallback action)
               throws DataAccessException
Description copied from interface: HibernateOperations
Execute the action specified by the given action object within a Session. Application exceptions thrown by the action object get propagated to the caller (can only be unchecked). Hibernate exceptions are transformed into appropriate DAO ones. Allows for returning a result object, i.e. a domain object or a collection of domain objects.

Note: Callback code is not supposed to handle transactions itself! Use an appropriate transaction manager like HibernateTransactionManager. Generally, callback code must not touch any Session lifecycle methods, like close, disconnect, or reconnect, to let the template do its work.

Specified by:
execute in interface HibernateOperations
Parameters:
action - callback object that specifies the Hibernate action
Returns:
a result object returned by the action, or null
Throws:
DataAccessException - in case of Hibernate errors
See Also:
HibernateTransactionManager, org.springframework.dao, org.springframework.transaction, Session

executeFind

public List executeFind(HibernateCallback action)
                 throws DataAccessException
Description copied from interface: HibernateOperations
Execute the specified action assuming that the result object is a List. This is a convenience method for executing Hibernate find calls or queries within an action.

Specified by:
executeFind in interface HibernateOperations
Parameters:
action - calback object that specifies the Hibernate action
Returns:
a List result returned by the action, or null
Throws:
DataAccessException - in case of Hibernate errors

execute

public Object execute(HibernateCallback action,
                      boolean exposeNativeSession)
               throws DataAccessException
Execute the action specified by the given action object within a Session.

Parameters:
action - callback object that specifies the Hibernate action
exposeNativeSession - whether to expose the native Hibernate Session to callback code
Returns:
a result object returned by the action, or null
Throws:
DataAccessException - in case of Hibernate errors

getSession

protected Session getSession()
Return a Session for use by this template.

Returns a new Session in case of "alwaysUseNewSession" (using the same JDBC Connection as a transactional Session, if applicable), a pre-bound Session in case of "allowCreate" turned off, and a pre-bound or new Session else (new only if no transactional or otherwise pre-bound Session exists).

See Also:
SessionFactoryUtils.getSession(org.hibernate.SessionFactory, boolean), SessionFactoryUtils.getNewSession(org.hibernate.SessionFactory), setAlwaysUseNewSession(boolean), setAllowCreate(boolean)

createSessionProxy

protected Session createSessionProxy(Session session)
Create a close-suppressing proxy for the given Hibernate Session. The proxy also prepares returned Query and Criteria objects.

Parameters:
session - the Hibernate Session to create a proxy for
Returns:
the Session proxy
See Also:
Session.close(), prepareQuery(org.hibernate.Query), prepareCriteria(org.hibernate.Criteria)

get

public Object get(Class entityClass,
                  Serializable id)
           throws DataAccessException
Description copied from interface: HibernateOperations
Return the persistent instance of the given entity class with the given identifier, or null if not found.

Specified by:
get in interface HibernateOperations
Parameters:
entityClass - a persistent class
id - an identifier of the persistent instance
Returns:
the persistent instance, or null if not found
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.get(Class, java.io.Serializable)

get

public Object get(Class entityClass,
                  Serializable id,
                  LockMode lockMode)
           throws DataAccessException
Description copied from interface: HibernateOperations
Return the persistent instance of the given entity class with the given identifier, or null if not found. Obtains the specified lock mode if the instance exists.

Specified by:
get in interface HibernateOperations
Parameters:
entityClass - a persistent class
id - an identifier of the persistent instance
lockMode - the lock mode to obtain
Returns:
the persistent instance, or null if not found
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.get(Class, java.io.Serializable, org.hibernate.LockMode)

get

public Object get(String entityName,
                  Serializable id)
           throws DataAccessException
Description copied from interface: HibernateOperations
Return the persistent instance of the given entity class with the given identifier, or null if not found.

Specified by:
get in interface HibernateOperations
Parameters:
entityName - the name of a persistent entity
id - an identifier of the persistent instance
Returns:
the persistent instance, or null if not found
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.get(Class, java.io.Serializable)

get

public Object get(String entityName,
                  Serializable id,
                  LockMode lockMode)
           throws DataAccessException
Description copied from interface: HibernateOperations
Return the persistent instance of the given entity class with the given identifier, or null if not found. Obtains the specified lock mode if the instance exists.

Specified by:
get in interface HibernateOperations
Parameters:
entityName - the name of a persistent entity
id - an identifier of the persistent instance
lockMode - the lock mode to obtain
Returns:
the persistent instance, or null if not found
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.get(Class, java.io.Serializable, org.hibernate.LockMode)

load

public Object load(Class entityClass,
                   Serializable id)
            throws DataAccessException
Description copied from interface: HibernateOperations
Return the persistent instance of the given entity class with the given identifier, throwing an exception if not found.

Specified by:
load in interface HibernateOperations
Parameters:
entityClass - a persistent class
id - an identifier of the persistent instance
Returns:
the persistent instance
Throws:
ObjectRetrievalFailureException - if not found
DataAccessException - in case of Hibernate errors
See Also:
Session.load(Class, java.io.Serializable)

load

public Object load(Class entityClass,
                   Serializable id,
                   LockMode lockMode)
            throws DataAccessException
Description copied from interface: HibernateOperations
Return the persistent instance of the given entity class with the given identifier, throwing an exception if not found. Obtains the specified lock mode if the instance exists.

Specified by:
load in interface HibernateOperations
Parameters:
entityClass - a persistent class
id - an identifier of the persistent instance
lockMode - the lock mode to obtain
Returns:
the persistent instance
Throws:
ObjectRetrievalFailureException - if not found
DataAccessException - in case of Hibernate errors
See Also:
Session.load(Class, java.io.Serializable)

load

public Object load(String entityName,
                   Serializable id)
            throws DataAccessException
Description copied from interface: HibernateOperations
Return the persistent instance of the given entity class with the given identifier, throwing an exception if not found.

Specified by:
load in interface HibernateOperations
Parameters:
entityName - the name of a persistent entity
id - an identifier of the persistent instance
Returns:
the persistent instance
Throws:
ObjectRetrievalFailureException - if not found
DataAccessException - in case of Hibernate errors
See Also:
Session.load(Class, java.io.Serializable)

load

public Object load(String entityName,
                   Serializable id,
                   LockMode lockMode)
            throws DataAccessException
Description copied from interface: HibernateOperations
Return the persistent instance of the given entity class with the given identifier, throwing an exception if not found. Obtains the specified lock mode if the instance exists.

Specified by:
load in interface HibernateOperations
Parameters:
entityName - the name of a persistent entity
id - an identifier of the persistent instance
lockMode - the lock mode to obtain
Returns:
the persistent instance
Throws:
ObjectRetrievalFailureException - if not found
DataAccessException - in case of Hibernate errors
See Also:
Session.load(Class, java.io.Serializable)

loadAll

public List loadAll(Class entityClass)
             throws DataAccessException
Description copied from interface: HibernateOperations
Return all persistent instances of the given entity class. Note: Use queries or criteria for retrieving a specific subset.

Specified by:
loadAll in interface HibernateOperations
Parameters:
entityClass - a persistent class
Returns:
a List containing 0 or more persistent instances
Throws:
DataAccessException - if there is a Hibernate error
See Also:
Session.createCriteria(java.lang.Class)

load

public void load(Object entity,
                 Serializable id)
          throws DataAccessException
Description copied from interface: HibernateOperations
Load the persistent instance with the given identifier into the given object, throwing an exception if not found.

Specified by:
load in interface HibernateOperations
Parameters:
entity - the object (of the target class) to load into
id - an identifier of the persistent instance
Throws:
ObjectRetrievalFailureException - if not found
DataAccessException - in case of Hibernate errors
See Also:
Session.load(Object, java.io.Serializable)

refresh

public void refresh(Object entity)
             throws DataAccessException
Description copied from interface: HibernateOperations
Re-read the state of the given persistent instance.

Specified by:
refresh in interface HibernateOperations
Parameters:
entity - the persistent instance to re-read
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.refresh(Object)

refresh

public void refresh(Object entity,
                    LockMode lockMode)
             throws DataAccessException
Description copied from interface: HibernateOperations
Re-read the state of the given persistent instance. Obtains the specified lock mode for the instance.

Specified by:
refresh in interface HibernateOperations
Parameters:
entity - the persistent instance to re-read
lockMode - the lock mode to obtain
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.refresh(Object, org.hibernate.LockMode)

contains

public boolean contains(Object entity)
                 throws DataAccessException
Description copied from interface: HibernateOperations
Check whether the given object is in the Session cache.

Specified by:
contains in interface HibernateOperations
Parameters:
entity - the persistence instance to check
Returns:
whether the given object is in the Session cache
Throws:
DataAccessException - if there is a Hibernate error
See Also:
Session.contains(java.lang.Object)

evict

public void evict(Object entity)
           throws DataAccessException
Description copied from interface: HibernateOperations
Remove the given object from the Session cache.

Specified by:
evict in interface HibernateOperations
Parameters:
entity - the persistent instance to evict
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.evict(java.lang.Object)

initialize

public void initialize(Object proxy)
                throws DataAccessException
Description copied from interface: HibernateOperations
Force initialization of a Hibernate proxy or persistent collection.

Specified by:
initialize in interface HibernateOperations
Parameters:
proxy - a proxy for a persistent object or a persistent collection
Throws:
DataAccessException - if we can't initialize the proxy, for example because it is not associated with an active Session
See Also:
Hibernate.initialize(java.lang.Object)

enableFilter

public Filter enableFilter(String filterName)
                    throws IllegalStateException
Description copied from interface: HibernateOperations
Return an enabled Hibernate Filter for the given filter name. The returned Filter instance can be used to set filter parameters.

Specified by:
enableFilter in interface HibernateOperations
Parameters:
filterName - the name of the filter
Returns:
the enabled Hibernate Filter (either already enabled or enabled on the fly by this operation)
Throws:
IllegalStateException - if we are not running within a transactional Session (in which case this operation does not make sense)

lock

public void lock(Object entity,
                 LockMode lockMode)
          throws DataAccessException
Description copied from interface: HibernateOperations
Obtain the specified lock level upon the given object, implicitly checking whether the corresponding database entry still exists (throwing an OptimisticLockingFailureException if not found).

Specified by:
lock in interface HibernateOperations
Parameters:
entity - the persistent instance to lock
lockMode - the lock mode to obtain
Throws:
ObjectOptimisticLockingFailureException - if not found
DataAccessException - in case of Hibernate errors
See Also:
Session.lock(Object, org.hibernate.LockMode)

lock

public void lock(String entityName,
                 Object entity,
                 LockMode lockMode)
          throws DataAccessException
Description copied from interface: HibernateOperations
Obtain the specified lock level upon the given object, implicitly checking whether the corresponding database entry still exists (throwing an OptimisticLockingFailureException if not found).

Specified by:
lock in interface HibernateOperations
Parameters:
entityName - the name of a persistent entity
entity - the persistent instance to lock
lockMode - the lock mode to obtain
Throws:
ObjectOptimisticLockingFailureException - if not found
DataAccessException - in case of Hibernate errors
See Also:
Session.lock(String, Object, org.hibernate.LockMode)

save

public Serializable save(Object entity)
                  throws DataAccessException
Description copied from interface: HibernateOperations
Persist the given transient instance.

Specified by:
save in interface HibernateOperations
Parameters:
entity - the transient instance to persist
Returns:
the generated identifier
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.save(Object)

save

public void save(Object entity,
                 Serializable id)
          throws DataAccessException
Description copied from interface: HibernateOperations
Persist the given transient instance with the given identifier.

Specified by:
save in interface HibernateOperations
Parameters:
entity - the transient instance to persist
id - the identifier to assign
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.save(Object, java.io.Serializable)

save

public Serializable save(String entityName,
                         Object entity)
                  throws DataAccessException
Description copied from interface: HibernateOperations
Persist the given transient instance.

Specified by:
save in interface HibernateOperations
Parameters:
entityName - the name of a persistent entity
entity - the transient instance to persist
Returns:
the generated identifier
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.save(String, Object)

save

public void save(String entityName,
                 Object entity,
                 Serializable id)
          throws DataAccessException
Description copied from interface: HibernateOperations
Persist the given transient instance with the given identifier.

Specified by:
save in interface HibernateOperations
Parameters:
entityName - the name of a persistent entity
entity - the transient instance to persist
id - the identifier to assign
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.save(Object, java.io.Serializable)

update

public void update(Object entity)
            throws DataAccessException
Description copied from interface: HibernateOperations
Update the given persistent instance, associating it with the current Hibernate Session.

Specified by:
update in interface HibernateOperations
Parameters:
entity - the persistent instance to update
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.update(Object)

update

public void update(Object entity,
                   LockMode lockMode)
            throws DataAccessException
Description copied from interface: HibernateOperations
Update the given persistent instance, associating it with the current Hibernate Session.

Obtains the specified lock mode if the instance exists, implicitly checking whether the corresponding database entry still exists (throwing an OptimisticLockingFailureException if not found).

Specified by:
update in interface HibernateOperations
Parameters:
entity - the persistent instance to update
lockMode - the lock mode to obtain
Throws:
ObjectOptimisticLockingFailureException - if not found
DataAccessException - in case of Hibernate errors
See Also:
Session.update(Object)

update

public void update(String entityName,
                   Object entity)
            throws DataAccessException
Description copied from interface: HibernateOperations
Update the given persistent instance, associating it with the current Hibernate Session.

Specified by:
update in interface HibernateOperations
Parameters:
entityName - the name of a persistent entity
entity - the persistent instance to update
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.update(String, Object)

update

public void update(String entityName,
                   Object entity,
                   LockMode lockMode)
            throws DataAccessException
Description copied from interface: HibernateOperations
Update the given persistent instance, associating it with the current Hibernate Session.

Obtains the specified lock mode if the instance exists, implicitly checking whether the corresponding database entry still exists (throwing an OptimisticLockingFailureException if not found).

Specified by:
update in interface HibernateOperations
Parameters:
entityName - the name of a persistent entity
entity - the persistent instance to update
lockMode - the lock mode to obtain
Throws:
ObjectOptimisticLockingFailureException - if not found
DataAccessException - in case of Hibernate errors
See Also:
Session.update(String, Object)

saveOrUpdate

public void saveOrUpdate(Object entity)
                  throws DataAccessException
Description copied from interface: HibernateOperations
Save or update the given persistent instance, according to its id (matching the configured "unsaved-value"?). Associates the instance with the current Hibernate Session.

Specified by:
saveOrUpdate in interface HibernateOperations
Parameters:
entity - the persistent instance to save or update (to be associated with the Hibernate Session)
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.saveOrUpdate(Object)

saveOrUpdate

public void saveOrUpdate(String entityName,
                         Object entity)
                  throws DataAccessException
Description copied from interface: HibernateOperations
Save or update the given persistent instance, according to its id (matching the configured "unsaved-value"?). Associates the instance with the current Hibernate Session.

Specified by:
saveOrUpdate in interface HibernateOperations
Parameters:
entityName - the name of a persistent entity
entity - the persistent instance to save or update (to be associated with the Hibernate Session)
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.saveOrUpdate(String, Object)

saveOrUpdateAll

public void saveOrUpdateAll(Collection entities)
                     throws DataAccessException
Description copied from interface: HibernateOperations
Save or update all given persistent instances, according to its id (matching the configured "unsaved-value"?). Associates the instances with the current Hibernate Session.

Specified by:
saveOrUpdateAll in interface HibernateOperations
Parameters:
entities - the persistent instances to save or update (to be associated with the Hibernate Session)
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.saveOrUpdate(Object)

replicate

public void replicate(Object entity,
                      ReplicationMode replicationMode)
               throws DataAccessException
Description copied from interface: HibernateOperations
Persist the state of the given detached instance according to the given replication mode, reusing the current identifier value.

Specified by:
replicate in interface HibernateOperations
Parameters:
entity - the persistent object to replicate
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.replicate(Object, org.hibernate.ReplicationMode)

replicate

public void replicate(String entityName,
                      Object entity,
                      ReplicationMode replicationMode)
               throws DataAccessException
Description copied from interface: HibernateOperations
Persist the state of the given detached instance according to the given replication mode, reusing the current identifier value.

Specified by:
replicate in interface HibernateOperations
Parameters:
entityName - the name of a persistent entity
entity - the persistent object to replicate
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.replicate(String, Object, org.hibernate.ReplicationMode)

persist

public void persist(Object entity)
             throws DataAccessException
Description copied from interface: HibernateOperations
Persist the given transient instance. Follows JSR-220 semantics.

Similar to save, associating the given object with the current Hibernate Session.

Specified by:
persist in interface HibernateOperations
Parameters:
entity - the persistent instance to persist
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.persist(Object), HibernateOperations.save(java.lang.Object)

persist

public void persist(String entityName,
                    Object entity)
             throws DataAccessException
Description copied from interface: HibernateOperations
Persist the given transient instance. Follows JSR-220 semantics.

Similar to save, associating the given object with the current Hibernate Session.

Specified by:
persist in interface HibernateOperations
Parameters:
entityName - the name of a persistent entity
entity - the persistent instance to persist
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.persist(String, Object), HibernateOperations.save(java.lang.Object)

merge

public Object merge(Object entity)
             throws DataAccessException
Description copied from interface: HibernateOperations
Copy the state of the given object onto the persistent object with the same identifier. Follows JSR-220 semantics.

Similar to saveOrUpdate, but never associates the given object with the current Hibernate Session. In case of a new entity, the state will be copied over as well.

Note that merge will not update the identifiers in the passed-in object graph (in contrast to TopLink)! Consider registering Spring's IdTransferringMergeEventListener if you'd like to have newly assigned ids transferred to the original object graph too.

Specified by:
merge in interface HibernateOperations
Parameters:
entity - the object to merge with the corresponding persistence instance
Returns:
the updated, registered persistent instance
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.merge(Object), HibernateOperations.saveOrUpdate(java.lang.Object), IdTransferringMergeEventListener

merge

public Object merge(String entityName,
                    Object entity)
             throws DataAccessException
Description copied from interface: HibernateOperations
Copy the state of the given object onto the persistent object with the same identifier. Follows JSR-220 semantics.

Similar to saveOrUpdate, but never associates the given object with the current Hibernate Session. In case of a new entity, the state will be copied over as well.

Note that merge will not update the identifiers in the passed-in object graph (in contrast to TopLink)! Consider registering Spring's IdTransferringMergeEventListener if you'd like to have newly assigned ids transferred to the original object graph too.

Specified by:
merge in interface HibernateOperations
Parameters:
entityName - the name of a persistent entity
entity - the object to merge with the corresponding persistence instance
Returns:
the updated, registered persistent instance
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.merge(String, Object), HibernateOperations.saveOrUpdate(java.lang.Object)

delete

public void delete(Object entity)
            throws DataAccessException
Description copied from interface: HibernateOperations
Delete the given persistent instance.

Specified by:
delete in interface HibernateOperations
Parameters:
entity - the persistent instance to delete
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.delete(Object)

delete

public void delete(Object entity,
                   LockMode lockMode)
            throws DataAccessException
Description copied from interface: HibernateOperations
Delete the given persistent instance.

Obtains the specified lock mode if the instance exists, implicitly checking whether the corresponding database entry still exists (throwing an OptimisticLockingFailureException if not found).

Specified by:
delete in interface HibernateOperations
Parameters:
entity - the persistent instance to delete
lockMode - the lock mode to obtain
Throws:
ObjectOptimisticLockingFailureException - if not found
DataAccessException - in case of Hibernate errors
See Also:
Session.delete(Object)

deleteAll

public void deleteAll(Collection entities)
               throws DataAccessException
Description copied from interface: HibernateOperations
Delete all given persistent instances.

This can be combined with any of the find methods to delete by query in two lines of code.

Specified by:
deleteAll in interface HibernateOperations
Parameters:
entities - the persistent instances to delete
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.delete(Object)

flush

public void flush()
           throws DataAccessException
Description copied from interface: HibernateOperations
Flush all pending saves, updates and deletes to the database.

Only invoke this for selective eager flushing, for example when JDBC code needs to see certain changes within the same transaction. Else, it's preferable to rely on auto-flushing at transaction completion.

Specified by:
flush in interface HibernateOperations
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.flush()

clear

public void clear()
           throws DataAccessException
Description copied from interface: HibernateOperations
Remove all objects from the Session cache, and cancel all pending saves, updates and deletes.

Specified by:
clear in interface HibernateOperations
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.clear()

find

public List find(String queryString)
          throws DataAccessException
Description copied from interface: HibernateOperations
Execute a query for persistent instances.

Specified by:
find in interface HibernateOperations
Parameters:
queryString - a query expressed in Hibernate's query language
Returns:
a List containing 0 or more persistent instances
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.createQuery(java.lang.String)

find

public List find(String queryString,
                 Object value)
          throws DataAccessException
Description copied from interface: HibernateOperations
Execute a query for persistent instances, binding one value to a "?" parameter in the query string.

Specified by:
find in interface HibernateOperations
Parameters:
queryString - a query expressed in Hibernate's query language
value - the value of the parameter
Returns:
a List containing 0 or more persistent instances
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.createQuery(java.lang.String)

find

public List find(String queryString,
                 Object[] values)
          throws DataAccessException
Description copied from interface: HibernateOperations
Execute a query for persistent instances, binding a number of values to "?" parameters in the query string.

Specified by:
find in interface HibernateOperations
Parameters:
queryString - a query expressed in Hibernate's query language
values - the values of the parameters
Returns:
a List containing 0 or more persistent instances
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.createQuery(java.lang.String)

findByNamedParam

public List findByNamedParam(String queryString,
                             String paramName,
                             Object value)
                      throws DataAccessException
Description copied from interface: HibernateOperations
Execute a query for persistent instances, binding one value to a ":" named parameter in the query string.

Specified by:
findByNamedParam in interface HibernateOperations
Parameters:
queryString - the name of a Hibernate query in a mapping file
paramName - the name of parameter
value - the value of the parameter
Returns:
a List containing 0 or more persistent instances
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.getNamedQuery(String)

findByNamedParam

public List findByNamedParam(String queryString,
                             String[] paramNames,
                             Object[] values)
                      throws DataAccessException
Description copied from interface: HibernateOperations
Execute a query for persistent instances, binding a number of values to ":" named parameters in the query string.

Specified by:
findByNamedParam in interface HibernateOperations
Parameters:
queryString - a query expressed in Hibernate's query language
paramNames - the names of the parameters
values - the values of the parameters
Returns:
a List containing 0 or more persistent instances
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.getNamedQuery(String)

findByValueBean

public List findByValueBean(String queryString,
                            Object valueBean)
                     throws DataAccessException
Description copied from interface: HibernateOperations
Execute a query for persistent instances, binding the properties of the given bean to named parameters in the query string.

Specified by:
findByValueBean in interface HibernateOperations
Parameters:
queryString - a query expressed in Hibernate's query language
valueBean - the values of the parameters
Returns:
a List containing 0 or more persistent instances
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Query.setProperties(java.lang.Object), Session.createQuery(java.lang.String)

findByNamedQuery

public List findByNamedQuery(String queryName)
                      throws DataAccessException
Description copied from interface: HibernateOperations
Execute a named query for persistent instances. A named query is defined in a Hibernate mapping file.

Specified by:
findByNamedQuery in interface HibernateOperations
Parameters:
queryName - the name of a Hibernate query in a mapping file
Returns:
a List containing 0 or more persistent instances
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.getNamedQuery(String)

findByNamedQuery

public List findByNamedQuery(String queryName,
                             Object value)
                      throws DataAccessException
Description copied from interface: HibernateOperations
Execute a named query for persistent instances, binding one value to a "?" parameter in the query string. A named query is defined in a Hibernate mapping file.

Specified by:
findByNamedQuery in interface HibernateOperations
Parameters:
queryName - the name of a Hibernate query in a mapping file
value - the value of the parameter
Returns:
a List containing 0 or more persistent instances
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.getNamedQuery(String)

findByNamedQuery

public List findByNamedQuery(String queryName,
                             Object[] values)
                      throws DataAccessException
Description copied from interface: HibernateOperations
Execute a named query for persistent instances, binding a number of values to "?" parameters in the query string. A named query is defined in a Hibernate mapping file.

Specified by:
findByNamedQuery in interface HibernateOperations
Parameters:
queryName - the name of a Hibernate query in a mapping file
values - the values of the parameters
Returns:
a List containing 0 or more persistent instances
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.getNamedQuery(String)

findByNamedQueryAndNamedParam

public List findByNamedQueryAndNamedParam(String queryName,
                                          String paramName,
                                          Object value)
                                   throws DataAccessException
Description copied from interface: HibernateOperations
Execute a named query for persistent instances, binding one value to a ":" named parameter in the query string. A named query is defined in a Hibernate mapping file.

Specified by:
findByNamedQueryAndNamedParam in interface HibernateOperations
Parameters:
queryName - the name of a Hibernate query in a mapping file
paramName - the name of parameter
value - the value of the parameter
Returns:
a List containing 0 or more persistent instances
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.getNamedQuery(String)

findByNamedQueryAndNamedParam

public List findByNamedQueryAndNamedParam(String queryName,
                                          String[] paramNames,
                                          Object[] values)
                                   throws DataAccessException
Description copied from interface: HibernateOperations
Execute a named query for persistent instances, binding a number of values to ":" named parameters in the query string. A named query is defined in a Hibernate mapping file.

Specified by:
findByNamedQueryAndNamedParam in interface HibernateOperations
Parameters:
queryName - the name of a Hibernate query in a mapping file
paramNames - the names of the parameters
values - the values of the parameters
Returns:
a List containing 0 or more persistent instances
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.getNamedQuery(String)

findByNamedQueryAndValueBean

public List findByNamedQueryAndValueBean(String queryName,
                                         Object valueBean)
                                  throws DataAccessException
Description copied from interface: HibernateOperations
Execute a named query for persistent instances, binding the properties of the given bean to ":" named parameters in the query string. A named query is defined in a Hibernate mapping file.

Specified by:
findByNamedQueryAndValueBean in interface HibernateOperations
Parameters:
queryName - the name of a Hibernate query in a mapping file
valueBean - the values of the parameters
Returns:
a List containing 0 or more persistent instances
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Query.setProperties(java.lang.Object), Session.getNamedQuery(String)

findByCriteria

public List findByCriteria(DetachedCriteria criteria)
                    throws DataAccessException
Description copied from interface: HibernateOperations
Execute a query based on a given Hibernate criteria object.

Specified by:
findByCriteria in interface HibernateOperations
Parameters:
criteria - the detached Hibernate criteria object, which can for example be held in an instance variable of a DAO
Returns:
a List containing 0 or more persistent instances
Throws:
DataAccessException - in case of Hibernate errors
See Also:
DetachedCriteria.getExecutableCriteria(org.hibernate.Session)

findByCriteria

public List findByCriteria(DetachedCriteria criteria,
                           int firstResult,
                           int maxResults)
                    throws DataAccessException
Description copied from interface: HibernateOperations
Execute a query based on a given Hibernate criteria object.

Specified by:
findByCriteria in interface HibernateOperations
Parameters:
criteria - the detached Hibernate criteria object, which can for example be held in an instance variable of a DAO
firstResult - the index of the first result object to be retrieved (numbered from 0)
maxResults - the maximum number of result objects to retrieve (or <=0 for no limit)
Returns:
a List containing 0 or more persistent instances
Throws:
DataAccessException - in case of Hibernate errors
See Also:
DetachedCriteria.getExecutableCriteria(org.hibernate.Session), Criteria.setFirstResult(int), Criteria.setMaxResults(int)

findByExample

public List findByExample(Object exampleEntity)
                   throws DataAccessException
Description copied from interface: HibernateOperations
Execute a query based on a given example entity object.

Specified by:
findByExample in interface HibernateOperations
Parameters:
exampleEntity - an instance of the desired entity, serving as example for "query-by-example"
Returns:
a List containing 0 or more persistent instances
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Example.create(Object)

findByExample

public List findByExample(Object exampleEntity,
                          int firstResult,
                          int maxResults)
                   throws DataAccessException
Description copied from interface: HibernateOperations
Execute a query based on a given example entity object.

Specified by:
findByExample in interface HibernateOperations
Parameters:
exampleEntity - an instance of the desired entity, serving as example for "query-by-example"
firstResult - the index of the first result object to be retrieved (numbered from 0)
maxResults - the maximum number of result objects to retrieve (or <=0 for no limit)
Returns:
a List containing 0 or more persistent instances
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Example.create(Object), Criteria.setFirstResult(int), Criteria.setMaxResults(int)

iterate

public Iterator iterate(String queryString)
                 throws DataAccessException
Description copied from interface: HibernateOperations
Execute a query for persistent instances.

Returns the results as Iterator. Entities returned are initialized on demand. See Hibernate docs for details.

Specified by:
iterate in interface HibernateOperations
Parameters:
queryString - a query expressed in Hibernate's query language
Returns:
an Iterator containing 0 or more persistent instances
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.createQuery(java.lang.String), Query.iterate()

iterate

public Iterator iterate(String queryString,
                        Object value)
                 throws DataAccessException
Description copied from interface: HibernateOperations
Execute a query for persistent instances, binding one value to a "?" parameter in the query string.

Returns the results as Iterator. Entities returned are initialized on demand. See Hibernate docs for details.

Specified by:
iterate in interface HibernateOperations
Parameters:
queryString - a query expressed in Hibernate's query language
value - the value of the parameter
Returns:
an Iterator containing 0 or more persistent instances
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.createQuery(java.lang.String), Query.iterate()

iterate

public Iterator iterate(String queryString,
                        Object[] values)
                 throws DataAccessException
Description copied from interface: HibernateOperations
Execute a query for persistent instances, binding a number of values to "?" parameters in the query string.

Returns the results as Iterator. Entities returned are initialized on demand. See Hibernate docs for details.

Specified by:
iterate in interface HibernateOperations
Parameters:
queryString - a query expressed in Hibernate's query language
values - the values of the parameters
Returns:
an Iterator containing 0 or more persistent instances
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.createQuery(java.lang.String), Query.iterate()

closeIterator

public void closeIterator(Iterator it)
                   throws DataAccessException
Description copied from interface: HibernateOperations
Close an Iterator created by iterate operations immediately, instead of waiting until the session is closed or disconnected.

Specified by:
closeIterator in interface HibernateOperations
Parameters:
it - the Iterator to close
Throws:
DataAccessException - if the Iterator could not be closed
See Also:
Hibernate.close(java.util.Iterator)

bulkUpdate

public int bulkUpdate(String queryString)
               throws DataAccessException
Description copied from interface: HibernateOperations
Update/delete all objects according to the given query.

Returns the number of entity instances updated/deleted.

Specified by:
bulkUpdate in interface HibernateOperations
Parameters:
queryString - an update/delete query expressed in Hibernate's query language
Returns:
the number of instances updated/deleted
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.createQuery(java.lang.String), Query.executeUpdate()

bulkUpdate

public int bulkUpdate(String queryString,
                      Object value)
               throws DataAccessException
Description copied from interface: HibernateOperations
Update/delete all objects according to the given query, binding one value to a "?" parameter in the query string.

Returns the number of entity instances updated/deleted.

Specified by:
bulkUpdate in interface HibernateOperations
Parameters:
queryString - an update/delete query expressed in Hibernate's query language
value - the value of the parameter
Returns:
the number of instances updated/deleted
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.createQuery(java.lang.String), Query.executeUpdate()

bulkUpdate

public int bulkUpdate(String queryString,
                      Object[] values)
               throws DataAccessException
Description copied from interface: HibernateOperations
Update/delete all objects according to the given query, binding a number of values to "?" parameters in the query string.

Returns the number of entity instances updated/deleted.

Specified by:
bulkUpdate in interface HibernateOperations
Parameters:
queryString - an update/delete query expressed in Hibernate's query language
values - the values of the parameters
Returns:
the number of instances updated/deleted
Throws:
DataAccessException - in case of Hibernate errors
See Also:
Session.createQuery(java.lang.String), Query.executeUpdate()

checkWriteOperationAllowed

protected void checkWriteOperationAllowed(Session session)
                                   throws InvalidDataAccessApiUsageException
Check whether write operations are allowed on the given Session.

Default implementation throws an InvalidDataAccessApiUsageException in case of FlushMode.NEVER. Can be overridden in subclasses.

Parameters:
session - current Hibernate Session
Throws:
InvalidDataAccessApiUsageException - if write operations are not allowed
See Also:
setCheckWriteOperations(boolean), HibernateAccessor.getFlushMode(), HibernateAccessor.FLUSH_EAGER, Session.getFlushMode(), FlushMode.NEVER

prepareQuery

protected void prepareQuery(Query queryObject)
Prepare the given Query object, applying cache settings and/or a transaction timeout.

Parameters:
queryObject - the Query object to prepare
See Also:
setCacheQueries(boolean), setQueryCacheRegion(java.lang.String), SessionFactoryUtils.applyTransactionTimeout(org.hibernate.Query, org.hibernate.SessionFactory)

prepareCriteria

protected void prepareCriteria(Criteria criteria)
Prepare the given Criteria object, applying cache settings and/or a transaction timeout.

Parameters:
criteria - the Criteria object to prepare
See Also:
setCacheQueries(boolean), setQueryCacheRegion(java.lang.String), SessionFactoryUtils.applyTransactionTimeout(org.hibernate.Query, org.hibernate.SessionFactory)

applyNamedParameterToQuery

protected void applyNamedParameterToQuery(Query queryObject,
                                          String paramName,
                                          Object value)
                                   throws HibernateException
Apply the given name parameter to the given Query object.

Parameters:
queryObject - the Query object
paramName - the name of the parameter
value - the value of the parameter
Throws:
HibernateException - if thrown by the Query object
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