java.lang.Object
- org.springframework.web.filter.GenericFilterBean
- - org.springframework.web.filter.OncePerRequestFilter
  - - org.springframework.orm.jdo.support.OpenPersistenceManagerInViewFilter

All Implemented Interfaces:
Filter, Aware, BeanNameAware, DisposableBean, InitializingBean, EnvironmentAware, EnvironmentCapable, ServletContextAware
```
public class OpenPersistenceManagerInViewFilter
extends OncePerRequestFilter
```
Servlet Filter that binds a JDO PersistenceManager to the thread for the entire processing of the request. Intended for the "Open PersistenceManager in View" pattern, i.e. to allow for lazy loading in web views despite the original transactions already being completed.
This filter makes JDO PersistenceManagers available via the current thread, which will be autodetected by transaction managers. It is suitable for service layer transactions via JdoTransactionManager or JtaTransactionManager as well as for non-transactional read-only execution.
Looks up the PersistenceManagerFactory in Spring's root web application context. Supports a "persistenceManagerFactoryBeanName" filter init-param in web.xml; the default bean name is "persistenceManagerFactory".
Since:
1.1
Author:
Juergen Hoeller
See Also:
OpenPersistenceManagerInViewInterceptor, JdoTransactionManager, PersistenceManagerFactoryUtils.getPersistenceManager(javax.jdo.PersistenceManagerFactory, boolean), TransactionSynchronizationManager

Field Summary
Fields
Modifier and Type Field Description
static String DEFAULT_PERSISTENCE_MANAGER_FACTORY_BEAN_NAME
- Fields inherited from class org.springframework.web.filter.OncePerRequestFilter
  ALREADY_FILTERED_SUFFIX
- Fields inherited from class org.springframework.web.filter.GenericFilterBean
  logger

Constructor Summary
Constructors
Constructor Description
OpenPersistenceManagerInViewFilter()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected void`	`doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)`	Same contract as for `doFilter`, but guaranteed to be just invoked once per request within a single request thread.
`protected String`	`getPersistenceManagerFactoryBeanName()`	Return the bean name of the PersistenceManagerFactory to fetch from Spring's root application context.
`protected javax.jdo.PersistenceManagerFactory`	`lookupPersistenceManagerFactory()`	Look up the PersistenceManagerFactory that this filter should use.
`protected javax.jdo.PersistenceManagerFactory`	`lookupPersistenceManagerFactory(HttpServletRequest request)`	Look up the PersistenceManagerFactory that this filter should use, taking the current HTTP request as argument.
`void`	`setPersistenceManagerFactoryBeanName(String persistenceManagerFactoryBeanName)`	Set the bean name of the PersistenceManagerFactory to fetch from Spring's root application context.
`protected boolean`	`shouldNotFilterAsyncDispatch()`	Returns "false" so that the filter may re-bind the opened `PersistenceManager` to each asynchronously dispatched thread and postpone closing it until the very last asynchronous dispatch.
`protected boolean`	`shouldNotFilterErrorDispatch()`	Returns "false" so that the filter may provide an `PersistenceManager` to each error dispatches.

Methods inherited from class org.springframework.web.filter.OncePerRequestFilter
doFilter, getAlreadyFilteredAttributeName, isAsyncDispatch, isAsyncStarted, shouldNotFilter

Methods inherited from class org.springframework.web.filter.GenericFilterBean
addRequiredProperty, afterPropertiesSet, createEnvironment, destroy, getEnvironment, getFilterConfig, getFilterName, getServletContext, init, initBeanWrapper, initFilterBean, setBeanName, setEnvironment, setServletContext

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - DEFAULT_PERSISTENCE_MANAGER_FACTORY_BEAN_NAME
```
public static final String DEFAULT_PERSISTENCE_MANAGER_FACTORY_BEAN_NAME
```
    See Also:
    Constant Field Values
- Constructor Detail
  - OpenPersistenceManagerInViewFilter
```
public OpenPersistenceManagerInViewFilter()
```
- Method Detail
  - setPersistenceManagerFactoryBeanName
```
public void setPersistenceManagerFactoryBeanName(String persistenceManagerFactoryBeanName)
```
    Set the bean name of the PersistenceManagerFactory to fetch from Spring's root application context. Default is "persistenceManagerFactory".
    See Also:
    DEFAULT_PERSISTENCE_MANAGER_FACTORY_BEAN_NAME
  - getPersistenceManagerFactoryBeanName
```
protected String getPersistenceManagerFactoryBeanName()
```
    Return the bean name of the PersistenceManagerFactory to fetch from Spring's root application context.
  - shouldNotFilterAsyncDispatch
```
protected boolean shouldNotFilterAsyncDispatch()
```
    Returns "false" so that the filter may re-bind the opened PersistenceManager to each asynchronously dispatched thread and postpone closing it until the very last asynchronous dispatch.
    Overrides:
    shouldNotFilterAsyncDispatch in class OncePerRequestFilter
  - shouldNotFilterErrorDispatch
```
protected boolean shouldNotFilterErrorDispatch()
```
    Returns "false" so that the filter may provide an PersistenceManager to each error dispatches.
    Overrides:
    shouldNotFilterErrorDispatch in class OncePerRequestFilter
  - doFilterInternal
```
protected void doFilterInternal(HttpServletRequest request,
                                HttpServletResponse response,
                                FilterChain filterChain)
                         throws ServletException,
                                IOException
```
    Description copied from class: OncePerRequestFilter
    Same contract as for doFilter, but guaranteed to be just invoked once per request within a single request thread. See OncePerRequestFilter.shouldNotFilterAsyncDispatch() for details.
    Provides HttpServletRequest and HttpServletResponse arguments instead of the default ServletRequest and ServletResponse ones.
    Specified by:
    doFilterInternal in class OncePerRequestFilter
    Throws:
    ServletException
    IOException
  - lookupPersistenceManagerFactory
```
protected javax.jdo.PersistenceManagerFactory lookupPersistenceManagerFactory(HttpServletRequest request)
```
    Look up the PersistenceManagerFactory that this filter should use, taking the current HTTP request as argument.
    Default implementation delegates to the lookupPersistenceManagerFactory without arguments.
    Returns:
    the PersistenceManagerFactory to use
    See Also:
    lookupPersistenceManagerFactory()
  - lookupPersistenceManagerFactory
```
protected javax.jdo.PersistenceManagerFactory lookupPersistenceManagerFactory()
```
    Look up the PersistenceManagerFactory that this filter should use. The default implementation looks for a bean with the specified name in Spring's root application context.
    Returns:
    the PersistenceManagerFactory to use
    See Also:
    getPersistenceManagerFactoryBeanName()

Class OpenPersistenceManagerInViewFilter

Field Summary

Fields inherited from class org.springframework.web.filter.OncePerRequestFilter

Fields inherited from class org.springframework.web.filter.GenericFilterBean

Constructor Summary

Method Summary

Methods inherited from class org.springframework.web.filter.OncePerRequestFilter

Methods inherited from class org.springframework.web.filter.GenericFilterBean

Methods inherited from class java.lang.Object

Field Detail

DEFAULT_PERSISTENCE_MANAGER_FACTORY_BEAN_NAME

Constructor Detail

OpenPersistenceManagerInViewFilter

Method Detail

setPersistenceManagerFactoryBeanName

getPersistenceManagerFactoryBeanName

shouldNotFilterAsyncDispatch

shouldNotFilterErrorDispatch

doFilterInternal

lookupPersistenceManagerFactory

lookupPersistenceManagerFactory