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FilterDefinitionFactoryBean (Spring Framework API 2.1) - Spring Framework 2.1.0 API 文档英文版

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org.springframework.orm.hibernate3
Class FilterDefinitionFactoryBean

java.lang.Object
  org.springframework.orm.hibernate3.FilterDefinitionFactoryBean

All Implemented Interfaces:

BeanNameAware, FactoryBean, InitializingBean

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public class FilterDefinitionFactoryBean
extends Object
implements FactoryBean, BeanNameAware, InitializingBean

Convenient FactoryBean for defining Hibernate FilterDefinitions. Exposes a corresponding Hibernate FilterDefinition object.

Typically defined as an inner bean within a LocalSessionFactoryBean definition, as the list element for the "filterDefinitions" bean property. For example:

 <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
   ...
   <property name="filterDefinitions">
     <list>
       <bean class="org.springframework.orm.hibernate3.FilterDefinitionFactoryBean">
         <property name="filterName" value="myFilter"/>
         <property name="parameterTypes">
           <props>
             <prop key="myParam">string</prop>
             <prop key="myOtherParam">long</prop>
           </props>
         </property>
       </bean>
     </list>
   </property>
   ...
 </bean>

Alternatively, specify a bean id (or name) attribute for the inner bean, instead of the "filterName" property.

Since:

1.2

Author:

Juergen Hoeller

See Also:

FilterDefinition, LocalSessionFactoryBean.setFilterDefinitions(org.hibernate.engine.FilterDefinition[])

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Constructor Summary
FilterDefinitionFactoryBean()

 

Method Summary
void	afterPropertiesSet()           Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).
Object	getObject()           Return an instance (possibly shared or independent) of the object managed by this factory.
Class	getObjectType()           Return the type of object that this FactoryBean creates, or null if not known in advance.
boolean	isSingleton()           Is the object managed by this factory a singleton?
void	setBeanName(String name)           If no explicit filter name has been specified, the bean name of the FilterDefinitionFactoryBean will be used.
void	setDefaultFilterCondition(String defaultFilterCondition)           Specify a default filter condition for the filter, if any.
void	setFilterName(String filterName)           Set the name of the filter.
void	setParameterTypes(Properties parameterTypes)           Set the parameter types for the filter, with parameter names as keys and type names as values.

 

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

 

Constructor Detail

FilterDefinitionFactoryBean

public FilterDefinitionFactoryBean()

Method Detail

setFilterName

public void setFilterName(String filterName)

Set the name of the filter.

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setParameterTypes

public void setParameterTypes(Properties parameterTypes)

Set the parameter types for the filter, with parameter names as keys and type names as values.

See Also:

TypeFactory.heuristicType(String)

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setDefaultFilterCondition

public void setDefaultFilterCondition(String defaultFilterCondition)

Specify a default filter condition for the filter, if any.

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setBeanName

public void setBeanName(String name)

If no explicit filter name has been specified, the bean name of the FilterDefinitionFactoryBean will be used.

Specified by:

setBeanName in interface BeanNameAware

Parameters:

name - the name of the bean in the factory. Note that this name is the actual bean name used in the factory, which may differ from the originally specified name: in particular for inner bean names, the actual bean name might have been made unique through appending "#..." suffixes. Use the BeanFactoryUtils.originalBeanName(String) method to extract the original bean name (without suffix), if desired.

See Also:

setFilterName(java.lang.String)

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afterPropertiesSet

public void afterPropertiesSet()

Description copied from interface: InitializingBean

Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).

This method allows the bean instance to perform initialization only possible when all bean properties have been set and to throw an exception in the event of misconfiguration.

Specified by:

afterPropertiesSet in interface InitializingBean

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getObject

public Object getObject()

Description copied from interface: FactoryBean

Return an instance (possibly shared or independent) of the object managed by this factory.

As with a BeanFactory, this allows support for both the Singleton and Prototype design pattern.

If this FactoryBean is not fully initialized yet at the time of the call (for example because it is involved in a circular reference), throw a corresponding FactoryBeanNotInitializedException.

As of Spring 2.0, FactoryBeans are allowed to return null objects. The factory will consider this as normal value to be used; it will not throw a FactoryBeanNotInitializedException in this case anymore. FactoryBean implementations are encouraged to throw FactoryBeanNotInitializedException themselves now, as appropriate.

Specified by:

getObject in interface FactoryBean

Returns:

an instance of the bean (can be null)

See Also:

FactoryBeanNotInitializedException

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getObjectType

public Class getObjectType()

Description copied from interface: FactoryBean

Return the type of object that this FactoryBean creates, or null if not known in advance.

This allows one to check for specific types of beans without instantiating objects, for example on autowiring.

In the case of implementations that are creating a singleton object, this method should try to avoid singleton creation as far as possible; it should rather estimate the type in advance. For prototypes, returning a meaningful type here is advisable too.

This method can be called before this FactoryBean has been fully initialized. It must not rely on state created during initialization; of course, it can still use such state if available.

NOTE: Autowiring will simply ignore FactoryBeans that return null here. Therefore it is highly recommended to implement this method properly, using the current state of the FactoryBean.

Specified by:

getObjectType in interface FactoryBean

Returns:

the type of object that this FactoryBean creates, or null if not known at the time of the call

See Also:

ListableBeanFactory.getBeansOfType(java.lang.Class)

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isSingleton

public boolean isSingleton()

Description copied from interface: FactoryBean

Is the object managed by this factory a singleton? That is, will FactoryBean.getObject() always return the same object (a reference that can be cached)?

NOTE: If a FactoryBean indicates to hold a singleton object, the object returned from getObject() might get cached by the owning BeanFactory. Hence, do not return true unless the FactoryBean always exposes the same reference.

The singleton status of the FactoryBean itself will generally be provided by the owning BeanFactory; usually, it has to be defined as singleton there.

NOTE: This method returning false does not necessarily indicate that returned objects are independent instances. An implementation of the extended SmartFactoryBean interface may explicitly indicate independent instances through its SmartFactoryBean.isPrototype() method. Plain FactoryBean implementations which do not implement this extended interface are simply assumed to always return independent instances if the isSingleton() implementation returns false.

Specified by:

isSingleton in interface FactoryBean

Returns:

if the exposed object is a singleton

See Also:

FactoryBean.getObject(), SmartFactoryBean.isPrototype()

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