Package org.springframework.jndi

Class JndiObjectFactoryBean

java.lang.Object
org.springframework.jndi.JndiAccessor
org.springframework.jndi.JndiLocatorSupport
org.springframework.jndi.JndiObjectLocator
org.springframework.jndi.JndiObjectFactoryBean
All Implemented Interfaces:
org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanClassLoaderAware, org.springframework.beans.factory.BeanFactoryAware, org.springframework.beans.factory.FactoryBean<Object>, org.springframework.beans.factory.InitializingBean
public class JndiObjectFactoryBean extends JndiObjectLocator implements org.springframework.beans.factory.FactoryBean<Object>, org.springframework.beans.factory.BeanFactoryAware, org.springframework.beans.factory.BeanClassLoaderAware
FactoryBean that looks up a JNDI object. Exposes the object found in JNDI for bean references, e.g. for data access object's "dataSource" property in case of a DataSource.

The typical usage will be to register this as singleton factory (e.g. for a certain JNDI-bound DataSource) in an application context, and give bean references to application services that need it.

The default behavior is to look up the JNDI object on startup and cache it. This can be customized through the "lookupOnStartup" and "cache" properties, using a JndiObjectTargetSource underneath. Note that you need to specify a "proxyInterface" in such a scenario, since the actual JNDI object type is not known in advance.

Of course, bean classes in a Spring environment may look up e.g. a DataSource from JNDI themselves. This class simply enables central configuration of the JNDI name, and easy switching to non-JNDI alternatives. The latter is particularly convenient for test setups, reuse in standalone clients, etc.

Note that switching to e.g. DriverManagerDataSource is just a matter of configuration: Simply replace the definition of this FactoryBean with a org.springframework.jdbc.datasource.DriverManagerDataSource definition!

Since:
22.05.2003
Author:
Juergen Hoeller
See Also:

  • Constructor Details

    • JndiObjectFactoryBean

      public JndiObjectFactoryBean()

  • Method Details

    • setProxyInterface

      public void setProxyInterface(Class<?> proxyInterface)
      Specify the proxy interface to use for the JNDI object.

      Typically used in conjunction with "lookupOnStartup"=false and/or "cache"=false. Needs to be specified because the actual JNDI object type is not known in advance in case of a lazy lookup.

      See Also:

    • setProxyInterfaces

      public void setProxyInterfaces(Class<?>... proxyInterfaces)
      Specify multiple proxy interfaces to use for the JNDI object.

      Typically used in conjunction with "lookupOnStartup"=false and/or "cache"=false. Note that proxy interfaces will be autodetected from a specified "expectedType", if necessary.

      See Also:

    • setLookupOnStartup

      public void setLookupOnStartup(boolean lookupOnStartup)
      Set whether to look up the JNDI object on startup. Default is "true".

      Can be turned off to allow for late availability of the JNDI object. In this case, the JNDI object will be fetched on first access.

      For a lazy lookup, a proxy interface needs to be specified.

      See Also:

    • setCache

      public void setCache(boolean cache)
      Set whether to cache the JNDI object once it has been located. Default is "true".

      Can be turned off to allow for hot redeployment of JNDI objects. In this case, the JNDI object will be fetched for each invocation.

      For hot redeployment, a proxy interface needs to be specified.

      See Also:

    • setExposeAccessContext

      public void setExposeAccessContext(boolean exposeAccessContext)
      Set whether to expose the JNDI environment context for all access to the target object, i.e. for all method invocations on the exposed object reference.

      Default is "false", i.e. to only expose the JNDI context for object lookup. Switch this flag to "true" in order to expose the JNDI environment (including the authorization context) for each method invocation, as needed by WebLogic for JNDI-obtained factories (e.g. JDBC DataSource, JMS ConnectionFactory) with authorization requirements.

    • setDefaultObject

      public void setDefaultObject(Object defaultObject)
      Specify a default object to fall back to if the JNDI lookup fails. Default is none.

      This can be an arbitrary bean reference or literal value. It is typically used for literal values in scenarios where the JNDI environment might define specific config settings but those are not required to be present.

      Note: This is only supported for lookup on startup. If specified together with JndiObjectLocator.setExpectedType(java.lang.Class<?>), the specified value needs to be either of that type or convertible to it.

      See Also:

    • setBeanFactory

      public void setBeanFactory(org.springframework.beans.factory.BeanFactory beanFactory)
      Specified by:
      setBeanFactory in interface org.springframework.beans.factory.BeanFactoryAware

    • setBeanClassLoader

      public void setBeanClassLoader(ClassLoader classLoader)
      Specified by:
      setBeanClassLoader in interface org.springframework.beans.factory.BeanClassLoaderAware

    • afterPropertiesSet

      public void afterPropertiesSet() throws IllegalArgumentException, NamingException
      Look up the JNDI object and store it.
      Specified by:
      afterPropertiesSet in interface org.springframework.beans.factory.InitializingBean
      Overrides:
      afterPropertiesSet in class JndiObjectLocator
      Throws:
      IllegalArgumentException
      NamingException

    • lookupWithFallback

      protected Object lookupWithFallback() throws NamingException
      Lookup variant that returns the specified "defaultObject" (if any) in case of lookup failure.
      Returns:
      the located object, or the "defaultObject" as fallback
      Throws:
      NamingException - in case of lookup failure without fallback
      See Also:

    • getObject

      @Nullable public Object getObject()
      Return the singleton JNDI object.
      Specified by:
      getObject in interface org.springframework.beans.factory.FactoryBean<Object>

    • getObjectType

      @Nullable public Class<?> getObjectType()
      Specified by:
      getObjectType in interface org.springframework.beans.factory.FactoryBean<Object>

    • isSingleton

      public boolean isSingleton()
      Specified by:
      isSingleton in interface org.springframework.beans.factory.FactoryBean<Object>

    • createCompositeInterface

      protected Class<?> createCompositeInterface(Class<?>[] interfaces)
      Create a composite interface Class for the given interfaces, implementing the given interfaces in one single Class.

      The default implementation builds a JDK proxy class for the given interfaces.

      Parameters:
      interfaces - the interfaces to merge
      Returns:
      the merged interface as Class
      See Also: