PropertyPlaceholderConfigurer search in JNDI

[SSSS]

    <bean id="propertyConfigurer" 
      class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> 
      <property name="locations"> 
         <list> 
         <value>classes/datasource/DataSourceTypes.properties</value> 
         <!--<value>classpath&#58;deployment.properties</value> --> 
             
         </list> 
      </property> 
   </bean>

I have one properties file in JNDI (not in the classpath). So I want PropertyPlaceHolderConfigurer to search in JNDI for that properties file and replace the keys from that properties file

Is it possible?

Any help will be greatly appreciated..
Thanks,
SSSS.

[Alef Arendsen]

By default, the Resoure abstraction is used with the PropertyPlacheolderConfigurer. How did you store the properties file in JNDI (a Properties object or a String)?

I think it'd be possible to create a jndi Resource abstraction in order to allow you to do something like this:

<value>jndi:java:/comp/env/MyProperties</value>

Coudl you please elaborate on how you've stored the properties file in JNDI?

rgds,
Alef

[SSSS]

This tag is in the Jboss App servers Jboss_service.xml

 <!-- ==================================================================== -->
  <!-- Deployment Scanning                                                  -->
  <!-- ==================================================================== -->
  <mbean code="org.jboss.naming.ExternalContext"
         name="jboss.jndi&#58;service=ExternalContext,jndiName=external/config">
      <attribute name="JndiName">deploymentConfig</attribute>
      <attribute name="Properties">
          java.naming.factory.initial=com.sun.jndi.fscontext.FSContextFactory
          java.naming.provider.url=file&#58;///c&#58;/config/
      </attribute>
      <attribute name="InitialContext">javax.naming.InitialContext</attribute>
  </mbean>

This is how i am binding the path with the jndi name which has to be accessed by the application context's PropertyPlaceHolder tag.[code]

[ccustine]

I would absolutely LOVE to have this exact same thing. We use the PropertyPlaceholderConfigurer solely for the purpose of using different DB, JMS, etc. settings as we migrate application deployments from Dev->Test->Prod. We currently have a file location on each box with different files but we have needed to move to JNDI for a long time. This would be an excellent solution to this problem.

[Alef Arendsen]

Errrr, I didn't think long enough I guess ... Here's the solution:

<bean class="org.sprfr.PropertyPlaceholderConfigurer">
  <property name="properties">
    <bean class="org.sprfr.jndi.JndiObjectFactoryBean">
      <property name="jndiName"><value>JNDI-reference</value></property>
    </bean>
  </property>
</bean>

The JndiObjectFactoryBean pulls a jndi object from the JNDI tree (it's a Properties object so that's fine). JNDI-reference needs to be replaced by your JNDI location (something like java:comp/env/external/config I guess?). The 'properties' property of the PropertyPlaceholderConfigurer takes a Properties object instead of a Resource.

Let me know if you have any issues with this...

rgds,
Alef

[SSSS]

jboss-service.xml

<mbean code="org.jboss.naming.ExternalContext"
name="jboss.jndi:service=ExternalContext,jndiName= external/config">
<attribute name="JndiName">external/config</attribute>
<attribute name="Properties">
java.naming.factory.initial=com.sun.jndi.fscontext .FSContextFactory
java.naming.provider.url=file:///c:/config/
</attribute>
<attribute name="InitialContext">javax.naming.InitialContext</attribute>
</mbean>

applicationcontext.xml

<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.Pr opertyPlaceholderConfigurer">
<property name="properties">
<bean
class="org.springframework.jndi.JndiObjectFactoryB ean">
<property name="jndiName">
<value>external/config/deployment.properties</value>
</property>
</bean>
</property>


I get the following errors.
ceptionsException (1 errors); nested propertyAccessExceptions are: [org.springframework.beans.TypeMismatchException: Failed to convert property value of type [com.sun.jndi.fscontext.FSContext$FSFile] to required type [java.util.Properties] for property 'properties'])

I need your suggestion.Is there any other way to refer JNDI for loading property files?

[Alef Arendsen]

Arghhh, it's a file. I didn't realize this.

You should be able to next the JndiObjectFactoryBean in a FileSystemResource (this takes a File object):

<bean class="org.sprfr.PropertyPlaceholderConfigurer">
<property name="properties">
<bean class="org.sprfr.core.io.FileSystemResource">
<constructor-arg>
<bean class="org.sprfr.jndi.JndiObjectFactoryBean">
<property name="jndiName"><value>external/config/deployment.properties</value></property>
</bean>
</constructor-arg>
</bean>
</property>
</bean>

It's getting a bit bloated here. If I have time I'll think of a more elegant solution.

If it doesn't work, please don't hesitate to reply!

rgds,
Alef Arendsen

[c.petz@efkon.com]

Hi
I get the Class cast Exception using the sollution setting property "properties" but this one is working fine

<bean id="jndiPropertyConfigurer"
class="org.springframework.beans.factory.config.Pr opertyPlaceholderConfigurer">
<property name="locations">
<list>
<bean
class="org.springframework.core.io.FileSystemResou rce">
<constructor-arg>
<bean
class="org.springframework.jndi.JndiObjectFactoryB ean">
<property name="jndiName"
value="java:comp/env/propertyFileName" />
<property name="resourceRef" value="true" />
</bean>
</constructor-arg>
</bean>
</list>
</property>
<property name="ignoreUnresolvablePlaceholders" value="true" />
</bean>

[vjsjvm]

Alef and c.petz@efkon.com

Thanks a lot for the solutions. I have exactly the same requirement. It does not work for me yet (may be app server specific jndi issue) but you can ask Spring to create appropriate Class to do this simply as it looks to be a general requirement.

[vjsjvm]

Finally it worked just fine! Here's the sample spring bean config file :

<bean id="jndiPropertyConfigurer" class="org.springframework.beans.factory.config.Pr opertyPlaceholderConfigurer">
<property name="locations">
<list>
<bean class="org.springframework.core.io.FileSystemResou rce">
<constructor-arg>
<bean class="org.springframework.jndi.JndiObjectFactoryB ean">
<property name="jndiName" value="CONFIG_FILE_SPRING" />
<property name="resourceRef" value="false" />
</bean>
</constructor-arg>
</bean>
<bean class="org.springframework.core.io.FileSystemResou rce">
<constructor-arg>
<bean class="org.springframework.jndi.JndiObjectFactoryB ean">
<property name="jndiName" value="CONFIG_FILE_APP" />
<property name="resourceRef" value="false" />
</bean>
</constructor-arg>
</bean>
</list>
</property>
</bean>