Property Loader Valve
---------------------
Key: JS2-557
URL: http://issues.apache.org/jira/browse/JS2-557
Project: Jetspeed 2
Issue Type: New Feature
Components: Assembly/Configuration
Affects Versions: 2.1-dev
Reporter: David Sean Taylor
Assigned To: David Sean Taylor
Priority: Minor
Fix For: 2.1-dev
This is the property loader valve that we discussed yesterday. It
provides a convenient way to make information within a property file
available for the rendering of the decorators or portlets.
The concept is that this object is loaded via Spring. There are three
different constructors. In each case the key is used as the name of an
attribute on the request. The value associated with this key is an
instance of org.apache.commons.configuration.PropertiesConfiguration
Constructors
===============
1. Key name and property configuration object
The property configuration object would need to be constructed and
provided to the constructor. This is easily accomplished with Spring
2. Key name and full path to the properties file
The properties file is loaded into a property configuration object
3. Key name
The key name is used as both the key and the name of an environment
variable that should contain the full path to the property file.
The initialize method must be called at the time of creation so that the
property configuration object can be properly loaded. An example of a
Spring config is shown below:
<bean id="propertyLoaderValve"
class="com.fmr.portal.pipeline.impl.PropertyLoaderValve"
init-method="initialize">
<constructor-arg index="0">
<value>php.props</value>
</constructor-arg>
</bean>
The motivation for this valve was to externalize the configuration of a
properties file. This becomes important when an application is
installed in different locations that require differently property
values. Our operations group is able to modify the path of the
properties file within Websphere without having to edit any spring
configuration files.
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