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From "Alexis Midon (JIRA)" <j...@apache.org>
Subject [jira] Created: (ODE-619) placeholders in endpoint properties
Date Thu, 04 Jun 2009 17:23:07 GMT
placeholders in endpoint properties
-----------------------------------

                 Key: ODE-619
                 URL: https://issues.apache.org/jira/browse/ODE-619
             Project: ODE
          Issue Type: Improvement
          Components: Axis2 Integration
            Reporter: Alexis Midon
            Assignee: Alexis Midon
             Fix For: 1.3.3



Endpoint properties [1] now support placeholders. These placeholders can be use in other property
values to avoid repeating common values. 
The general placeholder pattern is ${placeholder.name}

Three types of placeholders shall be separated:
 #1  environment placeholders:  placeholders for environment variables. 
They follow the naming convention ala ANT:  ${env.JAVA_HOME} will retrieve the JAVA_HOME env
var.

 #2 system placeholders: placeholders for system properties
They follow the naming convention: ${system.log4j.configuration} will access the system property
"log4j.configuration"
System placeholders might point to environment placeholders.

 #3 local placeholders: placeholders defined in one endpoint property file
These do not use any prefixes: ${mytimeout} will be replaced by the value of "mytimeout" placeholder.
Local placeholder values might themselves used the 2 previous placeholders types (env var
and sys properties).
mytimeout=${env.TIMEOUT} is valid, and will be replaced by the env variable TIMEOUT.

Local placeholders can be defined in one file, and used in another. If defined twice, the
last loaded value will have precedence.

Here are a few examples:

placeholder1=placeholder1-value
test.placeholder1=${placeholder1}

ns-alias.my-service.ode.mysys.property=${system.TestSystemProperty}
ns-alias.my-service.ode.myen.property=${env.TEST_DUMMY_ENV_VAR}

See org.apache.ode.utils.HierarchicalPropertiesTest for more.

[1] http://ode.apache.org/user-guide.html#UserGuide-EndpointConfiguration

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